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[o]" accesskey="o" class=""><span>Logg inn</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="Fleire val" > <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="Personlege verktøy" > <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">Personlege verktøy</span> </label> <div class="vector-dropdown-content"> <div id="p-personal" class="vector-menu mw-portlet mw-portlet-personal user-links-collapsible-item" title="Brukarmeny" > <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=nn.wikipedia.org&uselang=nn"><span>Gåver</span></a></li><li id="pt-createaccount" class="user-links-collapsible-item mw-list-item"><a href="/w/index.php?title=Spesial:Opprett_konto&returnto=Plagioklas" title="Me oppfordrar til at du oppretter ein konto og loggar inn, men det er ikkje påkravd."><span class="vector-icon mw-ui-icon-userAdd mw-ui-icon-wikimedia-userAdd"></span> <span>Opprett konto</span></a></li><li id="pt-login" class="user-links-collapsible-item mw-list-item"><a href="/w/index.php?title=Spesial:Logg_inn&returnto=Plagioklas" title="Det er ikkje obligatorisk å logga inn, men medfører mange fordelar. [o]" accesskey="o"><span class="vector-icon mw-ui-icon-logIn mw-ui-icon-wikimedia-logIn"></span> <span>Logg inn</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"> Sider for utlogga bidragsytarar <a href="/wiki/Hjelp:Introduksjon" aria-label="Lær meir om redigering"><span>lær meir</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/Spesial:Bidraga_mine" title="Liste over endringar gjorde frå denne IP-adressa [y]" accesskey="y"><span>Bidrag</span></a></li><li id="pt-anontalk" class="mw-list-item"><a href="/wiki/Spesial:Diskusjonssida_mi" title="Diskusjon om endringar gjorde av denne ip-adressa [n]" accesskey="n"><span>Diskusjon</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="Nettstad"> <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="Innhald" 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">Innhald</h2> <button class="vector-pinnable-header-toggle-button vector-pinnable-header-pin-button" data-event-name="pinnable-header.vector-toc.pin">flytt til sidefeltet</button> <button class="vector-pinnable-header-toggle-button vector-pinnable-header-unpin-button" data-event-name="pinnable-header.vector-toc.unpin">gøym</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">Byrjinga</div> </a> </li> <li id="toc-Kjelder" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Kjelder"> <div class="vector-toc-text"> <span class="vector-toc-numb">1</span> <span>Kjelder</span> </div> </a> <ul id="toc-Kjelder-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Bakgrunnsstoff" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Bakgrunnsstoff"> <div class="vector-toc-text"> <span class="vector-toc-numb">2</span> <span>Bakgrunnsstoff</span> </div> </a> <ul id="toc-Bakgrunnsstoff-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="Innhald" class="vector-toc-landmark"> <div id="vector-page-titlebar-toc" class="vector-dropdown vector-page-titlebar-toc vector-button-flush-left" > <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="Vis/skjul innhaldslista" > <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">Vis/skjul innhaldslista</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">Plagioklas</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="Gå til ein artikkel på eit anna språk. Tilgjengeleg på 42 språk" > <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-42" 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">42 språk</span> </label> <div class="vector-dropdown-content"> <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li class="interlanguage-link interwiki-no mw-list-item"><a href="https://no.wikipedia.org/wiki/Plagioklas" title="Plagioklas – norsk bokmål" lang="nb" hreflang="nb" data-title="Plagioklas" data-language-autonym="Norsk bokmål" data-language-local-name="norsk bokmål" class="interlanguage-link-target"><span>Norsk bokmål</span></a></li><li class="interlanguage-link interwiki-sv mw-list-item"><a href="https://sv.wikipedia.org/wiki/Plagioklas" title="Plagioklas – svensk" lang="sv" hreflang="sv" data-title="Plagioklas" data-language-autonym="Svenska" data-language-local-name="svensk" class="interlanguage-link-target"><span>Svenska</span></a></li><li class="interlanguage-link interwiki-da mw-list-item"><a href="https://da.wikipedia.org/wiki/Plagioklas" title="Plagioklas – dansk" lang="da" hreflang="da" data-title="Plagioklas" data-language-autonym="Dansk" data-language-local-name="dansk" class="interlanguage-link-target"><span>Dansk</span></a></li><li class="interlanguage-link interwiki-ar mw-list-item"><a href="https://ar.wikipedia.org/wiki/%D8%A8%D9%84%D8%A7%D8%AC%D9%8A%D9%88%D9%83%D9%84%D8%A7%D8%B3" title="بلاجيوكلاس – arabisk" lang="ar" hreflang="ar" data-title="بلاجيوكلاس" data-language-autonym="العربية" data-language-local-name="arabisk" 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/Plaqioklazlar" title="Plaqioklazlar – aserbajdsjansk" lang="az" hreflang="az" data-title="Plaqioklazlar" data-language-autonym="Azərbaycanca" data-language-local-name="aserbajdsjansk" class="interlanguage-link-target"><span>Azərbaycanca</span></a></li><li class="interlanguage-link interwiki-ca mw-list-item"><a href="https://ca.wikipedia.org/wiki/Plagi%C3%B2clasi" title="Plagiòclasi – katalansk" lang="ca" hreflang="ca" data-title="Plagiòclasi" data-language-autonym="Català" data-language-local-name="katalansk" 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/Plagioklas" title="Plagioklas – tsjekkisk" lang="cs" hreflang="cs" data-title="Plagioklas" data-language-autonym="Čeština" data-language-local-name="tsjekkisk" class="interlanguage-link-target"><span>Čeština</span></a></li><li class="interlanguage-link interwiki-de badge-Q70894304 mw-list-item" title=""><a href="https://de.wikipedia.org/wiki/Plagioklas" title="Plagioklas – tysk" lang="de" hreflang="de" data-title="Plagioklas" data-language-autonym="Deutsch" data-language-local-name="tysk" class="interlanguage-link-target"><span>Deutsch</span></a></li><li class="interlanguage-link interwiki-et mw-list-item"><a href="https://et.wikipedia.org/wiki/Plagioklass" title="Plagioklass – estisk" lang="et" hreflang="et" data-title="Plagioklass" data-language-autonym="Eesti" data-language-local-name="estisk" class="interlanguage-link-target"><span>Eesti</span></a></li><li class="interlanguage-link interwiki-en mw-list-item"><a href="https://en.wikipedia.org/wiki/Plagioclase" title="Plagioclase – engelsk" lang="en" hreflang="en" data-title="Plagioclase" data-language-autonym="English" data-language-local-name="engelsk" 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/Plagioclasa" title="Plagioclasa – spansk" lang="es" hreflang="es" data-title="Plagioclasa" data-language-autonym="Español" data-language-local-name="spansk" class="interlanguage-link-target"><span>Español</span></a></li><li class="interlanguage-link interwiki-eo mw-list-item"><a href="https://eo.wikipedia.org/wiki/Plagioklazo" title="Plagioklazo – esperanto" lang="eo" hreflang="eo" data-title="Plagioklazo" data-language-autonym="Esperanto" data-language-local-name="esperanto" class="interlanguage-link-target"><span>Esperanto</span></a></li><li class="interlanguage-link interwiki-eu mw-list-item"><a href="https://eu.wikipedia.org/wiki/Plagioklasa" title="Plagioklasa – baskisk" lang="eu" hreflang="eu" data-title="Plagioklasa" data-language-autonym="Euskara" data-language-local-name="baskisk" class="interlanguage-link-target"><span>Euskara</span></a></li><li class="interlanguage-link interwiki-fa mw-list-item"><a href="https://fa.wikipedia.org/wiki/%D9%BE%D9%84%D8%A7%DA%98%DB%8C%D9%88%DA%A9%D9%84%D8%A7%D8%B2%D9%87%D8%A7" title="پلاژیوکلازها – persisk" lang="fa" hreflang="fa" data-title="پلاژیوکلازها" data-language-autonym="فارسی" data-language-local-name="persisk" class="interlanguage-link-target"><span>فارسی</span></a></li><li class="interlanguage-link interwiki-fr mw-list-item"><a href="https://fr.wikipedia.org/wiki/Plagioclase" title="Plagioclase – fransk" lang="fr" hreflang="fr" data-title="Plagioclase" data-language-autonym="Français" data-language-local-name="fransk" 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/Plaxioclasio" title="Plaxioclasio – galisisk" lang="gl" hreflang="gl" data-title="Plaxioclasio" data-language-autonym="Galego" data-language-local-name="galisisk" class="interlanguage-link-target"><span>Galego</span></a></li><li class="interlanguage-link interwiki-ko mw-list-item"><a href="https://ko.wikipedia.org/wiki/%EC%82%AC%EC%9E%A5%EC%84%9D" title="사장석 – koreansk" lang="ko" hreflang="ko" data-title="사장석" data-language-autonym="한국어" data-language-local-name="koreansk" class="interlanguage-link-target"><span>한국어</span></a></li><li class="interlanguage-link interwiki-hy mw-list-item"><a href="https://hy.wikipedia.org/wiki/%D5%8A%D5%AC%D5%A1%D5%A3%D5%AB%D5%B8%D5%AF%D5%AC%D5%A1%D5%A6%D5%B6%D5%A5%D6%80" title="Պլագիոկլազներ – armensk" lang="hy" hreflang="hy" data-title="Պլագիոկլազներ" data-language-autonym="Հայերեն" data-language-local-name="armensk" 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/Plagioklase" title="Plagioklase – indonesisk" lang="id" hreflang="id" data-title="Plagioklase" data-language-autonym="Bahasa Indonesia" data-language-local-name="indonesisk" class="interlanguage-link-target"><span>Bahasa Indonesia</span></a></li><li class="interlanguage-link interwiki-is mw-list-item"><a href="https://is.wikipedia.org/wiki/Plag%C3%AD%C3%B3klas" title="Plagíóklas – islandsk" lang="is" hreflang="is" data-title="Plagíóklas" data-language-autonym="Íslenska" data-language-local-name="islandsk" class="interlanguage-link-target"><span>Íslenska</span></a></li><li class="interlanguage-link interwiki-it mw-list-item"><a href="https://it.wikipedia.org/wiki/Plagioclasio" title="Plagioclasio – italiensk" lang="it" hreflang="it" data-title="Plagioclasio" data-language-autonym="Italiano" data-language-local-name="italiensk" class="interlanguage-link-target"><span>Italiano</span></a></li><li class="interlanguage-link interwiki-he mw-list-item"><a href="https://he.wikipedia.org/wiki/%D7%A4%D7%9C%D7%92%D7%99%D7%95%D7%A7%D7%9C%D7%96" title="פלגיוקלז – hebraisk" lang="he" hreflang="he" data-title="פלגיוקלז" data-language-autonym="עברית" data-language-local-name="hebraisk" class="interlanguage-link-target"><span>עברית</span></a></li><li class="interlanguage-link interwiki-ka mw-list-item"><a href="https://ka.wikipedia.org/wiki/%E1%83%9E%E1%83%9A%E1%83%90%E1%83%92%E1%83%98%E1%83%9D%E1%83%99%E1%83%9A%E1%83%90%E1%83%96%E1%83%94%E1%83%91%E1%83%98" title="პლაგიოკლაზები – georgisk" lang="ka" hreflang="ka" data-title="პლაგიოკლაზები" data-language-autonym="ქართული" data-language-local-name="georgisk" class="interlanguage-link-target"><span>ქართული</span></a></li><li class="interlanguage-link interwiki-ky mw-list-item"><a href="https://ky.wikipedia.org/wiki/%D0%9F%D0%BB%D0%B0%D0%B3%D0%B8%D0%BE%D0%BA%D0%BB%D0%B0%D0%B7%D0%B4%D0%B0%D1%80" title="Плагиоклаздар – kirgisisk" lang="ky" hreflang="ky" data-title="Плагиоклаздар" data-language-autonym="Кыргызча" data-language-local-name="kirgisisk" 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/Plagioklazas" title="Plagioklazas – litauisk" lang="lt" hreflang="lt" data-title="Plagioklazas" data-language-autonym="Lietuvių" data-language-local-name="litauisk" class="interlanguage-link-target"><span>Lietuvių</span></a></li><li class="interlanguage-link interwiki-hu mw-list-item"><a href="https://hu.wikipedia.org/wiki/Plagiokl%C3%A1szok" title="Plagioklászok – ungarsk" lang="hu" hreflang="hu" data-title="Plagioklászok" data-language-autonym="Magyar" data-language-local-name="ungarsk" class="interlanguage-link-target"><span>Magyar</span></a></li><li class="interlanguage-link interwiki-mr mw-list-item"><a href="https://mr.wikipedia.org/wiki/%E0%A4%AA%E0%A5%8D%E0%A4%B2%E0%A5%85%E0%A4%9C%E0%A4%BF%E0%A4%93%E0%A4%95%E0%A5%8D%E0%A4%B2%E0%A5%87%E0%A4%B8" title="प्लॅजिओक्लेस – marathi" lang="mr" hreflang="mr" data-title="प्लॅजिओक्लेस" data-language-autonym="मराठी" data-language-local-name="marathi" class="interlanguage-link-target"><span>मराठी</span></a></li><li class="interlanguage-link interwiki-nl mw-list-item"><a href="https://nl.wikipedia.org/wiki/Plagioklaas" title="Plagioklaas – nederlandsk" lang="nl" hreflang="nl" data-title="Plagioklaas" data-language-autonym="Nederlands" data-language-local-name="nederlandsk" class="interlanguage-link-target"><span>Nederlands</span></a></li><li class="interlanguage-link interwiki-ja mw-list-item"><a href="https://ja.wikipedia.org/wiki/%E6%96%9C%E9%95%B7%E7%9F%B3" title="斜長石 – japansk" lang="ja" hreflang="ja" data-title="斜長石" data-language-autonym="日本語" data-language-local-name="japansk" class="interlanguage-link-target"><span>日本語</span></a></li><li class="interlanguage-link interwiki-uz mw-list-item"><a href="https://uz.wikipedia.org/wiki/Plagioklazlar" title="Plagioklazlar – usbekisk" lang="uz" hreflang="uz" data-title="Plagioklazlar" data-language-autonym="Oʻzbekcha / ўзбекча" data-language-local-name="usbekisk" class="interlanguage-link-target"><span>Oʻzbekcha / ўзбекча</span></a></li><li class="interlanguage-link interwiki-pl mw-list-item"><a href="https://pl.wikipedia.org/wiki/Plagioklazy" title="Plagioklazy – polsk" lang="pl" hreflang="pl" data-title="Plagioklazy" data-language-autonym="Polski" data-language-local-name="polsk" 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/Plagioclase" title="Plagioclase – portugisisk" lang="pt" hreflang="pt" data-title="Plagioclase" data-language-autonym="Português" data-language-local-name="portugisisk" class="interlanguage-link-target"><span>Português</span></a></li><li class="interlanguage-link interwiki-ru mw-list-item"><a href="https://ru.wikipedia.org/wiki/%D0%9F%D0%BB%D0%B0%D0%B3%D0%B8%D0%BE%D0%BA%D0%BB%D0%B0%D0%B7%D1%8B" title="Плагиоклазы – russisk" lang="ru" hreflang="ru" data-title="Плагиоклазы" data-language-autonym="Русский" data-language-local-name="russisk" class="interlanguage-link-target"><span>Русский</span></a></li><li class="interlanguage-link interwiki-sk mw-list-item"><a href="https://sk.wikipedia.org/wiki/Plagioklas" title="Plagioklas – slovakisk" lang="sk" hreflang="sk" data-title="Plagioklas" data-language-autonym="Slovenčina" data-language-local-name="slovakisk" 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/Plagioklaz" title="Plagioklaz – slovensk" lang="sl" hreflang="sl" data-title="Plagioklaz" data-language-autonym="Slovenščina" data-language-local-name="slovensk" 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%9F%D0%BB%D0%B0%D0%B3%D0%B8%D0%BE%D0%BA%D0%BB%D0%B0%D1%81" title="Плагиоклас – serbisk" lang="sr" hreflang="sr" data-title="Плагиоклас" data-language-autonym="Српски / srpski" data-language-local-name="serbisk" class="interlanguage-link-target"><span>Српски / srpski</span></a></li><li class="interlanguage-link interwiki-sh mw-list-item"><a href="https://sh.wikipedia.org/wiki/Plagioklas" title="Plagioklas – serbokroatisk" lang="sh" hreflang="sh" data-title="Plagioklas" data-language-autonym="Srpskohrvatski / српскохрватски" data-language-local-name="serbokroatisk" class="interlanguage-link-target"><span>Srpskohrvatski / српскохрватски</span></a></li><li class="interlanguage-link interwiki-fi mw-list-item"><a href="https://fi.wikipedia.org/wiki/Plagioklaasi" title="Plagioklaasi – finsk" lang="fi" hreflang="fi" data-title="Plagioklaasi" data-language-autonym="Suomi" data-language-local-name="finsk" class="interlanguage-link-target"><span>Suomi</span></a></li><li class="interlanguage-link interwiki-uk mw-list-item"><a href="https://uk.wikipedia.org/wiki/%D0%9F%D0%BB%D0%B0%D0%B3%D1%96%D0%BE%D0%BA%D0%BB%D0%B0%D0%B7" title="Плагіоклаз – ukrainsk" lang="uk" hreflang="uk" data-title="Плагіоклаз" 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det frie oppslagsverket</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="nn" dir="ltr"><table class="infobox" cellspacing="5" style="width: 22em; text-align: left; font-size: 88%; line-height: 1.5em;"> <tbody><tr><td colspan="2" class="" style="text-align:center; font-size: 125%; font-weight: bold; color: white; background-color: #7da7d9">Plagioklas</td></tr><tr><td colspan="2" style="text-align:center;"> <span class="mw-default-size" typeof="mw:File/Frameless"><a href="/wiki/Fil:Plagioklas1.jpg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/b/b3/Plagioklas1.jpg/220px-Plagioklas1.jpg" decoding="async" width="220" height="180" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/b/b3/Plagioklas1.jpg/330px-Plagioklas1.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/b/b3/Plagioklas1.jpg/440px-Plagioklas1.jpg 2x" data-file-width="2560" data-file-height="2096" /></a></span><br /> Eit fotomikrograf av eit plagioklas krystall under krysspolariset lys. Plagioklaskrystallet syner ein tydeleg banda effekt kalla ein polysyntetisk tvilling.</td></tr><tr class="bilde" valign="top"><td colspan="4" align="center" style="text-align:center;"></td></tr><tr><th colspan="2" style="text-align:center; color: white; background-color: #7da7d9">Generelt</th></tr><tr><th style="">Kategori</th><td class="" style=""><a href="/wiki/Feltspat" title="Feltspat">Feltspat</a> mineral group, <a href="/w/index.php?title=Tectosilikat&action=edit&redlink=1" class="new" title="Tectosilikat (sida finst ikkje)">tectosilikat</a></td></tr><tr><th style=""><a href="/wiki/Kjemisk_formel" title="Kjemisk formel">Kjemisk formel</a></th><td class="" style="">NaAlSi<sub>3</sub>O<sub>8</sub> – CaAl<sub>2</sub>Si<sub>2</sub>O<sub>8</sub></td></tr><tr><th style=""><a href="/wiki/Hermann%E2%80%93Mauguin_notasjon" title="Hermann–Mauguin notasjon">Krystallsymmetri</a></th><td class="" style="">Triklinsk pinakoidal<br /><a href="/w/index.php?title=H-M-symbol&action=edit&redlink=1" class="new" title="H-M-symbol (sida finst ikkje)">H-M-symbol</a>: (<span style="text-decoration:overline;">1</span>) <br /><a href="/w/index.php?title=Romgruppe&action=edit&redlink=1" class="new" title="Romgruppe (sida finst ikkje)">Romgruppe</a>: C<span style="text-decoration:overline;">1</span></td></tr><tr><th colspan="2" style="text-align:center; color: white; background-color: #7da7d9">Identifikasjon</th></tr><tr><th style="">Farge</th><td class="" style="">Kvit, grå, blåkvit, raudaktig kvit, grønaktig kvit</td></tr><tr><th style=""><a href="/wiki/Krystallform" title="Krystallform">Krystallform</a></th><td class="" style="">Massiv til korna</td></tr><tr><th style=""><a href="/wiki/Krystallsystem" title="Krystallsystem">Krystallsystem</a></th><td class="" style=""><a href="/w/index.php?title=Triklinsk&action=edit&redlink=1" class="new" title="Triklinsk (sida finst ikkje)">Triklinsk</a></td></tr><tr><th style=""><a href="/wiki/Krystalltvilling" class="mw-redirect" title="Krystalltvilling">Tvilling</a></th><td class="" style="">Vanleg, albitt-lov striper på {001}<sup id="cite_ref-Klein_1-0" class="reference"><a href="#cite_note-Klein-1"><span class="cite-bracket">[</span>1<span class="cite-bracket">]</span></a></sup></td></tr><tr><th style=""><a href="/wiki/Kl%C3%B8yv_i_mineralogi" class="mw-redirect" title="Kløyv i mineralogi">Kløyv</a></th><td class="" style="">god på {001} og {010}</td></tr><tr><th style="">Fastleik</th><td class="" style="">Sprø</td></tr><tr><th style=""><a href="/wiki/Mohs_hardleiksskala" title="Mohs hardleiksskala">Mohs hardleiksskala</a></th><td class="" style="">6 - 6.5</td></tr><tr><th style=""><a href="/wiki/Glans_i_mineralogi" title="Glans i mineralogi">Glans</a></th><td class="" style="">glasaktig</td></tr><tr><th style=""><a href="/wiki/Strekfarge" title="Strekfarge">Strekfarge</a></th><td class="" style="">Kvit</td></tr><tr><th style="">Transparens</th><td class="" style="">Gjennomsiktig til gjennomskineleg</td></tr><tr><th style=""><a href="/wiki/Spesifikk_vekt" title="Spesifikk vekt">Spesifikk vekt</a></th><td class="" style="">2.62 (albitt) til 2.76 (anortitt)<sup id="cite_ref-Klein_1-3" class="reference"><a href="#cite_note-Klein-1"><span class="cite-bracket">[</span>1<span class="cite-bracket">]</span></a></sup></td></tr><tr><th colspan="2" style="text-align:center; color: white; background-color: #7da7d9">Optiske eigenskapar</th></tr><tr><th style="">Optiske eigenskapar</th><td class="" style="">Toaksa (+) albitt, Toaksa (-) anortitt<sup id="cite_ref-Klein_1-1" class="reference"><a href="#cite_note-Klein-1"><span class="cite-bracket">[</span>1<span class="cite-bracket">]</span></a></sup></td></tr><tr><th style=""><a href="/wiki/Brytingsindeks" title="Brytingsindeks">Brytingsindeks</a></th><td class="" style="">Albitt: n<sub>α</sub> 1.527, n<sub>β</sub> 1.532 n<sub>γ</sub> 1.538<br />Anortitt: n<sub>α</sub> 1.577 n<sub>β</sub> 1.585 n<sub>γ</sub> 1.590<sup id="cite_ref-Klein_1-2" class="reference"><a href="#cite_note-Klein-1"><span class="cite-bracket">[</span>1<span class="cite-bracket">]</span></a></sup></td></tr><tr><th style=""><a href="/w/index.php?title=Oppl%C3%B8yselegheit&action=edit&redlink=1" class="new" title="Oppløyselegheit (sida finst ikkje)">Oppløyselegheit</a></th><td class="" style="">Albitt uoppløyseleg i <a href="/wiki/Saltsyre" title="Saltsyre">saltsyre</a>, anortitt bryt ned i saltsyre <sup id="cite_ref-Klein_1-4" class="reference"><a href="#cite_note-Klein-1"><span class="cite-bracket">[</span>1<span class="cite-bracket">]</span></a></sup></td></tr><tr><th style="">Kjelder</th><td class="" style=""><sup id="cite_ref-Webmin_2-0" class="reference"><a href="#cite_note-Webmin-2"><span class="cite-bracket">[</span>2<span class="cite-bracket">]</span></a></sup></td></tr> </tbody></table> <p><b>Plagioklas</b> er ei fellesnemning for blandingsrekka mellom <a href="/wiki/Albitt" title="Albitt">albitt</a> og <a href="/wiki/Anortitt" title="Anortitt">anortitt</a> (kalknatronfeltspat), og er ei triklin feltspat-gruppe som utgjer ein viktig bestanddel av ei rekkje bergartar. Bergarten <a href="/wiki/Anortositt" title="Anortositt">anortositt</a> består nesten utelukkande (<90%) av anortitt-rik feltspat. </p><p>Plagioklasar kan som oftast skiljast frå alkalifeltspat ved ei karakteristisk tvillingstriping på spalteflatene. Dei utgjer ein blandkrystallserie mellom dei to endeledda albitt (natronfeltspat), NaAlSi3O8) og anortitt (kalkfeltspat, CaAl2Si2O8). Serien vart tidlegare delt inn etter innhaldet av albitt/anortitt i seks ledd: albitt, <a href="/wiki/Oligoklas" title="Oligoklas">oligoklas</a>, <a href="/wiki/Andesin" title="Andesin">andesin</a>, <a href="/wiki/Labradoritt" title="Labradoritt">labradoritt</a>, <a href="/wiki/Bytownitt" title="Bytownitt">bytownitt</a> og anortitt. Ved høg temperatur er det er det fullt mogeleg å blande mellom dei to endeledda, men ved lågare temperatur kan det skje ei avblanding i to fasar. </p><p><a href="/wiki/Kalsium" title="Kalsium">Kalsiumrik</a> plagioklas vert kalla basisk plagioklas. </p> <div class="mw-heading mw-heading2"><h2 id="Kjelder">Kjelder</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Plagioklas&veaction=edit&section=1" title="Endre bolk: Kjelder" class="mw-editsection-visualeditor"><span>endre</span></a><span class="mw-editsection-divider"> | </span><a href="/w/index.php?title=Plagioklas&action=edit&section=1" title="Rediger kildekoden til seksjonen Kjelder"><span>endre wikiteksten</span></a><span class="mw-editsection-bracket">]</span></span></div> <p><a rel="nofollow" class="external text" href="https://snl.no/plagioklas">«plagioklas»</a> i <i><a href="/wiki/Store_norske_leksikon" title="Store norske leksikon">Store norske leksikon</a></i>, snl.no. </p> <div class="mw-heading mw-heading2"><h2 id="Bakgrunnsstoff">Bakgrunnsstoff</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Plagioklas&veaction=edit&section=2" title="Endre bolk: Bakgrunnsstoff" class="mw-editsection-visualeditor"><span>endre</span></a><span class="mw-editsection-divider"> | </span><a href="/w/index.php?title=Plagioklas&action=edit&section=2" title="Rediger kildekoden til seksjonen Bakgrunnsstoff"><span>endre wikiteksten</span></a><span class="mw-editsection-bracket">]</span></span></div> <ol class="references"> <li id="cite_note-Klein-1"><span class="mw-cite-backlink">↑ <sup><a href="#cite_ref-Klein_1-0">1,0</a></sup> <sup><a href="#cite_ref-Klein_1-1">1,1</a></sup> <sup><a href="#cite_ref-Klein_1-2">1,2</a></sup> <sup><a href="#cite_ref-Klein_1-3">1,3</a></sup> <sup><a href="#cite_ref-Klein_1-4">1,4</a></sup></span> <span class="reference-text">Klein, Cornelis and Cornelius S. Hurbut, Jr.; <i>Manual of Mineralogi,</i> Wiley, 20th ed., 1980, pp.454-456 <a href="/wiki/Spesial:Bokkjelder/0471805807" class="internal mw-magiclink-isbn">ISBN 0-471-80580-7</a> </span> </li> <li id="cite_note-Webmin-2"><span class="mw-cite-backlink"><a href="#cite_ref-Webmin_2-0">↑</a></span> <span class="reference-text"><a rel="nofollow" class="external text" href="http://webmineral.com/data/Plagioklas.shtml">Webmineral data</a> </span> </li> </ol>    </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="">Henta frå «<a dir="ltr" href="https://nn.wikipedia.org/w/index.php?title=Plagioklas&oldid=2866460">https://nn.wikipedia.org/w/index.php?title=Plagioklas&oldid=2866460</a>»</div></div> <div id="catlinks" class="catlinks" data-mw="interface"><div id="mw-normal-catlinks" class="mw-normal-catlinks"><a href="/wiki/Kategori:Kategoriar" title="Kategori:Kategoriar">Kategoriar</a>: <ul><li><a href="/wiki/Kategori:Natriummineral" title="Kategori:Natriummineral">Natriummineral</a></li><li><a href="/wiki/Kategori:Aluminiummineral" title="Kategori:Aluminiummineral">Aluminiummineral</a></li><li><a href="/wiki/Kategori:Kalsiummineral" title="Kategori:Kalsiummineral">Kalsiummineral</a></li><li><a href="/wiki/Kategori:Tektosilikat" title="Kategori:Tektosilikat">Tektosilikat</a></li><li><a href="/wiki/Kategori:Feltspat" title="Kategori:Feltspat">Feltspat</a></li><li><a href="/wiki/Kategori:Triklinske_mineral" title="Kategori:Triklinske mineral">Triklinske mineral</a></li></ul></div><div id="mw-hidden-catlinks" class="mw-hidden-catlinks mw-hidden-cats-hidden">Gøymd kategori: <ul><li><a href="/wiki/Kategori:Sider_som_nyttar_magiske_ISBN-lenkjer" title="Kategori:Sider som nyttar magiske ISBN-lenkjer">Sider som nyttar magiske ISBN-lenkjer</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"> Denne sida vart sist endra den 26. mars 2016 kl. 10:28.</li> <li id="footer-info-copyright">All tekst er tilgjengeleg under <a rel="nofollow" class="external text" href="http://creativecommons.org/licenses/by-sa/4.0/deed.no">Creative Commons-lisensen Namngjeving/Del på same vilkåra</a>. 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