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Disponible en 15 idiomas" > <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-15" 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">15 idiomas</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%A8%D9%8A%D8%B1%D8%AA%D8%B1%D8%A7%D9%86%D8%AF%D9%8A%D8%AA" title="بيرترانديت (árabe)" lang="ar" hreflang="ar" data-title="بيرترانديت" data-language-autonym="العربية" data-language-local-name="árabe" 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/Bertrandit" title="Bertrandit (azerbaiyano)" lang="az" hreflang="az" data-title="Bertrandit" data-language-autonym="Azərbaycanca" data-language-local-name="azerbaiyano" 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/Bertrandita" title="Bertrandita (catalán)" lang="ca" hreflang="ca" data-title="Bertrandita" data-language-autonym="Català" data-language-local-name="catalán" class="interlanguage-link-target"><span>Català</span></a></li><li class="interlanguage-link interwiki-da mw-list-item"><a href="https://da.wikipedia.org/wiki/Bertrandit" title="Bertrandit (danés)" lang="da" hreflang="da" data-title="Bertrandit" data-language-autonym="Dansk" data-language-local-name="danés" class="interlanguage-link-target"><span>Dansk</span></a></li><li class="interlanguage-link interwiki-de mw-list-item"><a href="https://de.wikipedia.org/wiki/Bertrandit" title="Bertrandit (alemán)" lang="de" hreflang="de" data-title="Bertrandit" data-language-autonym="Deutsch" data-language-local-name="alemán" 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/Bertrandite" title="Bertrandite (inglés)" lang="en" hreflang="en" data-title="Bertrandite" data-language-autonym="English" data-language-local-name="inglés" class="interlanguage-link-target"><span>English</span></a></li><li class="interlanguage-link interwiki-eu mw-list-item"><a href="https://eu.wikipedia.org/wiki/Bertrandita" title="Bertrandita (euskera)" lang="eu" hreflang="eu" data-title="Bertrandita" data-language-autonym="Euskara" data-language-local-name="euskera" 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/%D8%A8%D8%B1%D8%AA%D8%B1%D8%A7%D9%86%D8%AF%DB%8C%D8%AA" title="برتراندیت (persa)" lang="fa" hreflang="fa" data-title="برتراندیت" 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/Bertrandite" title="Bertrandite (francés)" lang="fr" hreflang="fr" data-title="Bertrandite" data-language-autonym="Français" data-language-local-name="francés" class="interlanguage-link-target"><span>Français</span></a></li><li class="interlanguage-link interwiki-it mw-list-item"><a href="https://it.wikipedia.org/wiki/Bertrandite" title="Bertrandite (italiano)" lang="it" hreflang="it" data-title="Bertrandite" data-language-autonym="Italiano" data-language-local-name="italiano" class="interlanguage-link-target"><span>Italiano</span></a></li><li class="interlanguage-link interwiki-nl mw-list-item"><a href="https://nl.wikipedia.org/wiki/Bertrandiet" title="Bertrandiet (neerlandés)" lang="nl" hreflang="nl" data-title="Bertrandiet" data-language-autonym="Nederlands" data-language-local-name="neerlandés" 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/Bertranditt" title="Bertranditt (noruego nynorsk)" lang="nn" hreflang="nn" data-title="Bertranditt" data-language-autonym="Norsk nynorsk" data-language-local-name="noruego nynorsk" class="interlanguage-link-target"><span>Norsk nynorsk</span></a></li><li class="interlanguage-link interwiki-pt mw-list-item"><a href="https://pt.wikipedia.org/wiki/Bertrandita" title="Bertrandita (portugués)" lang="pt" hreflang="pt" data-title="Bertrandita" data-language-autonym="Português" data-language-local-name="portugués" 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%91%D0%B5%D1%80%D1%82%D1%80%D0%B0%D0%BD%D0%B4%D0%B8%D1%82" title="Бертрандит (ruso)" lang="ru" hreflang="ru" data-title="Бертрандит" data-language-autonym="Русский" data-language-local-name="ruso" class="interlanguage-link-target"><span>Русский</span></a></li><li class="interlanguage-link interwiki-uk mw-list-item"><a href="https://uk.wikipedia.org/wiki/%D0%91%D0%B5%D1%80%D1%82%D1%80%D0%B0%D0%BD%D0%B4%D0%B8%D1%82" title="Бертрандит (ucraniano)" lang="uk" hreflang="uk" data-title="Бертрандит" data-language-autonym="Українська" data-language-local-name="ucraniano" class="interlanguage-link-target"><span>Українська</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/Q2582855#sitelinks-wikipedia" title="Editar enlaces interlingüísticos" class="wbc-editpage">Editar enlaces</a></span></div> </div> </div> </div> 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class="vector-menu mw-portlet mw-portlet-coll-print_export" > <div class="vector-menu-heading"> Imprimir/exportar </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=Especial:Libro&bookcmd=book_creator&referer=Bertrandita"><span>Crear un libro</span></a></li><li id="coll-download-as-rl" class="mw-list-item"><a href="/w/index.php?title=Especial:DownloadAsPdf&page=Bertrandita&action=show-download-screen"><span>Descargar como PDF</span></a></li><li id="t-print" class="mw-list-item"><a href="/w/index.php?title=Bertrandita&printable=yes" title="Versión imprimible de esta página [p]" accesskey="p"><span>Versión para imprimir</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"> En otros proyectos </div> <div class="vector-menu-content"> <ul class="vector-menu-content-list"> 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Wikipedia, la enciclopedia libre</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="es" dir="ltr"><style data-mw-deduplicate="TemplateStyles:r157776694">.mw-parser-output .infobox .imagen{max-width:100%;margin:0 auto}.mw-parser-output .infobox .imagen img{max-width:100%;height:auto}.mw-parser-output .infobox .mw-kartographer-container .thumbinner,.mw-parser-output .infobox .mw-kartographer-map{box-sizing:border-box;width:100%!important}body.skin-timeless .mw-parser-output .infobox .imagen a.image>img{max-width:100%!important;height:auto!important}</style><table class="infobox" style="width:22.7em; line-height: 1.4em; text-align:left; padding:.23em;"><tbody><tr><th colspan="3" class="cabecera" style="text-align:center;background-color:#7DA7D9;color:inherit;color:white;;">Bertrandita</th></tr><tr><td colspan="3" class="imagen" style="text-align:center;"> <span typeof="mw:File"><a href="/wiki/Archivo:Bertrandite-118734.jpg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/b/b9/Bertrandite-118734.jpg/320px-Bertrandite-118734.jpg" decoding="async" width="320" height="317" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/b/b9/Bertrandite-118734.jpg/480px-Bertrandite-118734.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/b/b9/Bertrandite-118734.jpg 2x" data-file-width="500" data-file-height="496" /></a></span></td></tr><tr><th colspan="3" style="text-align:center;background-color:#7DA7D9; color:white;;">General</th></tr><tr><th scope="row" style="text-align:left;background-color: #EEEEEE; font-weight:normal;">Categoría</th><td colspan="2"> Minerales <a href="/wiki/Sorosilicato" title="Sorosilicato">sorosilicatos</a></td></tr><tr><th scope="row" style="text-align:left;background-color: #EEEEEE; font-weight:normal;"><a href="/wiki/Clasificaci%C3%B3n_de_Strunz" title="Clasificación de Strunz">Clase</a></th><td colspan="2"> 9.BD.05 (<a href="/wiki/Strunz" class="mw-redirect" title="Strunz">Strunz</a>)</td></tr><tr><th scope="row" style="text-align:left;background-color: #EEEEEE; font-weight:normal;"><a href="/wiki/F%C3%B3rmula_(qu%C3%ADmica)" class="mw-redirect" title="Fórmula (química)">Fórmula química</a></th><td colspan="2"> <a href="/wiki/Berilio" title="Berilio">Be</a><sub>4</sub><a href="/wiki/Silicio" title="Silicio">Si</a><sub>2</sub><a href="/wiki/Ox%C3%ADgeno" title="Oxígeno">O</a><sub>7</sub>(<a href="/wiki/Hidroxilo" class="mw-redirect" title="Hidroxilo">OH</a>)<sub>2</sub></td></tr><tr><th colspan="3" style="text-align:center;background-color:#7DA7D9; color:white;;">Propiedades físicas</th></tr><tr><th scope="row" style="text-align:left;background-color: #EEEEEE; font-weight:normal;"><a href="/wiki/Color" title="Color">Color</a></th><td colspan="2"> Incoloro, amarillo pálido</td></tr><tr><th scope="row" style="text-align:left;background-color: #EEEEEE; font-weight:normal;"><a href="/wiki/M%C3%A9todo_de_la_raya" title="Método de la raya">Raya</a></th><td colspan="2"> Blanca</td></tr><tr><th scope="row" style="text-align:left;background-color: #EEEEEE; font-weight:normal;"><a href="/wiki/Lustre" title="Lustre">Lustre</a></th><td colspan="2"> Vítreo -fractura perlada-</td></tr><tr><th scope="row" style="text-align:left;background-color: #EEEEEE; font-weight:normal;"><a href="/wiki/Transparencia" class="mw-redirect" title="Transparencia">Transparencia</a></th><td colspan="2"> Transparente a translúcido</td></tr><tr><th scope="row" style="text-align:left;background-color: #EEEEEE; font-weight:normal;"><a href="/wiki/Sistema_cristalino" title="Sistema cristalino">Sistema cristalino</a></th><td colspan="2"> <a href="/wiki/Sistema_cristalino_ortorr%C3%B3mbico" title="Sistema cristalino ortorrómbico">Ortorrómbico</a>, piramidal</td></tr><tr><th scope="row" style="text-align:left;background-color: #EEEEEE; font-weight:normal;"><a href="/wiki/H%C3%A1bito_cristalino" title="Hábito cristalino">Hábito cristalino</a></th><td colspan="2"> Tabular fino, prismático o en forma de agujas</td></tr><tr><th scope="row" style="text-align:left;background-color: #EEEEEE; font-weight:normal;"><a href="/wiki/Macla" title="Macla">Macla</a></th><td colspan="2"> Común en forma de corazón</td></tr><tr><th scope="row" style="text-align:left;background-color: #EEEEEE; font-weight:normal;"><a href="/wiki/Escala_de_Mohs" class="mw-redirect" title="Escala de Mohs">Dureza</a></th><td colspan="2"> 6 - 7 (<a href="/wiki/Escalas_de_dureza#Escala_de_Mohs" title="Escalas de dureza">Mohs</a>)</td></tr><tr><th scope="row" style="text-align:left;background-color: #EEEEEE; font-weight:normal;"><a href="/wiki/Tenacidad" title="Tenacidad">Tenacidad</a></th><td colspan="2"> Quebradizo</td></tr><tr><th scope="row" style="text-align:left;background-color: #EEEEEE; font-weight:normal;"><a href="/wiki/Densidad" title="Densidad">Densidad</a></th><td colspan="2"> 2,59 - 2,60 g/cm³</td></tr><tr><th colspan="3" style="text-align:center;background-color:#7DA7D9; color:white;;">Variedades principales</th></tr><tr><th scope="row" style="text-align:left;background-color: #EEEEEE; font-weight:normal;">Gel-Bertrandita</th><td colspan="2"> coloidal vidriosa</td></tr><tr><td class="noprint" colspan="3" style="text-align:left;"><div class="plainlinks wikidata-link" style="font-size: 0.85em">[<a href="https://www.wikidata.org/wiki/Q2582855" class="extiw" title="d:Q2582855">editar datos en Wikidata</a>]</div></td></tr></tbody></table> <p>La <b>bertrandita</b> es un mineral de la clase de los <a href="/wiki/Sorosilicato" title="Sorosilicato">sorosilicatos</a>. Fue descubierta en 1883 cerca de <a href="/wiki/Nantes" title="Nantes">Nantes</a>, en la región de <a href="/wiki/Pa%C3%ADses_del_Loira" title="Países del Loira">Países del Loira</a> (<a href="/wiki/Francia" title="Francia">Francia</a>),<sup id="cite_ref-1" class="reference separada"><a href="#cite_note-1"><span class="corchete-llamada">[</span>1<span class="corchete-llamada">]</span></a></sup> siendo nombrada así en honor de Emile Bertrand, mineralogista francés. Un sinónimo poco usado es hessenbergita. </p> <meta property="mw:PageProp/toc" /> <div class="mw-heading mw-heading2"><h2 id="Características_químicas"><span id="Caracter.C3.ADsticas_qu.C3.ADmicas"></span>Características químicas</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Bertrandita&action=edit&section=1" title="Editar sección: Características químicas"><span>editar</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>Es un <a href="/wiki/Silicato" title="Silicato">silicato</a> hidroxilado de <a href="/wiki/Berilio" title="Berilio">berilio</a>. Tiene estructura molecular de sorosilicato con aniones adicionales <a href="/wiki/Hidroxilo" class="mw-redirect" title="Hidroxilo">hidroxilos</a>.<sup id="cite_ref-2" class="reference separada"><a href="#cite_note-2"><span class="corchete-llamada">[</span>2<span class="corchete-llamada">]</span></a></sup> </p><p>Además de los elementos de su fórmula, suele llevar como impurezas: <a href="/wiki/Aluminio" title="Aluminio">aluminio</a>, <a href="/wiki/Hierro" title="Hierro">hierro</a> y <a href="/wiki/Calcio" title="Calcio">calcio</a>. </p> <div class="mw-heading mw-heading2"><h2 id="Formación_y_yacimientos"><span id="Formaci.C3.B3n_y_yacimientos"></span>Formación y yacimientos</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Bertrandita&action=edit&section=2" title="Editar sección: Formación y yacimientos"><span>editar</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>Se forma en <a href="/wiki/Granito" title="Granito">granitos</a> y rocas <a href="/wiki/Pegmatita" title="Pegmatita">pegmatitas</a> asociadas al berilio, y en cavidades miarolíticas de greissen; comúnmente como mineral secundario por la alteración del <a href="/wiki/Berilo" title="Berilo">berilo</a>, más raramente como mineral primario. </p><p>Suele encontrarse asociado a otros minerales como: <a href="/wiki/Berilo" title="Berilo">berilo</a>, <a href="/wiki/Fenaquita" title="Fenaquita">fenaquita</a>, <a href="/w/index.php?title=Herderita&action=edit&redlink=1" class="new" title="Herderita (aún no redactado)">herderita</a>, <a href="/wiki/Turmalina" title="Turmalina">turmalina</a>, <a href="/wiki/Moscovita" title="Moscovita">moscovita</a>, <a href="/wiki/Fluorita" title="Fluorita">fluorita</a> o <a href="/wiki/Cuarzo" title="Cuarzo">cuarzo</a>. </p> <div class="mw-heading mw-heading2"><h2 id="Usos">Usos</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Bertrandita&action=edit&section=3" title="Editar sección: Usos"><span>editar</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>Algunos ejemplares puros pueden ser tallados y empleados como <a href="/wiki/Gema" title="Gema">gemas</a> en joyería.<sup id="cite_ref-3" class="reference separada"><a href="#cite_note-3"><span class="corchete-llamada">[</span>3<span class="corchete-llamada">]</span></a></sup> </p> <div class="mw-heading mw-heading2"><h2 id="Referencias">Referencias</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Bertrandita&action=edit&section=4" title="Editar sección: Referencias"><span>editar</span></a><span class="mw-editsection-bracket">]</span></span></div> <div class="listaref" style="list-style-type: decimal;"><ol class="references"> <li id="cite_note-1"><span class="mw-cite-backlink"><a href="#cite_ref-1">↑</a></span> <span class="reference-text"><span id="CITAREFDamour1878" class="citation publicación"><a href="/wiki/Alexis_Damour" title="Alexis Damour">Damour, Alexis</a> (1878). <a rel="nofollow" class="external text" href="http://rruff.info/rruff_1.0/uploads/Bulletin_de_la_Societe_francaise_de_mineralogie6_252.pdf">«Note et analyse sur le nouveau miné des environs de Nantes»</a>. <i>Bulletin de la Société Minéralogique de France</i> <span style="color:var(--color-subtle, #555 );">(en francés)</span> <b>6</b>: 252-254.</span><span title="ctx_ver=Z39.88-2004&rfr_id=info%3Asid%2Fes.wikipedia.org%3ABertrandita&rft.atitle=Note+et+analyse+sur+le+nouveau+min%C3%A9+des+environs+de+Nantes&rft.au=Damour%2C+Alexis&rft.aufirst=Alexis&rft.aulast=Damour&rft.date=1878&rft.genre=article&rft.jtitle=Bulletin+de+la+Soci%C3%A9t%C3%A9+Min%C3%A9ralogique+de+France&rft.pages=252-254&rft.volume=6&rft_id=http%3A%2F%2Frruff.info%2Frruff_1.0%2Fuploads%2FBulletin_de_la_Societe_francaise_de_mineralogie6_252.pdf&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal" class="Z3988"><span style="display:none;"> </span></span></span> </li> <li id="cite_note-2"><span class="mw-cite-backlink"><a href="#cite_ref-2">↑</a></span> <span class="reference-text"><span id="CITAREFSolov'evaBelov1965" class="citation publicación">Solov'eva, L.P.; Belov, N.V. (1965). <a rel="nofollow" class="external text" href="http://rruff.info/rruff_1.0/uploads/SPC9_458.pdf">«Precise determination of the crystal structure of bertrandite Be<sub>4</sub>(Si<sub>2</sub>O<sub>7</sub>)(OH)<sub>2</sub>»</a>. <i>Soviet Physics - Crystallography</i> <span style="color:var(--color-subtle, #555 );">(en inglés)</span> <b>9</b>: 458-460.</span><span title="ctx_ver=Z39.88-2004&rfr_id=info%3Asid%2Fes.wikipedia.org%3ABertrandita&rft.atitle=Precise+determination+of+the+crystal+structure+of+bertrandite+Be%3Csub%3E4%3C%2Fsub%3E%28Si%3Csub%3E2%3C%2Fsub%3EO%3Csub%3E7%3C%2Fsub%3E%29%28OH%29%3Csub%3E2%3C%2Fsub%3E&rft.au=Belov%2C+N.V.&rft.au=Solov%27eva%2C+L.P.&rft.aufirst=L.P.&rft.aulast=Solov%27eva&rft.date=1965&rft.genre=article&rft.jtitle=Soviet+Physics+-+Crystallography&rft.pages=458-460&rft.volume=9&rft_id=http%3A%2F%2Frruff.info%2Frruff_1.0%2Fuploads%2FSPC9_458.pdf&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal" class="Z3988"><span style="display:none;"> </span></span></span> </li> <li id="cite_note-3"><span class="mw-cite-backlink"><a href="#cite_ref-3">↑</a></span> <span class="reference-text"><a rel="nofollow" class="external text" href="http://www.gemdat.org/gem-642.html">Base de datos de gemas</a>.</span> </li> </ol></div> <ul><li><a rel="nofollow" class="external text" href="http://www.mindat.org/min-642.html">Bertrandita</a>, <i>mindat.org</i>.</li> <li><a rel="nofollow" class="external text" href="http://webmineral.com/data/Bertrandite.shtml">Bertrandita</a>, <i>webmineral.com</i>.</li> <li><a rel="nofollow" class="external text" href="http://rruff.geo.arizona.edu/doclib/hom/bertrandite.pdf">Manual de bertrandita</a>, <i>Mineral Data Publishing</i>.</li></ul> <style data-mw-deduplicate="TemplateStyles:r161257576">.mw-parser-output .mw-authority-control{margin-top:1.5em}.mw-parser-output .mw-authority-control .navbox table{margin:0}.mw-parser-output .mw-authority-control .navbox 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style="white-space:nowrap;"><span typeof="mw:File"><a href="/wiki/Wikidata" title="Wikidata"><img alt="Wd" src="//upload.wikimedia.org/wikipedia/commons/thumb/f/ff/Wikidata-logo.svg/20px-Wikidata-logo.svg.png" decoding="async" width="20" height="11" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/f/ff/Wikidata-logo.svg/30px-Wikidata-logo.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/f/ff/Wikidata-logo.svg/40px-Wikidata-logo.svg.png 2x" data-file-width="1050" data-file-height="590" /></a></span> Datos:</span> <span class="uid"><a href="https://www.wikidata.org/wiki/Q2582855" class="extiw" title="wikidata:Q2582855">Q2582855</a></span></li> <li><span style="white-space:nowrap;"><span typeof="mw:File"><a href="/wiki/Wikimedia_Commons" title="Commonscat"><img alt="Commonscat" src="//upload.wikimedia.org/wikipedia/commons/thumb/4/4a/Commons-logo.svg/15px-Commons-logo.svg.png" decoding="async" width="15" height="20" class="mw-file-element" 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