{"id":1145,"date":"2025-05-23T11:12:17","date_gmt":"2025-05-23T14:12:17","guid":{"rendered":"https:\/\/laboratorios.ufrrj.br\/mineraiserochas\/?p=1145"},"modified":"2025-06-09T14:11:45","modified_gmt":"2025-06-09T17:11:45","slug":"tremolita","status":"publish","type":"post","link":"https:\/\/laboratorios.ufrrj.br\/mineraiserochas\/tremolita\/","title":{"rendered":"Tremolita (Tremolite)"},"content":{"rendered":"\n<p class=\"has-medium-font-size\">A tremolita \u00e9 um silicato complexo de c\u00e1lcio, magn\u00e9sio e ferro do grupo dos anfib\u00f3lios, com f\u00f3rmula Ca\u2082(Mg,Fe)\u2085Si\u2088O\u2082\u2082(OH)\u2082. Cristaliza no sistema monocl\u00ednico e ocorre com h\u00e1bito prism\u00e1tico, fibroso ou maci\u00e7o. Suas cores variam do branco ao verde escuro, podendo tamb\u00e9m ser cinza ou amarelada, com brilho v\u00edtreo ou sedoso. Possui dureza entre 5 e 6, densidade de 2,9 a 3,1, clivagem perfeita em dois planos e fratura irregular a fibrosa. Forma-se em rochas metam\u00f3rficas ricas em carbonatos de c\u00e1lcio e magn\u00e9sio, como m\u00e1rmores dolom\u00edticos e rochas ultram\u00e1ficas. Algumas variedades fibrosas s\u00e3o classificadas como asbesto, hoje restrito por riscos \u00e0 sa\u00fade. \u00c9 usada em estudos geol\u00f3gicos e valorizada por colecionadores. Ocorre em locais como Su\u00ed\u00e7a, Canad\u00e1, EUA, Brasil e \u00c1frica do Sul.<\/p>\n\n\n\n<div class=\"minerais-content\">\n<style>\n  \/* Quadradinhos na cor #9c5932 *\/\n  .minerais-content ul.custom-square {\n    list-style-type: none;\n    padding-left: 4em;\n  }\n  .minerais-content ul.custom-square li {\n    position: relative;\n    color: black;\n    margin-bottom: 0.3em;\n  }\n  .minerais-content ul.custom-square li::before {\n    content: \"\u25a0\";\n    color: #9c5932;\n    position: absolute;\n    left: -2.5em;\n    font-size: 1em;\n    top: 0;\n  }\n  \/* Setinha \u25ba antes dos t\u00edtulos *\/\n  .minerais-content .with-arrow::before {\n    content: \"\u25ba\";\n    color: #9c5932;\n    margin-right: 0.4em;\n  }\n  \/* Texto preto e tamanhos *\/\n  .minerais-content p,\n  .minerais-content span,\n  .minerais-content strong,\n  .minerais-content ul,\n  .minerais-content li,\n  .minerais-content td {\n    color: black !important;\n    font-size: 0.95em;\n  }\n  \/* Tabela com espa\u00e7amento interno m\u00ednimo e bordas #9c5932 *\/\n  .minerais-content table.property-table {\n    width: 100%;\n    border-collapse: collapse;\n    margin-bottom: 2em;\n    border: 1.5px solid #9c5932;\n  }\n  .minerais-content table.property-table td {\n    vertical-align: middle;\n    padding: 0.05em 0.1em;\n    text-align: justify;\n    border: 1px solid #9c5932;\n  }\n  .minerais-content table.property-table td:first-child {\n    font-weight: bold;\n    white-space: nowrap;\n    color: black;\n    position: relative;\n    text-align: left;\n  }\n  .minerais-content table.property-table \ntd:first-child::before {\n    content: \"\u25ba\";\n    color: #9c5932;\n    margin-right: 0.4em;\n  }\n  .minerais-content hr.custom-divider {\n    border: none;\n    border-top: 3px solid #9c5932;\n    margin: 2em 0;\n  }\n<\/style>\n\n\n\n<hr class=\"custom-divider\">\n\n<table class=\"property-table\">\n  <tr>\n    <td>Composi\u00e7\u00e3o Qu\u00edmica:<\/td>\n    <td>\n      <ul class=\"custom-square\">\n        <li>Ca\u2082(Mg,Fe)\u2085Si\u2088O\u2082\u2082(OH)\u2082<br>\n          <span style=\"font-size: 0.9em;\">(Silicato complexo de c\u00e1lcio, magn\u00e9sio e ferro, pertencente ao grupo dos anfib\u00f3lios.)<\/span>\n        <\/li>\n      <\/ul>\n    <\/td>\n  <\/tr>\n  <tr>\n    <td>Sistema Cristalino:<\/td>\n    <td>\n      <ul class=\"custom-square\">\n        <li>Monocl\u00ednico<\/li>\n      <\/ul>\n    <\/td>\n  <\/tr>\n  <tr>\n    <td>H\u00e1bito:<\/td>\n    <td>\n      <ul class=\"custom-square\">\n        <li>Prism\u00e1tico alongado<\/li>\n        <li>Fibroso<\/li>\n        <li>Radial<\/li>\n        <li>Em agregados columnados ou maci\u00e7os<\/li>\n      <\/ul>\n    <\/td>\n  <\/tr>\n  <tr>\n    <td>Cor:<\/td>\n    <td>\n      <ul class=\"custom-square\">\n        <li>Branco<\/li>\n        <li>Verde p\u00e1lido a verde escuro<\/li>\n        <li>Cinza<\/li>\n        <li>Amarelado<\/li>\n      <\/ul>\n    <\/td>\n  <\/tr>\n  <tr>\n    <td>Brilho:<\/td>\n    <td>\n      <ul class=\"custom-square\">\n        <li>V\u00edtreo<\/li>\n        <li>Sedoso (em variedades fibrosas)<\/li>\n      <\/ul>\n    <\/td>\n  <\/tr>\n  <tr>\n    <td>Dureza (Mohs):<\/td>\n    <td>\n      <ul class=\"custom-square\">\n        <li>5 a 6<\/li>\n      <\/ul>\n    <\/td>\n  <\/tr>\n  <tr>\n    <td>Densidade Relativa:<\/td>\n    <td>\n      <ul class=\"custom-square\">\n        <li>2,9 a 3,1<\/li>\n      <\/ul>\n    <\/td>\n  <\/tr>\n  <tr>\n    <td>Clivagem:<\/td>\n    <td>\n      <ul class=\"custom-square\">\n        <li>Perfeita em duas dire\u00e7\u00f5es, formando \u00e2ngulos de aproximadamente 56\u00b0 e 124\u00b0, t\u00edpica dos anfib\u00f3lios.<\/li>\n      <\/ul>\n    <\/td>\n  <\/tr>\n  <tr>\n    <td>Fratura:<\/td>\n    <td>\n      <ul class=\"custom-square\">\n        <li>Irregular a fibrosa<\/li>\n      <\/ul>\n    <\/td>\n  <\/tr>\n<\/table>\n\n\n\n<hr class=\"custom-divider\">\n\n<p style=\"margin-bottom: 1.3em;\">\n  <strong class=\"with-arrow\" style=\"font-size: 1.1em; display: inline;\">Origem:<\/strong>\n  <span>\n    A Tremolita \u00e9 um mineral metam\u00f3rfico que se forma principalmente em rochas metam\u00f3rficas ricas em carbonato de c\u00e1lcio e magn\u00e9sio, como os m\u00e1rmores dolom\u00edticos e as rochas ultram\u00e1ficas\n submetidas a metamorfismo de baixo a m\u00e9dio grau. Pode tamb\u00e9m ocorrer \ncomo resultado da metamorfose de calc\u00e1rios e dolomitos ricos em s\u00edlica.\n  <\/span>\n<\/p>\n\n<p class=\"with-arrow\" style=\"margin-bottom: 0.8em; font-size: 1.1em; font-weight: bold; display: block;\">Usos:<\/p>\n<ul class=\"custom-square\" style=\"line-height: 1.8;\">\n  <li><strong>Industrial:<\/strong> Algumas variedades fibrosas de tremolita s\u00e3o classificadas como formas de asbesto\n\t   (anfib\u00f3lio asbestiforme), utilizado historicamente como material \n\t  isolante e resistente ao fogo. Contudo, seu uso foi amplamente \n\t  restringido ou banido devido aos riscos \u00e0 sa\u00fade (doen\u00e7as respirat\u00f3rias \n\t  graves, como asbestose e mesotelioma).<\/li>\n  <li><strong>Cient\u00edfico:<\/strong> Estudo em petrologia metam\u00f3rfica como indicadora de condi\u00e7\u00f5es de forma\u00e7\u00e3o (temperatura e press\u00e3o).<\/li>\n  <li><strong>Colecionismo:<\/strong> Cristais bem formados e agregados fibrosos ou radiados s\u00e3o apreciados por colecionadores de minerais.<\/li>\n<\/ul>\n\n<p class=\"with-arrow\" style=\"margin-bottom: 0.8em; font-size: 1.1em; font-weight: bold; display: block;\">Localiza\u00e7\u00f5es T\u00edpicas:<\/p>\n<ul class=\"custom-square\" style=\"line-height: 1.8;\">\n  <li>It\u00e1lia \u2013 Vale de Tremola, no maci\u00e7o de Gotardo, Su\u00ed\u00e7a (onde o mineral foi originalmente descrito).<\/li>\n  <li>Canad\u00e1 \u2013 Ont\u00e1rio e Quebec, especialmente em dep\u00f3sitos associados a rochas ultram\u00e1ficas.<\/li>\n  <li>Estados Unidos \u2013 Calif\u00f3rnia, Nova York e Montana.<\/li>\n  <li>Brasil \u2013 Presen\u00e7a em Minas Gerais e Bahia, principalmente em \u00e1reas de metamorfismo de rochas carbon\u00e1ticas.<\/li>\n  <li>\u00c1frica do Sul \u2013 em complexos ultram\u00e1ficos.<\/li>\n<\/ul>\n\n<hr class=\"custom-divider\">\n<\/div>\n\n\n\n<figure class=\"wp-block-gallery has-nested-images columns-default is-cropped wp-block-gallery-1 is-layout-flex wp-block-gallery-is-layout-flex\">\n<figure class=\"wp-block-image size-large\"><a href=\"https:\/\/laboratorios.ufrrj.br\/mineraiserochas\/wp-content\/uploads\/sites\/2\/2025\/05\/TREMOLITA-2-1.png\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"1024\" data-id=\"1153\" src=\"https:\/\/laboratorios.ufrrj.br\/mineraiserochas\/wp-content\/uploads\/sites\/2\/2025\/05\/TREMOLITA-2-1-1024x1024.png\" alt=\"\" class=\"wp-image-1153\" srcset=\"https:\/\/laboratorios.ufrrj.br\/mineraiserochas\/wp-content\/uploads\/sites\/2\/2025\/05\/TREMOLITA-2-1-1024x1024.png 1024w, https:\/\/laboratorios.ufrrj.br\/mineraiserochas\/wp-content\/uploads\/sites\/2\/2025\/05\/TREMOLITA-2-1-300x300.png 300w, https:\/\/laboratorios.ufrrj.br\/mineraiserochas\/wp-content\/uploads\/sites\/2\/2025\/05\/TREMOLITA-2-1-150x150.png 150w, https:\/\/laboratorios.ufrrj.br\/mineraiserochas\/wp-content\/uploads\/sites\/2\/2025\/05\/TREMOLITA-2-1-768x768.png 768w, https:\/\/laboratorios.ufrrj.br\/mineraiserochas\/wp-content\/uploads\/sites\/2\/2025\/05\/TREMOLITA-2-1-200x200.png 200w, https:\/\/laboratorios.ufrrj.br\/mineraiserochas\/wp-content\/uploads\/sites\/2\/2025\/05\/TREMOLITA-2-1-70x70.png 70w, https:\/\/laboratorios.ufrrj.br\/mineraiserochas\/wp-content\/uploads\/sites\/2\/2025\/05\/TREMOLITA-2-1.png 1440w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/a><\/figure>\n\n\n\n<figure class=\"wp-block-image size-large\"><a href=\"https:\/\/laboratorios.ufrrj.br\/mineraiserochas\/wp-content\/uploads\/sites\/2\/2025\/05\/TREMOLITA-3.png\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"1024\" data-id=\"1154\" src=\"https:\/\/laboratorios.ufrrj.br\/mineraiserochas\/wp-content\/uploads\/sites\/2\/2025\/05\/TREMOLITA-3-1024x1024.png\" alt=\"\" class=\"wp-image-1154\" srcset=\"https:\/\/laboratorios.ufrrj.br\/mineraiserochas\/wp-content\/uploads\/sites\/2\/2025\/05\/TREMOLITA-3-1024x1024.png 1024w, https:\/\/laboratorios.ufrrj.br\/mineraiserochas\/wp-content\/uploads\/sites\/2\/2025\/05\/TREMOLITA-3-300x300.png 300w, https:\/\/laboratorios.ufrrj.br\/mineraiserochas\/wp-content\/uploads\/sites\/2\/2025\/05\/TREMOLITA-3-150x150.png 150w, https:\/\/laboratorios.ufrrj.br\/mineraiserochas\/wp-content\/uploads\/sites\/2\/2025\/05\/TREMOLITA-3-768x768.png 768w, https:\/\/laboratorios.ufrrj.br\/mineraiserochas\/wp-content\/uploads\/sites\/2\/2025\/05\/TREMOLITA-3-200x200.png 200w, https:\/\/laboratorios.ufrrj.br\/mineraiserochas\/wp-content\/uploads\/sites\/2\/2025\/05\/TREMOLITA-3-70x70.png 70w, https:\/\/laboratorios.ufrrj.br\/mineraiserochas\/wp-content\/uploads\/sites\/2\/2025\/05\/TREMOLITA-3.png 1440w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/a><\/figure>\n\n\n\n<figure class=\"wp-block-image size-large\"><a href=\"https:\/\/laboratorios.ufrrj.br\/mineraiserochas\/wp-content\/uploads\/sites\/2\/2025\/05\/TREMOLITA-4.png\"><img decoding=\"async\" data-id=\"1155\" src=\"https:\/\/laboratorios.ufrrj.br\/mineraiserochas\/wp-content\/uploads\/sites\/2\/2025\/05\/TREMOLITA-4-1024x1024.png\" alt=\"\" class=\"wp-image-1155\"\/><\/a><\/figure>\n\n\n\n<figure class=\"wp-block-image size-large\"><a href=\"https:\/\/laboratorios.ufrrj.br\/mineraiserochas\/wp-content\/uploads\/sites\/2\/2025\/05\/TREMOLITA.png\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"1024\" data-id=\"1156\" src=\"https:\/\/laboratorios.ufrrj.br\/mineraiserochas\/wp-content\/uploads\/sites\/2\/2025\/05\/TREMOLITA-1024x1024.png\" alt=\"\" class=\"wp-image-1156\" srcset=\"https:\/\/laboratorios.ufrrj.br\/mineraiserochas\/wp-content\/uploads\/sites\/2\/2025\/05\/TREMOLITA-1024x1024.png 1024w, https:\/\/laboratorios.ufrrj.br\/mineraiserochas\/wp-content\/uploads\/sites\/2\/2025\/05\/TREMOLITA-300x300.png 300w, https:\/\/laboratorios.ufrrj.br\/mineraiserochas\/wp-content\/uploads\/sites\/2\/2025\/05\/TREMOLITA-150x150.png 150w, https:\/\/laboratorios.ufrrj.br\/mineraiserochas\/wp-content\/uploads\/sites\/2\/2025\/05\/TREMOLITA-768x768.png 768w, https:\/\/laboratorios.ufrrj.br\/mineraiserochas\/wp-content\/uploads\/sites\/2\/2025\/05\/TREMOLITA-200x200.png 200w, https:\/\/laboratorios.ufrrj.br\/mineraiserochas\/wp-content\/uploads\/sites\/2\/2025\/05\/TREMOLITA-70x70.png 70w, https:\/\/laboratorios.ufrrj.br\/mineraiserochas\/wp-content\/uploads\/sites\/2\/2025\/05\/TREMOLITA.png 1440w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/a><\/figure>\n<\/figure>\n","protected":false},"excerpt":{"rendered":"<p>A tremolita \u00e9 um silicato complexo de c\u00e1lcio, magn\u00e9sio e ferro do grupo dos anfib\u00f3lios, com f\u00f3rmula Ca\u2082(Mg,Fe)\u2085Si\u2088O\u2082\u2082(OH)\u2082. Cristaliza no sistema monocl\u00ednico [&hellip;]<\/p>\n","protected":false},"author":2,"featured_media":1156,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[41],"tags":[],"class_list":["post-1145","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-inossilicatos"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v26.8 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Tremolita (Tremolite) - Museu de Rochas e Minerais<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/laboratorios.ufrrj.br\/mineraiserochas\/tremolita\/\" \/>\n<meta property=\"og:locale\" content=\"pt_BR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Tremolita (Tremolite) - Museu de Rochas e Minerais\" \/>\n<meta property=\"og:description\" content=\"A tremolita \u00e9 um silicato complexo de c\u00e1lcio, magn\u00e9sio e ferro do grupo dos anfib\u00f3lios, com f\u00f3rmula Ca\u2082(Mg,Fe)\u2085Si\u2088O\u2082\u2082(OH)\u2082. 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