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href="#Gisements"> <div class="vector-toc-text"> <span class="vector-toc-numb">2</span> <span>Gisements</span> </div> </a> <ul id="toc-Gisements-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Métamorphisme" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Métamorphisme"> <div class="vector-toc-text"> <span class="vector-toc-numb">3</span> <span>Métamorphisme</span> </div> </a> <ul id="toc-Métamorphisme-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Histoire" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Histoire"> <div class="vector-toc-text"> <span class="vector-toc-numb">4</span> <span>Histoire</span> </div> </a> <ul id="toc-Histoire-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Liens_externes" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Liens_externes"> <div class="vector-toc-text"> <span class="vector-toc-numb">5</span> <span>Liens externes</span> </div> </a> <ul id="toc-Liens_externes-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="Sommaire" class="vector-toc-landmark"> <div id="vector-page-titlebar-toc" class="vector-dropdown vector-page-titlebar-toc vector-button-flush-left" title="Table des matières" > <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="Basculer la table des matières" > <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">Basculer la table des matières</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">Dunite</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="Aller à un article dans une autre langue. Disponible en 30 langues." > <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-30" 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">30 langues</span> </label> <div class="vector-dropdown-content"> <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li class="interlanguage-link interwiki-ar mw-list-item"><a href="https://ar.wikipedia.org/wiki/%D8%AF%D9%88%D9%86%D9%8A%D8%AA" title="دونيت – arabe" lang="ar" hreflang="ar" data-title="دونيت" data-language-autonym="العربية" data-language-local-name="arabe" 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/Dunit" title="Dunit – azerbaïdjanais" lang="az" hreflang="az" data-title="Dunit" data-language-autonym="Azərbaycanca" data-language-local-name="azerbaïdjanais" 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%94%D1%83%D0%BD%D1%96%D1%82" title="Дуніт – biélorusse" lang="be" hreflang="be" data-title="Дуніт" data-language-autonym="Беларуская" data-language-local-name="biélorusse" 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/Dunita" title="Dunita – catalan" lang="ca" hreflang="ca" data-title="Dunita" data-language-autonym="Català" data-language-local-name="catalan" class="interlanguage-link-target"><span>Català</span></a></li><li class="interlanguage-link interwiki-de mw-list-item"><a href="https://de.wikipedia.org/wiki/Dunit" title="Dunit – allemand" lang="de" hreflang="de" data-title="Dunit" data-language-autonym="Deutsch" data-language-local-name="allemand" class="interlanguage-link-target"><span>Deutsch</span></a></li><li class="interlanguage-link interwiki-en mw-list-item"><a href="https://en.wikipedia.org/wiki/Dunite" title="Dunite – anglais" lang="en" hreflang="en" data-title="Dunite" data-language-autonym="English" data-language-local-name="anglais" class="interlanguage-link-target"><span>English</span></a></li><li class="interlanguage-link interwiki-eo mw-list-item"><a href="https://eo.wikipedia.org/wiki/Olivinito" title="Olivinito – espéranto" lang="eo" hreflang="eo" data-title="Olivinito" data-language-autonym="Esperanto" data-language-local-name="espéranto" class="interlanguage-link-target"><span>Esperanto</span></a></li><li class="interlanguage-link interwiki-es mw-list-item"><a href="https://es.wikipedia.org/wiki/Dunita" title="Dunita – espagnol" lang="es" hreflang="es" data-title="Dunita" data-language-autonym="Español" data-language-local-name="espagnol" 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/Duniit" title="Duniit – estonien" lang="et" hreflang="et" data-title="Duniit" data-language-autonym="Eesti" data-language-local-name="estonien" 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/Dunita" title="Dunita – basque" lang="eu" hreflang="eu" data-title="Dunita" data-language-autonym="Euskara" data-language-local-name="basque" class="interlanguage-link-target"><span>Euskara</span></a></li><li class="interlanguage-link interwiki-gl mw-list-item"><a href="https://gl.wikipedia.org/wiki/Dunita" title="Dunita – galicien" lang="gl" hreflang="gl" data-title="Dunita" data-language-autonym="Galego" data-language-local-name="galicien" class="interlanguage-link-target"><span>Galego</span></a></li><li class="interlanguage-link interwiki-hy mw-list-item"><a href="https://hy.wikipedia.org/wiki/%D4%B4%D5%B8%D6%82%D5%B6%D5%AB%D5%BF" title="Դունիտ – arménien" lang="hy" hreflang="hy" data-title="Դունիտ" data-language-autonym="Հայերեն" data-language-local-name="arménien" 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/Dunit" title="Dunit – indonésien" lang="id" hreflang="id" data-title="Dunit" data-language-autonym="Bahasa Indonesia" data-language-local-name="indonésien" 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/Dunite" title="Dunite – italien" lang="it" hreflang="it" data-title="Dunite" data-language-autonym="Italiano" data-language-local-name="italien" class="interlanguage-link-target"><span>Italiano</span></a></li><li class="interlanguage-link interwiki-ka mw-list-item"><a href="https://ka.wikipedia.org/wiki/%E1%83%93%E1%83%A3%E1%83%9C%E1%83%98%E1%83%A2%E1%83%98" title="დუნიტი – géorgien" lang="ka" hreflang="ka" data-title="დუნიტი" data-language-autonym="ქართული" data-language-local-name="géorgien" class="interlanguage-link-target"><span>ქართული</span></a></li><li class="interlanguage-link interwiki-ko mw-list-item"><a href="https://ko.wikipedia.org/wiki/%EB%91%90%EB%82%98%EC%9D%B4%ED%8A%B8" title="두나이트 – coréen" lang="ko" hreflang="ko" data-title="두나이트" data-language-autonym="한국어" data-language-local-name="coréen" 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%94%D1%83%D0%BD%D0%B8%D1%82" title="Дунит – kirghize" lang="ky" hreflang="ky" data-title="Дунит" data-language-autonym="Кыргызча" data-language-local-name="kirghize" 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/Dunitas" title="Dunitas – lituanien" lang="lt" hreflang="lt" data-title="Dunitas" data-language-autonym="Lietuvių" data-language-local-name="lituanien" class="interlanguage-link-target"><span>Lietuvių</span></a></li><li class="interlanguage-link interwiki-nl mw-list-item"><a href="https://nl.wikipedia.org/wiki/Duniet" title="Duniet – néerlandais" lang="nl" hreflang="nl" data-title="Duniet" data-language-autonym="Nederlands" data-language-local-name="néerlandais" 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/Dunitt" title="Dunitt – norvégien nynorsk" lang="nn" hreflang="nn" data-title="Dunitt" data-language-autonym="Norsk nynorsk" data-language-local-name="norvégien nynorsk" 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/Dunitt" title="Dunitt – norvégien bokmål" lang="nb" hreflang="nb" data-title="Dunitt" data-language-autonym="Norsk bokmål" data-language-local-name="norvégien bokmål" 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/Dunit" title="Dunit – polonais" lang="pl" hreflang="pl" data-title="Dunit" data-language-autonym="Polski" data-language-local-name="polonais" 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/Dunito" title="Dunito – portugais" lang="pt" hreflang="pt" data-title="Dunito" data-language-autonym="Português" data-language-local-name="portugais" 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/Dunit" title="Dunit – roumain" lang="ro" hreflang="ro" data-title="Dunit" data-language-autonym="Română" data-language-local-name="roumain" 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%94%D1%83%D0%BD%D0%B8%D1%82" title="Дунит – russe" lang="ru" hreflang="ru" data-title="Дунит" data-language-autonym="Русский" data-language-local-name="russe" class="interlanguage-link-target"><span>Русский</span></a></li><li class="interlanguage-link interwiki-sv mw-list-item"><a href="https://sv.wikipedia.org/wiki/Dunit" title="Dunit – suédois" lang="sv" hreflang="sv" data-title="Dunit" data-language-autonym="Svenska" data-language-local-name="suédois" 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%94%D1%83%D0%BD%D1%96%D1%82" title="Дуніт – ukrainien" lang="uk" hreflang="uk" data-title="Дуніт" data-language-autonym="Українська" data-language-local-name="ukrainien" 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/Dunit" title="Dunit – ouzbek" lang="uz" hreflang="uz" data-title="Dunit" data-language-autonym="Oʻzbekcha / ўзбекча" data-language-local-name="ouzbek" 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/Dunit" title="Dunit – vietnamien" lang="vi" hreflang="vi" data-title="Dunit" data-language-autonym="Tiếng Việt" data-language-local-name="vietnamien" 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/%E7%B4%94%E6%A9%84%E6%AC%96%E5%B2%A9" title="純橄欖岩 – chinois" lang="zh" hreflang="zh" data-title="純橄欖岩" data-language-autonym="中文" data-language-local-name="chinois" 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/Q1147343#sitelinks-wikipedia" title="Modifier les liens interlangues" class="wbc-editpage">Modifier les liens</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="Espaces de noms"> <div id="p-associated-pages" class="vector-menu vector-menu-tabs mw-portlet mw-portlet-associated-pages" > <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li id="ca-nstab-main" class="selected vector-tab-noicon mw-list-item"><a href="/wiki/Dunite" title="Voir le contenu de la page [c]" accesskey="c"><span>Article</span></a></li><li id="ca-talk" class="vector-tab-noicon mw-list-item"><a href="/wiki/Discussion:Dunite" rel="discussion" title="Discussion au sujet de cette page de contenu [t]" accesskey="t"><span>Discussion</span></a></li> </ul> </div> </div> <div id="vector-variants-dropdown" class="vector-dropdown emptyPortlet" > <input type="checkbox" id="vector-variants-dropdown-checkbox" role="button" aria-haspopup="true" data-event-name="ui.dropdown-vector-variants-dropdown" class="vector-dropdown-checkbox " aria-label="Modifier la variante de langue" > <label id="vector-variants-dropdown-label" for="vector-variants-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">français</span> </label> <div class="vector-dropdown-content"> <div id="p-variants" class="vector-menu mw-portlet mw-portlet-variants emptyPortlet" > <div class="vector-menu-content"> <ul class="vector-menu-content-list"> </ul> </div> </div> </div> </div> </nav> </div> <div id="right-navigation" class="vector-collapsible"> <nav aria-label="Affichages"> <div id="p-views" class="vector-menu vector-menu-tabs mw-portlet mw-portlet-views" > <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li id="ca-view" class="selected vector-tab-noicon mw-list-item"><a href="/wiki/Dunite"><span>Lire</span></a></li><li id="ca-ve-edit" class="vector-tab-noicon mw-list-item"><a href="/w/index.php?title=Dunite&veaction=edit" title="Modifier cette page [v]" accesskey="v"><span>Modifier</span></a></li><li id="ca-edit" class="collapsible vector-tab-noicon mw-list-item"><a href="/w/index.php?title=Dunite&action=edit" title="Modifier le wikicode de cette page [e]" accesskey="e"><span>Modifier le code</span></a></li><li id="ca-history" class="vector-tab-noicon mw-list-item"><a href="/w/index.php?title=Dunite&action=history" title="Historique des versions de cette page [h]" accesskey="h"><span>Voir l’historique</span></a></li> </ul> </div> </div> </nav> <nav class="vector-page-tools-landmark" aria-label="Outils de la page"> <div id="vector-page-tools-dropdown" class="vector-dropdown vector-page-tools-dropdown" > <input type="checkbox" id="vector-page-tools-dropdown-checkbox" role="button" aria-haspopup="true" data-event-name="ui.dropdown-vector-page-tools-dropdown" class="vector-dropdown-checkbox " aria-label="Outils" > <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">Outils</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">Outils</div> <button class="vector-pinnable-header-toggle-button vector-pinnable-header-pin-button" data-event-name="pinnable-header.vector-page-tools.pin">déplacer vers la barre latérale</button> <button class="vector-pinnable-header-toggle-button vector-pinnable-header-unpin-button" data-event-name="pinnable-header.vector-page-tools.unpin">masquer</button> </div> <div id="p-cactions" class="vector-menu mw-portlet mw-portlet-cactions emptyPortlet vector-has-collapsible-items" title="Plus d’options" > <div class="vector-menu-heading"> Actions </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/Dunite"><span>Lire</span></a></li><li id="ca-more-ve-edit" class="vector-more-collapsible-item mw-list-item"><a href="/w/index.php?title=Dunite&veaction=edit" title="Modifier cette page [v]" accesskey="v"><span>Modifier</span></a></li><li id="ca-more-edit" class="collapsible vector-more-collapsible-item mw-list-item"><a href="/w/index.php?title=Dunite&action=edit" title="Modifier le wikicode de cette page [e]" accesskey="e"><span>Modifier le code</span></a></li><li id="ca-more-history" class="vector-more-collapsible-item mw-list-item"><a href="/w/index.php?title=Dunite&action=history"><span>Voir l’historique</span></a></li> </ul> </div> </div> <div id="p-tb" class="vector-menu mw-portlet mw-portlet-tb" > <div class="vector-menu-heading"> Général </div> <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li id="t-whatlinkshere" class="mw-list-item"><a href="/wiki/Sp%C3%A9cial:Pages_li%C3%A9es/Dunite" title="Liste des pages liées qui pointent sur celle-ci [j]" accesskey="j"><span>Pages liées</span></a></li><li id="t-recentchangeslinked" class="mw-list-item"><a href="/wiki/Sp%C3%A9cial:Suivi_des_liens/Dunite" rel="nofollow" title="Liste des modifications récentes des pages appelées par celle-ci [k]" accesskey="k"><span>Suivi des pages liées</span></a></li><li id="t-upload" class="mw-list-item"><a href="//fr.wikipedia.org/wiki/Aide:Importer_un_fichier" title="Téléverser des fichiers [u]" accesskey="u"><span>Téléverser un fichier</span></a></li><li id="t-permalink" class="mw-list-item"><a href="/w/index.php?title=Dunite&oldid=223821247" title="Adresse permanente de cette version de cette page"><span>Lien permanent</span></a></li><li id="t-info" class="mw-list-item"><a href="/w/index.php?title=Dunite&action=info" title="Davantage d’informations sur cette page"><span>Informations sur la page</span></a></li><li id="t-cite" class="mw-list-item"><a href="/w/index.php?title=Sp%C3%A9cial:Citer&page=Dunite&id=223821247&wpFormIdentifier=titleform" title="Informations sur la manière de citer cette page"><span>Citer cette page</span></a></li><li id="t-urlshortener" class="mw-list-item"><a href="/w/index.php?title=Sp%C3%A9cial:UrlShortener&url=https%3A%2F%2Ffr.wikipedia.org%2Fwiki%2FDunite"><span>Obtenir l'URL raccourcie</span></a></li><li id="t-urlshortener-qrcode" class="mw-list-item"><a href="/w/index.php?title=Sp%C3%A9cial:QrCode&url=https%3A%2F%2Ffr.wikipedia.org%2Fwiki%2FDunite"><span>Télécharger le code QR</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"> Imprimer / exporter </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=Sp%C3%A9cial:Livre&bookcmd=book_creator&referer=Dunite"><span>Créer un livre</span></a></li><li id="coll-download-as-rl" class="mw-list-item"><a href="/w/index.php?title=Sp%C3%A9cial:DownloadAsPdf&page=Dunite&action=show-download-screen"><span>Télécharger comme PDF</span></a></li><li id="t-print" class="mw-list-item"><a href="/w/index.php?title=Dunite&printable=yes" title="Version imprimable de cette page [p]" accesskey="p"><span>Version imprimable</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"> Dans d’autres projets </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:Dunite" hreflang="en"><span>Wikimedia Commons</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/Q1147343" title="Lien vers l’élément dans le dépôt de données connecté [g]" accesskey="g"><span>Élément Wikidata</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="Outils de la page"> <div id="vector-page-tools-pinned-container" class="vector-pinned-container"> </div> </nav> <nav class="vector-appearance-landmark" aria-label="Apparence"> <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" 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mw-parser-output" lang="fr" dir="ltr"><div class="bandeau-container metadata bandeau-article bandeau-niveau-ebauche"><div class="bandeau-cell bandeau-icone" style="display:table-cell;padding-right:0.5em"><span class="noviewer" typeof="mw:File"><a href="/wiki/Fichier:Granit_fluidalny_z_granatami.jpg" class="mw-file-description"><img alt="" src="//upload.wikimedia.org/wikipedia/commons/thumb/4/49/Granit_fluidalny_z_granatami.jpg/60px-Granit_fluidalny_z_granatami.jpg" decoding="async" width="44" height="35" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/4/49/Granit_fluidalny_z_granatami.jpg/120px-Granit_fluidalny_z_granatami.jpg 1.5x" data-file-width="800" data-file-height="640" /></a></span></div><div class="bandeau-cell" style="display:table-cell;padding-right:0.5em"> <p><strong class="bandeau-titre">Cet article est une <a href="/wiki/Aide:%C3%89bauche" title="Aide:Ébauche">ébauche</a> concernant la <a href="/wiki/P%C3%A9trologie" title="Pétrologie">pétrologie</a>.</strong> </p> <div class="nomobile"> Vous pouvez partager vos connaissances en l’améliorant (<b><a href="/wiki/Aide:Comment_modifier_une_page" title="Aide:Comment modifier une page">comment ?</a></b>) selon les recommandations du <a href="/wiki/Projet:Min%C3%A9raux_et_roches" title="Projet:Minéraux et roches">projet minéraux et roches</a>.</div> </div></div> <div class="bandeau-container metadata homonymie hatnote"><div class="bandeau-cell bandeau-icone" style="display:table-cell;padding-right:0.5em"><span class="noviewer" typeof="mw:File"><a href="/wiki/Aide:Homonymie" title="Aide:Homonymie"><img alt="Page d’aide sur l’homonymie" src="//upload.wikimedia.org/wikipedia/commons/thumb/6/6f/Confusion_colour.svg/20px-Confusion_colour.svg.png" decoding="async" width="20" height="15" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/6/6f/Confusion_colour.svg/40px-Confusion_colour.svg.png 1.5x" data-file-width="260" data-file-height="200" /></a></span></div><div class="bandeau-cell" style="display:table-cell;padding-right:0.5em"> <p>Ne doit pas être confondu avec <a href="/wiki/Dunnite" class="mw-redirect" title="Dunnite">Dunnite</a>. </p> </div></div> <figure class="mw-default-size mw-halign-right" typeof="mw:File/Thumb"><a href="/wiki/Fichier:Dunit.jpg" class="mw-file-description"><img alt="photo d'un bloc verdâtre de dunite" src="//upload.wikimedia.org/wikipedia/commons/thumb/a/aa/Dunit.jpg/330px-Dunit.jpg" decoding="async" width="260" height="195" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/a/aa/Dunit.jpg/500px-Dunit.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/a/aa/Dunit.jpg/960px-Dunit.jpg 2x" data-file-width="1024" data-file-height="768" /></a><figcaption>Échantillon de dunite.</figcaption></figure> <p>La <b>dunite</b> est une <a href="/wiki/Roche_plutonique" title="Roche plutonique">roche plutonique</a> <a href="/wiki/Roche_ultramafique" title="Roche ultramafique">ultramafique</a>, de structure grenue ou <a href="/wiki/Structure_(p%C3%A9trographie)#Structure_phanéritique" title="Structure (pétrographie)">phanéritique</a>. </p> <meta property="mw:PageProp/toc" /> <div class="mw-heading mw-heading2"><h2 id="Minéraux"><span id="Min.C3.A9raux"></span>Minéraux</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Dunite&veaction=edit&section=1" title="Modifier la section : Minéraux" class="mw-editsection-visualeditor"><span>modifier</span></a><span class="mw-editsection-divider"> | </span><a href="/w/index.php?title=Dunite&action=edit&section=1" title="Modifier le code source de la section : Minéraux"><span>modifier le code</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>De façon caractéristique, la dunite contient plus de 90 % d'<a href="/wiki/Olivine" title="Olivine">olivine</a> et de petites quantités de <a href="/wiki/Pyrox%C3%A8ne" title="Pyroxène">pyroxène</a> et de <a href="/wiki/Chromite" title="Chromite">chromite</a>. C'est le membre supérieur riche en olivine de la série des <a href="/wiki/P%C3%A9ridotite" title="Péridotite">péridotites</a>, roches constituant le <a href="/wiki/Manteau_(Terre)" class="mw-redirect" title="Manteau (Terre)">manteau</a>. </p> <div class="mw-heading mw-heading2"><h2 id="Gisements">Gisements</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Dunite&veaction=edit&section=2" title="Modifier la section : Gisements" class="mw-editsection-visualeditor"><span>modifier</span></a><span class="mw-editsection-divider"> | </span><a href="/w/index.php?title=Dunite&action=edit&section=2" title="Modifier le code source de la section : Gisements"><span>modifier le code</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>La dunite se présente rarement à l'intérieur des roches continentales, mais lorsque c'est le cas, elle se trouve de façon caractéristique à la base de séquences d'<a href="/wiki/Ophiolite" title="Ophiolite">ophiolites</a>, là où des morceaux du <a href="/wiki/Manteau_(Terre)" class="mw-redirect" title="Manteau (Terre)">manteau</a> rocheux provenant d'une zone de <a href="/wiki/Subduction" title="Subduction">subduction</a> ont été plongés dans la croûte continentale par <a href="/wiki/Obduction" title="Obduction">obduction</a> en raison d'une <a href="/wiki/Collision_continentale" title="Collision continentale">collision continentale</a> ou en présence d'un <a href="/wiki/Arc_volcanique" title="Arc volcanique">arc volcanique</a>. </p><p>Un gisement à ciel ouvert de dunite existe dans l'État de <a href="/wiki/Washington_(%C3%89tat)" title="Washington (État)">Washington</a> (États-Unis), près du <a href="/wiki/Mont_Baker" title="Mont Baker">mont Baker</a>. </p> <div class="mw-heading mw-heading2"><h2 id="Métamorphisme"><span id="M.C3.A9tamorphisme"></span>Métamorphisme</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Dunite&veaction=edit&section=3" title="Modifier la section : Métamorphisme" class="mw-editsection-visualeditor"><span>modifier</span></a><span class="mw-editsection-divider"> | </span><a href="/w/index.php?title=Dunite&action=edit&section=3" title="Modifier le code source de la section : Métamorphisme"><span>modifier le code</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>La dunite est soumise à un processus de <a href="/wiki/R%C3%A9trom%C3%A9tamorphisme" title="Rétrométamorphisme">rétrométamorphisme</a> près de la surface et se transforme alors en <a href="/wiki/Serpentinite" title="Serpentinite">serpentinite</a>. </p> <div class="mw-heading mw-heading2"><h2 id="Histoire">Histoire</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Dunite&veaction=edit&section=4" title="Modifier la section : Histoire" class="mw-editsection-visualeditor"><span>modifier</span></a><span class="mw-editsection-divider"> | </span><a href="/w/index.php?title=Dunite&action=edit&section=4" title="Modifier le code source de la section : Histoire"><span>modifier le code</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>Le nom de la roche vient de celui d'une montagne de <a href="/wiki/Nouvelle-Z%C3%A9lande" title="Nouvelle-Zélande">Nouvelle-Zélande</a> de la région de Nelson, <i>Dun mountain</i>, ainsi nommée à cause de la couleur gris-brun de sa végétation qui révèle la présence sous-jacente de roches ultramafiques. Il lui a été donné par le <a href="/wiki/G%C3%A9ologue" title="Géologue">géologue</a> autrichien <a href="/wiki/Ferdinand_von_Hochstetter" title="Ferdinand von Hochstetter">Ferdinand von Hochstetter</a> en <a href="/wiki/1859" title="1859">1859</a>. </p> <style data-mw-deduplicate="TemplateStyles:r194021218">.mw-parser-output .autres-projets>.titre{text-align:center;margin:0.2em 0}.mw-parser-output .autres-projets>ul{margin:0;padding:0}.mw-parser-output .autres-projets>ul>li{list-style:none;margin:0.2em 0;text-indent:0;padding-left:24px;min-height:20px;text-align:left;display:block}.mw-parser-output .autres-projets>ul>li>a{font-style:italic}@media(max-width:720px){.mw-parser-output .autres-projets{float:none}}</style><div class="autres-projets boite-grise boite-a-droite noprint js-interprojets"> <p class="titre">Sur les autres projets Wikimedia :</p> <ul class="noarchive plainlinks"> <li class="commons"><a class="external text" href="https://commons.wikimedia.org/wiki/Category:Dunite?uselang=fr">Dunite</a>, sur <span class="project">Wikimedia Commons</span></li> </ul> </div> <div class="mw-heading mw-heading2"><h2 id="Liens_externes">Liens externes</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Dunite&veaction=edit&section=5" title="Modifier la section : Liens externes" class="mw-editsection-visualeditor"><span>modifier</span></a><span class="mw-editsection-divider"> | </span><a href="/w/index.php?title=Dunite&action=edit&section=5" title="Modifier le code source de la section : Liens externes"><span>modifier le code</span></a><span class="mw-editsection-bracket">]</span></span></div> <p class="mw-empty-elt"> </p> <ul><li class="mw-empty-elt"></li> <li class="mw-empty-elt"></li> <li><div class="liste-horizontale"><span class="wd_identifiers">Notices dans des dictionnaires ou encyclopédies généralistes<span class="noprint wikidata-linkback skin-invert"><span class="mw-valign-baseline noviewer" typeof="mw:File"><a href="https://www.wikidata.org/wiki/Q1147343?uselang=fr#identifiers" title="Voir et modifier les données sur Wikidata"><img alt="Voir et modifier les données sur Wikidata" src="//upload.wikimedia.org/wikipedia/commons/thumb/7/73/Blue_pencil.svg/20px-Blue_pencil.svg.png" decoding="async" width="10" height="10" class="mw-file-element" data-file-width="600" data-file-height="600" /></a></span></span></span> : <ul><li><a rel="nofollow" class="external text" href="https://www.britannica.com/science/dunite"><i>Britannica</i></a></li> <li><a rel="nofollow" class="external text" href="http://esu.com.ua/search_articles.php?id=19564"><i>Encyclopédie de l'Ukraine moderne</i></a></li> <li><a rel="nofollow" class="external text" href="https://www.enciclopedia.cat/EC-GEC-0100035.xml"><i>Gran Enciclopèdia Catalana</i></a></li> <li><a rel="nofollow" class="external text" href="https://snl.no/dunitt"><i>Store norske leksikon</i></a></li> </ul></div></li> <li class="mw-empty-elt"></li></ul> <ul id="bandeau-portail" class="bandeau-portail"><li><span class="bandeau-portail-element"><span class="bandeau-portail-icone"><span class="noviewer" typeof="mw:File"><a href="/wiki/Portail:G%C3%A9ologie" title="Portail de la géologie"><img alt="icône décorative" src="//upload.wikimedia.org/wikipedia/commons/thumb/8/88/Monocline01.svg/40px-Monocline01.svg.png" decoding="async" width="35" height="24" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/8/88/Monocline01.svg/60px-Monocline01.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/8/88/Monocline01.svg/120px-Monocline01.svg.png 2x" data-file-width="1230" data-file-height="860" /></a></span></span> <span class="bandeau-portail-texte"><a href="/wiki/Portail:G%C3%A9ologie" title="Portail:Géologie">Portail de la géologie</a></span> </span></li> <li><span class="bandeau-portail-element"><span class="bandeau-portail-icone"><span class="noviewer skin-invert-image" typeof="mw:File"><a href="/wiki/Portail:Min%C3%A9raux_et_roches" title="Portail des minéraux et roches"><img alt="icône décorative" src="//upload.wikimedia.org/wikipedia/commons/thumb/a/a1/Emerald_rough_300x422.jpg/17px-Emerald_rough_300x422.jpg" decoding="async" width="17" height="24" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/a/a1/Emerald_rough_300x422.jpg/25px-Emerald_rough_300x422.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/a/a1/Emerald_rough_300x422.jpg/34px-Emerald_rough_300x422.jpg 2x" data-file-width="300" data-file-height="422" /></a></span></span> <span class="bandeau-portail-texte"><a href="/wiki/Portail:Min%C3%A9raux_et_roches" title="Portail:Minéraux et roches">Portail des minéraux et roches</a></span> </span></li> </ul>    </div><noscript><img src="https://auth.wikimedia.org/loginwiki/wiki/Special:CentralAutoLogin/start?useformat=desktop&type=1x1&usesul3=1" alt="" width="1" height="1" style="border: none; position: absolute;"></noscript> <div class="printfooter" data-nosnippet="">Ce document provient de « <a dir="ltr" href="https://fr.wikipedia.org/w/index.php?title=Dunite&oldid=223821247">https://fr.wikipedia.org/w/index.php?title=Dunite&oldid=223821247</a> ».</div></div> <div id="catlinks" class="catlinks" data-mw="interface"><div id="mw-normal-catlinks" class="mw-normal-catlinks"><a href="/wiki/Cat%C3%A9gorie:Accueil" title="Catégorie:Accueil">Catégorie</a> : <ul><li><a href="/wiki/Cat%C3%A9gorie:Roche_plutonique" title="Catégorie:Roche plutonique">Roche plutonique</a></li></ul></div><div id="mw-hidden-catlinks" class="mw-hidden-catlinks mw-hidden-cats-hidden">Catégories cachées : <ul><li><a href="/wiki/Cat%C3%A9gorie:Wikip%C3%A9dia:%C3%A9bauche_p%C3%A9trologie" title="Catégorie:Wikipédia:ébauche pétrologie">Wikipédia:ébauche pétrologie</a></li><li><a href="/wiki/Cat%C3%A9gorie:Cat%C3%A9gorie_Commons_avec_lien_local_identique_sur_Wikidata" title="Catégorie:Catégorie Commons avec lien local identique sur Wikidata">Catégorie Commons avec lien local identique sur Wikidata</a></li><li><a href="/wiki/Cat%C3%A9gorie:Page_utilisant_un_mod%C3%A8le_Bases_inactif" title="Catégorie:Page utilisant un modèle Bases inactif">Page utilisant un modèle Bases inactif</a></li><li><a href="/wiki/Cat%C3%A9gorie:Page_utilisant_P1417" title="Catégorie:Page utilisant P1417">Page utilisant P1417</a></li><li><a href="/wiki/Cat%C3%A9gorie:Page_utilisant_P4613" title="Catégorie:Page utilisant P4613">Page utilisant P4613</a></li><li><a href="/wiki/Cat%C3%A9gorie:Page_utilisant_P1296" title="Catégorie:Page utilisant P1296">Page utilisant P1296</a></li><li><a href="/wiki/Cat%C3%A9gorie:Page_utilisant_P4342" title="Catégorie:Page utilisant P4342">Page utilisant P4342</a></li><li><a href="/wiki/Cat%C3%A9gorie:Page_pointant_vers_des_bases_externes" title="Catégorie:Page pointant vers des bases externes">Page pointant vers des bases externes</a></li><li><a href="/wiki/Cat%C3%A9gorie:Page_pointant_vers_des_dictionnaires_ou_encyclop%C3%A9dies_g%C3%A9n%C3%A9ralistes" title="Catégorie:Page pointant vers des dictionnaires ou encyclopédies généralistes">Page pointant vers des dictionnaires ou encyclopédies généralistes</a></li><li><a href="/wiki/Cat%C3%A9gorie:Page_utilisant_le_mod%C3%A8le_Autorit%C3%A9_inactif" title="Catégorie:Page utilisant le modèle Autorité inactif">Page utilisant le modèle Autorité inactif</a></li><li><a href="/wiki/Cat%C3%A9gorie:Portail:G%C3%A9ologie/Articles_li%C3%A9s" title="Catégorie:Portail:Géologie/Articles liés">Portail:Géologie/Articles liés</a></li><li><a href="/wiki/Cat%C3%A9gorie:Portail:Sciences_de_la_Terre_et_de_l%27Univers/Articles_li%C3%A9s" title="Catégorie:Portail:Sciences de la Terre et de l'Univers/Articles liés">Portail:Sciences de la Terre et de l'Univers/Articles liés</a></li><li><a href="/wiki/Cat%C3%A9gorie:Portail:Sciences/Articles_li%C3%A9s" title="Catégorie:Portail:Sciences/Articles liés">Portail:Sciences/Articles liés</a></li><li><a href="/wiki/Cat%C3%A9gorie:Portail:Min%C3%A9raux_et_roches/Articles_li%C3%A9s" title="Catégorie:Portail:Minéraux et roches/Articles liés">Portail:Minéraux et roches/Articles liés</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"> La dernière modification de cette page a été faite le 12 mars 2025 à 17:53.</li> <li id="footer-info-copyright"><span style="white-space: normal"><a href="/wiki/Wikip%C3%A9dia:Citation_et_r%C3%A9utilisation_du_contenu_de_Wikip%C3%A9dia" title="Wikipédia:Citation et réutilisation du contenu de Wikipédia">Droit d'auteur</a> : les textes sont disponibles sous <a rel="nofollow" class="external text" href="https://creativecommons.org/licenses/by-sa/4.0/deed.fr">licence Creative Commons attribution, partage dans les mêmes conditions</a> ; 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