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skin-invert"> <img class="mw-logo-wordmark" alt="Уикипедия" src="/static/images/mobile/copyright/wikipedia-wordmark-bg.svg" style="width: 7.5em; height: 1.3125em;"> <img class="mw-logo-tagline" alt="Свободната енциклопедия" src="/static/images/mobile/copyright/wikipedia-tagline-bg.svg" width="120" height="12" style="width: 7.5em; height: 0.75em;"> </span> </a> </div> <div class="vector-header-end"> <div id="p-search" role="search" class="vector-search-box-vue vector-search-box-collapses vector-search-box-show-thumbnail vector-search-box-auto-expand-width vector-search-box"> <a href="/wiki/%D0%A1%D0%BF%D0%B5%D1%86%D0%B8%D0%B0%D0%BB%D0%BD%D0%B8:%D0%A2%D1%8A%D1%80%D1%81%D0%B5%D0%BD%D0%B5" class="cdx-button cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--weight-quiet cdx-button--icon-only search-toggle" title="Претърсване на Уикипедия [f]" accesskey="f"><span class="vector-icon mw-ui-icon-search mw-ui-icon-wikimedia-search"></span> <span>Търсене</span> </a> <div class="vector-typeahead-search-container"> <div class="cdx-typeahead-search cdx-typeahead-search--show-thumbnail cdx-typeahead-search--auto-expand-width"> <form action="/w/index.php" id="searchform" class="cdx-search-input cdx-search-input--has-end-button"> <div id="simpleSearch" class="cdx-search-input__input-wrapper" data-search-loc="header-moved"> <div class="cdx-text-input cdx-text-input--has-start-icon"> <input class="cdx-text-input__input" type="search" name="search" placeholder="Търсене в Уикипедия" aria-label="Търсене в Уикипедия" autocapitalize="sentences" title="Претърсване на Уикипедия [f]" accesskey="f" id="searchInput" > <span class="cdx-text-input__icon cdx-text-input__start-icon"></span> </div> <input type="hidden" name="title" value="Специални:Търсене"> </div> <button class="cdx-button cdx-search-input__end-button">Търсене</button> </form> </div> </div> </div> <nav class="vector-user-links vector-user-links-wide" aria-label="Лични инструменти"> <div class="vector-user-links-main"> <div id="p-vector-user-menu-preferences" class="vector-menu mw-portlet emptyPortlet" > <div class="vector-menu-content"> <ul class="vector-menu-content-list"> </ul> </div> </div> <div id="p-vector-user-menu-userpage" class="vector-menu mw-portlet emptyPortlet" > <div class="vector-menu-content"> <ul class="vector-menu-content-list"> </ul> </div> </div> <nav class="vector-appearance-landmark" aria-label="Облик"> <div id="vector-appearance-dropdown" class="vector-dropdown " title="Change the appearance of the page's font size, width, and color" > <input type="checkbox" id="vector-appearance-dropdown-checkbox" role="button" aria-haspopup="true" data-event-name="ui.dropdown-vector-appearance-dropdown" class="vector-dropdown-checkbox " aria-label="Облик" > <label id="vector-appearance-dropdown-label" for="vector-appearance-dropdown-checkbox" class="vector-dropdown-label cdx-button cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--weight-quiet cdx-button--icon-only " aria-hidden="true" ><span class="vector-icon mw-ui-icon-appearance mw-ui-icon-wikimedia-appearance"></span> <span class="vector-dropdown-label-text">Облик</span> </label> <div class="vector-dropdown-content"> <div id="vector-appearance-unpinned-container" class="vector-unpinned-container"> </div> </div> </div> </nav> <div id="p-vector-user-menu-notifications" class="vector-menu mw-portlet emptyPortlet" > <div class="vector-menu-content"> <ul class="vector-menu-content-list"> </ul> </div> </div> <div id="p-vector-user-menu-overflow" class="vector-menu mw-portlet" > <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li id="pt-sitesupport-2" class="user-links-collapsible-item mw-list-item user-links-collapsible-item"><a data-mw="interface" href="https://donate.wikimedia.org/?wmf_source=donate&wmf_medium=sidebar&wmf_campaign=bg.wikipedia.org&uselang=bg" class=""><span>Направете дарение</span></a> </li> <li id="pt-createaccount-2" class="user-links-collapsible-item mw-list-item user-links-collapsible-item"><a data-mw="interface" href="/w/index.php?title=%D0%A1%D0%BF%D0%B5%D1%86%D0%B8%D0%B0%D0%BB%D0%BD%D0%B8:%D0%A1%D1%8A%D0%B7%D0%B4%D0%B0%D0%B2%D0%B0%D0%BD%D0%B5_%D0%BD%D0%B0_%D1%81%D0%BC%D0%B5%D1%82%D0%BA%D0%B0&returnto=%D0%91%D0%B8%D0%BE%D1%82%D0%B8%D1%82" title="Насърчаваме Ви да си създадете сметка и да влезете, въпреки че не е задължително." class=""><span>Създаване на сметка</span></a> </li> <li id="pt-login-2" class="user-links-collapsible-item mw-list-item user-links-collapsible-item"><a data-mw="interface" href="/w/index.php?title=%D0%A1%D0%BF%D0%B5%D1%86%D0%B8%D0%B0%D0%BB%D0%BD%D0%B8:%D0%A0%D0%B5%D0%B3%D0%B8%D1%81%D1%82%D1%80%D0%B8%D1%80%D0%B0%D0%BD%D0%B5_%D0%B8%D0%BB%D0%B8_%D0%B2%D0%BB%D0%B8%D0%B7%D0%B0%D0%BD%D0%B5&returnto=%D0%91%D0%B8%D0%BE%D1%82%D0%B8%D1%82" title="Препоръчваме Ви да влезете, въпреки, че не е задължително. [o]" accesskey="o" class=""><span>Влизане</span></a> </li> </ul> </div> </div> </div> <div id="vector-user-links-dropdown" class="vector-dropdown vector-user-menu vector-button-flush-right vector-user-menu-logged-out" title="Допълнителни опции" > <input type="checkbox" id="vector-user-links-dropdown-checkbox" role="button" aria-haspopup="true" data-event-name="ui.dropdown-vector-user-links-dropdown" class="vector-dropdown-checkbox " aria-label="Лични инструменти" > <label id="vector-user-links-dropdown-label" for="vector-user-links-dropdown-checkbox" class="vector-dropdown-label cdx-button cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--weight-quiet cdx-button--icon-only " aria-hidden="true" ><span class="vector-icon mw-ui-icon-ellipsis mw-ui-icon-wikimedia-ellipsis"></span> <span class="vector-dropdown-label-text">Лични инструменти</span> </label> <div class="vector-dropdown-content"> <div id="p-personal" class="vector-menu mw-portlet mw-portlet-personal user-links-collapsible-item" title="Потребителско меню" > <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li id="pt-sitesupport" class="user-links-collapsible-item mw-list-item"><a href="https://donate.wikimedia.org/?wmf_source=donate&wmf_medium=sidebar&wmf_campaign=bg.wikipedia.org&uselang=bg"><span>Направете дарение</span></a></li><li id="pt-createaccount" class="user-links-collapsible-item mw-list-item"><a href="/w/index.php?title=%D0%A1%D0%BF%D0%B5%D1%86%D0%B8%D0%B0%D0%BB%D0%BD%D0%B8:%D0%A1%D1%8A%D0%B7%D0%B4%D0%B0%D0%B2%D0%B0%D0%BD%D0%B5_%D0%BD%D0%B0_%D1%81%D0%BC%D0%B5%D1%82%D0%BA%D0%B0&returnto=%D0%91%D0%B8%D0%BE%D1%82%D0%B8%D1%82" title="Насърчаваме Ви да си създадете сметка и да влезете, въпреки че не е задължително."><span class="vector-icon mw-ui-icon-userAdd mw-ui-icon-wikimedia-userAdd"></span> <span>Създаване на сметка</span></a></li><li id="pt-login" class="user-links-collapsible-item mw-list-item"><a href="/w/index.php?title=%D0%A1%D0%BF%D0%B5%D1%86%D0%B8%D0%B0%D0%BB%D0%BD%D0%B8:%D0%A0%D0%B5%D0%B3%D0%B8%D1%81%D1%82%D1%80%D0%B8%D1%80%D0%B0%D0%BD%D0%B5_%D0%B8%D0%BB%D0%B8_%D0%B2%D0%BB%D0%B8%D0%B7%D0%B0%D0%BD%D0%B5&returnto=%D0%91%D0%B8%D0%BE%D1%82%D0%B8%D1%82" title="Препоръчваме Ви да влезете, въпреки, че не е задължително. [o]" accesskey="o"><span class="vector-icon mw-ui-icon-logIn mw-ui-icon-wikimedia-logIn"></span> <span>Влизане</span></a></li> </ul> </div> </div> <div id="p-user-menu-anon-editor" class="vector-menu mw-portlet mw-portlet-user-menu-anon-editor" > <div class="vector-menu-heading"> Страници за излезли от системата редактори <a href="/wiki/%D0%9F%D0%BE%D0%BC%D0%BE%D1%89:%D0%92%D1%8A%D0%B2%D0%B5%D0%B4%D0%B5%D0%BD%D0%B8%D0%B5" aria-label="Научете повече за редактирането"><span>научете повече</span></a> </div> <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li id="pt-anoncontribs" class="mw-list-item"><a href="/wiki/%D0%A1%D0%BF%D0%B5%D1%86%D0%B8%D0%B0%D0%BB%D0%BD%D0%B8:%D0%9C%D0%BE%D0%B8%D1%82%D0%B5_%D0%BF%D1%80%D0%B8%D0%BD%D0%BE%D1%81%D0%B8" title="Списък на промените, направени от този IP адрес [y]" accesskey="y"><span>Приноси</span></a></li><li id="pt-anontalk" class="mw-list-item"><a href="/wiki/%D0%A1%D0%BF%D0%B5%D1%86%D0%B8%D0%B0%D0%BB%D0%BD%D0%B8:%D0%9C%D0%BE%D1%8F%D1%82%D0%B0_%D0%B1%D0%B5%D1%81%D0%B5%D0%B4%D0%B0" title="Дискусия относно редакциите от този адрес [n]" accesskey="n"><span>Беседа</span></a></li> </ul> </div> </div> </div> </div> </nav> </div> </header> </div> <div class="mw-page-container"> <div class="mw-page-container-inner"> <div class="vector-sitenotice-container"> <div id="siteNotice"></div> </div> <div class="vector-column-start"> <div class="vector-main-menu-container"> <div id="mw-navigation"> <nav id="mw-panel" class="vector-main-menu-landmark" aria-label="Сайт"> <div id="vector-main-menu-pinned-container" class="vector-pinned-container"> </div> </nav> </div> </div> <div class="vector-sticky-pinned-container"> <nav id="mw-panel-toc" aria-label="Съдържание" data-event-name="ui.sidebar-toc" class="mw-table-of-contents-container vector-toc-landmark"> <div id="vector-toc-pinned-container" class="vector-pinned-container"> <div id="vector-toc" class="vector-toc vector-pinnable-element"> <div class="vector-pinnable-header vector-toc-pinnable-header vector-pinnable-header-pinned" data-feature-name="toc-pinned" data-pinnable-element-id="vector-toc" > <h2 class="vector-pinnable-header-label">Съдържание</h2> <button class="vector-pinnable-header-toggle-button vector-pinnable-header-pin-button" data-event-name="pinnable-header.vector-toc.pin">преместване към страничната лента</button> <button class="vector-pinnable-header-toggle-button vector-pinnable-header-unpin-button" data-event-name="pinnable-header.vector-toc.unpin">скриване</button> </div> <ul class="vector-toc-contents" id="mw-panel-toc-list"> <li id="toc-mw-content-text" class="vector-toc-list-item vector-toc-level-1"> <a href="#" class="vector-toc-link"> <div class="vector-toc-text">Начало</div> </a> </li> <li id="toc-Морфология" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Морфология"> <div class="vector-toc-text"> <span class="vector-toc-numb">1</span> <span>Морфология</span> </div> </a> <ul id="toc-Морфология-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Структура" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Структура"> <div class="vector-toc-text"> <span class="vector-toc-numb">2</span> <span>Структура</span> </div> </a> <ul id="toc-Структура-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Разновидности" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Разновидности"> <div class="vector-toc-text"> <span class="vector-toc-numb">3</span> <span>Разновидности</span> </div> </a> <ul id="toc-Разновидности-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Химичен_състав_и_свойства" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Химичен_състав_и_свойства"> <div class="vector-toc-text"> <span class="vector-toc-numb">4</span> <span>Химичен състав и свойства</span> </div> </a> <ul id="toc-Химичен_състав_и_свойства-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Физични_свойства" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Физични_свойства"> <div class="vector-toc-text"> <span class="vector-toc-numb">5</span> <span>Физични свойства</span> </div> </a> <ul id="toc-Физични_свойства-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Оптични_свойства" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Оптични_свойства"> <div class="vector-toc-text"> <span class="vector-toc-numb">6</span> <span>Оптични свойства</span> </div> </a> <ul id="toc-Оптични_свойства-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Кристалографски_свойства" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Кристалографски_свойства"> <div class="vector-toc-text"> <span class="vector-toc-numb">7</span> <span>Кристалографски свойства</span> </div> </a> <ul id="toc-Кристалографски_свойства-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Други_характеристики" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Други_характеристики"> <div class="vector-toc-text"> <span class="vector-toc-numb">8</span> <span>Други характеристики</span> </div> </a> <ul id="toc-Други_характеристики-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Находища" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Находища"> <div class="vector-toc-text"> <span class="vector-toc-numb">9</span> <span>Находища</span> </div> </a> <ul id="toc-Находища-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Употреба" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Употреба"> <div class="vector-toc-text"> <span class="vector-toc-numb">10</span> <span>Употреба</span> </div> </a> <ul id="toc-Употреба-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Източници" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Източници"> <div class="vector-toc-text"> <span class="vector-toc-numb">11</span> <span>Източници</span> </div> </a> <ul id="toc-Източници-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Литература" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Литература"> <div class="vector-toc-text"> <span class="vector-toc-numb">12</span> <span>Литература</span> </div> </a> <ul id="toc-Литература-sublist" class="vector-toc-list"> </ul> </li> </ul> </div> </div> </nav> </div> </div> <div class="mw-content-container"> <main id="content" class="mw-body"> <header class="mw-body-header vector-page-titlebar"> <nav aria-label="Съдържание" class="vector-toc-landmark"> <div id="vector-page-titlebar-toc" class="vector-dropdown vector-page-titlebar-toc vector-button-flush-left" title="Съдържание" > <input type="checkbox" id="vector-page-titlebar-toc-checkbox" role="button" aria-haspopup="true" data-event-name="ui.dropdown-vector-page-titlebar-toc" class="vector-dropdown-checkbox " aria-label="Скриване/показване на съдържанието" > <label id="vector-page-titlebar-toc-label" for="vector-page-titlebar-toc-checkbox" class="vector-dropdown-label cdx-button cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--weight-quiet cdx-button--icon-only " aria-hidden="true" ><span class="vector-icon mw-ui-icon-listBullet mw-ui-icon-wikimedia-listBullet"></span> <span class="vector-dropdown-label-text">Скриване/показване на съдържанието</span> </label> <div class="vector-dropdown-content"> <div id="vector-page-titlebar-toc-unpinned-container" class="vector-unpinned-container"> </div> </div> </div> </nav> <h1 id="firstHeading" class="firstHeading mw-first-heading"><span class="mw-page-title-main">Биотит</span></h1> <div id="p-lang-btn" class="vector-dropdown mw-portlet mw-portlet-lang" > <input type="checkbox" id="p-lang-btn-checkbox" role="button" aria-haspopup="true" data-event-name="ui.dropdown-p-lang-btn" class="vector-dropdown-checkbox mw-interlanguage-selector" aria-label="Към статията на друг език. Налична на 48 езика" > <label id="p-lang-btn-label" for="p-lang-btn-checkbox" class="vector-dropdown-label cdx-button cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--weight-quiet cdx-button--action-progressive mw-portlet-lang-heading-48" aria-hidden="true" ><span class="vector-icon mw-ui-icon-language-progressive mw-ui-icon-wikimedia-language-progressive"></span> <span class="vector-dropdown-label-text">48 езика</span> </label> <div class="vector-dropdown-content"> <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li class="interlanguage-link interwiki-af mw-list-item"><a href="https://af.wikipedia.org/wiki/Biotiet" title="Biotiet – африканс" lang="af" hreflang="af" data-title="Biotiet" data-language-autonym="Afrikaans" data-language-local-name="африканс" class="interlanguage-link-target"><span>Afrikaans</span></a></li><li class="interlanguage-link interwiki-ar mw-list-item"><a href="https://ar.wikipedia.org/wiki/%D8%A8%D9%8A%D9%88%D8%AA%D9%8A%D8%AA" title="بيوتيت – арабски" lang="ar" hreflang="ar" data-title="بيوتيت" data-language-autonym="العربية" data-language-local-name="арабски" class="interlanguage-link-target"><span>العربية</span></a></li><li class="interlanguage-link interwiki-az mw-list-item"><a href="https://az.wikipedia.org/wiki/Biotit" title="Biotit – азербайджански" lang="az" hreflang="az" data-title="Biotit" data-language-autonym="Azərbaycanca" data-language-local-name="азербайджански" class="interlanguage-link-target"><span>Azərbaycanca</span></a></li><li class="interlanguage-link interwiki-be mw-list-item"><a href="https://be.wikipedia.org/wiki/%D0%91%D1%96%D1%8F%D1%82%D1%8B%D1%82" title="Біятыт – беларуски" lang="be" hreflang="be" data-title="Біятыт" data-language-autonym="Беларуская" data-language-local-name="беларуски" class="interlanguage-link-target"><span>Беларуская</span></a></li><li class="interlanguage-link interwiki-ca mw-list-item"><a href="https://ca.wikipedia.org/wiki/Biotita" title="Biotita – каталонски" lang="ca" hreflang="ca" data-title="Biotita" data-language-autonym="Català" data-language-local-name="каталонски" class="interlanguage-link-target"><span>Català</span></a></li><li class="interlanguage-link interwiki-cs mw-list-item"><a href="https://cs.wikipedia.org/wiki/Biotit" title="Biotit – чешки" lang="cs" hreflang="cs" data-title="Biotit" data-language-autonym="Čeština" data-language-local-name="чешки" class="interlanguage-link-target"><span>Čeština</span></a></li><li class="interlanguage-link interwiki-de mw-list-item"><a href="https://de.wikipedia.org/wiki/Biotit" title="Biotit – немски" lang="de" hreflang="de" data-title="Biotit" data-language-autonym="Deutsch" data-language-local-name="немски" class="interlanguage-link-target"><span>Deutsch</span></a></li><li class="interlanguage-link interwiki-el mw-list-item"><a href="https://el.wikipedia.org/wiki/%CE%92%CE%B9%CE%BF%CF%84%CE%AF%CF%84%CE%B7%CF%82" title="Βιοτίτης – гръцки" lang="el" hreflang="el" data-title="Βιοτίτης" data-language-autonym="Ελληνικά" data-language-local-name="гръцки" class="interlanguage-link-target"><span>Ελληνικά</span></a></li><li class="interlanguage-link interwiki-en mw-list-item"><a href="https://en.wikipedia.org/wiki/Biotite" title="Biotite – английски" lang="en" hreflang="en" data-title="Biotite" data-language-autonym="English" data-language-local-name="английски" class="interlanguage-link-target"><span>English</span></a></li><li class="interlanguage-link interwiki-es mw-list-item"><a href="https://es.wikipedia.org/wiki/Biotita" title="Biotita – испански" lang="es" hreflang="es" data-title="Biotita" data-language-autonym="Español" data-language-local-name="испански" class="interlanguage-link-target"><span>Español</span></a></li><li class="interlanguage-link interwiki-et mw-list-item"><a href="https://et.wikipedia.org/wiki/Biotiit" title="Biotiit – естонски" lang="et" hreflang="et" data-title="Biotiit" data-language-autonym="Eesti" data-language-local-name="естонски" class="interlanguage-link-target"><span>Eesti</span></a></li><li class="interlanguage-link interwiki-fa mw-list-item"><a href="https://fa.wikipedia.org/wiki/%D8%A8%DB%8C%D9%88%D8%AA%DB%8C%D8%AA" title="بیوتیت – персийски" lang="fa" hreflang="fa" data-title="بیوتیت" data-language-autonym="فارسی" data-language-local-name="персийски" class="interlanguage-link-target"><span>فارسی</span></a></li><li class="interlanguage-link interwiki-fi mw-list-item"><a href="https://fi.wikipedia.org/wiki/Biotiitti" title="Biotiitti – фински" lang="fi" hreflang="fi" data-title="Biotiitti" data-language-autonym="Suomi" data-language-local-name="фински" class="interlanguage-link-target"><span>Suomi</span></a></li><li class="interlanguage-link interwiki-fr mw-list-item"><a href="https://fr.wikipedia.org/wiki/Biotite" title="Biotite – френски" lang="fr" hreflang="fr" data-title="Biotite" data-language-autonym="Français" data-language-local-name="френски" class="interlanguage-link-target"><span>Français</span></a></li><li class="interlanguage-link interwiki-gl mw-list-item"><a href="https://gl.wikipedia.org/wiki/Biotita" title="Biotita – галисийски" lang="gl" hreflang="gl" data-title="Biotita" data-language-autonym="Galego" data-language-local-name="галисийски" class="interlanguage-link-target"><span>Galego</span></a></li><li class="interlanguage-link interwiki-he mw-list-item"><a href="https://he.wikipedia.org/wiki/%D7%91%D7%99%D7%95%D7%98%D7%99%D7%98" title="ביוטיט – иврит" lang="he" hreflang="he" data-title="ביוטיט" data-language-autonym="עברית" data-language-local-name="иврит" class="interlanguage-link-target"><span>עברית</span></a></li><li class="interlanguage-link interwiki-hu mw-list-item"><a href="https://hu.wikipedia.org/wiki/Biotit" title="Biotit – унгарски" lang="hu" hreflang="hu" data-title="Biotit" data-language-autonym="Magyar" data-language-local-name="унгарски" class="interlanguage-link-target"><span>Magyar</span></a></li><li class="interlanguage-link interwiki-hy mw-list-item"><a href="https://hy.wikipedia.org/wiki/%D4%B2%D5%AB%D5%B8%D5%BF%D5%AB%D5%BF" title="Բիոտիտ – арменски" lang="hy" hreflang="hy" data-title="Բիոտիտ" data-language-autonym="Հայերեն" data-language-local-name="арменски" class="interlanguage-link-target"><span>Հայերեն</span></a></li><li class="interlanguage-link interwiki-id mw-list-item"><a href="https://id.wikipedia.org/wiki/Biotit" title="Biotit – индонезийски" lang="id" hreflang="id" data-title="Biotit" data-language-autonym="Bahasa Indonesia" data-language-local-name="индонезийски" class="interlanguage-link-target"><span>Bahasa Indonesia</span></a></li><li class="interlanguage-link interwiki-it mw-list-item"><a href="https://it.wikipedia.org/wiki/Biotite" title="Biotite – италиански" lang="it" hreflang="it" data-title="Biotite" data-language-autonym="Italiano" data-language-local-name="италиански" class="interlanguage-link-target"><span>Italiano</span></a></li><li class="interlanguage-link interwiki-ja mw-list-item"><a href="https://ja.wikipedia.org/wiki/%E9%BB%92%E9%9B%B2%E6%AF%8D" title="黒雲母 – японски" lang="ja" hreflang="ja" data-title="黒雲母" data-language-autonym="日本語" data-language-local-name="японски" class="interlanguage-link-target"><span>日本語</span></a></li><li class="interlanguage-link interwiki-ka mw-list-item"><a href="https://ka.wikipedia.org/wiki/%E1%83%91%E1%83%98%E1%83%9D%E1%83%A2%E1%83%98%E1%83%A2%E1%83%98" title="ბიოტიტი – грузински" lang="ka" hreflang="ka" data-title="ბიოტიტი" data-language-autonym="ქართული" data-language-local-name="грузински" class="interlanguage-link-target"><span>ქართული</span></a></li><li class="interlanguage-link interwiki-kk mw-list-item"><a href="https://kk.wikipedia.org/wiki/%D0%91%D0%B8%D0%BE%D1%82%D0%B8%D1%82" title="Биотит – казахски" lang="kk" hreflang="kk" data-title="Биотит" data-language-autonym="Қазақша" data-language-local-name="казахски" class="interlanguage-link-target"><span>Қазақша</span></a></li><li class="interlanguage-link interwiki-ko mw-list-item"><a href="https://ko.wikipedia.org/wiki/%ED%9D%91%EC%9A%B4%EB%AA%A8" title="흑운모 – корейски" lang="ko" hreflang="ko" data-title="흑운모" data-language-autonym="한국어" data-language-local-name="корейски" class="interlanguage-link-target"><span>한국어</span></a></li><li class="interlanguage-link interwiki-ky mw-list-item"><a href="https://ky.wikipedia.org/wiki/%D0%91%D0%B8%D0%BE%D1%82%D0%B8%D1%82" title="Биотит – киргизки" lang="ky" hreflang="ky" data-title="Биотит" data-language-autonym="Кыргызча" data-language-local-name="киргизки" class="interlanguage-link-target"><span>Кыргызча</span></a></li><li class="interlanguage-link interwiki-lt mw-list-item"><a href="https://lt.wikipedia.org/wiki/Biotitas" title="Biotitas – литовски" lang="lt" hreflang="lt" data-title="Biotitas" data-language-autonym="Lietuvių" data-language-local-name="литовски" class="interlanguage-link-target"><span>Lietuvių</span></a></li><li class="interlanguage-link interwiki-nds mw-list-item"><a href="https://nds.wikipedia.org/wiki/Biotit" title="Biotit – долнонемски" lang="nds" hreflang="nds" data-title="Biotit" data-language-autonym="Plattdüütsch" data-language-local-name="долнонемски" class="interlanguage-link-target"><span>Plattdüütsch</span></a></li><li class="interlanguage-link interwiki-nl mw-list-item"><a href="https://nl.wikipedia.org/wiki/Biotiet" title="Biotiet – нидерландски" lang="nl" hreflang="nl" data-title="Biotiet" data-language-autonym="Nederlands" data-language-local-name="нидерландски" class="interlanguage-link-target"><span>Nederlands</span></a></li><li class="interlanguage-link interwiki-nn mw-list-item"><a href="https://nn.wikipedia.org/wiki/Biotitt" title="Biotitt – норвежки (нюношк)" lang="nn" hreflang="nn" data-title="Biotitt" data-language-autonym="Norsk nynorsk" data-language-local-name="норвежки (нюношк)" class="interlanguage-link-target"><span>Norsk nynorsk</span></a></li><li class="interlanguage-link interwiki-no mw-list-item"><a href="https://no.wikipedia.org/wiki/Biotitt" title="Biotitt – норвежки (букмол)" lang="nb" hreflang="nb" data-title="Biotitt" data-language-autonym="Norsk bokmål" data-language-local-name="норвежки (букмол)" class="interlanguage-link-target"><span>Norsk bokmål</span></a></li><li class="interlanguage-link interwiki-pl mw-list-item"><a href="https://pl.wikipedia.org/wiki/Biotyt" title="Biotyt – полски" lang="pl" hreflang="pl" data-title="Biotyt" data-language-autonym="Polski" data-language-local-name="полски" class="interlanguage-link-target"><span>Polski</span></a></li><li class="interlanguage-link interwiki-pt mw-list-item"><a href="https://pt.wikipedia.org/wiki/Biotita" title="Biotita – португалски" lang="pt" hreflang="pt" data-title="Biotita" data-language-autonym="Português" data-language-local-name="португалски" class="interlanguage-link-target"><span>Português</span></a></li><li class="interlanguage-link interwiki-ro mw-list-item"><a href="https://ro.wikipedia.org/wiki/Biotit" title="Biotit – румънски" lang="ro" hreflang="ro" data-title="Biotit" data-language-autonym="Română" data-language-local-name="румънски" class="interlanguage-link-target"><span>Română</span></a></li><li class="interlanguage-link interwiki-ru mw-list-item"><a href="https://ru.wikipedia.org/wiki/%D0%91%D0%B8%D0%BE%D1%82%D0%B8%D1%82" title="Биотит – руски" lang="ru" hreflang="ru" data-title="Биотит" data-language-autonym="Русский" data-language-local-name="руски" class="interlanguage-link-target"><span>Русский</span></a></li><li class="interlanguage-link interwiki-sco mw-list-item"><a href="https://sco.wikipedia.org/wiki/Biotite" title="Biotite – шотландски" lang="sco" hreflang="sco" data-title="Biotite" data-language-autonym="Scots" data-language-local-name="шотландски" class="interlanguage-link-target"><span>Scots</span></a></li><li class="interlanguage-link interwiki-sh mw-list-item"><a href="https://sh.wikipedia.org/wiki/Biotit" title="Biotit – сърбохърватски" lang="sh" hreflang="sh" data-title="Biotit" data-language-autonym="Srpskohrvatski / српскохрватски" data-language-local-name="сърбохърватски" class="interlanguage-link-target"><span>Srpskohrvatski / српскохрватски</span></a></li><li class="interlanguage-link interwiki-si mw-list-item"><a href="https://si.wikipedia.org/wiki/%E0%B6%AD%E0%B6%BD%E0%B7%8F%E0%B6%AD%E0%B7%94_%E0%B6%B8%E0%B7%92%E0%B6%B1%E0%B7%92%E0%B6%BB%E0%B6%82" title="තලාතු මිනිරං – синхалски" lang="si" hreflang="si" data-title="තලාතු මිනිරං" data-language-autonym="සිංහල" data-language-local-name="синхалски" class="interlanguage-link-target"><span>සිංහල</span></a></li><li class="interlanguage-link interwiki-sk mw-list-item"><a href="https://sk.wikipedia.org/wiki/Biotit" title="Biotit – словашки" lang="sk" hreflang="sk" data-title="Biotit" data-language-autonym="Slovenčina" data-language-local-name="словашки" class="interlanguage-link-target"><span>Slovenčina</span></a></li><li class="interlanguage-link interwiki-sl mw-list-item"><a href="https://sl.wikipedia.org/wiki/Biotit" title="Biotit – словенски" lang="sl" hreflang="sl" data-title="Biotit" data-language-autonym="Slovenščina" data-language-local-name="словенски" class="interlanguage-link-target"><span>Slovenščina</span></a></li><li class="interlanguage-link interwiki-sr mw-list-item"><a href="https://sr.wikipedia.org/wiki/%D0%91%D0%B8%D0%BE%D1%82%D0%B8%D1%82" title="Биотит – сръбски" lang="sr" hreflang="sr" data-title="Биотит" data-language-autonym="Српски / srpski" data-language-local-name="сръбски" class="interlanguage-link-target"><span>Српски / srpski</span></a></li><li class="interlanguage-link interwiki-sv mw-list-item"><a href="https://sv.wikipedia.org/wiki/Biotit" title="Biotit – шведски" lang="sv" hreflang="sv" data-title="Biotit" data-language-autonym="Svenska" data-language-local-name="шведски" class="interlanguage-link-target"><span>Svenska</span></a></li><li class="interlanguage-link interwiki-tg mw-list-item"><a href="https://tg.wikipedia.org/wiki/%D0%91%D0%B8%D0%BE%D1%82%D0%B8%D1%82" title="Биотит – таджикски" lang="tg" hreflang="tg" data-title="Биотит" data-language-autonym="Тоҷикӣ" data-language-local-name="таджикски" class="interlanguage-link-target"><span>Тоҷикӣ</span></a></li><li class="interlanguage-link interwiki-th mw-list-item"><a href="https://th.wikipedia.org/wiki/%E0%B8%95%E0%B8%B8%E0%B9%8A%E0%B8%81%E0%B8%95%E0%B9%88%E0%B8%B3" title="ตุ๊กต่ำ – тайски" lang="th" hreflang="th" data-title="ตุ๊กต่ำ" data-language-autonym="ไทย" data-language-local-name="тайски" class="interlanguage-link-target"><span>ไทย</span></a></li><li class="interlanguage-link interwiki-tr mw-list-item"><a href="https://tr.wikipedia.org/wiki/Biyotit" title="Biyotit – турски" lang="tr" hreflang="tr" data-title="Biyotit" data-language-autonym="Türkçe" data-language-local-name="турски" class="interlanguage-link-target"><span>Türkçe</span></a></li><li class="interlanguage-link interwiki-uk mw-list-item"><a href="https://uk.wikipedia.org/wiki/%D0%91%D1%96%D0%BE%D1%82%D0%B8%D1%82" title="Біотит – украински" lang="uk" hreflang="uk" data-title="Біотит" data-language-autonym="Українська" data-language-local-name="украински" class="interlanguage-link-target"><span>Українська</span></a></li><li class="interlanguage-link interwiki-uz mw-list-item"><a href="https://uz.wikipedia.org/wiki/Biotit" title="Biotit – узбекски" lang="uz" hreflang="uz" data-title="Biotit" data-language-autonym="Oʻzbekcha / ўзбекча" data-language-local-name="узбекски" class="interlanguage-link-target"><span>Oʻzbekcha / ўзбекча</span></a></li><li class="interlanguage-link interwiki-vi mw-list-item"><a href="https://vi.wikipedia.org/wiki/Biotit" title="Biotit – виетнамски" lang="vi" hreflang="vi" data-title="Biotit" data-language-autonym="Tiếng Việt" data-language-local-name="виетнамски" class="interlanguage-link-target"><span>Tiếng Việt</span></a></li><li class="interlanguage-link interwiki-zh mw-list-item"><a href="https://zh.wikipedia.org/wiki/%E9%BB%91%E4%BA%91%E6%AF%8D" title="黑云母 – китайски" lang="zh" hreflang="zh" data-title="黑云母" data-language-autonym="中文" data-language-local-name="китайски" class="interlanguage-link-target"><span>中文</span></a></li> </ul> <div class="after-portlet after-portlet-lang"><span class="wb-langlinks-edit wb-langlinks-link"><a href="https://www.wikidata.org/wiki/Special:EntityPage/Q105794#sitelinks-wikipedia" title="Редактиране на междуезиковите препратки" class="wbc-editpage">Редактиране</a></span></div> </div> </div> </div> </header> <div class="vector-page-toolbar"> <div class="vector-page-toolbar-container"> <div id="left-navigation"> <nav aria-label="Именни пространства"> <div id="p-associated-pages" class="vector-menu vector-menu-tabs mw-portlet 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class="vector-dropdown-checkbox " aria-label="Инструменти" > <label id="vector-page-tools-dropdown-label" for="vector-page-tools-dropdown-checkbox" class="vector-dropdown-label cdx-button cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--weight-quiet" aria-hidden="true" ><span class="vector-dropdown-label-text">Инструменти</span> </label> <div class="vector-dropdown-content"> <div id="vector-page-tools-unpinned-container" class="vector-unpinned-container"> <div id="vector-page-tools" class="vector-page-tools vector-pinnable-element"> <div class="vector-pinnable-header vector-page-tools-pinnable-header vector-pinnable-header-unpinned" data-feature-name="page-tools-pinned" data-pinnable-element-id="vector-page-tools" data-pinned-container-id="vector-page-tools-pinned-container" data-unpinned-container-id="vector-page-tools-unpinned-container" > <div class="vector-pinnable-header-label">Инструменти</div> <button class="vector-pinnable-header-toggle-button vector-pinnable-header-pin-button" data-event-name="pinnable-header.vector-page-tools.pin">преместване към страничната лента</button> <button class="vector-pinnable-header-toggle-button vector-pinnable-header-unpin-button" data-event-name="pinnable-header.vector-page-tools.unpin">скриване</button> </div> <div id="p-cactions" class="vector-menu mw-portlet mw-portlet-cactions emptyPortlet vector-has-collapsible-items" title="Допълнителни опции" > <div class="vector-menu-heading"> Действия </div> <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li id="ca-more-view" class="selected vector-more-collapsible-item mw-list-item"><a href="/wiki/%D0%91%D0%B8%D0%BE%D1%82%D0%B8%D1%82"><span>Преглед</span></a></li><li id="ca-more-ve-edit" class="vector-more-collapsible-item mw-list-item"><a href="/w/index.php?title=%D0%91%D0%B8%D0%BE%D1%82%D0%B8%D1%82&veaction=edit" title="Редактиране на страницата [v]" accesskey="v"><span>Редактиране</span></a></li><li id="ca-more-edit" class="collapsible vector-more-collapsible-item mw-list-item"><a href="/w/index.php?title=%D0%91%D0%B8%D0%BE%D1%82%D0%B8%D1%82&action=edit" title="Редактиране на изходния код на страницата [e]" accesskey="e"><span>Редактиране на кода</span></a></li><li id="ca-more-history" class="vector-more-collapsible-item mw-list-item"><a href="/w/index.php?title=%D0%91%D0%B8%D0%BE%D1%82%D0%B8%D1%82&action=history"><span>История</span></a></li> </ul> </div> </div> <div id="p-tb" class="vector-menu mw-portlet mw-portlet-tb" > <div class="vector-menu-heading"> Основни </div> <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li id="t-whatlinkshere" class="mw-list-item"><a href="/wiki/%D0%A1%D0%BF%D0%B5%D1%86%D0%B8%D0%B0%D0%BB%D0%BD%D0%B8:%D0%9A%D0%B0%D0%BA%D0%B2%D0%BE_%D1%81%D0%BE%D1%87%D0%B8_%D0%BD%D0%B0%D1%81%D0%B0%D0%BC/%D0%91%D0%B8%D0%BE%D1%82%D0%B8%D1%82" title="Списък на всички страници, сочещи насам [j]" accesskey="j"><span>Какво сочи насам</span></a></li><li id="t-recentchangeslinked" class="mw-list-item"><a href="/wiki/%D0%A1%D0%BF%D0%B5%D1%86%D0%B8%D0%B0%D0%BB%D0%BD%D0%B8:%D0%A1%D0%B2%D1%8A%D1%80%D0%B7%D0%B0%D0%BD%D0%B8_%D0%BF%D1%80%D0%BE%D0%BC%D0%B5%D0%BD%D0%B8/%D0%91%D0%B8%D0%BE%D1%82%D0%B8%D1%82" rel="nofollow" title="Последните промени на страници, сочени от тази страница [k]" accesskey="k"><span>Свързани промени</span></a></li><li id="t-upload" class="mw-list-item"><a href="//bg.wikipedia.org/wiki/MediaWiki:Uploadtext" title="Качи файлове [u]" accesskey="u"><span>Качване на файл</span></a></li><li id="t-permalink" class="mw-list-item"><a href="/w/index.php?title=%D0%91%D0%B8%D0%BE%D1%82%D0%B8%D1%82&oldid=12220744" title="Постоянна препратка към тази версия на страницата"><span>Постоянна препратка</span></a></li><li id="t-info" class="mw-list-item"><a href="/w/index.php?title=%D0%91%D0%B8%D0%BE%D1%82%D0%B8%D1%82&action=info" title="Повече за тази страница"><span>Информация за страницата</span></a></li><li id="t-cite" class="mw-list-item"><a href="/w/index.php?title=%D0%A1%D0%BF%D0%B5%D1%86%D0%B8%D0%B0%D0%BB%D0%BD%D0%B8:%D0%A6%D0%B8%D1%82%D0%B8%D1%80%D0%B0%D0%BD%D0%B5&page=%D0%91%D0%B8%D0%BE%D1%82%D0%B8%D1%82&id=12220744&wpFormIdentifier=titleform" title="Информация за начините за цитиране на тази страница"><span>Цитиране на статията</span></a></li><li id="t-urlshortener" class="mw-list-item"><a href="/w/index.php?title=%D0%A1%D0%BF%D0%B5%D1%86%D0%B8%D0%B0%D0%BB%D0%BD%D0%B8:UrlShortener&url=https%3A%2F%2Fbg.wikipedia.org%2Fwiki%2F%25D0%2591%25D0%25B8%25D0%25BE%25D1%2582%25D0%25B8%25D1%2582"><span>Кратък URL адрес</span></a></li><li id="t-urlshortener-qrcode" class="mw-list-item"><a href="/w/index.php?title=%D0%A1%D0%BF%D0%B5%D1%86%D0%B8%D0%B0%D0%BB%D0%BD%D0%B8:QrCode&url=https%3A%2F%2Fbg.wikipedia.org%2Fwiki%2F%25D0%2591%25D0%25B8%25D0%25BE%25D1%2582%25D0%25B8%25D1%2582"><span>Изтегляне на QR код</span></a></li> </ul> </div> </div> <div id="p-coll-print_export" class="vector-menu mw-portlet mw-portlet-coll-print_export" > <div class="vector-menu-heading"> Отпечатване/изнасяне </div> <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li id="coll-create_a_book" class="mw-list-item"><a href="/w/index.php?title=%D0%A1%D0%BF%D0%B5%D1%86%D0%B8%D0%B0%D0%BB%D0%BD%D0%B8:Book&bookcmd=book_creator&referer=%D0%91%D0%B8%D0%BE%D1%82%D0%B8%D1%82"><span>Създаване на книга</span></a></li><li id="coll-download-as-rl" class="mw-list-item"><a href="/w/index.php?title=%D0%A1%D0%BF%D0%B5%D1%86%D0%B8%D0%B0%D0%BB%D0%BD%D0%B8:DownloadAsPdf&page=%D0%91%D0%B8%D0%BE%D1%82%D0%B8%D1%82&action=show-download-screen"><span>Изтегляне като PDF</span></a></li><li id="t-print" class="mw-list-item"><a href="/w/index.php?title=%D0%91%D0%B8%D0%BE%D1%82%D0%B8%D1%82&printable=yes" title="Версия за печат на страницата [p]" accesskey="p"><span>Версия за печат</span></a></li> </ul> </div> </div> <div id="p-wikibase-otherprojects" class="vector-menu mw-portlet mw-portlet-wikibase-otherprojects" > <div class="vector-menu-heading"> В други проекти </div> <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li class="wb-otherproject-link wb-otherproject-commons mw-list-item"><a href="https://commons.wikimedia.org/wiki/Category:Biotite" hreflang="en"><span>Общомедия</span></a></li><li id="t-wikibase" class="wb-otherproject-link wb-otherproject-wikibase-dataitem mw-list-item"><a href="https://www.wikidata.org/wiki/Special:EntityPage/Q105794" title="Препратка към свързания обект от хранилището за данни [g]" accesskey="g"><span>Обект в Уикиданни</span></a></li> </ul> </div> </div> </div> </div> </div> </div> </nav> </div> </div> </div> <div class="vector-column-end"> <div class="vector-sticky-pinned-container"> <nav class="vector-page-tools-landmark" aria-label="Page tools"> <div id="vector-page-tools-pinned-container" class="vector-pinned-container"> </div> </nav> <nav class="vector-appearance-landmark" aria-label="Облик"> <div id="vector-appearance-pinned-container" class="vector-pinned-container"> <div id="vector-appearance" class="vector-appearance vector-pinnable-element"> <div class="vector-pinnable-header vector-appearance-pinnable-header vector-pinnable-header-pinned" data-feature-name="appearance-pinned" data-pinnable-element-id="vector-appearance" data-pinned-container-id="vector-appearance-pinned-container" data-unpinned-container-id="vector-appearance-unpinned-container" > <div class="vector-pinnable-header-label">Облик</div> <button class="vector-pinnable-header-toggle-button vector-pinnable-header-pin-button" data-event-name="pinnable-header.vector-appearance.pin">преместване към страничната лента</button> <button class="vector-pinnable-header-toggle-button vector-pinnable-header-unpin-button" data-event-name="pinnable-header.vector-appearance.unpin">скриване</button> </div> </div> </div> </nav> </div> </div> <div id="bodyContent" class="vector-body" aria-labelledby="firstHeading" data-mw-ve-target-container> <div class="vector-body-before-content"> <div class="mw-indicators"> </div> <div id="siteSub" class="noprint">от Уикипедия, свободната енциклопедия</div> </div> <div id="contentSub"><div id="mw-content-subtitle"></div></div> <div id="mw-content-text" class="mw-body-content"><div class="mw-content-ltr mw-parser-output" lang="bg" dir="ltr"><style data-mw-deduplicate="TemplateStyles:r12144718">.mw-parser-output .infobox-lua{width:22em}.mw-parser-output .infobox-title,.mw-parser-output .infobox-above,.mw-parser-output .infobox-subheader,.mw-parser-output .infobox-image,.mw-parser-output .infobox-header,.mw-parser-output .infobox-data-only,.mw-parser-output .infobox-below{text-align:center}.mw-parser-output .infobox-above{font-size:125%;font-weight:bold}.mw-parser-output .infobox-label,.mw-parser-output .infobox-data{text-align:left}.mw-parser-output .infobox-navbar{text-align:right}.mw-parser-output .infobox .navbar{font-size:100%}.mw-parser-output .infobox-italic-title{display:none}.mw-parser-output .infobox-subbox{padding:0;margin:-5px 0;border:0;border-spacing:0 5px;width:auto;min-width:100%;font-size:100%;clear:none;float:none;background-color:transparent}body.skin-minerva .mw-parser-output .infobox th.onlysubbox,body.skin-minerva .mw-parser-output .infobox td.onlysubbox{padding:0!important}</style><table class="infobox infobox-lua infobox_v2 vcard"><tbody><tr><td colspan="2" class="infobox-above title physic" style="color:; background-color: #8BAFDA; border:1px solid #aaaaaa;">Биотит</td></tr><tr><td colspan="2" class="infobox-image"><span typeof="mw:File"><a href="/wiki/%D0%A4%D0%B0%D0%B9%D0%BB:Biotite_aggregate_-_Ochtendung,_Eifel,_Germany.jpg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/c/c8/Biotite_aggregate_-_Ochtendung%2C_Eifel%2C_Germany.jpg/240px-Biotite_aggregate_-_Ochtendung%2C_Eifel%2C_Germany.jpg" decoding="async" width="240" height="180" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/c/c8/Biotite_aggregate_-_Ochtendung%2C_Eifel%2C_Germany.jpg/360px-Biotite_aggregate_-_Ochtendung%2C_Eifel%2C_Germany.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/c/c8/Biotite_aggregate_-_Ochtendung%2C_Eifel%2C_Germany.jpg/480px-Biotite_aggregate_-_Ochtendung%2C_Eifel%2C_Germany.jpg 2x" data-file-width="921" data-file-height="691" /></a></span></td></tr><tr><th colspan="2" scope="colgroup" class="infobox-header" style="color:; background-color: #8BAFDA; border:1px solid #aaaaaa;">Характеристики</th></tr><tr><th scope="row" class="infobox-label"><a href="/wiki/%D0%A1%D0%BA%D0%B0%D0%BB%D0%B0_%D0%BD%D0%B0_%D0%9C%D0%BE%D0%BE%D1%81" title="Скала на Моос">Твърдост по Моос</a></th><td class="infobox-data">2,5</td></tr><tr><th scope="row" class="infobox-label"><a href="/wiki/%D0%A6%D0%B2%D1%8F%D1%82_%D0%BD%D0%B0_%D1%87%D0%B5%D1%80%D1%82%D0%B0%D1%82%D0%B0_(%D0%BC%D0%B8%D0%BD%D0%B5%D1%80%D0%B0%D0%BB%D0%BE%D0%B3%D0%B8%D1%8F)" title="Цвят на чертата (минералогия)">Цвят на чертата</a></th><td class="infobox-data">бяло</td></tr><tr><td colspan="2" class="infobox-below" style="color:; background-color: #8BAFDA; border:1px solid #aaaaaa;"><b class="plainlinks"><a class="external text" href="https://commons.wikimedia.org/wiki/Category:Biotite?uselang=bg">Биотит</a></b> в <a href="/wiki/%D0%9E%D0%B1%D1%89%D0%BE%D0%BC%D0%B5%D0%B4%D0%B8%D1%8F" title="Общомедия">Общомедия</a></td></tr></tbody></table> <figure typeof="mw:File/Thumb"><a href="/wiki/%D0%A4%D0%B0%D0%B9%D0%BB:Biotite_sliceUSGOV.jpg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/e/e9/Biotite_sliceUSGOV.jpg/300px-Biotite_sliceUSGOV.jpg" decoding="async" width="300" height="220" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/e/e9/Biotite_sliceUSGOV.jpg 1.5x" data-file-width="360" data-file-height="264" /></a><figcaption>Плочка черен биотит</figcaption></figure> <figure typeof="mw:File/Thumb"><a href="/wiki/%D0%A4%D0%B0%D0%B9%D0%BB:Biotite-201328.jpg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/e/ec/Biotite-201328.jpg/300px-Biotite-201328.jpg" decoding="async" width="300" height="206" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/e/ec/Biotite-201328.jpg/450px-Biotite-201328.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/e/ec/Biotite-201328.jpg 2x" data-file-width="500" data-file-height="343" /></a><figcaption>Биотит от региона <a href="/wiki/%D0%95%D1%80%D0%BE%D0%BD%D0%B3%D0%BE" title="Еронго">Еронго</a>, <a href="/wiki/%D0%9D%D0%B0%D0%BC%D0%B8%D0%B1%D0%B8%D1%8F" title="Намибия">Намибия</a></figcaption></figure> <p><b>Биотитът</b> е широко разпространена <a href="/wiki/%D0%9C%D0%B0%D0%B3%D0%BD%D0%B5%D0%B7%D0%B8%D0%B9" title="Магнезий">магнезиево</a>-<a href="/wiki/%D0%96%D0%B5%D0%BB%D1%8F%D0%B7%D0%BE" title="Желязо">желязна</a> <a href="/wiki/%D0%A1%D0%BB%D1%8E%D0%B4%D0%B0" class="mw-redirect" title="Слюда">слюда</a> от клас <a href="/wiki/%D0%A1%D0%B8%D0%BB%D0%B8%D0%BA%D0%B0%D1%82%D0%B8" class="mw-redirect" title="Силикати">силикати</a>.<sup id="cite_ref-1" class="reference"><a href="#cite_note-1"><span class="cite-bracket">[</span>1<span class="cite-bracket">]</span></a></sup> Получава името се през <a href="/wiki/1847" title="1847">1847</a> година в чест на <a href="/wiki/%D0%A4%D1%80%D0%B0%D0%BD%D1%86%D1%83%D0%B7%D0%B8" title="Французи">френския</a> <a href="/wiki/%D0%A4%D0%B8%D0%B7%D0%B8%D0%BA%D0%B0" title="Физика">физик</a>, <a href="/wiki/%D0%90%D1%81%D1%82%D1%80%D0%BE%D0%BD%D0%BE%D0%BC%D0%B8%D1%8F" title="Астрономия">астроном</a> и <a href="/wiki/%D0%9C%D0%B0%D1%82%D0%B5%D0%BC%D0%B0%D1%82%D0%B8%D0%BA%D0%B0" title="Математика">математик</a> от <a href="/wiki/19_%D0%B2%D0%B5%D0%BA" title="19 век">XIX век</a> <a href="/wiki/%D0%96%D0%B0%D0%BD-%D0%91%D0%B0%D1%82%D0%B8%D1%81%D1%82_%D0%91%D0%B8%D0%BE" title="Жан-Батист Био">Жан-Батист Био</a>, изучавал <a href="/wiki/%D0%9E%D0%BF%D1%82%D0%B8%D0%BA%D0%B0" title="Оптика">оптичните</a> свойства на слюдите. По състав е междинен минерал между чисто магнезиевите и чисто железните слюди. Химичната формула на биотита и някои негови разновидности е K(Mg,Fe)<sub>3</sub>[AlSi<sub>3</sub>O<sub>10</sub>](OH,F)<sub>2</sub>.<sup id="cite_ref-ИК_2-0" class="reference"><a href="#cite_note-ИК-2"><span class="cite-bracket">[</span>2<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-МГП_3-0" class="reference"><a href="#cite_note-МГП-3"><span class="cite-bracket">[</span>3<span class="cite-bracket">]</span></a></sup> </p> <meta property="mw:PageProp/toc" /> <div class="mw-heading mw-heading2"><h2 id="Морфология"><span id=".D0.9C.D0.BE.D1.80.D1.84.D0.BE.D0.BB.D0.BE.D0.B3.D0.B8.D1.8F"></span>Морфология</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=%D0%91%D0%B8%D0%BE%D1%82%D0%B8%D1%82&veaction=edit&section=1" title="Редактиране на раздел: Морфология" class="mw-editsection-visualeditor"><span>редактиране</span></a><span class="mw-editsection-divider"> | </span><a href="/w/index.php?title=%D0%91%D0%B8%D0%BE%D1%82%D0%B8%D1%82&action=edit&section=1" title="Edit section's source code: Морфология"><span>редактиране на кода</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>Биотитът е с разнообразен произход, но по правило е ендогенен <a href="/wiki/%D0%9C%D0%B8%D0%BD%D0%B5%D1%80%D0%B0%D0%BB" title="Минерал">минерал</a>, главен <a href="/wiki/%D0%A1%D0%BA%D0%B0%D0%BB%D0%B0" title="Скала">скалообразуващ</a> компонент на много <a href="/wiki/%D0%9C%D0%B0%D0%B3%D0%BC%D0%B5%D0%BD%D0%B8_%D1%81%D0%BA%D0%B0%D0%BB%D0%B8" title="Магмени скали">магмени скали</a>.<sup id="cite_ref-ГЭ_4-0" class="reference"><a href="#cite_note-ГЭ-4"><span class="cite-bracket">[</span>4<span class="cite-bracket">]</span></a></sup> Образува се при <a href="/wiki/%D0%9A%D1%80%D0%B8%D1%81%D1%82%D0%B0%D0%BB%D0%B8%D0%B7%D0%B0%D1%86%D0%B8%D1%8F" title="Кристализация">кристализация</a> на <a href="/wiki/%D0%9C%D0%B0%D0%B3%D0%BC%D0%B0" title="Магма">магмата</a> и влиза в състава както на <a href="/wiki/%D0%98%D0%BD%D1%82%D1%80%D1%83%D0%B7%D0%B8%D0%B2%D0%BD%D0%B8_%D1%81%D0%BA%D0%B0%D0%BB%D0%B8" title="Интрузивни скали">интрузивните скали</a> като <a href="/wiki/%D0%93%D1%80%D0%B0%D0%BD%D0%B8%D1%82" title="Гранит">гранити</a>, <a href="/wiki/%D0%A1%D0%B8%D0%B5%D0%BD%D0%B8%D1%82" title="Сиенит">сиенити</a>, <a href="/w/index.php?title=%D0%94%D0%B8%D0%BE%D1%80%D0%B8%D1%82&action=edit&redlink=1" class="new" title="Диорит (страницата не съществува)">диорити</a>, така и при <a href="/w/index.php?title=%D0%95%D0%BA%D1%81%D1%82%D1%80%D1%83%D0%B7%D0%B8%D0%B2%D0%BD%D0%B0_%D1%81%D0%BA%D0%B0%D0%BB%D0%B0&action=edit&redlink=1" class="new" title="Екструзивна скала (страницата не съществува)">екструзивните</a> <a href="/w/index.php?title=%D0%9B%D0%B8%D0%BF%D0%B0%D1%80%D0%B8%D1%82&action=edit&redlink=1" class="new" title="Липарит (страницата не съществува)">липарити</a> и <a href="/wiki/%D0%A2%D1%80%D0%B0%D1%85%D0%B8%D1%82" title="Трахит">трахити</a>.<sup id="cite_ref-Geolib_5-0" class="reference"><a href="#cite_note-Geolib-5"><span class="cite-bracket">[</span>5<span class="cite-bracket">]</span></a></sup> Образуван при високо <a href="/wiki/%D0%9D%D0%B0%D0%BB%D1%8F%D0%B3%D0%B0%D0%BD%D0%B5" title="Налягане">налягане</a> се среща и при някои <a href="/wiki/%D0%9C%D0%B5%D1%82%D0%B0%D0%BC%D0%BE%D1%80%D1%84%D0%BD%D0%B8_%D1%81%D0%BA%D0%B0%D0%BB%D0%B8" title="Метаморфни скали">метаморфни скали</a> като <a href="/wiki/%D0%93%D0%BD%D0%B0%D0%B9%D1%81" title="Гнайс">гнайси</a> и слюдени <a href="/wiki/%D0%A8%D0%B8%D1%81%D1%82%D0%B8" title="Шисти">шисти</a>.<sup id="cite_ref-ИК_2-1" class="reference"><a href="#cite_note-ИК-2"><span class="cite-bracket">[</span>2<span class="cite-bracket">]</span></a></sup> По-рядко се среща в <a href="/wiki/%D0%9F%D0%B5%D0%B3%D0%BC%D0%B0%D1%82%D0%B8%D1%82" title="Пегматит">пегматитови</a> жили, но там са намерени най-големите кристали биотит.<sup id="cite_ref-ГЭ_4-1" class="reference"><a href="#cite_note-ГЭ-4"><span class="cite-bracket">[</span>4<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-Geolib_5-1" class="reference"><a href="#cite_note-Geolib-5"><span class="cite-bracket">[</span>5<span class="cite-bracket">]</span></a></sup> Може да се получи и в резултат на <a href="/wiki/%D0%A5%D0%B8%D0%BC%D0%B8%D1%8F" title="Химия">химични</a> промени на <a href="/wiki/%D0%90%D0%BC%D1%84%D0%B8%D0%B1%D0%BE%D0%BB" title="Амфибол">амфибола</a> и <a href="/w/index.php?title=%D0%90%D0%B2%D0%B3%D0%B8%D1%82&action=edit&redlink=1" class="new" title="Авгит (страницата не съществува)">авгита</a>.<sup id="cite_ref-Geolib_5-2" class="reference"><a href="#cite_note-Geolib-5"><span class="cite-bracket">[</span>5<span class="cite-bracket">]</span></a></sup> В магмените скали се образува по-късно от останалите силикати, но ако концентрацията на <a href="/wiki/%D0%9A%D0%B0%D0%BB%D0%B8%D0%B9" title="Калий">калия</a> и <a href="/wiki/%D0%92%D0%BE%D0%B4%D0%B0" title="Вода">водата</a> е висока, той може да кристализира и преди тях. Съставът му в скалите се колебае в зависимост от техния химизъм. <a href="/wiki/%D0%A2%D0%B5%D0%BC%D0%BF%D0%B5%D1%80%D0%B0%D1%82%D1%83%D1%80%D0%B0" title="Температура">Температурата</a> му на кристализация варира между 500° и 600 °С.<sup id="cite_ref-ИК_2-2" class="reference"><a href="#cite_note-ИК-2"><span class="cite-bracket">[</span>2<span class="cite-bracket">]</span></a></sup> </p><p>При <a href="/wiki/%D0%98%D0%B7%D0%B2%D0%B5%D1%82%D1%80%D1%8F%D0%BD%D0%B5" title="Изветряне">изветряне</a> и <a href="/wiki/%D0%A5%D0%B8%D0%B4%D1%80%D0%B0%D1%82" title="Хидрат">хидратиране</a> минералът губи стъкления си блясък, характерната <a href="/wiki/%D0%A6%D0%B5%D0%BF%D0%B8%D1%82%D0%B5%D0%BB%D0%BD%D0%BE%D1%81%D1%82" title="Цепителност">цепителност</a> и еластичност, променя <a href="/wiki/%D0%A2%D0%B2%D1%8A%D1%80%D0%B4%D0%BE%D1%81%D1%82" title="Твърдост">твърдостта</a> и <a href="/w/index.php?title=%D0%A1%D0%BF%D0%B5%D1%86%D0%B8%D1%84%D0%B8%D1%87%D0%BD%D0%BE_%D1%82%D0%B5%D0%B3%D0%BB%D0%BE&action=edit&redlink=1" class="new" title="Специфично тегло (страницата не съществува)">специфичното си тегло</a>, а <a href="/wiki/%D0%A6%D0%B2%D1%8F%D1%82_%D0%BD%D0%B0_%D0%BC%D0%B8%D0%BD%D0%B5%D1%80%D0%B0%D0%BB%D0%B8%D1%82%D0%B5" title="Цвят на минералите">цветът</a> му изсветлява.<sup id="cite_ref-МГП_3-1" class="reference"><a href="#cite_note-МГП-3"><span class="cite-bracket">[</span>3<span class="cite-bracket">]</span></a></sup> Губи калия си, който се замества с водни <a href="/wiki/%D0%9C%D0%BE%D0%BB%D0%B5%D0%BA%D1%83%D0%BB%D0%B0" title="Молекула">молекули</a>. Ферокатионите (с валентност 2<sup>+</sup>) в състава му се <a href="/wiki/%D0%9E%D0%BA%D0%B8%D1%81%D0%BB%D0%B8%D1%82%D0%B5%D0%BB%D0%BD%D0%BE-%D1%80%D0%B5%D0%B4%D1%83%D0%BA%D1%86%D0%B8%D0%BE%D0%BD%D0%BD%D0%B8_%D0%BF%D1%80%D0%BE%D1%86%D0%B5%D1%81%D0%B8" title="Окислително-редукционни процеси">окисляват</a> до ферикатиони (с валентност 3<sup>+</sup>), като успоредно с това намалява и съдържанието на магнезий. Този процес протича и при хидротермални условия и води до образуването първо на хидробиотит, след това на <a href="/w/index.php?title=%D0%92%D0%B5%D1%80%D0%BC%D0%B8%D0%BA%D1%83%D0%BB%D0%B8%D1%82&action=edit&redlink=1" class="new" title="Вермикулит (страницата не съществува)">вермикулит</a> и накрая на <a href="/wiki/%D0%9A%D0%B0%D0%BE%D0%BB%D0%B8%D0%BD%D0%B8%D1%82" class="mw-redirect" title="Каолинит">каолинит</a>, като при тази метаморфоза цветът на минерала се променя от почти черен до златистожълт. Такива променени биотити са познати под името рубелан или „котешко злато“, а самият природен процес се нарича <a href="/w/index.php?title=%D0%91%D0%B0%D1%83%D0%BC%D0%B5%D1%80%D0%B8%D0%B7%D0%B0%D1%86%D0%B8%D1%8F&action=edit&redlink=1" class="new" title="Баумеризация (страницата не съществува)">баумеризация</a>.<sup id="cite_ref-ИК_2-3" class="reference"><a href="#cite_note-ИК-2"><span class="cite-bracket">[</span>2<span class="cite-bracket">]</span></a></sup> </p><p>При допълнително химично изветряне биотитът се разлага напълно, образувайки хидрооксиди на желязото и <a href="/wiki/%D0%93%D0%BB%D0%B8%D0%BD%D0%B0" title="Глина">глинести</a> минерали. В процеса на механично изветряне се отнася от течащи води към морските басейни. Там, подложен на влиянието на солената вода, се отлага във вид на <a href="/w/index.php?title=%D0%93%D0%BB%D0%B0%D1%83%D0%BA%D0%BE%D0%BD%D0%B8%D1%82&action=edit&redlink=1" class="new" title="Глауконит (страницата не съществува)">глауконит</a>.<sup id="cite_ref-МГП_3-2" class="reference"><a href="#cite_note-МГП-3"><span class="cite-bracket">[</span>3<span class="cite-bracket">]</span></a></sup> </p><p>В гранитоидите и пегматитите съпътстващите минерали обикновено са <a href="/wiki/%D0%A4%D0%B5%D0%BB%D0%B4%D1%88%D0%BF%D0%B0%D1%82" title="Фелдшпат">фелдшпат</a>, <a href="/wiki/%D0%9A%D0%B2%D0%B0%D1%80%D1%86" title="Кварц">кварц</a>, <a href="/wiki/%D0%93%D1%80%D0%B0%D0%BD%D0%B0%D1%82" title="Гранат">гранат</a>, <a href="/wiki/%D0%9C%D1%83%D1%81%D0%BA%D0%BE%D0%B2%D0%B8%D1%82" title="Мусковит">мусковит</a>; в <a href="/wiki/%D0%9A%D0%B2%D0%B0%D1%80%D1%86%D0%B8%D1%82" title="Кварцит">кварцитите</a> – <a href="/w/index.php?title=%D0%90%D0%BD%D0%B4%D0%B0%D0%BB%D1%83%D0%B7%D0%B8%D1%82&action=edit&redlink=1" class="new" title="Андалузит (страницата не съществува)">андалузит</a>, <a href="/w/index.php?title=%D0%9A%D0%BE%D1%80%D0%B4%D0%B8%D0%B5%D1%80%D0%B8%D1%82&action=edit&redlink=1" class="new" title="Кордиерит (страницата не съществува)">кордиерит</a>, <a href="/w/index.php?title=%D0%A1%D1%82%D0%B0%D0%B2%D1%80%D0%BE%D0%BB%D0%B8%D1%82&action=edit&redlink=1" class="new" title="Ставролит (страницата не съществува)">ставролит</a>, <a href="/wiki/%D0%90%D0%BC%D1%84%D0%B8%D0%B1%D0%BE%D0%BB" title="Амфибол">амфибол</a>; в гнайси и шисти — <a href="/w/index.php?title=%D0%9F%D0%BB%D0%B0%D0%B3%D0%B8%D0%BE%D0%BA%D0%BB%D0%B0%D0%B7&action=edit&redlink=1" class="new" title="Плагиоклаз (страницата не съществува)">плагиоклаз</a>, кварц, мусковит, <a href="/w/index.php?title=%D0%94%D0%B8%D1%81%D1%82%D0%B5%D0%BD&action=edit&redlink=1" class="new" title="Дистен (страницата не съществува)">дистен</a>, <a href="/w/index.php?title=%D0%A1%D0%B8%D0%BB%D0%B8%D0%BC%D0%B0%D0%BD%D0%B8%D1%82&action=edit&redlink=1" class="new" title="Силиманит (страницата не съществува)">силиманит</a> и други.<sup id="cite_ref-МГП_3-3" class="reference"><a href="#cite_note-МГП-3"><span class="cite-bracket">[</span>3<span class="cite-bracket">]</span></a></sup> </p> <div class="mw-heading mw-heading2"><h2 id="Структура"><span id=".D0.A1.D1.82.D1.80.D1.83.D0.BA.D1.82.D1.83.D1.80.D0.B0"></span>Структура</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=%D0%91%D0%B8%D0%BE%D1%82%D0%B8%D1%82&veaction=edit&section=2" title="Редактиране на раздел: Структура" class="mw-editsection-visualeditor"><span>редактиране</span></a><span class="mw-editsection-divider"> | </span><a href="/w/index.php?title=%D0%91%D0%B8%D0%BE%D1%82%D0%B8%D1%82&action=edit&section=2" title="Edit section's source code: Структура"><span>редактиране на кода</span></a><span class="mw-editsection-bracket">]</span></span></div> <figure typeof="mw:File/Thumb"><a href="/wiki/%D0%A4%D0%B0%D0%B9%D0%BB:Biotitverwitterung.jpg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/5/5d/Biotitverwitterung.jpg/200px-Biotitverwitterung.jpg" decoding="async" width="200" height="158" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/5/5d/Biotitverwitterung.jpg/300px-Biotitverwitterung.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/5/5d/Biotitverwitterung.jpg/400px-Biotitverwitterung.jpg 2x" data-file-width="1836" data-file-height="1452" /></a><figcaption>Обмен на калий (червено) и хидратни йони (синьо). <i>а</i> – непроменен биотит, <i>b</i> – обмен на слоевете, <i>с</i> – обмен по ръбовете</figcaption></figure> <p>Структурата на биотита е моноклинно-<a href="/wiki/%D0%9F%D1%80%D0%B8%D0%B7%D0%BC%D0%B0" title="Призма">призматична</a>. В <a href="/wiki/%D0%9A%D1%80%D0%B8%D1%81%D1%82%D0%B0%D0%BB%D0%BD%D0%B0_%D1%80%D0%B5%D1%88%D0%B5%D1%82%D0%BA%D0%B0" title="Кристална решетка">кристалната решетка</a> <a href="/wiki/%D0%A1%D0%B8%D0%BB%D0%B8%D1%86%D0%B8%D0%B9" title="Силиций">силициево</a>-<a href="/wiki/%D0%9A%D0%B8%D1%81%D0%BB%D0%BE%D1%80%D0%BE%D0%B4" title="Кислород">кислородните</a> <a href="/wiki/%D0%A2%D0%B5%D1%82%D1%80%D0%B0%D0%B5%D0%B4%D1%8A%D1%80" title="Тетраедър">тетраедри</a> са групирани в хексагонални пръстени, подредени в слоеве. Поради това биотитът има съвършена <a href="/wiki/%D0%A6%D0%B5%D0%BF%D0%B8%D1%82%D0%B5%D0%BB%D0%BD%D0%BE%D1%81%D1%82" title="Цепителност">цепителност</a> и лесно се разделя на тънките еластични и гъвкави листове.<sup id="cite_ref-Geolib_5-3" class="reference"><a href="#cite_note-Geolib-5"><span class="cite-bracket">[</span>5<span class="cite-bracket">]</span></a></sup> </p><p>Обикновено се среща във вид на псевдохексагонални <a href="/wiki/%D0%9A%D1%80%D0%B8%D1%81%D1%82%D0%B0%D0%BB" title="Кристал">кристали</a>, оформени като плочи, неправилни люспи или люспести агрегати. В съответствие с планарния тип структура на минерала, кристалите се изменят от тънкоплочести до призматични. Призматичните се срещат доста по-рядко и са образувани при бърза кристализация и високо пресищане. В пегматити като тези в <a href="/wiki/%D0%93%D1%80%D0%B5%D0%BD%D0%BB%D0%B0%D0%BD%D0%B4%D0%B8%D1%8F" title="Гренландия">Гренландия</a> и <a href="/wiki/%D0%A1%D0%BA%D0%B0%D0%BD%D0%B4%D0%B8%D0%BD%D0%B0%D0%B2%D0%B8%D1%8F" title="Скандинавия">Скандинавия</a> са намерени огромни биотитовите кристали с размери до около 7 m<sup>2</sup>.<sup id="cite_ref-ИК_2-4" class="reference"><a href="#cite_note-ИК-2"><span class="cite-bracket">[</span>2<span class="cite-bracket">]</span></a></sup> </p> <div class="mw-heading mw-heading2"><h2 id="Разновидности"><span id=".D0.A0.D0.B0.D0.B7.D0.BD.D0.BE.D0.B2.D0.B8.D0.B4.D0.BD.D0.BE.D1.81.D1.82.D0.B8"></span>Разновидности</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=%D0%91%D0%B8%D0%BE%D1%82%D0%B8%D1%82&veaction=edit&section=3" title="Редактиране на раздел: Разновидности" class="mw-editsection-visualeditor"><span>редактиране</span></a><span class="mw-editsection-divider"> | </span><a href="/w/index.php?title=%D0%91%D0%B8%D0%BE%D1%82%D0%B8%D1%82&action=edit&section=3" title="Edit section's source code: Разновидности"><span>редактиране на кода</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>През <a href="/wiki/1998" title="1998">1998</a> година Комисията за номенклатура и класификация към <a href="/wiki/%D0%9C%D0%B5%D0%B6%D0%B4%D1%83%D0%BD%D0%B0%D1%80%D0%BE%D0%B4%D0%BD%D0%B0%D1%82%D0%B0_%D0%BC%D0%B8%D0%BD%D0%B5%D1%80%D0%B0%D0%BB%D0%BE%D0%B3%D0%B8%D1%87%D0%B5%D1%81%D0%BA%D0%B0_%D0%B0%D1%81%D0%BE%D1%86%D0%B8%D0%B0%D1%86%D0%B8%D1%8F" class="mw-redirect" title="Международната минералогическа асоциация">Международната минералогическа асоциация</a> премахва статута на биотита като отделен видов минерал и приема името като наименование на група богати на желязо слюди, включваща следните индивидуални членове: <a href="/w/index.php?title=%D0%A4%D0%BB%D0%BE%D0%B3%D0%BE%D0%BF%D0%B8%D1%82&action=edit&redlink=1" class="new" title="Флогопит (страницата не съществува)">флогопит</a>, <a href="/w/index.php?title=%D0%90%D0%BD%D0%B8%D1%82&action=edit&redlink=1" class="new" title="Анит (страницата не съществува)">анит</a>, <a href="/w/index.php?title=%D0%A1%D0%B8%D0%B4%D0%B5%D1%80%D0%BE%D1%84%D0%B8%D0%BB%D0%B8%D1%82&action=edit&redlink=1" class="new" title="Сидерофилит (страницата не съществува)">сидерофилит</a> и <a href="/w/index.php?title=%D0%98%D0%B9%D1%81%D1%82%D0%BE%D0%BD%D0%B8%D1%82&action=edit&redlink=1" class="new" title="Ийстонит (страницата не съществува)">ийстонит</a>. В литературата и между колекционерите обаче биотитът все още остава с традиционното си име и рядко се прави разграничение между членовете на групата, с изключение на флогопита.<sup id="cite_ref-Mindat_6-0" class="reference"><a href="#cite_note-Mindat-6"><span class="cite-bracket">[</span>6<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-Kingdom_7-0" class="reference"><a href="#cite_note-Kingdom-7"><span class="cite-bracket">[</span>7<span class="cite-bracket">]</span></a></sup> Понякога името се използва и за всички слюди с тъмен цвят.<sup id="cite_ref-Mindat_6-1" class="reference"><a href="#cite_note-Mindat-6"><span class="cite-bracket">[</span>6<span class="cite-bracket">]</span></a></sup> </p><p>Тъй като съставът на <a href="/wiki/%D0%9E%D0%BA%D1%81%D0%B8%D0%B4" title="Оксид">оксидите</a> на различните <a href="/wiki/%D0%A5%D0%B8%D0%BC%D0%B8%D1%87%D0%B5%D0%BD_%D0%B5%D0%BB%D0%B5%D0%BC%D0%B5%D0%BD%D1%82" title="Химичен елемент">химични елементи</a> в биотита, съотношението между тях и наличието на множество примеси са твърде разнообразни, той формира доста разновидности: </p> <figure typeof="mw:File/Thumb"><a href="/wiki/%D0%A4%D0%B0%D0%B9%D0%BB:Biotita1.jpeg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/a/aa/Biotita1.jpeg/250px-Biotita1.jpeg" decoding="async" width="250" height="282" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/a/aa/Biotita1.jpeg/375px-Biotita1.jpeg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/a/aa/Biotita1.jpeg/500px-Biotita1.jpeg 2x" data-file-width="676" data-file-height="762" /></a><figcaption>Биотит, нагънат при тектонски процеси - <a href="/wiki/%D0%A0%D0%B8%D0%BE_%D0%B4%D0%B5_%D0%96%D0%B0%D0%BD%D0%B5%D0%B9%D1%80%D0%BE" title="Рио де Жанейро">Рио де Жанейро</a>, <a href="/wiki/%D0%9A%D0%B0%D0%BC%D0%B1%D1%80%D0%B8%D0%B9" title="Камбрий">докамбрийска</a> възраст</figcaption></figure> <figure typeof="mw:File/Thumb"><a href="/wiki/%D0%A4%D0%B0%D0%B9%D0%BB:Biotite_big_aggregate_-_Ochtendung,_Eifel,_Germany.jpg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/9/98/Biotite_big_aggregate_-_Ochtendung%2C_Eifel%2C_Germany.jpg/250px-Biotite_big_aggregate_-_Ochtendung%2C_Eifel%2C_Germany.jpg" decoding="async" width="250" height="188" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/9/98/Biotite_big_aggregate_-_Ochtendung%2C_Eifel%2C_Germany.jpg/375px-Biotite_big_aggregate_-_Ochtendung%2C_Eifel%2C_Germany.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/9/98/Biotite_big_aggregate_-_Ochtendung%2C_Eifel%2C_Germany.jpg/500px-Biotite_big_aggregate_-_Ochtendung%2C_Eifel%2C_Germany.jpg 2x" data-file-width="922" data-file-height="692" /></a><figcaption>Биотит в комбинация със <a href="/w/index.php?title=%D0%A1%D0%B0%D0%BD%D0%B8%D0%B4%D0%B8%D0%BD&action=edit&redlink=1" class="new" title="Санидин (страницата не съществува)">санидин</a> и <a href="/wiki/%D0%9D%D0%B5%D1%84%D0%B5%D0%BB%D0%B8%D0%BD" title="Нефелин">нефелин</a> - <a href="/wiki/%D0%90%D0%B9%D1%84%D0%B5%D0%BB_(%D0%BF%D0%BB%D0%B0%D0%BD%D0%B8%D0%BD%D0%B0)" class="mw-redirect" title="Айфел (планина)">планината Айфел</a>, <a href="/wiki/%D0%93%D0%B5%D1%80%D0%BC%D0%B0%D0%BD%D0%B8%D1%8F" title="Германия">Германия</a></figcaption></figure> <figure typeof="mw:File/Thumb"><a href="/wiki/%D0%A4%D0%B0%D0%B9%D0%BB:BiotitaEZ.jpg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/3/3c/BiotitaEZ.jpg/250px-BiotitaEZ.jpg" decoding="async" width="250" height="230" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/3/3c/BiotitaEZ.jpg/375px-BiotitaEZ.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/3/3c/BiotitaEZ.jpg/500px-BiotitaEZ.jpg 2x" data-file-width="879" data-file-height="810" /></a><figcaption>Черен биотит от <a href="/wiki/%D0%91%D1%80%D0%B0%D0%B7%D0%B8%D0%BB%D0%B8%D1%8F" title="Бразилия">Бразилия</a></figcaption></figure> <figure typeof="mw:File/Thumb"><a href="/wiki/%D0%A4%D0%B0%D0%B9%D0%BB:Beryl-Biotite-177331.jpg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/2/2d/Beryl-Biotite-177331.jpg/250px-Beryl-Biotite-177331.jpg" decoding="async" width="250" height="227" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/2/2d/Beryl-Biotite-177331.jpg/375px-Beryl-Biotite-177331.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/2/2d/Beryl-Biotite-177331.jpg 2x" data-file-width="450" data-file-height="408" /></a><figcaption>Биотит със зелени късчета <a href="/wiki/%D0%91%D0%B5%D1%80%D0%B8%D0%BB" title="Берил">берил</a> - долината <i>Habach</i>, <a href="/wiki/%D0%90%D0%B2%D1%81%D1%82%D1%80%D0%B8%D1%8F" title="Австрия">Австрия</a></figcaption></figure> <figure typeof="mw:File/Thumb"><a href="/wiki/%D0%A4%D0%B0%D0%B9%D0%BB:Biotite_aggregate_-_Ochtendung,_Eifel,_Germany.jpg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/c/c8/Biotite_aggregate_-_Ochtendung%2C_Eifel%2C_Germany.jpg/250px-Biotite_aggregate_-_Ochtendung%2C_Eifel%2C_Germany.jpg" decoding="async" width="250" height="188" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/c/c8/Biotite_aggregate_-_Ochtendung%2C_Eifel%2C_Germany.jpg/375px-Biotite_aggregate_-_Ochtendung%2C_Eifel%2C_Germany.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/c/c8/Biotite_aggregate_-_Ochtendung%2C_Eifel%2C_Germany.jpg/500px-Biotite_aggregate_-_Ochtendung%2C_Eifel%2C_Germany.jpg 2x" data-file-width="921" data-file-height="691" /></a><figcaption>Биотит от Айфел, Германия</figcaption></figure> <figure typeof="mw:File/Thumb"><a href="/wiki/%D0%A4%D0%B0%D0%B9%D0%BB:Orthoclase-Biotite-249237.jpg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/8/8c/Orthoclase-Biotite-249237.jpg/250px-Orthoclase-Biotite-249237.jpg" decoding="async" width="250" height="289" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/8/8c/Orthoclase-Biotite-249237.jpg 1.5x" data-file-width="346" data-file-height="400" /></a><figcaption>Ортоклаз с биотит – долината <i>Basha</i>, <a href="/wiki/%D0%9F%D0%B0%D0%BA%D0%B8%D1%81%D1%82%D0%B0%D0%BD" title="Пакистан">Пакистан</a></figcaption></figure> <figure typeof="mw:File/Thumb"><a href="/wiki/%D0%A4%D0%B0%D0%B9%D0%BB:BiotiteSomma.jpg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/f/fe/BiotiteSomma.jpg/250px-BiotiteSomma.jpg" decoding="async" width="250" height="146" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/f/fe/BiotiteSomma.jpg/375px-BiotiteSomma.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/f/fe/BiotiteSomma.jpg/500px-BiotiteSomma.jpg 2x" data-file-width="4239" data-file-height="2475" /></a><figcaption>Мероксен от <a href="/wiki/%D0%9A%D0%B0%D0%BC%D0%BF%D0%B0%D0%BD%D0%B8%D1%8F" title="Кампания">Кампания</a>, <a href="/wiki/%D0%98%D1%82%D0%B0%D0%BB%D0%B8%D1%8F" title="Италия">Италия</a></figcaption></figure> <ul><li>Аномит – биотит, чиято равнина на оптичните оси е перпендикулярна на (010)<sup id="cite_ref-ИК_2-5" class="reference"><a href="#cite_note-ИК-2"><span class="cite-bracket">[</span>2<span class="cite-bracket">]</span></a></sup></li> <li>Бариобиотит – със съдържание на <a href="/wiki/%D0%91%D0%B0%D1%80%D0%B8%D0%B9" title="Барий">барий</a><sup id="cite_ref-Геол_8-0" class="reference"><a href="#cite_note-Геол-8"><span class="cite-bracket">[</span>8<span class="cite-bracket">]</span></a></sup></li> <li>Воданит<sup id="cite_ref-Геол_8-1" class="reference"><a href="#cite_note-Геол-8"><span class="cite-bracket">[</span>8<span class="cite-bracket">]</span></a></sup></li> <li>Ийстонит – черен биотит, носещ името си от <i>Easton</i>, <a href="/wiki/%D0%9F%D0%B5%D0%BD%D1%81%D0%B8%D0%BB%D0%B2%D0%B0%D0%BD%D0%B8%D1%8F" title="Пенсилвания">Пенсилвания</a>.<sup id="cite_ref-Mindat_6-2" class="reference"><a href="#cite_note-Mindat-6"><span class="cite-bracket">[</span>6<span class="cite-bracket">]</span></a></sup></li> <li>Лепидомелан – черен биотит, богат на желязо. Името му произлиза от <a href="/wiki/%D0%93%D1%80%D1%8A%D1%86%D0%BA%D0%B8_%D0%B5%D0%B7%D0%B8%D0%BA" title="Гръцки език">гръцките</a> <i>лепис</i> (λεπίς) – люспа и <i>мелас</i> (μέλας) – черен.<sup id="cite_ref-ИК_2-6" class="reference"><a href="#cite_note-ИК-2"><span class="cite-bracket">[</span>2<span class="cite-bracket">]</span></a></sup></li> <li>Литиев биотит – съдържа <a href="/wiki/%D0%9B%D0%B8%D1%82%D0%B8%D0%B9" title="Литий">литий</a><sup id="cite_ref-Геол_8-2" class="reference"><a href="#cite_note-Геол-8"><span class="cite-bracket">[</span>8<span class="cite-bracket">]</span></a></sup></li> <li>Манганофилит – биотит, съдържащ около 18% MnO<sup id="cite_ref-ИК_2-7" class="reference"><a href="#cite_note-ИК-2"><span class="cite-bracket">[</span>2<span class="cite-bracket">]</span></a></sup></li> <li>Мероксен – Нормален, беден на желязо биотит, с равнина на оптичните оси успоредна на (010). Среща се на <a href="/wiki/%D0%92%D0%B5%D0%B7%D1%83%D0%B2%D0%B8%D0%B9" title="Везувий">Везувий</a> заедно с авгит и <a href="/w/index.php?title=%D0%9B%D0%B5%D0%B2%D1%86%D0%B8%D1%82&action=edit&redlink=1" class="new" title="Левцит (страницата не съществува)">левцит</a>. Името идва от гръцката дума ξένος — чужд.<sup id="cite_ref-ИК_2-8" class="reference"><a href="#cite_note-ИК-2"><span class="cite-bracket">[</span>2<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-СИС_9-0" class="reference"><a href="#cite_note-СИС-9"><span class="cite-bracket">[</span>9<span class="cite-bracket">]</span></a></sup></li> <li>Монрепит<sup id="cite_ref-Геол_8-3" class="reference"><a href="#cite_note-Геол-8"><span class="cite-bracket">[</span>8<span class="cite-bracket">]</span></a></sup></li> <li>Натронбиотит – съдържа <a href="/wiki/%D0%9D%D0%B0%D1%82%D1%80%D0%B8%D0%B9" title="Натрий">натрий</a> вместо калий<sup id="cite_ref-ИК_2-9" class="reference"><a href="#cite_note-ИК-2"><span class="cite-bracket">[</span>2<span class="cite-bracket">]</span></a></sup></li> <li>Оксибиотит – споменат в списанието <i>„Mineralogical Magazine“</i> от <a href="/wiki/1972" title="1972">1972</a> година, като не е включен официално в разновидностите на биотита.<sup id="cite_ref-Mindat_6-3" class="reference"><a href="#cite_note-Mindat-6"><span class="cite-bracket">[</span>6<span class="cite-bracket">]</span></a></sup></li> <li>Оксилепидомелан — биотит във вулканичните скали, който съдържа значително количество ферижелязо.<sup id="cite_ref-ИК_2-10" class="reference"><a href="#cite_note-ИК-2"><span class="cite-bracket">[</span>2<span class="cite-bracket">]</span></a></sup></li> <li>Рубелан – Кафяв до керемиденочервен биотит, загубил калия си, който е заместен от водни молекули. Среща се в ефузивни скални породи.<sup id="cite_ref-ИК_2-11" class="reference"><a href="#cite_note-ИК-2"><span class="cite-bracket">[</span>2<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-Geolib_5-4" class="reference"><a href="#cite_note-Geolib-5"><span class="cite-bracket">[</span>5<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-Самоцвет_10-0" class="reference"><a href="#cite_note-Самоцвет-10"><span class="cite-bracket">[</span>10<span class="cite-bracket">]</span></a></sup></li> <li>Тетраферибиотит<sup id="cite_ref-Геол_8-4" class="reference"><a href="#cite_note-Геол-8"><span class="cite-bracket">[</span>8<span class="cite-bracket">]</span></a></sup></li> <li>Титанбиотит – Само във вулканични скали, съдържа <a href="/wiki/%D0%A2%D0%B8%D1%82%D0%B0%D0%BD_(%D0%B5%D0%BB%D0%B5%D0%BC%D0%B5%D0%BD%D1%82)" title="Титан (елемент)">титан</a>, достигащ до 12% при воданита.<sup id="cite_ref-ИК_2-12" class="reference"><a href="#cite_note-ИК-2"><span class="cite-bracket">[</span>2<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-Mindat_6-4" class="reference"><a href="#cite_note-Mindat-6"><span class="cite-bracket">[</span>6<span class="cite-bracket">]</span></a></sup></li> <li>Хромбиотит – съдържа хром<sup id="cite_ref-Геол_8-5" class="reference"><a href="#cite_note-Геол-8"><span class="cite-bracket">[</span>8<span class="cite-bracket">]</span></a></sup></li> <li>Цезиев биотит – съдържа цезий<sup id="cite_ref-Геол_8-6" class="reference"><a href="#cite_note-Геол-8"><span class="cite-bracket">[</span>8<span class="cite-bracket">]</span></a></sup></li></ul> <div class="mw-heading mw-heading2"><h2 id="Химичен_състав_и_свойства"><span id=".D0.A5.D0.B8.D0.BC.D0.B8.D1.87.D0.B5.D0.BD_.D1.81.D1.8A.D1.81.D1.82.D0.B0.D0.B2_.D0.B8_.D1.81.D0.B2.D0.BE.D0.B9.D1.81.D1.82.D0.B2.D0.B0"></span>Химичен състав и свойства</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=%D0%91%D0%B8%D0%BE%D1%82%D0%B8%D1%82&veaction=edit&section=4" title="Редактиране на раздел: Химичен състав и свойства" class="mw-editsection-visualeditor"><span>редактиране</span></a><span class="mw-editsection-divider"> | </span><a href="/w/index.php?title=%D0%91%D0%B8%D0%BE%D1%82%D0%B8%D1%82&action=edit&section=4" title="Edit section's source code: Химичен състав и свойства"><span>редактиране на кода</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>Химичният състав на биотита е силно променлив, което е причината и за многобройните му разновидности. Минералът съдържа:<sup id="cite_ref-Самоцвет_10-1" class="reference"><a href="#cite_note-Самоцвет-10"><span class="cite-bracket">[</span>10<span class="cite-bracket">]</span></a></sup> </p> <ul><li>калиев оксид (K<sub>2</sub>O) – 4,5-8,5%</li> <li>магнезиев оксид (MgO) – 0,3-28%</li> <li>железен оксид (FeO) – 2,8-27,5%</li> <li>железен оксид (Fe<sub>2</sub>O<sub>3</sub>) – 0,3-20,5%</li> <li>алуминиев оксид (Al<sub>2</sub>O<sub>3</sub>) – 9,5-31,5%</li> <li>силициев диоксид (SiO<sub>2</sub>) – 33-45%</li> <li>вода (H<sub>2</sub>O) – 6-11,5%</li> <li>примеси – <a href="/wiki/%D0%9E%D0%BA%D1%81%D0%B8%D0%B4" title="Оксид">оксиди</a> на <a href="/wiki/%D0%A2%D0%B8%D1%82%D0%B0%D0%BD_(%D0%B5%D0%BB%D0%B5%D0%BC%D0%B5%D0%BD%D1%82)" title="Титан (елемент)">титана</a>, <a href="/wiki/%D0%9D%D0%B0%D1%82%D1%80%D0%B8%D0%B9" title="Натрий">натрия</a>, <a href="/wiki/%D0%9B%D0%B8%D1%82%D0%B8%D0%B9" title="Литий">лития</a>, <a href="/wiki/%D0%9C%D0%B0%D0%BD%D0%B3%D0%B0%D0%BD" title="Манган">мангана</a>, <a href="/wiki/%D0%91%D0%B0%D1%80%D0%B8%D0%B9" title="Барий">бария</a>, <a href="/wiki/%D0%A1%D1%82%D1%80%D0%BE%D0%BD%D1%86%D0%B8%D0%B9" title="Стронций">стронция</a> и <a href="/wiki/%D0%A6%D0%B5%D0%B7%D0%B8%D0%B9" title="Цезий">цезия</a></li></ul> <p>Биотитът лесно се разтваря от концентрирана <a href="/wiki/%D0%A1%D1%8F%D1%80%D0%BD%D0%B0_%D0%BA%D0%B8%D1%81%D0%B5%D0%BB%D0%B8%D0%BD%D0%B0" title="Сярна киселина">сярна киселина</a>. В пламъка на свещта бързо започва да се топи по ръбовете. Под въздействие на <a href="/wiki/%D0%90%D1%82%D0%BC%D0%BE%D1%81%D1%84%D0%B5%D1%80%D0%B0" title="Атмосфера">атмосферните</a> влияния се изменя, превръщайки се в зелен <a href="/w/index.php?title=%D0%A5%D0%BB%D0%BE%D1%80%D0%B8%D1%82&action=edit&redlink=1" class="new" title="Хлорит (страницата не съществува)">хлорит</a> или безцветен до почти безцветен мусковит.<sup id="cite_ref-Самоцвет_10-2" class="reference"><a href="#cite_note-Самоцвет-10"><span class="cite-bracket">[</span>10<span class="cite-bracket">]</span></a></sup> </p> <div class="mw-heading mw-heading2"><h2 id="Физични_свойства"><span id=".D0.A4.D0.B8.D0.B7.D0.B8.D1.87.D0.BD.D0.B8_.D1.81.D0.B2.D0.BE.D0.B9.D1.81.D1.82.D0.B2.D0.B0"></span>Физични свойства</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=%D0%91%D0%B8%D0%BE%D1%82%D0%B8%D1%82&veaction=edit&section=5" title="Редактиране на раздел: Физични свойства" class="mw-editsection-visualeditor"><span>редактиране</span></a><span class="mw-editsection-divider"> | </span><a href="/w/index.php?title=%D0%91%D0%B8%D0%BE%D1%82%D0%B8%D1%82&action=edit&section=5" title="Edit section's source code: Физични свойства"><span>редактиране на кода</span></a><span class="mw-editsection-bracket">]</span></span></div> <ul><li><a href="/wiki/%D0%A1%D0%BA%D0%B0%D0%BB%D0%B0_%D0%BD%D0%B0_%D0%9C%D0%BE%D0%BE%D1%81" title="Скала на Моос">Твърдост по скалата на Моос</a> – 2,5-3<sup id="cite_ref-ИК_2-13" class="reference"><a href="#cite_note-ИК-2"><span class="cite-bracket">[</span>2<span class="cite-bracket">]</span></a></sup></li> <li><a href="/wiki/%D0%9E%D1%82%D0%BD%D0%BE%D1%81%D0%B8%D1%82%D0%B5%D0%BB%D0%BD%D0%BE_%D1%82%D0%B5%D0%B3%D0%BB%D0%BE_%D0%B8_%D0%BF%D0%BB%D1%8A%D1%82%D0%BD%D0%BE%D1%81%D1%82_%D0%BD%D0%B0_%D0%BC%D0%B8%D0%BD%D0%B5%D1%80%D0%B0%D0%BB%D0%B8%D1%82%D0%B5" title="Относително тегло и плътност на минералите">Плътност</a> – 2,7 g/cm<sup>3</sup><sup id="cite_ref-ГЭ_4-2" class="reference"><a href="#cite_note-ГЭ-4"><span class="cite-bracket">[</span>4<span class="cite-bracket">]</span></a></sup></li> <li><a href="/wiki/%D0%9E%D1%82%D0%BD%D0%BE%D1%81%D0%B8%D1%82%D0%B5%D0%BB%D0%BD%D0%BE_%D1%82%D0%B5%D0%B3%D0%BB%D0%BE_%D0%B8_%D0%BF%D0%BB%D1%8A%D1%82%D0%BD%D0%BE%D1%81%D1%82_%D0%BD%D0%B0_%D0%BC%D0%B8%D0%BD%D0%B5%D1%80%D0%B0%D0%BB%D0%B8%D1%82%D0%B5" title="Относително тегло и плътност на минералите">Относително тегло</a> – 2,8-3,2, което се увеличава с увеличение на съдържанието на желязо.<sup id="cite_ref-ИК_2-14" class="reference"><a href="#cite_note-ИК-2"><span class="cite-bracket">[</span>2<span class="cite-bracket">]</span></a></sup></li> <li><a href="/wiki/%D0%9C%D0%BE%D0%BB%D0%B5%D0%BA%D1%83%D0%BB%D0%BD%D0%B0_%D0%BC%D0%B0%D1%81%D0%B0" title="Молекулна маса">Молекулно тегло</a> — 433,53 g<sup id="cite_ref-Database_11-0" class="reference"><a href="#cite_note-Database-11"><span class="cite-bracket">[</span>11<span class="cite-bracket">]</span></a></sup></li> <li><a href="/wiki/%D0%A6%D0%B5%D0%BF%D0%B8%D1%82%D0%B5%D0%BB%D0%BD%D0%BE%D1%81%D1%82" title="Цепителност">Цепителност</a> – съвършена по (001). Понякога показва относителност по (001) и (110) съответстваща на посоката на удар, като по-дългите лъчи отговарят на посоката (010)<sup id="cite_ref-ИК_2-15" class="reference"><a href="#cite_note-ИК-2"><span class="cite-bracket">[</span>2<span class="cite-bracket">]</span></a></sup></li> <li><a href="/wiki/%D0%9B%D0%BE%D0%BC_(%D0%BC%D0%B8%D0%BD%D0%B5%D1%80%D0%B0%D0%BB%D0%BE%D0%B3%D0%B8%D1%8F)" title="Лом (минералогия)">Лом</a> – неравен<sup id="cite_ref-Database_11-1" class="reference"><a href="#cite_note-Database-11"><span class="cite-bracket">[</span>11<span class="cite-bracket">]</span></a></sup></li> <li><a href="/wiki/%D0%95%D0%BB%D0%B0%D1%81%D1%82%D0%B8%D1%87%D0%BD%D0%B0_%D0%B4%D0%B5%D1%84%D0%BE%D1%80%D0%BC%D0%B0%D1%86%D0%B8%D1%8F" title="Еластична деформация">Еластичност</a> – еластичен, гъвкав, разделя се на тънки листа<sup id="cite_ref-ИК_2-16" class="reference"><a href="#cite_note-ИК-2"><span class="cite-bracket">[</span>2<span class="cite-bracket">]</span></a></sup></li> <li>Кристално сдвояване – често по [310], по-рядко по {001}<sup id="cite_ref-Hand_12-0" class="reference"><a href="#cite_note-Hand-12"><span class="cite-bracket">[</span>12<span class="cite-bracket">]</span></a></sup></li></ul> <div class="mw-heading mw-heading2"><h2 id="Оптични_свойства"><span id=".D0.9E.D0.BF.D1.82.D0.B8.D1.87.D0.BD.D0.B8_.D1.81.D0.B2.D0.BE.D0.B9.D1.81.D1.82.D0.B2.D0.B0"></span>Оптични свойства</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=%D0%91%D0%B8%D0%BE%D1%82%D0%B8%D1%82&veaction=edit&section=6" title="Редактиране на раздел: Оптични свойства" class="mw-editsection-visualeditor"><span>редактиране</span></a><span class="mw-editsection-divider"> | </span><a href="/w/index.php?title=%D0%91%D0%B8%D0%BE%D1%82%D0%B8%D1%82&action=edit&section=6" title="Edit section's source code: Оптични свойства"><span>редактиране на кода</span></a><span class="mw-editsection-bracket">]</span></span></div> <ul><li><a href="/wiki/%D0%A6%D0%B2%D1%8F%D1%82_%D0%BD%D0%B0_%D0%BC%D0%B8%D0%BD%D0%B5%D1%80%D0%B0%D0%BB%D0%B8%D1%82%D0%B5" title="Цвят на минералите">Цвят</a> – черен, тъмнозелен, тъмнокафяв със силен плеохроизъм. Тъмните цветове се появяват в посока на цепителните плоскости. Перпендикулярно на тях цветът е бледожълт до безцветен.<sup id="cite_ref-ИК_2-17" class="reference"><a href="#cite_note-ИК-2"><span class="cite-bracket">[</span>2<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-Самоцвет_10-3" class="reference"><a href="#cite_note-Самоцвет-10"><span class="cite-bracket">[</span>10<span class="cite-bracket">]</span></a></sup></li> <li>Плеохроизъм – силен. По <i>Х</i> – сивожълт, жълтокафяв, жълт, червеникав. По <i>Y=Z</i> – тъмнозелен, тъмнокафяв, тъмно кафявочервен до черен<sup id="cite_ref-Hand_12-1" class="reference"><a href="#cite_note-Hand-12"><span class="cite-bracket">[</span>12<span class="cite-bracket">]</span></a></sup></li> <li><a href="/wiki/%D0%A6%D0%B2%D1%8F%D1%82_%D0%BD%D0%B0_%D1%87%D0%B5%D1%80%D1%82%D0%B0%D1%82%D0%B0_(%D0%BC%D0%B8%D0%BD%D0%B5%D1%80%D0%B0%D0%BB%D0%BE%D0%B3%D0%B8%D1%8F)" title="Цвят на чертата (минералогия)">Цвят на чертата</a> – бял, а при някои разновидности — сивозелен<sup id="cite_ref-Geolib_5-5" class="reference"><a href="#cite_note-Geolib-5"><span class="cite-bracket">[</span>5<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-Самоцвет_10-4" class="reference"><a href="#cite_note-Самоцвет-10"><span class="cite-bracket">[</span>10<span class="cite-bracket">]</span></a></sup></li> <li>Прозрачност – в тънки пластини – прозрачен, в по-плътни – непрозрачен, просветляващ в краищата.<sup id="cite_ref-Самоцвет_10-5" class="reference"><a href="#cite_note-Самоцвет-10"><span class="cite-bracket">[</span>10<span class="cite-bracket">]</span></a></sup></li> <li>Блясък – бисерен до стъклен; метален при изветрени повърхности<sup id="cite_ref-Самоцвет_10-6" class="reference"><a href="#cite_note-Самоцвет-10"><span class="cite-bracket">[</span>10<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-Database_11-2" class="reference"><a href="#cite_note-Database-11"><span class="cite-bracket">[</span>11<span class="cite-bracket">]</span></a></sup></li> <li>Оптичен клас – биаксиален (-)<sup id="cite_ref-Hand_12-2" class="reference"><a href="#cite_note-Hand-12"><span class="cite-bracket">[</span>12<span class="cite-bracket">]</span></a></sup></li> <li>Оптична ориентация – <i>Y = b</i>, <i>X^c = 0°-3°</i>, <i>Z^a = 0°-9°</i>, оптична равнина (010)<sup id="cite_ref-Hand_12-3" class="reference"><a href="#cite_note-Hand-12"><span class="cite-bracket">[</span>12<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-Smith_13-0" class="reference"><a href="#cite_note-Smith-13"><span class="cite-bracket">[</span>13<span class="cite-bracket">]</span></a></sup></li> <li><a href="/wiki/%D0%94%D0%B8%D1%81%D0%BF%D0%B5%D1%80%D1%81%D0%B8%D1%8F_(%D0%BE%D0%BF%D1%82%D0%B8%D0%BA%D0%B0)" title="Дисперсия (оптика)">Оптична дисперсия</a> – При по-високо съдържание на желязо — <i>r<v</i>, при по-високо съдържание на магнезий — <i>r>v</i><sup id="cite_ref-Hand_12-4" class="reference"><a href="#cite_note-Hand-12"><span class="cite-bracket">[</span>12<span class="cite-bracket">]</span></a></sup></li> <li><a href="/wiki/%D0%9F%D0%BE%D0%BA%D0%B0%D0%B7%D0%B0%D1%82%D0%B5%D0%BB_%D0%BD%D0%B0_%D0%BF%D1%80%D0%B5%D1%87%D1%83%D0%BF%D0%B2%D0%B0%D0%BD%D0%B5" title="Показател на пречупване">Показател на пречупване</a> — nα =1,522-1,625; nβ =1,548-1,672; nγ =,549-1,696<sup id="cite_ref-Smith_13-1" class="reference"><a href="#cite_note-Smith-13"><span class="cite-bracket">[</span>13<span class="cite-bracket">]</span></a></sup></li> <li>Максимално двойно лъчепречупване – δ = 0,03–0,07<sup id="cite_ref-Hand_12-5" class="reference"><a href="#cite_note-Hand-12"><span class="cite-bracket">[</span>12<span class="cite-bracket">]</span></a></sup></li> <li><a href="/wiki/%D0%9B%D1%83%D0%BC%D0%B8%D0%BD%D0%B5%D1%81%D1%86%D0%B5%D0%BD%D1%86%D0%B8%D1%8F" title="Луминесценция">Луминесценция</a> – няма<sup id="cite_ref-Hand_12-6" class="reference"><a href="#cite_note-Hand-12"><span class="cite-bracket">[</span>12<span class="cite-bracket">]</span></a></sup></li> <li><a href="/wiki/%D0%A4%D0%BB%D1%83%D0%BE%D1%80%D0%B5%D1%81%D1%86%D0%B5%D0%BD%D1%86%D0%B8%D1%8F" title="Флуоресценция">Флуоресценция</a> — няма<sup id="cite_ref-Hand_12-7" class="reference"><a href="#cite_note-Hand-12"><span class="cite-bracket">[</span>12<span class="cite-bracket">]</span></a></sup></li></ul> <div class="mw-heading mw-heading2"><h2 id="Кристалографски_свойства"><span id=".D0.9A.D1.80.D0.B8.D1.81.D1.82.D0.B0.D0.BB.D0.BE.D0.B3.D1.80.D0.B0.D1.84.D1.81.D0.BA.D0.B8_.D1.81.D0.B2.D0.BE.D0.B9.D1.81.D1.82.D0.B2.D0.B0"></span>Кристалографски свойства</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=%D0%91%D0%B8%D0%BE%D1%82%D0%B8%D1%82&veaction=edit&section=7" title="Редактиране на раздел: Кристалографски свойства" class="mw-editsection-visualeditor"><span>редактиране</span></a><span class="mw-editsection-divider"> | </span><a href="/w/index.php?title=%D0%91%D0%B8%D0%BE%D1%82%D0%B8%D1%82&action=edit&section=7" title="Edit section's source code: Кристалографски свойства"><span>редактиране на кода</span></a><span class="mw-editsection-bracket">]</span></span></div> <ul><li><a href="/wiki/%D0%9A%D1%80%D0%B8%D1%81%D1%82%D0%B0%D0%BB%D0%BD%D0%B0_%D1%81%D1%82%D1%80%D1%83%D0%BA%D1%82%D1%83%D1%80%D0%B0" title="Кристална структура">Кристална структура</a> – моноклинно-призматична, псевдохексагонална, слоиста решетка<sup id="cite_ref-ИК_2-18" class="reference"><a href="#cite_note-ИК-2"><span class="cite-bracket">[</span>2<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-Самоцвет_10-7" class="reference"><a href="#cite_note-Самоцвет-10"><span class="cite-bracket">[</span>10<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-Database_11-3" class="reference"><a href="#cite_note-Database-11"><span class="cite-bracket">[</span>11<span class="cite-bracket">]</span></a></sup></li> <li>Пространствена група — <i>C 2/m</i><sup id="cite_ref-Hand_12-8" class="reference"><a href="#cite_note-Hand-12"><span class="cite-bracket">[</span>12<span class="cite-bracket">]</span></a></sup></li> <li><a href="/wiki/%D0%A1%D0%B8%D0%BC%D0%B5%D1%82%D1%80%D0%B8%D1%8F" title="Симетрия">Клас на симетрия</a> — моноклинна – <i>2/m</i> и β=100°<sup id="cite_ref-Самоцвет_10-8" class="reference"><a href="#cite_note-Самоцвет-10"><span class="cite-bracket">[</span>10<span class="cite-bracket">]</span></a></sup></li> <li><a href="/wiki/%D0%A1%D0%B8%D0%BD%D0%B3%D0%BE%D0%BD%D0%B8%D1%8F" title="Сингония">Сингония</a> – моноклинна<sup id="cite_ref-ИК_2-19" class="reference"><a href="#cite_note-ИК-2"><span class="cite-bracket">[</span>2<span class="cite-bracket">]</span></a></sup></li> <li>Кристален хабитус — псевдохексагонални призми или ламелни плочи без кристален контур.<sup id="cite_ref-Smith_13-2" class="reference"><a href="#cite_note-Smith-13"><span class="cite-bracket">[</span>13<span class="cite-bracket">]</span></a></sup></li> <li>Параметри на елементарната клетка – a = 5,3Å; b = 9,2Å; c = 10,2Å; Z = 2<sup id="cite_ref-Hand_12-9" class="reference"><a href="#cite_note-Hand-12"><span class="cite-bracket">[</span>12<span class="cite-bracket">]</span></a></sup></li></ul> <div class="mw-heading mw-heading2"><h2 id="Други_характеристики"><span id=".D0.94.D1.80.D1.83.D0.B3.D0.B8_.D1.85.D0.B0.D1.80.D0.B0.D0.BA.D1.82.D0.B5.D1.80.D0.B8.D1.81.D1.82.D0.B8.D0.BA.D0.B8"></span>Други характеристики</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=%D0%91%D0%B8%D0%BE%D1%82%D0%B8%D1%82&veaction=edit&section=8" title="Редактиране на раздел: Други характеристики" class="mw-editsection-visualeditor"><span>редактиране</span></a><span class="mw-editsection-divider"> | </span><a href="/w/index.php?title=%D0%91%D0%B8%D0%BE%D1%82%D0%B8%D1%82&action=edit&section=8" title="Edit section's source code: Други характеристики"><span>редактиране на кода</span></a><span class="mw-editsection-bracket">]</span></span></div> <ul><li>Клас – <a href="/wiki/%D0%A1%D0%B8%D0%BB%D0%B8%D0%BA%D0%B0%D1%82%D0%B8" class="mw-redirect" title="Силикати">силикати</a><sup id="cite_ref-ИК_2-20" class="reference"><a href="#cite_note-ИК-2"><span class="cite-bracket">[</span>2<span class="cite-bracket">]</span></a></sup></li> <li>Група – <a href="/wiki/%D0%A1%D0%BB%D1%8E%D0%B4%D0%B8" title="Слюди">слюди</a><sup id="cite_ref-ИК_2-21" class="reference"><a href="#cite_note-ИК-2"><span class="cite-bracket">[</span>2<span class="cite-bracket">]</span></a></sup></li> <li><a href="/wiki/%D0%9C%D0%B5%D0%B6%D0%B4%D1%83%D0%BD%D0%B0%D1%80%D0%BE%D0%B4%D0%BD%D0%B0_%D0%BC%D0%B8%D0%BD%D0%B5%D1%80%D0%B0%D0%BB%D0%BE%D0%B3%D0%B8%D1%87%D0%B5%D1%81%D0%BA%D0%B0_%D0%B0%D1%81%D0%BE%D1%86%D0%B8%D0%B0%D1%86%D0%B8%D1%8F" title="Международна минералогическа асоциация">IMA статус</a> – названието за вида отпада през 1998-<a href="/wiki/1999" title="1999">1999</a> година, като се препоръчва да се използва за цялата група богати на желязо слюди.<sup id="cite_ref-Mindat_6-5" class="reference"><a href="#cite_note-Mindat-6"><span class="cite-bracket">[</span>6<span class="cite-bracket">]</span></a></sup></li> <li>Свързани минерали – кварц, фелдшпат, мусковит, авгит, амфибол, ортоклаз, албит, <a href="/wiki/%D0%90%D0%BB%D0%BC%D0%B0%D0%BD%D0%B4%D0%B8%D0%BD" title="Алмандин">алмандин</a><sup id="cite_ref-Kingdom_7-1" class="reference"><a href="#cite_note-Kingdom-7"><span class="cite-bracket">[</span>7<span class="cite-bracket">]</span></a></sup></li> <li>Произход на името – 1847 година по името на френския физик Жан-Батист Био<sup id="cite_ref-ИК_2-22" class="reference"><a href="#cite_note-ИК-2"><span class="cite-bracket">[</span>2<span class="cite-bracket">]</span></a></sup></li> <li>Особености – топи се на пламъка на свещ<sup id="cite_ref-Самоцвет_10-9" class="reference"><a href="#cite_note-Самоцвет-10"><span class="cite-bracket">[</span>10<span class="cite-bracket">]</span></a></sup></li></ul> <div class="mw-heading mw-heading2"><h2 id="Находища"><span id=".D0.9D.D0.B0.D1.85.D0.BE.D0.B4.D0.B8.D1.89.D0.B0"></span>Находища</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=%D0%91%D0%B8%D0%BE%D1%82%D0%B8%D1%82&veaction=edit&section=9" title="Редактиране на раздел: Находища" class="mw-editsection-visualeditor"><span>редактиране</span></a><span class="mw-editsection-divider"> | </span><a href="/w/index.php?title=%D0%91%D0%B8%D0%BE%D1%82%D0%B8%D1%82&action=edit&section=9" title="Edit section's source code: Находища"><span>редактиране на кода</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>Биотитът се намира в изобилие в световен мащаб, но колекционерските екземпляри не са чести и идват от няколко пункта. Интересни и красиви образци се намират в пегматити в <a href="/wiki/%D0%A0%D1%83%D1%81%D0%B8%D1%8F" title="Русия">Русия</a>, Гренландия, <a href="/wiki/%D0%91%D1%80%D0%B0%D0%B7%D0%B8%D0%BB%D0%B8%D1%8F" title="Бразилия">Бразилия</a> и Скандинавия. В Скандинавия, главно в <a href="/wiki/%D0%9D%D0%BE%D1%80%D0%B2%D0%B5%D0%B3%D0%B8%D1%8F" title="Норвегия">Норвегия</a> се срещат биотити с огромни размери, чиято площ достига до 7 m<sup>2</sup>. Великолепни екземпляри на кристали се намират в <a href="/wiki/%D0%98%D1%82%D0%B0%D0%BB%D0%B8%D1%8F" title="Италия">Италия</a>, сред продуктите на изригвания на Везувий, както и в долината <a href="/w/index.php?title=%D0%92%D0%B0%D0%BB_%D0%B4%D0%B8_%D0%A4%D0%B0%D1%81%D0%B0&action=edit&redlink=1" class="new" title="Вал ди Фаса (страницата не съществува)">Вал ди Фаса</a>, провинция <a href="/wiki/%D0%A2%D1%80%D0%B5%D0%BD%D1%82%D0%BE" title="Тренто">Тренто</a>.<sup id="cite_ref-Самоцвет_10-10" class="reference"><a href="#cite_note-Самоцвет-10"><span class="cite-bracket">[</span>10<span class="cite-bracket">]</span></a></sup> Интерес представляват и кристалите от <a href="/wiki/%D0%93%D0%B5%D1%80%D0%BC%D0%B0%D0%BD%D0%B8%D1%8F" title="Германия">немската</a> планина <a href="/wiki/%D0%90%D0%B9%D1%84%D0%B5%D0%BB_(%D0%BF%D0%BB%D0%B0%D0%BD%D0%B8%D0%BD%D0%B0)" class="mw-redirect" title="Айфел (планина)">Айфел</a>, областта около град <a href="/wiki/%D0%9F%D0%BE%D1%80%D1%82%D0%BE" title="Порто">Порто</a> в Северозападна <a href="/wiki/%D0%9F%D0%BE%D1%80%D1%82%D1%83%D0%B3%D0%B0%D0%BB%D0%B8%D1%8F" title="Португалия">Португалия</a> и провинция <a href="/wiki/%D0%91%D0%B5%D0%BD%D0%B3%D0%BE_(%D0%BF%D1%80%D0%BE%D0%B2%D0%B8%D0%BD%D1%86%D0%B8%D1%8F)" title="Бенго (провинция)">Бенго</a> в <a href="/wiki/%D0%90%D0%BD%D0%B3%D0%BE%D0%BB%D0%B0" title="Ангола">Ангола</a>.<sup id="cite_ref-Kingdom_7-2" class="reference"><a href="#cite_note-Kingdom-7"><span class="cite-bracket">[</span>7<span class="cite-bracket">]</span></a></sup> </p> <div class="mw-heading mw-heading2"><h2 id="Употреба"><span id=".D0.A3.D0.BF.D0.BE.D1.82.D1.80.D0.B5.D0.B1.D0.B0"></span>Употреба</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=%D0%91%D0%B8%D0%BE%D1%82%D0%B8%D1%82&veaction=edit&section=10" title="Редактиране на раздел: Употреба" class="mw-editsection-visualeditor"><span>редактиране</span></a><span class="mw-editsection-divider"> | </span><a href="/w/index.php?title=%D0%91%D0%B8%D0%BE%D1%82%D0%B8%D1%82&action=edit&section=10" title="Edit section's source code: Употреба"><span>редактиране на кода</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>Няма широко <a href="/wiki/%D0%9F%D1%80%D0%BE%D0%BC%D0%B8%D1%88%D0%BB%D0%B5%D0%BD%D0%BE%D1%81%D1%82" title="Промишленост">промишлено</a> приложение, но има голямо научно значение, тъй като позволява да се съди за условията, при които са образувани различните скални породи, съдържащи биотит.<sup id="cite_ref-Самоцвет_10-11" class="reference"><a href="#cite_note-Самоцвет-10"><span class="cite-bracket">[</span>10<span class="cite-bracket">]</span></a></sup> Чрез <a href="/wiki/%D0%90%D1%80%D0%B3%D0%BE%D0%BD" title="Аргон">аргоновия</a> и <a href="/wiki/%D0%A1%D1%82%D1%80%D0%BE%D0%BD%D1%86%D0%B8%D0%B9" title="Стронций">стронциевия</a> методи се използва за определяне на абсолютната възраст на скалите.<sup id="cite_ref-ГЭ_4-3" class="reference"><a href="#cite_note-ГЭ-4"><span class="cite-bracket">[</span>4<span class="cite-bracket">]</span></a></sup> </p><p>Рядко се среща в колекции, тъй като е разпространен по целия свят. Все пак интерес за колекционерите представляват необичайно големите листове. Почистването на биотита става много трудно, защото лесно <a href="/wiki/%D0%90%D0%B1%D1%81%D0%BE%D1%80%D0%B1%D1%86%D0%B8%D1%8F" title="Абсорбция">абсорбира</a> вода и започва да се разпада. Най-добрият начин за почистването му, както и на останалите слюди, е със суха електрическа четка за зъби.<sup id="cite_ref-Kingdom_7-3" class="reference"><a href="#cite_note-Kingdom-7"><span class="cite-bracket">[</span>7<span class="cite-bracket">]</span></a></sup> </p><p>Биотитът се обогатява посредством <a href="/wiki/%D0%93%D1%80%D0%B0%D0%B2%D0%B8%D1%82%D0%B0%D1%86%D0%B8%D1%8F" title="Гравитация">гравитационни</a>, <a href="/wiki/%D0%9C%D0%B0%D0%B3%D0%BD%D0%B8%D1%82" title="Магнит">магнитни</a> или <a href="/wiki/%D0%A4%D0%BB%D0%BE%D1%82%D0%B0%D1%86%D0%B8%D1%8F" title="Флотация">флотационни</a> методи. Използва се в производството на смазочни материали, <a href="/wiki/%D0%91%D1%80%D0%BE%D0%BD%D0%B7" title="Бронз">бронзови</a> и топлоустойчиви оцветители, електроизолационни материали, декоративни <a href="/wiki/%D0%A6%D0%B8%D0%BC%D0%B5%D0%BD%D1%82" title="Цимент">цименти</a>, в оптическото приборостроене и други.<sup id="cite_ref-ГЭ_4-4" class="reference"><a href="#cite_note-ГЭ-4"><span class="cite-bracket">[</span>4<span class="cite-bracket">]</span></a></sup> </p> <div class="mw-heading mw-heading2"><h2 id="Източници"><span id=".D0.98.D0.B7.D1.82.D0.BE.D1.87.D0.BD.D0.B8.D1.86.D0.B8"></span>Източници</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=%D0%91%D0%B8%D0%BE%D1%82%D0%B8%D1%82&veaction=edit&section=11" title="Редактиране на раздел: Източници" class="mw-editsection-visualeditor"><span>редактиране</span></a><span class="mw-editsection-divider"> | </span><a href="/w/index.php?title=%D0%91%D0%B8%D0%BE%D1%82%D0%B8%D1%82&action=edit&section=11" title="Edit section's source code: Източници"><span>редактиране на кода</span></a><span class="mw-editsection-bracket">]</span></span></div> <div class="mw-references-wrap mw-references-columns"><ol class="references"> <li id="cite_note-1"><span class="mw-cite-backlink"><a href="#cite_ref-1">↑</a></span> <span class="reference-text"><cite id="CITEREFИнститут_за_български_език" class="book" style="font-style:normal"><a rel="nofollow" class="external text" href="https://ibl.bas.bg/rbe/lang/bg/биотит/">биотит</a> //  Речник на българския език (ibl.bas.bg).  Институт за български език. Посетен на 2 април 2024.</cite></span> </li> <li id="cite_note-ИК-2"><span class="mw-cite-backlink">↑ <a href="#cite_ref-ИК_2-0"><sup><i><b>а</b></i></sup></a> <a href="#cite_ref-ИК_2-1"><sup><i><b>б</b></i></sup></a> <a href="#cite_ref-ИК_2-2"><sup><i><b>в</b></i></sup></a> <a href="#cite_ref-ИК_2-3"><sup><i><b>г</b></i></sup></a> <a href="#cite_ref-ИК_2-4"><sup><i><b>д</b></i></sup></a> <a href="#cite_ref-ИК_2-5"><sup><i><b>е</b></i></sup></a> <a href="#cite_ref-ИК_2-6"><sup><i><b>ж</b></i></sup></a> <a href="#cite_ref-ИК_2-7"><sup><i><b>з</b></i></sup></a> <a href="#cite_ref-ИК_2-8"><sup><i><b>и</b></i></sup></a> <a href="#cite_ref-ИК_2-9"><sup><i><b>к</b></i></sup></a> <a href="#cite_ref-ИК_2-10"><sup><i><b>л</b></i></sup></a> <a href="#cite_ref-ИК_2-11"><sup><i><b>м</b></i></sup></a> <a href="#cite_ref-ИК_2-12"><sup><i><b>н</b></i></sup></a> <a href="#cite_ref-ИК_2-13"><sup><i><b>о</b></i></sup></a> <a href="#cite_ref-ИК_2-14"><sup><i><b>п</b></i></sup></a> <a href="#cite_ref-ИК_2-15"><sup><i><b>р</b></i></sup></a> <a href="#cite_ref-ИК_2-16"><sup><i><b>с</b></i></sup></a> <a href="#cite_ref-ИК_2-17"><sup><i><b>т</b></i></sup></a> <a href="#cite_ref-ИК_2-18"><sup><i><b>у</b></i></sup></a> <a href="#cite_ref-ИК_2-19"><sup><i><b>ф</b></i></sup></a> <a href="#cite_ref-ИК_2-20"><sup><i><b>х</b></i></sup></a> <a href="#cite_ref-ИК_2-21"><sup><i><b>ц</b></i></sup></a> <a href="#cite_ref-ИК_2-22"><sup><i><b>ч</b></i></sup></a></span> <span class="reference-text">Иван Костов - „Минералогия“/изд. „Техника“/София/1993/стр.423</span> </li> <li id="cite_note-МГП-3"><span class="mw-cite-backlink">↑ <a href="#cite_ref-МГП_3-0"><sup><i><b>а</b></i></sup></a> <a href="#cite_ref-МГП_3-1"><sup><i><b>б</b></i></sup></a> <a href="#cite_ref-МГП_3-2"><sup><i><b>в</b></i></sup></a> <a href="#cite_ref-МГП_3-3"><sup><i><b>г</b></i></sup></a></span> <span class="reference-text"><span style="color:blue; font-size:0.8em; cursor:help;" title="На руски език"><b>(</b>(ru)<b>)</b></span> <a rel="nofollow" class="external text" href="http://www.ecosystema.ru/08nature/min/1_6_12_4_4_5_2.htm">Минералы и горные породы России и СССР/Группа слюд/Биотит</a></span> </li> <li id="cite_note-ГЭ-4"><span class="mw-cite-backlink">↑ <a href="#cite_ref-ГЭ_4-0"><sup><i><b>а</b></i></sup></a> <a href="#cite_ref-ГЭ_4-1"><sup><i><b>б</b></i></sup></a> <a href="#cite_ref-ГЭ_4-2"><sup><i><b>в</b></i></sup></a> <a href="#cite_ref-ГЭ_4-3"><sup><i><b>г</b></i></sup></a> <a href="#cite_ref-ГЭ_4-4"><sup><i><b>д</b></i></sup></a></span> <span class="reference-text"><span style="color:blue; font-size:0.8em; cursor:help;" title="На руски език"><b>(</b>(ru)<b>)</b></span> <a rel="nofollow" class="external text" href="http://www.mining-enc.ru/b/biotit/">Горная энциклопедия/Биотит</a></span> </li> <li id="cite_note-Geolib-5"><span class="mw-cite-backlink">↑ <a href="#cite_ref-Geolib_5-0"><sup><i><b>а</b></i></sup></a> <a href="#cite_ref-Geolib_5-1"><sup><i><b>б</b></i></sup></a> <a href="#cite_ref-Geolib_5-2"><sup><i><b>в</b></i></sup></a> <a href="#cite_ref-Geolib_5-3"><sup><i><b>г</b></i></sup></a> <a href="#cite_ref-Geolib_5-4"><sup><i><b>д</b></i></sup></a> <a href="#cite_ref-Geolib_5-5"><sup><i><b>е</b></i></sup></a></span> <span class="reference-text"><span style="color:blue; font-size:0.8em; cursor:help;" title="На руски език"><b>(</b>(ru)<b>)</b></span> <a rel="nofollow" class="external text" href="http://www.geolib.net/mineralogy/biotit.html">Справочник по геологии Geolib/Биотит</a></span> </li> <li id="cite_note-Mindat-6"><span class="mw-cite-backlink">↑ <a href="#cite_ref-Mindat_6-0"><sup><i><b>а</b></i></sup></a> <a href="#cite_ref-Mindat_6-1"><sup><i><b>б</b></i></sup></a> <a href="#cite_ref-Mindat_6-2"><sup><i><b>в</b></i></sup></a> <a href="#cite_ref-Mindat_6-3"><sup><i><b>г</b></i></sup></a> <a href="#cite_ref-Mindat_6-4"><sup><i><b>д</b></i></sup></a> <a href="#cite_ref-Mindat_6-5"><sup><i><b>е</b></i></sup></a></span> <span class="reference-text"><span style="color:blue; font-size:0.8em; cursor:help;" title="На английски език"><b>(</b>(en)<b>)</b></span> <a rel="nofollow" class="external text" href="http://www.mindat.org/min-677.html">Biotite mineral information and data Mindat/Biotite</a></span> </li> <li id="cite_note-Kingdom-7"><span class="mw-cite-backlink">↑ <a href="#cite_ref-Kingdom_7-0"><sup><i><b>а</b></i></sup></a> <a href="#cite_ref-Kingdom_7-1"><sup><i><b>б</b></i></sup></a> <a href="#cite_ref-Kingdom_7-2"><sup><i><b>в</b></i></sup></a> <a href="#cite_ref-Kingdom_7-3"><sup><i><b>г</b></i></sup></a></span> <span class="reference-text"><span style="color:blue; font-size:0.8em; cursor:help;" title="На английски език"><b>(</b>(en)<b>)</b></span> <a rel="nofollow" class="external text" href="http://www.minerals.net/mineral/biotite.aspx">The Mineral & Gemstone Kingdom/The Biotite Mineral Group</a></span> </li> <li id="cite_note-Геол-8"><span class="mw-cite-backlink">↑ <a href="#cite_ref-Геол_8-0"><sup><i><b>а</b></i></sup></a> <a href="#cite_ref-Геол_8-1"><sup><i><b>б</b></i></sup></a> <a href="#cite_ref-Геол_8-2"><sup><i><b>в</b></i></sup></a> <a href="#cite_ref-Геол_8-3"><sup><i><b>г</b></i></sup></a> <a href="#cite_ref-Геол_8-4"><sup><i><b>д</b></i></sup></a> <a href="#cite_ref-Геол_8-5"><sup><i><b>е</b></i></sup></a> <a href="#cite_ref-Геол_8-6"><sup><i><b>ж</b></i></sup></a></span> <span class="reference-text"><span style="color:blue; font-size:0.8em; cursor:help;" title="На руски език"><b>(</b>(ru)<b>)</b></span> <a rel="nofollow" class="external text" href="http://dic.academic.ru/dic.nsf/enc_geolog/500/%D0%91%D0%B8%D0%BE%D1%82%D0%B8%D1%82">Геологическая энциклопедия/Биотит</a></span> </li> <li id="cite_note-СИС-9"><span class="mw-cite-backlink"><a href="#cite_ref-СИС_9-0">↑</a></span> <span class="reference-text"><span style="color:blue; font-size:0.8em; cursor:help;" title="На руски език"><b>(</b>(ru)<b>)</b></span> <a rel="nofollow" class="external text" href="http://dic.academic.ru/dic.nsf/dic_fwords/42443/%D0%9C%D0%95%D0%A0%D0%9E%D0%9A%D0%A1%D0%95%D0%9D">Словарь иностранных слов русского языка/Мероксен</a></span> </li> <li id="cite_note-Самоцвет-10"><span class="mw-cite-backlink">↑ <a href="#cite_ref-Самоцвет_10-0"><sup><i><b>а</b></i></sup></a> <a href="#cite_ref-Самоцвет_10-1"><sup><i><b>б</b></i></sup></a> <a href="#cite_ref-Самоцвет_10-2"><sup><i><b>в</b></i></sup></a> <a href="#cite_ref-Самоцвет_10-3"><sup><i><b>г</b></i></sup></a> <a href="#cite_ref-Самоцвет_10-4"><sup><i><b>д</b></i></sup></a> <a href="#cite_ref-Самоцвет_10-5"><sup><i><b>е</b></i></sup></a> <a href="#cite_ref-Самоцвет_10-6"><sup><i><b>ж</b></i></sup></a> <a href="#cite_ref-Самоцвет_10-7"><sup><i><b>з</b></i></sup></a> <a href="#cite_ref-Самоцвет_10-8"><sup><i><b>и</b></i></sup></a> <a href="#cite_ref-Самоцвет_10-9"><sup><i><b>к</b></i></sup></a> <a href="#cite_ref-Самоцвет_10-10"><sup><i><b>л</b></i></sup></a> <a href="#cite_ref-Самоцвет_10-11"><sup><i><b>м</b></i></sup></a></span> <span class="reference-text"><span style="color:blue; font-size:0.8em; cursor:help;" title="На руски език"><b>(</b>(ru)<b>)</b></span> <a rel="nofollow" class="external text" href="http://www.webois.org.ua/jewellery/stones-katalog/mineral-biotit.htm">Каталог минералов и самоцветов мира/Слюды (силикаты): Биотит</a></span> </li> <li id="cite_note-Database-11"><span class="mw-cite-backlink">↑ <a href="#cite_ref-Database_11-0"><sup><i><b>а</b></i></sup></a> <a href="#cite_ref-Database_11-1"><sup><i><b>б</b></i></sup></a> <a href="#cite_ref-Database_11-2"><sup><i><b>в</b></i></sup></a> <a href="#cite_ref-Database_11-3"><sup><i><b>г</b></i></sup></a></span> <span class="reference-text"><span style="color:blue; font-size:0.8em; cursor:help;" title="На английски език"><b>(</b>(en)<b>)</b></span> <a rel="nofollow" class="external text" href="http://webmineral.com/data/Biotite.shtml">Mineralogy Database/Biotite Mineral Data</a></span> </li> <li id="cite_note-Hand-12"><span class="mw-cite-backlink">↑ <a href="#cite_ref-Hand_12-0"><sup><i><b>а</b></i></sup></a> <a href="#cite_ref-Hand_12-1"><sup><i><b>б</b></i></sup></a> <a href="#cite_ref-Hand_12-2"><sup><i><b>в</b></i></sup></a> <a href="#cite_ref-Hand_12-3"><sup><i><b>г</b></i></sup></a> <a href="#cite_ref-Hand_12-4"><sup><i><b>д</b></i></sup></a> <a href="#cite_ref-Hand_12-5"><sup><i><b>е</b></i></sup></a> <a href="#cite_ref-Hand_12-6"><sup><i><b>ж</b></i></sup></a> <a href="#cite_ref-Hand_12-7"><sup><i><b>з</b></i></sup></a> <a href="#cite_ref-Hand_12-8"><sup><i><b>и</b></i></sup></a> <a href="#cite_ref-Hand_12-9"><sup><i><b>к</b></i></sup></a></span> <span class="reference-text"><span style="color:blue; font-size:0.8em; cursor:help;" title="На английски език"><b>(</b>(en)<b>)</b></span> <a rel="nofollow" class="external text" href="http://www.handbookofmineralogy.org/pdfs/biotite.pdf">Handbook of Mineralogy/Biotite</a></span> </li> <li id="cite_note-Smith-13"><span class="mw-cite-backlink">↑ <a href="#cite_ref-Smith_13-0"><sup><i><b>а</b></i></sup></a> <a href="#cite_ref-Smith_13-1"><sup><i><b>б</b></i></sup></a> <a href="#cite_ref-Smith_13-2"><sup><i><b>в</b></i></sup></a></span> <span class="reference-text"><span style="color:blue; font-size:0.8em; cursor:help;" title="На английски език"><b>(</b>(en)<b>)</b></span> <a rel="nofollow" class="external text" href="http://www.science.smith.edu/geosciences/petrology/Petrography/Biotite/Biotite.html">Smith College – Geology 222b – Petrology/Petrographic Data File/Biotite</a> <a rel="nofollow" class="external text" href="https://web.archive.org/web/20130510071953/http://www.science.smith.edu/geosciences/petrology/Petrography/Biotite/Biotite.html">Архив на оригинала от</a> 2013-05-10 в <a href="/wiki/Wayback_Machine" class="mw-redirect" title="Wayback Machine">Wayback Machine</a>.</span> </li> </ol></div> <div class="mw-heading mw-heading2"><h2 id="Литература"><span id=".D0.9B.D0.B8.D1.82.D0.B5.D1.80.D0.B0.D1.82.D1.83.D1.80.D0.B0"></span>Литература</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=%D0%91%D0%B8%D0%BE%D1%82%D0%B8%D1%82&veaction=edit&section=12" title="Редактиране на раздел: Литература" class="mw-editsection-visualeditor"><span>редактиране</span></a><span class="mw-editsection-divider"> | </span><a href="/w/index.php?title=%D0%91%D0%B8%D0%BE%D1%82%D0%B8%D1%82&action=edit&section=12" title="Edit section's source code: Литература"><span>редактиране на кода</span></a><span class="mw-editsection-bracket">]</span></span></div> <ul><li><cite id="CITEREF1882" class="book" style="font-style:normal"><a href="/wiki/%D0%93%D0%B5%D0%BE%D1%80%D0%B3%D0%B8_%D0%97%D0%BB%D0%B0%D1%82%D0%B0%D1%80%D1%81%D0%BA%D0%B8" title="Георги Златарски"> Златарски, Георги</a>. <a rel="nofollow" class="external text" href="https://archive.org/details/periodicheskosp02druzgoog">Материали по геологията и минералогията на България</a> //  <i>Периодическо списание на Българското книжовно дружество</i> (3).  1882. с. <a rel="nofollow" class="external text" href="https://books.google.bg/books?id=ilpEAQAAMAAJ&newbks=1&newbks_redir=0&dq=B%C5%ADlgarsko%20knizhovno%20druzhestvo&hl=bg&pg=RA3-PA104#v=onepage&q=B%C5%ADlgarsko%20knizhovno%20druzhestvo&f=false">104</a>. Посетен на 30 април 2024.</cite></li> <li><cite id="CITEREF1923" class="book" style="font-style:normal"><a href="/wiki/%D0%93%D0%B5%D0%BE%D1%80%D0%B3%D0%B8_%D0%91%D0%BE%D0%BD%D1%87%D0%B5%D0%B2" title="Георги Бончев">Бончев, Георги</a>. <a rel="nofollow" class="external text" href="http://unilib-dspace.nasledstvo.bg/xmlui/handle/nls/36065">Минералите в България</a> //  <i>Годишник на Софийския университет, Физико - математически факултет</i> 19 (1).  1923. с. <a rel="nofollow" class="external text" href="http://unilib-dspace.nasledstvo.bg/xmlui/handle/nls/36065">172</a>- 173. Посетен на 2 април 2024.</cite></li> <li><cite id="CITEREFИздателство_на_Българската_академия_на_науките1964" class="book" style="font-style:normal"><a href="/wiki/%D0%98%D0%B2%D0%B0%D0%BD_%D0%9A%D0%BE%D1%81%D1%82%D0%BE%D0%B2_(%D0%B3%D0%B5%D0%BE%D0%BB%D0%BE%D0%B3)" title="Иван Костов (геолог)">Костов, Иван</a>; <a href="/wiki/%D0%92%D0%B5%D1%81%D0%B5%D0%BB%D0%B8%D0%BD%D0%B0_%D0%91%D1%80%D0%B5%D1%81%D0%BA%D0%BE%D0%B2%D1%81%D0%BA%D0%B0" title="Веселина Бресковска">Бресковска, В.</a>; Минчева-Стефанова, Й.; Киров, Г. Н. <a rel="nofollow" class="external text" href="https://www.worldcat.org/title/mineralite-v-blgari/oclc/947184787&referer=brief_results">Минералите в България</a>.  София, Издателство на Българската академия на науките, 1964. OCLC <a rel="nofollow" class="external text" href="http://worldcat.org/oclc/947184787">947184787</a>. с. 311, 313-315.</cite></li> <li><cite id="CITEREFИздателство" class="book" style="font-style:normal"><a href="/wiki/%D0%98%D0%B2%D0%B0%D0%BD_%D0%9A%D0%BE%D1%81%D1%82%D0%BE%D0%B2_(%D0%B3%D0%B5%D0%BE%D0%BB%D0%BE%D0%B3)" title="Иван Костов (геолог)">Костов, Иван</a>. Минералогия. 3.  София, Издателство "Наука и изкуство", 1973. OCLC <a rel="nofollow" class="external text" href="http://worldcat.org/oclc/859838412">859838412</a>. с. 395-397.</cite></li> <li><cite id="CITEREF[[Издателство_на_БАН_„Проф._Марин_Дринов“]]2023" class="book" style="font-style:normal">Костов-Китин, Владислав. Оливинова група Olivine Group //  Енциклопедия: Минералите в България.  София, <a href="/wiki/%D0%98%D0%B7%D0%B4%D0%B0%D1%82%D0%B5%D0%BB%D1%81%D1%82%D0%B2%D0%BE_%D0%BD%D0%B0_%D0%91%D0%90%D0%9D_%E2%80%9E%D0%9F%D1%80%D0%BE%D1%84._%D0%9C%D0%B0%D1%80%D0%B8%D0%BD_%D0%94%D1%80%D0%B8%D0%BD%D0%BE%D0%B2%E2%80%9C" title="Издателство на БАН „Проф. Марин Дринов“">Издателство на БАН „Проф. Марин Дринов“</a>, 2023. <a href="/wiki/%D0%A1%D0%BF%D0%B5%D1%86%D0%B8%D0%B0%D0%BB%D0%BD%D0%B8:%D0%98%D0%B7%D1%82%D0%BE%D1%87%D0%BD%D0%B8%D1%86%D0%B8_%D0%BD%D0%B0_%D0%BA%D0%BD%D0%B8%D0%B3%D0%B8/9786192453657" class="internal mw-magiclink-isbn">ISBN 978-619-245-365-7</a>. с. 186 - 187.</cite></li></ul>    </div><noscript><img src="https://login.wikimedia.org/wiki/Special:CentralAutoLogin/start?useformat=desktop&type=1x1&usesul3=0" alt="" width="1" height="1" style="border: none; position: absolute;"></noscript> <div class="printfooter" data-nosnippet="">Взето от „<a dir="ltr" href="https://bg.wikipedia.org/w/index.php?title=Биотит&oldid=12220744">https://bg.wikipedia.org/w/index.php?title=Биотит&oldid=12220744</a>“.</div></div> <div id="catlinks" class="catlinks" data-mw="interface"><div id="mw-normal-catlinks" class="mw-normal-catlinks"><a href="/wiki/%D0%A1%D0%BF%D0%B5%D1%86%D0%B8%D0%B0%D0%BB%D0%BD%D0%B8:%D0%9A%D0%B0%D1%82%D0%B5%D0%B3%D0%BE%D1%80%D0%B8%D0%B8" title="Специални:Категории">Категория</a>: <ul><li><a href="/wiki/%D0%9A%D0%B0%D1%82%D0%B5%D0%B3%D0%BE%D1%80%D0%B8%D1%8F:%D0%A1%D0%BB%D1%8E%D0%B4%D0%B8" title="Категория:Слюди">Слюди</a></li></ul></div><div id="mw-hidden-catlinks" class="mw-hidden-catlinks mw-hidden-cats-hidden">Скрити категории: <ul><li><a href="/wiki/%D0%9A%D0%B0%D1%82%D0%B5%D0%B3%D0%BE%D1%80%D0%B8%D1%8F:%D0%A8%D0%B0%D0%B1%D0%BB%D0%BE%D0%BD_Webarchive_%D1%81_%D0%BF%D1%80%D0%B5%D0%BF%D1%80%D0%B0%D1%82%D0%BA%D0%B8_%D0%BA%D1%8A%D0%BC_Wayback_Machine" title="Категория:Шаблон Webarchive с препратки към Wayback Machine">Шаблон Webarchive с препратки към Wayback Machine</a></li><li><a href="/wiki/%D0%9A%D0%B0%D1%82%D0%B5%D0%B3%D0%BE%D1%80%D0%B8%D1%8F:%D0%A1%D1%82%D1%80%D0%B0%D0%BD%D0%B8%D1%86%D0%B8,_%D0%B8%D0%B7%D0%BF%D0%BE%D0%BB%D0%B7%D0%B2%D0%B0%D1%89%D0%B8_%D0%B2%D1%8A%D0%BB%D1%88%D0%B5%D0%B1%D0%BD%D0%B8_%D0%BF%D1%80%D0%B5%D0%BF%D1%80%D0%B0%D1%82%D0%BA%D0%B8_ISBN" title="Категория:Страници, използващи вълшебни препратки ISBN">Страници, използващи вълшебни препратки ISBN</a></li></ul></div></div> </div> </main> </div> <div class="mw-footer-container"> <footer id="footer" class="mw-footer" > <ul id="footer-info"> <li id="footer-info-lastmod"> Последната промяна на страницата е извършена на 1 май 2024 г. в 14:59 ч.</li> <li id="footer-info-copyright">Текстът е достъпен под лиценза <a rel="nofollow" class="external text" href="https://creativecommons.org/licenses/by-sa/4.0/deed.bg">Creative Commons Признание-Споделяне на споделеното</a>; може да са приложени допълнителни условия. 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