{"id":657,"date":"2025-04-08T11:51:06","date_gmt":"2025-04-08T14:51:06","guid":{"rendered":"https:\/\/laboratorios.ufrrj.br\/mineraiserochas\/?p=657"},"modified":"2025-09-02T15:59:29","modified_gmt":"2025-09-02T18:59:29","slug":"rutilo","status":"publish","type":"post","link":"https:\/\/laboratorios.ufrrj.br\/mineraiserochas\/rutilo\/","title":{"rendered":"Rutilo (Rutile)"},"content":{"rendered":"\n<p class=\"has-black-color has-text-color has-medium-font-size\">O rutilo TiO\u2082 \u00e9 um \u00f3xido de tit\u00e2nio (IV) do grupo rutilo, cristalizando no sistema tetragonal, formando cristais prism\u00e1ticos alongados, finos e agudos, al\u00e9m de massas fibrosas, granulares ou agregados maci\u00e7os. Apresenta cor vermelho, marrom-avermelhado, dourado a negro, \u00e0s vezes amarelado ou acastanhado, brilho adamantino a submet\u00e1lico, dureza 6\u20136,5, densidade relativa 4,2\u20134,3, fratura irregular a subconchoidal e clivagem imperfeita. \u00c9 comum em rochas \u00edgneas e metam\u00f3rficas (granitos, pegmatitos, gnaisses) e em dep\u00f3sitos aluvionares, frequentemente associado a quartzo, feldspato e ilmenita. \u00c9 a principal fonte de tit\u00e2nio, usado em ligas met\u00e1licas leves, pigmentos (TiO\u2082), cer\u00e2micas e refrat\u00e1rios. Variedades transparentes ou com inclus\u00f5es especiais s\u00e3o apreciadas como gemas raras. Ocorre no Brasil (Minas Gerais, Goi\u00e1s, Bahia), Noruega (Rogaland), Austr\u00e1lia (Queensland), Estados Unidos (Carolina do Norte, New Hampshire), It\u00e1lia (Toscana) e Sri Lanka (dep\u00f3sitos aluvionares de gemas).<\/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>Classe<\/td>\n    <td>\n      <ul class=\"custom-square\">\n        <li>\u00d3xidos<\/li>\n      <\/ul>\n    <\/td>\n  <\/tr>\n  <tr>\n    <td>Grupo<\/td>\n    <td>\n      <ul class=\"custom-square\">\n        <li>Rutilo<\/li>\n      <\/ul>\n    <\/td>\n  <\/tr>\n  <tr>\n    <td>Composi\u00e7\u00e3o Qu\u00edmica<\/td>\n    <td>\n      <ul class=\"custom-square\">\n        <li>TiO\u2082 \u2013 \u00f3xido de tit\u00e2nio (IV)<\/li>\n      <\/ul>\n    <\/td>\n  <\/tr>\n  <tr>\n    <td>Sistema Cristalino<\/td>\n    <td>\n      <ul class=\"custom-square\">\n        <li>Tetragonal<\/li>\n      <\/ul>\n    <\/td>\n  <\/tr>\n  <tr>\n    <td>H\u00e1bito<\/td>\n    <td>\n      <ul class=\"custom-square\">\n        <li>Cristais prism\u00e1ticos alongados, geralmente finos e agudos<\/li>\n        <li>Tamb\u00e9m ocorre em massas fibrosas, granulares ou em agregados maci\u00e7os<\/li>\n      <\/ul>\n    <\/td>\n  <\/tr>\n  <tr>\n    <td>Cor<\/td>\n    <td>\n      <ul class=\"custom-square\">\n        <li>Vermelho, marrom-avermelhado, dourado, negro; \u00e0s vezes amarelado ou acastanhado<\/li>\n      <\/ul>\n    <\/td>\n  <\/tr>\n  <tr>\n    <td>Brilho<\/td>\n    <td>\n      <ul class=\"custom-square\">\n        <li>Adamantino a submet\u00e1lico<\/li>\n      <\/ul>\n    <\/td>\n  <\/tr>\n  <tr>\n    <td>Dureza (Mohs)<\/td>\n    <td>\n      <ul class=\"custom-square\">\n        <li>6 \u2013 6,5<\/li>\n      <\/ul>\n    <\/td>\n  <\/tr>\n  <tr>\n    <td>Densidade Relativa<\/td>\n    <td>\n      <ul class=\"custom-square\">\n        <li>4,2 \u2013 4,3<\/li>\n      <\/ul>\n    <\/td>\n  <\/tr>\n  <tr>\n    <td>Clivagem<\/td>\n    <td>\n      <ul class=\"custom-square\">\n        <li>Imperfeita<\/li>\n      <\/ul>\n    <\/td>\n  <\/tr>\n  <tr>\n    <td>Fratura<\/td>\n    <td>\n      <ul class=\"custom-square\">\n        <li>Irregular a subconchoidal<\/li>\n      <\/ul>\n    <\/td>\n  <\/tr>\n<\/table>\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    Mineral comum em rochas \u00edgneas e metam\u00f3rficas, especialmente granitos, pegmatitos e gnaisses. Tamb\u00e9m ocorre em dep\u00f3sitos aluvionares secund\u00e1rios devido \u00e0 resist\u00eancia ao intemperismo. Frequentemente associado a quartzo, feldspato e ilmenita.\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> \u2013 Principal min\u00e9rio de tit\u00e2nio, usado na fabrica\u00e7\u00e3o de ligas met\u00e1licas leves, pigmentos brancos (TiO\u2082), cer\u00e2micas e refrat\u00e1rios.<\/li>\n  <li><strong>Cient\u00edfico<\/strong> \u2013 Importante em estudos de mineralogia, petrologia de pegmatitos e metamorfismo de alta temperatura.<\/li>\n  <li><strong>Gemol\u00f3gico<\/strong> \u2013 Variedades transparentes ou com inclus\u00f5es especiais podem ser usadas como gemas raras ou pedras de cole\u00e7\u00e3o.<\/li>\n  <li><strong>Outros<\/strong> \u2013 Valorizado em cole\u00e7\u00f5es mineral\u00f3gicas por sua cor intensa, brilho adamantino e cristais prism\u00e1ticos alongados.<\/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><strong>Brasil<\/strong> \u2013 Minas Gerais, Goi\u00e1s, Bahia<\/li>\n  <li><strong>Noruega<\/strong> \u2013 Rogaland<\/li>\n  <li><strong>Austr\u00e1lia<\/strong> \u2013 Queensland<\/li>\n  <li><strong>Estados Unidos<\/strong> \u2013 Carolina do Norte, Nova Hampshire<\/li>\n  <li><strong>It\u00e1lia<\/strong> \u2013 Toscana<\/li>\n  <li><strong>Sri Lanka<\/strong> \u2013 Dep\u00f3sitos aluvionares de gemas<\/li>\n<\/ul>\n\n<hr class=\"custom-divider\">\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\/09\/Rutilo-2.png\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"1024\" data-id=\"2094\" src=\"https:\/\/laboratorios.ufrrj.br\/mineraiserochas\/wp-content\/uploads\/sites\/2\/2025\/09\/Rutilo-2-1024x1024.png\" alt=\"\" class=\"wp-image-2094\" srcset=\"https:\/\/laboratorios.ufrrj.br\/mineraiserochas\/wp-content\/uploads\/sites\/2\/2025\/09\/Rutilo-2-1024x1024.png 1024w, https:\/\/laboratorios.ufrrj.br\/mineraiserochas\/wp-content\/uploads\/sites\/2\/2025\/09\/Rutilo-2-300x300.png 300w, https:\/\/laboratorios.ufrrj.br\/mineraiserochas\/wp-content\/uploads\/sites\/2\/2025\/09\/Rutilo-2-150x150.png 150w, https:\/\/laboratorios.ufrrj.br\/mineraiserochas\/wp-content\/uploads\/sites\/2\/2025\/09\/Rutilo-2-768x768.png 768w, https:\/\/laboratorios.ufrrj.br\/mineraiserochas\/wp-content\/uploads\/sites\/2\/2025\/09\/Rutilo-2-200x200.png 200w, https:\/\/laboratorios.ufrrj.br\/mineraiserochas\/wp-content\/uploads\/sites\/2\/2025\/09\/Rutilo-2-70x70.png 70w, https:\/\/laboratorios.ufrrj.br\/mineraiserochas\/wp-content\/uploads\/sites\/2\/2025\/09\/Rutilo-2.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\/09\/Rutilo-3.png\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"1024\" data-id=\"2095\" src=\"https:\/\/laboratorios.ufrrj.br\/mineraiserochas\/wp-content\/uploads\/sites\/2\/2025\/09\/Rutilo-3-1024x1024.png\" alt=\"\" class=\"wp-image-2095\" srcset=\"https:\/\/laboratorios.ufrrj.br\/mineraiserochas\/wp-content\/uploads\/sites\/2\/2025\/09\/Rutilo-3-1024x1024.png 1024w, https:\/\/laboratorios.ufrrj.br\/mineraiserochas\/wp-content\/uploads\/sites\/2\/2025\/09\/Rutilo-3-300x300.png 300w, https:\/\/laboratorios.ufrrj.br\/mineraiserochas\/wp-content\/uploads\/sites\/2\/2025\/09\/Rutilo-3-150x150.png 150w, https:\/\/laboratorios.ufrrj.br\/mineraiserochas\/wp-content\/uploads\/sites\/2\/2025\/09\/Rutilo-3-768x768.png 768w, https:\/\/laboratorios.ufrrj.br\/mineraiserochas\/wp-content\/uploads\/sites\/2\/2025\/09\/Rutilo-3-200x200.png 200w, https:\/\/laboratorios.ufrrj.br\/mineraiserochas\/wp-content\/uploads\/sites\/2\/2025\/09\/Rutilo-3-70x70.png 70w, https:\/\/laboratorios.ufrrj.br\/mineraiserochas\/wp-content\/uploads\/sites\/2\/2025\/09\/Rutilo-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\/2015\/04\/rutilo.jpg\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"759\" data-id=\"449\" src=\"https:\/\/laboratorios.ufrrj.br\/mineraiserochas\/wp-content\/uploads\/sites\/2\/2015\/04\/rutilo-1024x759.jpg\" alt=\"\" class=\"wp-image-449\" srcset=\"https:\/\/laboratorios.ufrrj.br\/mineraiserochas\/wp-content\/uploads\/sites\/2\/2015\/04\/rutilo-1024x759.jpg 1024w, https:\/\/laboratorios.ufrrj.br\/mineraiserochas\/wp-content\/uploads\/sites\/2\/2015\/04\/rutilo-300x222.jpg 300w, https:\/\/laboratorios.ufrrj.br\/mineraiserochas\/wp-content\/uploads\/sites\/2\/2015\/04\/rutilo.jpg 1640w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/a><figcaption class=\"wp-element-caption\">Rutilo. Cole\u00e7\u00e3o Simon Bumistrov. UFRRJ<\/figcaption><\/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\/09\/Rutilo.png\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"1024\" data-id=\"2093\" src=\"https:\/\/laboratorios.ufrrj.br\/mineraiserochas\/wp-content\/uploads\/sites\/2\/2025\/09\/Rutilo-1024x1024.png\" alt=\"\" class=\"wp-image-2093\" srcset=\"https:\/\/laboratorios.ufrrj.br\/mineraiserochas\/wp-content\/uploads\/sites\/2\/2025\/09\/Rutilo-1024x1024.png 1024w, https:\/\/laboratorios.ufrrj.br\/mineraiserochas\/wp-content\/uploads\/sites\/2\/2025\/09\/Rutilo-300x300.png 300w, https:\/\/laboratorios.ufrrj.br\/mineraiserochas\/wp-content\/uploads\/sites\/2\/2025\/09\/Rutilo-150x150.png 150w, https:\/\/laboratorios.ufrrj.br\/mineraiserochas\/wp-content\/uploads\/sites\/2\/2025\/09\/Rutilo-768x768.png 768w, https:\/\/laboratorios.ufrrj.br\/mineraiserochas\/wp-content\/uploads\/sites\/2\/2025\/09\/Rutilo-200x200.png 200w, https:\/\/laboratorios.ufrrj.br\/mineraiserochas\/wp-content\/uploads\/sites\/2\/2025\/09\/Rutilo-70x70.png 70w, https:\/\/laboratorios.ufrrj.br\/mineraiserochas\/wp-content\/uploads\/sites\/2\/2025\/09\/Rutilo.png 1440w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/a><\/figure>\n<\/figure>\n","protected":false},"excerpt":{"rendered":"<p>O rutilo TiO\u2082 \u00e9 um \u00f3xido de tit\u00e2nio (IV) do grupo rutilo, cristalizando no sistema tetragonal, formando cristais prism\u00e1ticos alongados, finos e [&hellip;]<\/p>\n","protected":false},"author":9,"featured_media":2093,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[35],"tags":[],"class_list":["post-657","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-oxidos"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v26.8 - 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