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class="vector-dropdown-checkbox " aria-label="Alternar o índice" > <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">Alternar o índice</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">Pleocroísmo</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="Ir para um artigo noutra língua. Disponível em 38 línguas" > <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-38" 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">38 línguas</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/Pleochro%C3%AFsme" title="Pleochroïsme — africanês" lang="af" hreflang="af" data-title="Pleochroïsme" data-language-autonym="Afrikaans" data-language-local-name="africanês" 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%AA%D8%BA%D9%8A%D8%B1_%D9%84%D9%88%D9%86%D9%8A" title="تغير لوني — árabe" lang="ar" hreflang="ar" data-title="تغير لوني" data-language-autonym="العربية" data-language-local-name="árabe" class="interlanguage-link-target"><span>العربية</span></a></li><li class="interlanguage-link interwiki-bg mw-list-item"><a href="https://bg.wikipedia.org/wiki/%D0%9F%D0%BB%D0%B5%D0%BE%D1%85%D1%80%D0%BE%D0%B8%D0%B7%D1%8A%D0%BC" title="Плеохроизъм — búlgaro" lang="bg" hreflang="bg" data-title="Плеохроизъм" data-language-autonym="Български" data-language-local-name="búlgaro" class="interlanguage-link-target"><span>Български</span></a></li><li class="interlanguage-link interwiki-ca mw-list-item"><a href="https://ca.wikipedia.org/wiki/Pleocroisme" title="Pleocroisme — catalão" lang="ca" hreflang="ca" data-title="Pleocroisme" data-language-autonym="Català" data-language-local-name="catalão" class="interlanguage-link-target"><span>Català</span></a></li><li class="interlanguage-link interwiki-de badge-Q70894304 mw-list-item" title=""><a href="https://de.wikipedia.org/wiki/Pleochroismus" title="Pleochroismus — alemão" lang="de" hreflang="de" data-title="Pleochroismus" data-language-autonym="Deutsch" data-language-local-name="alemão" 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%A0%CE%BB%CE%B5%CE%BF%CF%87%CF%81%CF%89%CE%B9%CF%83%CE%BC%CF%8C%CF%82" title="Πλεοχρωισμός — grego" lang="el" hreflang="el" data-title="Πλεοχρωισμός" data-language-autonym="Ελληνικά" data-language-local-name="grego" 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/Pleochroism" title="Pleochroism — inglês" lang="en" hreflang="en" data-title="Pleochroism" data-language-autonym="English" data-language-local-name="inglês" 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/Pleocro%C3%ADsmo" title="Pleocroísmo — espanhol" lang="es" hreflang="es" data-title="Pleocroísmo" data-language-autonym="Español" data-language-local-name="espanhol" 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/Pleokroism" title="Pleokroism — estónio" lang="et" hreflang="et" data-title="Pleokroism" data-language-autonym="Eesti" data-language-local-name="estónio" class="interlanguage-link-target"><span>Eesti</span></a></li><li class="interlanguage-link interwiki-eu mw-list-item"><a href="https://eu.wikipedia.org/wiki/Pleokroismo" title="Pleokroismo — basco" lang="eu" hreflang="eu" data-title="Pleokroismo" data-language-autonym="Euskara" data-language-local-name="basco" 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/%DA%86%D9%86%D8%AF%D8%B1%D9%86%DA%AF%E2%80%8C%D9%86%D9%85%D8%A7%DB%8C%DB%8C" title="چندرنگ‌نمایی — persa" lang="fa" hreflang="fa" data-title="چندرنگ‌نمایی" data-language-autonym="فارسی" data-language-local-name="persa" 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/Pl%C3%A9ochro%C3%AFsme" title="Pléochroïsme — francês" lang="fr" hreflang="fr" data-title="Pléochroïsme" data-language-autonym="Français" data-language-local-name="francês" class="interlanguage-link-target"><span>Français</span></a></li><li class="interlanguage-link interwiki-he mw-list-item"><a href="https://he.wikipedia.org/wiki/%D7%A4%D7%9C%D7%90%D7%95%D7%9B%D7%A8%D7%95%D7%90%D7%99%D7%96%D7%9D" title="פלאוכרואיזם — hebraico" lang="he" hreflang="he" data-title="פלאוכרואיזם" data-language-autonym="עברית" data-language-local-name="hebraico" class="interlanguage-link-target"><span>עברית</span></a></li><li class="interlanguage-link interwiki-hr mw-list-item"><a href="https://hr.wikipedia.org/wiki/Pleokroizam" title="Pleokroizam — croata" lang="hr" hreflang="hr" data-title="Pleokroizam" data-language-autonym="Hrvatski" data-language-local-name="croata" class="interlanguage-link-target"><span>Hrvatski</span></a></li><li class="interlanguage-link interwiki-hu mw-list-item"><a href="https://hu.wikipedia.org/wiki/Pleokroizmus" title="Pleokroizmus — húngaro" lang="hu" hreflang="hu" data-title="Pleokroizmus" data-language-autonym="Magyar" data-language-local-name="húngaro" 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/%D5%8A%D5%AC%D5%A5%D5%B8%D6%84%D6%80%D5%B8%D5%AB%D5%A6%D5%B4" title="Պլեոքրոիզմ — arménio" lang="hy" hreflang="hy" data-title="Պլեոքրոիզմ" data-language-autonym="Հայերեն" data-language-local-name="arménio" 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/Pleokroisme" title="Pleokroisme — indonésio" lang="id" hreflang="id" data-title="Pleokroisme" data-language-autonym="Bahasa Indonesia" data-language-local-name="indonésio" 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/Pleocroismo" title="Pleocroismo — italiano" lang="it" hreflang="it" data-title="Pleocroismo" data-language-autonym="Italiano" data-language-local-name="italiano" 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/%E5%A4%9A%E8%89%B2%E6%80%A7" title="多色性 — japonês" lang="ja" hreflang="ja" data-title="多色性" data-language-autonym="日本語" data-language-local-name="japonês" class="interlanguage-link-target"><span>日本語</span></a></li><li class="interlanguage-link interwiki-kk mw-list-item"><a href="https://kk.wikipedia.org/wiki/%D0%9F%D0%BB%D0%B5%D0%BE%D1%85%D1%80%D0%BE%D0%B8%D0%B7%D0%BC" title="Плеохроизм — cazaque" lang="kk" hreflang="kk" data-title="Плеохроизм" data-language-autonym="Қазақша" data-language-local-name="cazaque" 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/%EB%8B%A4%EC%83%89%EC%84%B1" title="다색성 — coreano" lang="ko" hreflang="ko" data-title="다색성" data-language-autonym="한국어" data-language-local-name="coreano" 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%9F%D0%BB%D0%B5%D0%BE%D1%85%D1%80%D0%BE%D0%B8%D0%B7%D0%BC" title="Плеохроизм — quirguiz" lang="ky" hreflang="ky" data-title="Плеохроизм" data-language-autonym="Кыргызча" data-language-local-name="quirguiz" class="interlanguage-link-target"><span>Кыргызча</span></a></li><li class="interlanguage-link interwiki-lv mw-list-item"><a href="https://lv.wikipedia.org/wiki/Pleohroisms" title="Pleohroisms — letão" lang="lv" hreflang="lv" data-title="Pleohroisms" data-language-autonym="Latviešu" data-language-local-name="letão" class="interlanguage-link-target"><span>Latviešu</span></a></li><li class="interlanguage-link interwiki-ml mw-list-item"><a href="https://ml.wikipedia.org/wiki/%E0%B4%9F%E0%B5%8D%E0%B4%B0%E0%B5%88%E0%B4%95%E0%B5%8D%E0%B4%95%E0%B5%8D%E0%B4%B0%E0%B5%8B%E0%B4%AF%E0%B4%BF%E0%B4%B8%E0%B4%82" title="ട്രൈക്ക്രോയിസം — malaiala" lang="ml" hreflang="ml" data-title="ട്രൈക്ക്രോയിസം" data-language-autonym="മലയാളം" data-language-local-name="malaiala" class="interlanguage-link-target"><span>മലയാളം</span></a></li><li class="interlanguage-link interwiki-nds mw-list-item"><a href="https://nds.wikipedia.org/wiki/Pleochroismus" title="Pleochroismus — baixo-alemão" lang="nds" hreflang="nds" data-title="Pleochroismus" data-language-autonym="Plattdüütsch" data-language-local-name="baixo-alemão" 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/Pleochro%C3%AFsme" title="Pleochroïsme — neerlandês" lang="nl" hreflang="nl" data-title="Pleochroïsme" data-language-autonym="Nederlands" data-language-local-name="neerlandês" 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/Pleokroisme" title="Pleokroisme — norueguês nynorsk" lang="nn" hreflang="nn" data-title="Pleokroisme" data-language-autonym="Norsk nynorsk" data-language-local-name="norueguês nynorsk" class="interlanguage-link-target"><span>Norsk nynorsk</span></a></li><li class="interlanguage-link interwiki-pl mw-list-item"><a href="https://pl.wikipedia.org/wiki/Pleochroizm" title="Pleochroizm — polaco" lang="pl" hreflang="pl" data-title="Pleochroizm" data-language-autonym="Polski" data-language-local-name="polaco" class="interlanguage-link-target"><span>Polski</span></a></li><li class="interlanguage-link interwiki-ro mw-list-item"><a href="https://ro.wikipedia.org/wiki/Pleocroism" title="Pleocroism — romeno" lang="ro" hreflang="ro" data-title="Pleocroism" data-language-autonym="Română" data-language-local-name="romeno" 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%9F%D0%BB%D0%B5%D0%BE%D1%85%D1%80%D0%BE%D0%B8%D0%B7%D0%BC" title="Плеохроизм — russo" lang="ru" hreflang="ru" data-title="Плеохроизм" data-language-autonym="Русский" data-language-local-name="russo" class="interlanguage-link-target"><span>Русский</span></a></li><li class="interlanguage-link interwiki-sh mw-list-item"><a href="https://sh.wikipedia.org/wiki/Pleokroizam" title="Pleokroizam — servo-croata" lang="sh" hreflang="sh" data-title="Pleokroizam" data-language-autonym="Srpskohrvatski / српскохрватски" data-language-local-name="servo-croata" class="interlanguage-link-target"><span>Srpskohrvatski / српскохрватски</span></a></li><li class="interlanguage-link interwiki-sl mw-list-item"><a href="https://sl.wikipedia.org/wiki/Pleohroizem" title="Pleohroizem — esloveno" lang="sl" hreflang="sl" data-title="Pleohroizem" data-language-autonym="Slovenščina" data-language-local-name="esloveno" 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%B5%D0%BE%D1%85%D1%80%D0%BE%D0%B8%D0%B7%D0%B0%D0%BC" title="Плеохроизам — sérvio" lang="sr" hreflang="sr" data-title="Плеохроизам" data-language-autonym="Српски / srpski" data-language-local-name="sérvio" 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/Pleokroism" title="Pleokroism — sueco" lang="sv" hreflang="sv" data-title="Pleokroism" data-language-autonym="Svenska" data-language-local-name="sueco" class="interlanguage-link-target"><span>Svenska</span></a></li><li class="interlanguage-link interwiki-uk mw-list-item"><a href="https://uk.wikipedia.org/wiki/%D0%9F%D0%BB%D0%B5%D0%BE%D1%85%D1%80%D0%BE%D1%97%D0%B7%D0%BC" title="Плеохроїзм — ucraniano" lang="uk" hreflang="uk" data-title="Плеохроїзм" data-language-autonym="Українська" data-language-local-name="ucraniano" 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/Pleoxroizm" title="Pleoxroizm — usbeque" lang="uz" hreflang="uz" data-title="Pleoxroizm" data-language-autonym="Oʻzbekcha / ўзбекча" data-language-local-name="usbeque" 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/%C4%90a_s%E1%BA%AFc" title="Đa sắc — vietnamita" lang="vi" hreflang="vi" data-title="Đa sắc" data-language-autonym="Tiếng Việt" data-language-local-name="vietnamita" 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/%E5%A4%9A%E8%89%B2%E6%80%A7" title="多色性 — chinês" lang="zh" hreflang="zh" data-title="多色性" data-language-autonym="中文" data-language-local-name="chinês" 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/Q112895#sitelinks-wikipedia" title="Editar 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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">Aspeto</div> <button class="vector-pinnable-header-toggle-button vector-pinnable-header-pin-button" data-event-name="pinnable-header.vector-appearance.pin">mover para a barra lateral</button> <button class="vector-pinnable-header-toggle-button vector-pinnable-header-unpin-button" data-event-name="pinnable-header.vector-appearance.unpin">ocultar</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">Origem: Wikipédia, a enciclopédia livre.</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="pt" dir="ltr"><figure class="mw-default-size" typeof="mw:File/Thumb"><a href="/wiki/Ficheiro:Cordierite2.JPG" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/4/4e/Cordierite2.JPG/220px-Cordierite2.JPG" decoding="async" width="220" height="171" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/4/4e/Cordierite2.JPG/330px-Cordierite2.JPG 1.5x, //upload.wikimedia.org/wikipedia/commons/4/4e/Cordierite2.JPG 2x" data-file-width="338" data-file-height="262" /></a><figcaption>Pleocroísmo da cordierita observado a partir da rotação de um polarizador linear na lente da câmera.</figcaption></figure> <p>O <b>pleocroísmo</b> é um <a href="/wiki/Fen%C3%B3meno_%C3%B3ptico" class="mw-redirect" title="Fenómeno óptico">fenómeno óptico</a> no qual grãos <a href="/wiki/Mineral" title="Mineral">minerais</a> de uma <a href="/wiki/Rocha" title="Rocha">rocha</a> apresentam diferentes cores quando observados segundo ângulos diferentes ao <a href="/wiki/Microsc%C3%B3pio_petrogr%C3%A1fico" title="Microscópio petrográfico">microscópio petrográfico</a> de luz polarizada.<sup id="cite_ref-Webmineral_1-0" class="reference"><a href="#cite_note-Webmineral-1"><span>[</span>1<span>]</span></a></sup> </p> <meta property="mw:PageProp/toc" /> <div class="mw-heading mw-heading2"><h2 id="Explicação"><span id="Explica.C3.A7.C3.A3o"></span>Explicação</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Pleocro%C3%ADsmo&veaction=edit&section=1" title="Editar secção: Explicação" class="mw-editsection-visualeditor"><span>editar</span></a><span class="mw-editsection-divider"> | </span><a href="/w/index.php?title=Pleocro%C3%ADsmo&action=edit&section=1" title="Editar código-fonte da secção: Explicação"><span>editar código-fonte</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>O pleocrísmo é causado pela <a href="/wiki/Refrac%C3%A7%C3%A3o_dupla" class="mw-redirect" title="Refracção dupla">refracção dupla</a> da luz por um <a href="/wiki/Mineral" title="Mineral">mineral</a>. Luz com diferentes <a href="/wiki/Polariza%C3%A7%C3%A3o" class="mw-disambig" title="Polarização">polarizações</a> é desviada em graus diferentes pelo <a href="/wiki/Cristal" title="Cristal">cristal</a>, e assim segue percursos diferentes através dele. Os componentes de um raio de luz dividido percorrem caminhos diferentes no mineral e movem-se a velocidades diferentes, e cada caminho absorverá diferentes cores de luz. Quando o mineral é observado de um dado ângulo, estará presente a luz que resulta de uma determinada combinação de percursos e polarizações da luz, cada uma das quais levou à absorção de luz de cores diferentes. De um outro ângulo, a luz que passa através do cristal será resultado de uma outra combinação de caminhos e polarizações da luz, cada uma com a sua cor própria. Assim, a luz que passa através do mineral terá diferentes cores ao ser observada de ângulos diferentes, dando a ideia de que aquele tem várias cores. </p><p>Os cristais dos <a href="/wiki/Sistema_cristalino" title="Sistema cristalino">sistemas</a> tetragonal, trigonal e hexagonal podem apenas exibir duas cores e dizem-se <a href="/wiki/Dicro%C3%ADsmo" title="Dicroísmo">dicróicos</a>. Os cristais ortorrômbicos, monoclínicos e triclínicos podem exibir três e dizem-se tricróicos. Os minerais do sistema cúbico não podem exibir pelocroísmo<sup id="cite_ref-2" class="reference"><a href="#cite_note-2"><span>[</span>2<span>]</span></a></sup><sup id="cite_ref-Webmineral_1-1" class="reference"><a href="#cite_note-Webmineral-1"><span>[</span>1<span>]</span></a></sup>. A <a href="/wiki/Turmalina" title="Turmalina">turmalina</a> é notável por exibir forte pleocroísmo<sup id="cite_ref-3" class="reference"><a href="#cite_note-3"><span>[</span>3<span>]</span></a></sup>. As gemas são por vezes lapidadas e colocadas de forma a exibir ou esconder o seu pleocroísmo, dependendo das cores e da sua atractividade. </p> <div class="mw-heading mw-heading2"><h2 id="Em_mineralogia">Em mineralogia</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Pleocro%C3%ADsmo&veaction=edit&section=2" title="Editar secção: Em mineralogia" class="mw-editsection-visualeditor"><span>editar</span></a><span class="mw-editsection-divider"> | </span><a href="/w/index.php?title=Pleocro%C3%ADsmo&action=edit&section=2" title="Editar código-fonte da secção: Em mineralogia"><span>editar código-fonte</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>O pleocroísmo é uma ferramenta extremamente útil em <a href="/wiki/Mineralogia" title="Mineralogia">mineralogia</a> na identificação de minerais, uma vez que minerais de outro modo semelhantes muitas vezes têm pleocroísmos muito diferentes. Em tais casos, uma <a href="/wiki/L%C3%A2mina_delgada" title="Lâmina delgada">lâmina delgada</a> do mineral é usada e examinada sob luz polarizada transmitida num microscópio petrográfico. </p> <div class="mw-heading mw-heading2"><h2 id="Ver_também"><span id="Ver_tamb.C3.A9m"></span>Ver também</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Pleocro%C3%ADsmo&veaction=edit&section=3" title="Editar secção: Ver também" class="mw-editsection-visualeditor"><span>editar</span></a><span class="mw-editsection-divider"> | </span><a href="/w/index.php?title=Pleocro%C3%ADsmo&action=edit&section=3" title="Editar código-fonte da secção: Ver também"><span>editar código-fonte</span></a><span class="mw-editsection-bracket">]</span></span></div> <ul><li><a href="/wiki/Birrefring%C3%AAncia" title="Birrefringência">Birrefringência</a></li></ul> <div class="mw-heading mw-heading2"><h2 id="Referências"><span id="Refer.C3.AAncias"></span>Referências</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Pleocro%C3%ADsmo&veaction=edit&section=4" title="Editar secção: Referências" class="mw-editsection-visualeditor"><span>editar</span></a><span class="mw-editsection-divider"> | </span><a href="/w/index.php?title=Pleocro%C3%ADsmo&action=edit&section=4" title="Editar código-fonte da secção: Referências"><span>editar código-fonte</span></a><span class="mw-editsection-bracket">]</span></span></div> <div class="reflist" style="list-style-type: decimal;"> <div class="mw-references-wrap"><ol class="references"> <li id="cite_note-Webmineral-1"><span class="mw-cite-backlink">↑ <sup><i><b><a href="#cite_ref-Webmineral_1-0">a</a></b></i></sup> <sup><i><b><a href="#cite_ref-Webmineral_1-1">b</a></b></i></sup></span> <span class="reference-text"><a rel="nofollow" class="external free" href="http://webmineral.com/help/Pleochroism.shtml">http://webmineral.com/help/Pleochroism.shtml</a> Webmineral: Pleochroism in minerals</span> </li> <li id="cite_note-2"><span class="mw-cite-backlink"><a href="#cite_ref-2">↑</a></span> <span class="reference-text"><a rel="nofollow" class="external free" href="http://www.galleries.com/minerals/property/pleochro.htm">http://www.galleries.com/minerals/property/pleochro.htm</a> The Pleochroic Minerals</span> </li> <li id="cite_note-3"><span class="mw-cite-backlink"><a href="#cite_ref-3">↑</a></span> <span class="reference-text">Bruce H. Billings, "Pleochroism", in AccessScience@McGraw-Hill, <a rel="nofollow" class="external free" href="http://www.accessscience.com">http://www.accessscience.com</a>, DOI 10.1036/1097-8542.528400</span> </li> </ol></div></div>    </div><noscript><img src="https://login.wikimedia.org/wiki/Special:CentralAutoLogin/start?type=1x1" alt="" width="1" height="1" style="border: none; position: absolute;"></noscript> <div class="printfooter" data-nosnippet="">Obtida de "<a dir="ltr" href="https://pt.wikipedia.org/w/index.php?title=Pleocroísmo&oldid=68074065">https://pt.wikipedia.org/w/index.php?title=Pleocroísmo&oldid=68074065</a>"</div></div> <div id="catlinks" class="catlinks" data-mw="interface"><div id="mw-normal-catlinks" class="mw-normal-catlinks"><a href="/wiki/Especial:Categorias" title="Especial:Categorias">Categoria</a>: <ul><li><a href="/wiki/Categoria:Mineralogia" title="Categoria:Mineralogia">Mineralogia</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"> Esta página foi editada pela última vez às 17h25min de 5 de junho de 2024.</li> <li id="footer-info-copyright">Este texto é disponibilizado nos termos da licença <a rel="nofollow" class="external text" href="https://creativecommons.org/licenses/by-sa/4.0/deed.pt">Atribuição-CompartilhaIgual 4.0 Internacional (CC BY-SA 4.0) da Creative Commons</a>; pode estar sujeito a condições adicionais. 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