{"id":1517,"date":"2020-10-09T17:44:42","date_gmt":"2020-10-09T20:44:42","guid":{"rendered":"https:\/\/wp.ufpel.edu.br\/museudesolosrochaseminerais\/?page_id=1517"},"modified":"2020-10-09T18:34:35","modified_gmt":"2020-10-09T21:34:35","slug":"silicatos","status":"publish","type":"page","link":"https:\/\/wp.ufpel.edu.br\/museudesolosrochaseminerais\/silicatos\/","title":{"rendered":"Silicatos"},"content":{"rendered":"<h3><strong>CARACTER\u00cdSTICAS DOS SILICATOS<\/strong><\/h3>\n<p><span style=\"font-size: 12pt\">Silicatos: Compostos qu\u00edmicos mais presentes na constitui\u00e7\u00e3o das rochas.<\/span><\/p>\n<p style=\"text-align: center\"><strong><em><span style=\"font-size: 14pt\">Grupo dos Feldspatos<\/span><\/em><\/strong><\/p>\n<ul>\n<li><span style=\"font-size: 12pt\">KAlSi3O8 &#8211; <strong>Ortocl\u00e1sio<\/strong><\/span><\/li>\n<\/ul>\n<p><span style=\"font-size: 12pt\">\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 Feldspatos alcalinos ou ortocl\u00e1sios<\/span><\/p>\n<ul>\n<li><span style=\"font-size: 12pt\">NaAlSi3O8 &#8211; <strong>Albita<\/strong><\/span><\/li>\n<\/ul>\n<p><span style=\"font-size: 12pt\">\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 Feldspatos alcali-c\u00e1lcicos ou plagiocl\u00e1sios<\/span><\/p>\n<ul>\n<li><span style=\"font-size: 12pt\">CaAl2Si2O8 &#8211;<strong> Anortita<\/strong><\/span><\/li>\n<\/ul>\n<p><span style=\"font-size: 12pt\">Clivagem<strong>:<\/strong> 2 dire\u00e7\u00f5es<\/span><br \/>\n<span style=\"font-size: 12pt\">Cor:<strong> Ortocl\u00e1sios:<\/strong> Creme, tijolo, r\u00f3seo ou vermelho (impurezas da hematita)<\/span><br \/>\n<span style=\"font-size: 12pt\">\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 <strong>Plagiocl\u00e1sios:<\/strong> Cinza, branco, pardo, esverdeado.<\/span><\/p>\n<p><span style=\"font-size: 12pt\">Brilho: V\u00edtreo em fratura recente<\/span><\/p>\n<p><span style=\"font-size: 12pt\">Ocorr\u00eancia:\u00a0 Rochas Magm\u00e1ticas e Rochas Metam\u00f3rficas, mais raros<\/span><br \/>\n<span style=\"font-size: 12pt\">\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0nas Rochas Sedimentares porque se decomp\u00f5e em argila e caulim.<\/span><\/p>\n<h3 style=\"text-align: center\"><em><strong><span style=\"font-size: 14pt\">Grupo do Quartzo<\/span><\/strong><\/em><\/h3>\n<p><span style=\"font-size: 12pt\">SiO2 (s\u00edlica) &#8211; Cristalizado macroscopicamente &#8211; <strong>Quartzo<\/strong> (branco)<\/span><br \/>\n<span style=\"font-size: 12pt\">\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0<strong>Ametista<\/strong> (roxa)<\/span><br \/>\n<span style=\"font-size: 12pt\">\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0&#8211; Amorfa (n\u00e3o apresenta estrutura cristalina) &#8211;<strong> Opala<\/strong><\/span><br \/>\n<span style=\"font-size: 12pt\">\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0&#8211; Microcristalina &#8211; <strong>Calced\u00f4nia<\/strong><\/span><br \/>\n<span style=\"font-size: 12pt\">Clivagem: Ausente<\/span><br \/>\n<span style=\"font-size: 12pt\">Cor: Branco (incolor-cinza-roxa)<\/span><br \/>\n<span style=\"font-size: 12pt\">Brilho: V\u00edtreo<\/span><br \/>\n<span style=\"font-size: 12pt\">Ocorr\u00eancia: Deve ser suspeitada em quase todo tipo de rocha<\/span><\/p>\n<h3 style=\"text-align: center\"><em>Grupo dos Pirox\u00eanios e Anfib\u00f3lios<\/em><\/h3>\n<p><span style=\"font-size: 12pt\">S\u00e3o minerais de apar\u00eancia muito similar. S\u00e3o prism\u00e1ticos, de cor escura (quantidade de Fe e Mg), com clivagem em 2 planos.<\/span><\/p>\n<div id=\"attachment_1527\" style=\"width: 681px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" aria-describedby=\"caption-attachment-1527\" class=\"wp-image-1527 size-full\" src=\"https:\/\/wp.ufpel.edu.br\/museudesolosrochaseminerais\/files\/2020\/10\/Sem-u.png\" alt=\"\" width=\"671\" height=\"271\" srcset=\"https:\/\/wp.ufpel.edu.br\/museudesolosrochaseminerais\/files\/2020\/10\/Sem-u.png 671w, https:\/\/wp.ufpel.edu.br\/museudesolosrochaseminerais\/files\/2020\/10\/Sem-u-400x162.png 400w\" sizes=\"auto, (max-width: 671px) 100vw, 671px\" \/><p id=\"caption-attachment-1527\" class=\"wp-caption-text\">Fonte: https:\/\/www.ufjf.br\/nugeo\/files\/2009\/11\/Geologia-Cap3.pdf<\/p><\/div>\n<p><span style=\"font-size: 12pt\">* S\u00e3o muito suscept\u00edveis \u00e0 altera\u00e7\u00e3o em clima \u00famido, com forma\u00e7\u00e3o de minerais argilosos e libera\u00e7\u00e3o de hidr\u00f3xidos de Ferro e Mangan\u00eas, conferindo uma colora\u00e7\u00e3o avermelhada ao mineral da rocha em altera\u00e7\u00e3o ou aos solos deles derivados.<\/span><\/p>\n<h3 style=\"text-align: center\"><em>Grupo das Micas<\/em><\/h3>\n<p><span style=\"font-size: 12pt\">Minerais caracterizados por uma \u00f3tima clivagem laminar e boa elasticidade.<\/span><\/p>\n<p><span style=\"font-size: 12pt\">Distiguem 2 variedades principais:<\/span><\/p>\n<ul>\n<li><span style=\"font-size: 12pt\">Mica branca\u2192\u00a0<strong>Muscovita<\/strong><\/span><\/li>\n<li><span style=\"font-size: 12pt\">Mica Preta \u2192 <strong>Biotita<\/strong><\/span><\/li>\n<\/ul>\n<p><span style=\"font-size: 12pt\">Clivagem: Perfeita em 1 dire\u00e7\u00e3o<\/span><br \/>\n<span style=\"font-size: 12pt\">Brilho: Acetinado<\/span><br \/>\n<span style=\"font-size: 12pt\">Ocorr\u00eancia: <strong>Magm\u00e1tica e Metam\u00f3rfica<\/strong><\/span><br \/>\n<span style=\"font-size: 12pt\">\u00a0* A Biotita se altera facilmente por hidrata\u00e7\u00e3o, enquanto a muscovita n\u00e3o t\u00e3o facilmente.<\/span><\/p>\n<p>&nbsp;<\/p>\n<p><span style=\"font-size: 10pt\"><strong>Fonte<\/strong>: https:\/\/www.ufjf.br\/nugeo\/files\/2009\/11\/Geologia-Cap3.pdf<\/span><\/p>\n","protected":false},"excerpt":{"rendered":"<p>CARACTER\u00cdSTICAS DOS SILICATOS Silicatos: Compostos qu\u00edmicos mais presentes na constitui\u00e7\u00e3o das rochas. Grupo dos Feldspatos KAlSi3O8 &#8211; Ortocl\u00e1sio \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 Feldspatos alcalinos ou ortocl\u00e1sios NaAlSi3O8 [&hellip;]<\/p>\n","protected":false},"author":1048,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"class_list":["post-1517","page","type-page","status-publish","hentry","post"],"_links":{"self":[{"href":"https:\/\/wp.ufpel.edu.br\/museudesolosrochaseminerais\/wp-json\/wp\/v2\/pages\/1517","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/wp.ufpel.edu.br\/museudesolosrochaseminerais\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/wp.ufpel.edu.br\/museudesolosrochaseminerais\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/wp.ufpel.edu.br\/museudesolosrochaseminerais\/wp-json\/wp\/v2\/users\/1048"}],"replies":[{"embeddable":true,"href":"https:\/\/wp.ufpel.edu.br\/museudesolosrochaseminerais\/wp-json\/wp\/v2\/comments?post=1517"}],"version-history":[{"count":9,"href":"https:\/\/wp.ufpel.edu.br\/museudesolosrochaseminerais\/wp-json\/wp\/v2\/pages\/1517\/revisions"}],"predecessor-version":[{"id":1534,"href":"https:\/\/wp.ufpel.edu.br\/museudesolosrochaseminerais\/wp-json\/wp\/v2\/pages\/1517\/revisions\/1534"}],"wp:attachment":[{"href":"https:\/\/wp.ufpel.edu.br\/museudesolosrochaseminerais\/wp-json\/wp\/v2\/media?parent=1517"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}