{"id":1086,"date":"2025-05-22T16:43:31","date_gmt":"2025-05-22T19:43:31","guid":{"rendered":"https:\/\/laboratorios.ufrrj.br\/mineraiserochas\/?page_id=1086"},"modified":"2025-09-02T14:53:34","modified_gmt":"2025-09-02T17:53:34","slug":"hidroxidos","status":"publish","type":"page","link":"https:\/\/laboratorios.ufrrj.br\/mineraiserochas\/hidroxidos\/","title":{"rendered":"Hidr\u00f3xidos"},"content":{"rendered":"\n<div class=\"secao-minerais\">\n  <div class=\"conteudo-central\">\n    <div class=\"slideshow\">\n      <div class=\"slide\" style=\"background-image: url('https:\/\/laboratorios.ufrrj.br\/mineraiserochas\/wp-content\/uploads\/sites\/2\/2025\/06\/Atacamita.png');\"><\/div>\n      <div class=\"slide\" style=\"background-image: url('https:\/\/laboratorios.ufrrj.br\/mineraiserochas\/wp-content\/uploads\/sites\/2\/2025\/06\/Calcita-Fluorescente-SerraGeral.png');\"><\/div>\n      <div class=\"slide\" style=\"background-image: url('https:\/\/laboratorios.ufrrj.br\/mineraiserochas\/wp-content\/uploads\/sites\/2\/2025\/06\/Esmeralda.png');\"><\/div>\n      <div class=\"slide\" style=\"background-image: url('https:\/\/laboratorios.ufrrj.br\/mineraiserochas\/wp-content\/uploads\/sites\/2\/2025\/06\/Cianita.png');\"><\/div>\n      <div class=\"slide\" style=\"background-image: url('https:\/\/laboratorios.ufrrj.br\/mineraiserochas\/wp-content\/uploads\/sites\/2\/2025\/06\/Turmalina-Melancia.png');\"><\/div>\n      <div class=\"slide\" style=\"background-image: url('https:\/\/laboratorios.ufrrj.br\/mineraiserochas\/wp-content\/uploads\/sites\/2\/2025\/06\/Cobalto.png');\"><\/div>\n    <\/div>\n\n    <div class=\"conteudo\">\n      <h1 style=\"background-color: #ae7136; color: white; display: inline-block; padding: 10px 20px; border-radius: 8px; margin-bottom: 20px;\">\n        O que s\u00e3o Hidr\u00f3xidos?\n      <\/h1>\n      <p><em>Hidr\u00f3xidos s\u00e3o minerais que cont\u00eam o grupo hidroxila (OH\u207b) como parte essencial de sua estrutura qu\u00edmica. Eles geralmente se formam em ambientes de baixa temperatura e est\u00e3o associados a processos de altera\u00e7\u00e3o qu\u00edmica de outros minerais, como em zonas de intemperismo. Um exemplo comum de hidr\u00f3xido \u00e9 a gibbsita (Al(OH)\u2083), que \u00e9 uma das principais fontes de alum\u00ednio. Esses minerais s\u00e3o importantes indicadores de condi\u00e7\u00f5es ambientais e processos geol\u00f3gicos superficiais.<\/em><\/p>\n\n      <div class=\"botoes-categorias\">\n        <a href=\"https:\/\/laboratorios.ufrrj.br\/mineraiserochas\/carbonatos\/\" class=\"botao-categoria\">Carbonatos<\/a>\n        <a href=\"https:\/\/laboratorios.ufrrj.br\/mineraiserochas\/elementos-nativos\/\" class=\"botao-categoria\">Elementos Nativos<\/a>\n        <a href=\"https:\/\/laboratorios.ufrrj.br\/mineraiserochas\/fosfatos\/\" class=\"botao-categoria\">Fosfatos<\/a>\n        <a href=\"https:\/\/laboratorios.ufrrj.br\/mineraiserochas\/haletos\/\" class=\"botao-categoria\">Haletos<\/a>\n        <a href=\"https:\/\/laboratorios.ufrrj.br\/mineraiserochas\/minerios\/\" class=\"botao-categoria\">Min\u00e9rios<\/a>\n        <a href=\"https:\/\/laboratorios.ufrrj.br\/mineraiserochas\/oxidos\/\" class=\"botao-categoria\">\u00d3xidos\/Hidr\u00f3xido<\/a>\n        <a href=\"https:\/\/laboratorios.ufrrj.br\/mineraiserochas\/silicatos\/\" class=\"botao-categoria\">Silicatos<\/a>\n        <a href=\"https:\/\/laboratorios.ufrrj.br\/mineraiserochas\/sulfatos\/\" class=\"botao-categoria\">Sulfatos<\/a>\n        <a href=\"https:\/\/laboratorios.ufrrj.br\/mineraiserochas\/sulfetos\/\" class=\"botao-categoria\">Sulfetos<\/a>\n      <\/div>\n    <\/div>\n  <\/div>\n<\/div>\n\n<style>\n.secao-minerais {\n  width: 100%;\n  text-align: center;\n  color: white;\n  padding: 60px 0;\n}\n\n.conteudo-central {\n  position: relative;\n  max-width: 1200px;\n  margin: 0 auto;\n  padding: 40px 20px;\n  border-radius: 20px;\n  overflow: hidden;\n  background-color: rgba(0, 0, 0, 0.6);\n}\n\n.slideshow {\n  position: absolute;\n  top: 0;\n  left: 0;\n  width: 100%;\n  height: 100%;\n  z-index: 0;\n}\n\n.slide {\n  position: absolute;\n  width: 100%;\n  height: 100%;\n  background-size: cover;\n  background-position: center;\n  opacity: 0;\n  animation: slideShow 30s infinite;\n  transition: opacity 1s ease-in-out;\n}\n\n.slide:nth-child(1) { animation-delay: 0s; }\n.slide:nth-child(2) { animation-delay: 5s; }\n.slide:nth-child(3) { animation-delay: 10s; }\n.slide:nth-child(4) { animation-delay: 15s; }\n.slide:nth-child(5) { animation-delay: 20s; }\n.slide:nth-child(6) { animation-delay: 25s; }\n\n@keyframes slideShow {\n  0% { opacity: 0; }\n  5% { opacity: 1; }\n  15% { opacity: 1; }\n  20% { opacity: 0; }\n  100% { opacity: 0; }\n}\n\n.conteudo {\n  position: relative;\n  z-index: 1;\n}\n\n.botoes-categorias {\n  display: flex;\n  flex-wrap: wrap;\n  justify-content: center;\n  gap: 10px;\n  margin-top: 20px;\n}\n\n.botao-categoria {\n  background-color: #ae7136;\n  color: white;\n  padding: 10px 20px;\n  border-radius: 999px;\n  text-decoration: none;\n  font-weight: bold;\n  transition: background-color 0.3s ease;\n}\n\n.botao-categoria:hover {\n  background-color: #7a4e20;\n}\n<\/style>\n\n\n\n<div class=\"wp-block-query is-layout-flow wp-block-query-is-layout-flow\">\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-9d6595d7 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:100%\"><ul class=\"is-flex-container columns-3 wp-block-post-template is-layout-flow wp-block-post-template-is-layout-flow\"><li class=\"wp-block-post post-2099 post type-post status-publish format-standard has-post-thumbnail hentry category-hidroxidos category-oxidos\">\n<figure class=\"wp-block-post-featured-image\"><a href=\"https:\/\/laboratorios.ufrrj.br\/mineraiserochas\/tantalita-tantalite\/\" target=\"_self\"  ><img loading=\"lazy\" decoding=\"async\" width=\"1440\" height=\"1440\" src=\"https:\/\/laboratorios.ufrrj.br\/mineraiserochas\/wp-content\/uploads\/sites\/2\/2025\/09\/Tantalia.png\" class=\"attachment-post-thumbnail size-post-thumbnail wp-post-image\" alt=\"Tantalita (Tantalite)\" style=\"object-fit:cover;\" srcset=\"https:\/\/laboratorios.ufrrj.br\/mineraiserochas\/wp-content\/uploads\/sites\/2\/2025\/09\/Tantalia.png 1440w, https:\/\/laboratorios.ufrrj.br\/mineraiserochas\/wp-content\/uploads\/sites\/2\/2025\/09\/Tantalia-300x300.png 300w, https:\/\/laboratorios.ufrrj.br\/mineraiserochas\/wp-content\/uploads\/sites\/2\/2025\/09\/Tantalia-1024x1024.png 1024w, https:\/\/laboratorios.ufrrj.br\/mineraiserochas\/wp-content\/uploads\/sites\/2\/2025\/09\/Tantalia-150x150.png 150w, https:\/\/laboratorios.ufrrj.br\/mineraiserochas\/wp-content\/uploads\/sites\/2\/2025\/09\/Tantalia-768x768.png 768w, https:\/\/laboratorios.ufrrj.br\/mineraiserochas\/wp-content\/uploads\/sites\/2\/2025\/09\/Tantalia-200x200.png 200w, https:\/\/laboratorios.ufrrj.br\/mineraiserochas\/wp-content\/uploads\/sites\/2\/2025\/09\/Tantalia-70x70.png 70w\" sizes=\"auto, (max-width: 1440px) 100vw, 1440px\" \/><\/a><\/figure>\n\n<h2 class=\"wp-block-post-title\"><a href=\"https:\/\/laboratorios.ufrrj.br\/mineraiserochas\/tantalita-tantalite\/\" target=\"_self\" >Tantalita (Tantalite)<\/a><\/h2>\n<\/li><li class=\"wp-block-post post-2084 post type-post status-publish format-standard has-post-thumbnail hentry category-hidroxidos category-oxidos\">\n<figure class=\"wp-block-post-featured-image\"><a href=\"https:\/\/laboratorios.ufrrj.br\/mineraiserochas\/psilomelano\/\" target=\"_self\"  ><img loading=\"lazy\" decoding=\"async\" width=\"1440\" height=\"1440\" src=\"https:\/\/laboratorios.ufrrj.br\/mineraiserochas\/wp-content\/uploads\/sites\/2\/2025\/09\/Psilomeno-2.png\" class=\"attachment-post-thumbnail size-post-thumbnail wp-post-image\" alt=\"Psilomelano\" style=\"object-fit:cover;\" srcset=\"https:\/\/laboratorios.ufrrj.br\/mineraiserochas\/wp-content\/uploads\/sites\/2\/2025\/09\/Psilomeno-2.png 1440w, https:\/\/laboratorios.ufrrj.br\/mineraiserochas\/wp-content\/uploads\/sites\/2\/2025\/09\/Psilomeno-2-300x300.png 300w, https:\/\/laboratorios.ufrrj.br\/mineraiserochas\/wp-content\/uploads\/sites\/2\/2025\/09\/Psilomeno-2-1024x1024.png 1024w, https:\/\/laboratorios.ufrrj.br\/mineraiserochas\/wp-content\/uploads\/sites\/2\/2025\/09\/Psilomeno-2-150x150.png 150w, https:\/\/laboratorios.ufrrj.br\/mineraiserochas\/wp-content\/uploads\/sites\/2\/2025\/09\/Psilomeno-2-768x768.png 768w, https:\/\/laboratorios.ufrrj.br\/mineraiserochas\/wp-content\/uploads\/sites\/2\/2025\/09\/Psilomeno-2-200x200.png 200w, https:\/\/laboratorios.ufrrj.br\/mineraiserochas\/wp-content\/uploads\/sites\/2\/2025\/09\/Psilomeno-2-70x70.png 70w\" sizes=\"auto, (max-width: 1440px) 100vw, 1440px\" \/><\/a><\/figure>\n\n<h2 class=\"wp-block-post-title\"><a href=\"https:\/\/laboratorios.ufrrj.br\/mineraiserochas\/psilomelano\/\" target=\"_self\" >Psilomelano<\/a><\/h2>\n<\/li><li class=\"wp-block-post post-1950 post type-post status-publish format-standard has-post-thumbnail hentry category-hidroxidos category-oxidos\">\n<figure class=\"wp-block-post-featured-image\"><a href=\"https:\/\/laboratorios.ufrrj.br\/mineraiserochas\/columbita-columbite\/\" target=\"_self\"  ><img loading=\"lazy\" decoding=\"async\" width=\"1440\" height=\"1440\" src=\"https:\/\/laboratorios.ufrrj.br\/mineraiserochas\/wp-content\/uploads\/sites\/2\/2025\/08\/Columbita.png\" class=\"attachment-post-thumbnail size-post-thumbnail wp-post-image\" alt=\"Columbita (Columbite)\" style=\"object-fit:cover;\" srcset=\"https:\/\/laboratorios.ufrrj.br\/mineraiserochas\/wp-content\/uploads\/sites\/2\/2025\/08\/Columbita.png 1440w, https:\/\/laboratorios.ufrrj.br\/mineraiserochas\/wp-content\/uploads\/sites\/2\/2025\/08\/Columbita-300x300.png 300w, https:\/\/laboratorios.ufrrj.br\/mineraiserochas\/wp-content\/uploads\/sites\/2\/2025\/08\/Columbita-1024x1024.png 1024w, https:\/\/laboratorios.ufrrj.br\/mineraiserochas\/wp-content\/uploads\/sites\/2\/2025\/08\/Columbita-150x150.png 150w, https:\/\/laboratorios.ufrrj.br\/mineraiserochas\/wp-content\/uploads\/sites\/2\/2025\/08\/Columbita-768x768.png 768w, https:\/\/laboratorios.ufrrj.br\/mineraiserochas\/wp-content\/uploads\/sites\/2\/2025\/08\/Columbita-200x200.png 200w, https:\/\/laboratorios.ufrrj.br\/mineraiserochas\/wp-content\/uploads\/sites\/2\/2025\/08\/Columbita-70x70.png 70w\" sizes=\"auto, (max-width: 1440px) 100vw, 1440px\" \/><\/a><\/figure>\n\n<h2 class=\"wp-block-post-title\"><a href=\"https:\/\/laboratorios.ufrrj.br\/mineraiserochas\/columbita-columbite\/\" target=\"_self\" >Columbita (Columbite)<\/a><\/h2>\n<\/li><li class=\"wp-block-post post-1946 post type-post status-publish format-standard has-post-thumbnail hentry category-hidroxidos category-oxidos\">\n<figure class=\"wp-block-post-featured-image\"><a href=\"https:\/\/laboratorios.ufrrj.br\/mineraiserochas\/cassiterita-cassiterite\/\" target=\"_self\"  ><img loading=\"lazy\" decoding=\"async\" width=\"1440\" height=\"1440\" src=\"https:\/\/laboratorios.ufrrj.br\/mineraiserochas\/wp-content\/uploads\/sites\/2\/2025\/08\/Cassiterita-2.png\" class=\"attachment-post-thumbnail size-post-thumbnail wp-post-image\" alt=\"Cassiterita (Cassiterite)\" style=\"object-fit:cover;\" srcset=\"https:\/\/laboratorios.ufrrj.br\/mineraiserochas\/wp-content\/uploads\/sites\/2\/2025\/08\/Cassiterita-2.png 1440w, https:\/\/laboratorios.ufrrj.br\/mineraiserochas\/wp-content\/uploads\/sites\/2\/2025\/08\/Cassiterita-2-300x300.png 300w, https:\/\/laboratorios.ufrrj.br\/mineraiserochas\/wp-content\/uploads\/sites\/2\/2025\/08\/Cassiterita-2-1024x1024.png 1024w, https:\/\/laboratorios.ufrrj.br\/mineraiserochas\/wp-content\/uploads\/sites\/2\/2025\/08\/Cassiterita-2-150x150.png 150w, https:\/\/laboratorios.ufrrj.br\/mineraiserochas\/wp-content\/uploads\/sites\/2\/2025\/08\/Cassiterita-2-768x768.png 768w, https:\/\/laboratorios.ufrrj.br\/mineraiserochas\/wp-content\/uploads\/sites\/2\/2025\/08\/Cassiterita-2-200x200.png 200w, https:\/\/laboratorios.ufrrj.br\/mineraiserochas\/wp-content\/uploads\/sites\/2\/2025\/08\/Cassiterita-2-70x70.png 70w\" sizes=\"auto, (max-width: 1440px) 100vw, 1440px\" \/><\/a><\/figure>\n\n<h2 class=\"wp-block-post-title\"><a href=\"https:\/\/laboratorios.ufrrj.br\/mineraiserochas\/cassiterita-cassiterite\/\" target=\"_self\" >Cassiterita (Cassiterite)<\/a><\/h2>\n<\/li><li class=\"wp-block-post post-1941 post type-post status-publish format-standard has-post-thumbnail hentry category-hidroxidos category-oxidos\">\n<figure class=\"wp-block-post-featured-image\"><a href=\"https:\/\/laboratorios.ufrrj.br\/mineraiserochas\/calamita\/\" target=\"_self\"  ><img loading=\"lazy\" decoding=\"async\" width=\"1440\" height=\"1440\" src=\"https:\/\/laboratorios.ufrrj.br\/mineraiserochas\/wp-content\/uploads\/sites\/2\/2025\/08\/Calamita-1.png\" class=\"attachment-post-thumbnail size-post-thumbnail wp-post-image\" alt=\"Calamita\" style=\"object-fit:cover;\" srcset=\"https:\/\/laboratorios.ufrrj.br\/mineraiserochas\/wp-content\/uploads\/sites\/2\/2025\/08\/Calamita-1.png 1440w, https:\/\/laboratorios.ufrrj.br\/mineraiserochas\/wp-content\/uploads\/sites\/2\/2025\/08\/Calamita-1-300x300.png 300w, https:\/\/laboratorios.ufrrj.br\/mineraiserochas\/wp-content\/uploads\/sites\/2\/2025\/08\/Calamita-1-1024x1024.png 1024w, https:\/\/laboratorios.ufrrj.br\/mineraiserochas\/wp-content\/uploads\/sites\/2\/2025\/08\/Calamita-1-150x150.png 150w, https:\/\/laboratorios.ufrrj.br\/mineraiserochas\/wp-content\/uploads\/sites\/2\/2025\/08\/Calamita-1-768x768.png 768w, https:\/\/laboratorios.ufrrj.br\/mineraiserochas\/wp-content\/uploads\/sites\/2\/2025\/08\/Calamita-1-200x200.png 200w, https:\/\/laboratorios.ufrrj.br\/mineraiserochas\/wp-content\/uploads\/sites\/2\/2025\/08\/Calamita-1-70x70.png 70w\" sizes=\"auto, (max-width: 1440px) 100vw, 1440px\" \/><\/a><\/figure>\n\n<h2 class=\"wp-block-post-title\"><a href=\"https:\/\/laboratorios.ufrrj.br\/mineraiserochas\/calamita\/\" target=\"_self\" >Calamita<\/a><\/h2>\n<\/li><li class=\"wp-block-post post-684 post type-post status-publish format-standard has-post-thumbnail hentry category-hidroxidos\">\n<figure class=\"wp-block-post-featured-image\"><a href=\"https:\/\/laboratorios.ufrrj.br\/mineraiserochas\/goethita\/\" target=\"_self\"  ><img loading=\"lazy\" decoding=\"async\" width=\"1736\" height=\"1232\" src=\"https:\/\/laboratorios.ufrrj.br\/mineraiserochas\/wp-content\/uploads\/sites\/2\/2015\/01\/goetita.jpg\" class=\"attachment-post-thumbnail size-post-thumbnail wp-post-image\" alt=\"Goethita\" style=\"object-fit:cover;\" srcset=\"https:\/\/laboratorios.ufrrj.br\/mineraiserochas\/wp-content\/uploads\/sites\/2\/2015\/01\/goetita.jpg 1736w, https:\/\/laboratorios.ufrrj.br\/mineraiserochas\/wp-content\/uploads\/sites\/2\/2015\/01\/goetita-300x212.jpg 300w, https:\/\/laboratorios.ufrrj.br\/mineraiserochas\/wp-content\/uploads\/sites\/2\/2015\/01\/goetita-1024x726.jpg 1024w\" sizes=\"auto, (max-width: 1736px) 100vw, 1736px\" \/><\/a><\/figure>\n\n<h2 class=\"wp-block-post-title\"><a href=\"https:\/\/laboratorios.ufrrj.br\/mineraiserochas\/goethita\/\" target=\"_self\" >Goethita<\/a><\/h2>\n<\/li><li class=\"wp-block-post post-680 post type-post status-publish format-standard has-post-thumbnail hentry category-hidroxidos category-oxidos\">\n<figure class=\"wp-block-post-featured-image\"><a href=\"https:\/\/laboratorios.ufrrj.br\/mineraiserochas\/hematita\/\" target=\"_self\"  ><img loading=\"lazy\" decoding=\"async\" width=\"1440\" height=\"1440\" src=\"https:\/\/laboratorios.ufrrj.br\/mineraiserochas\/wp-content\/uploads\/sites\/2\/2025\/09\/Hematita.png\" class=\"attachment-post-thumbnail size-post-thumbnail wp-post-image\" alt=\"Hematita (Hematite)\" style=\"object-fit:cover;\" srcset=\"https:\/\/laboratorios.ufrrj.br\/mineraiserochas\/wp-content\/uploads\/sites\/2\/2025\/09\/Hematita.png 1440w, https:\/\/laboratorios.ufrrj.br\/mineraiserochas\/wp-content\/uploads\/sites\/2\/2025\/09\/Hematita-300x300.png 300w, https:\/\/laboratorios.ufrrj.br\/mineraiserochas\/wp-content\/uploads\/sites\/2\/2025\/09\/Hematita-1024x1024.png 1024w, https:\/\/laboratorios.ufrrj.br\/mineraiserochas\/wp-content\/uploads\/sites\/2\/2025\/09\/Hematita-150x150.png 150w, https:\/\/laboratorios.ufrrj.br\/mineraiserochas\/wp-content\/uploads\/sites\/2\/2025\/09\/Hematita-768x768.png 768w, https:\/\/laboratorios.ufrrj.br\/mineraiserochas\/wp-content\/uploads\/sites\/2\/2025\/09\/Hematita-200x200.png 200w, https:\/\/laboratorios.ufrrj.br\/mineraiserochas\/wp-content\/uploads\/sites\/2\/2025\/09\/Hematita-70x70.png 70w\" sizes=\"auto, (max-width: 1440px) 100vw, 1440px\" \/><\/a><\/figure>\n\n<h2 class=\"wp-block-post-title\"><a href=\"https:\/\/laboratorios.ufrrj.br\/mineraiserochas\/hematita\/\" target=\"_self\" >Hematita (Hematite)<\/a><\/h2>\n<\/li><li class=\"wp-block-post post-676 post type-post status-publish format-standard has-post-thumbnail hentry category-hidroxidos category-oxidos\">\n<figure class=\"wp-block-post-featured-image\"><a href=\"https:\/\/laboratorios.ufrrj.br\/mineraiserochas\/magnetita\/\" target=\"_self\"  ><img loading=\"lazy\" decoding=\"async\" width=\"1440\" height=\"1440\" src=\"https:\/\/laboratorios.ufrrj.br\/mineraiserochas\/wp-content\/uploads\/sites\/2\/2025\/09\/Magnetita-2.png\" class=\"attachment-post-thumbnail size-post-thumbnail wp-post-image\" alt=\"Magnetita (Magnetite)\" style=\"object-fit:cover;\" srcset=\"https:\/\/laboratorios.ufrrj.br\/mineraiserochas\/wp-content\/uploads\/sites\/2\/2025\/09\/Magnetita-2.png 1440w, https:\/\/laboratorios.ufrrj.br\/mineraiserochas\/wp-content\/uploads\/sites\/2\/2025\/09\/Magnetita-2-300x300.png 300w, https:\/\/laboratorios.ufrrj.br\/mineraiserochas\/wp-content\/uploads\/sites\/2\/2025\/09\/Magnetita-2-1024x1024.png 1024w, https:\/\/laboratorios.ufrrj.br\/mineraiserochas\/wp-content\/uploads\/sites\/2\/2025\/09\/Magnetita-2-150x150.png 150w, https:\/\/laboratorios.ufrrj.br\/mineraiserochas\/wp-content\/uploads\/sites\/2\/2025\/09\/Magnetita-2-768x768.png 768w, https:\/\/laboratorios.ufrrj.br\/mineraiserochas\/wp-content\/uploads\/sites\/2\/2025\/09\/Magnetita-2-200x200.png 200w, https:\/\/laboratorios.ufrrj.br\/mineraiserochas\/wp-content\/uploads\/sites\/2\/2025\/09\/Magnetita-2-70x70.png 70w\" sizes=\"auto, (max-width: 1440px) 100vw, 1440px\" \/><\/a><\/figure>\n\n<h2 class=\"wp-block-post-title\"><a href=\"https:\/\/laboratorios.ufrrj.br\/mineraiserochas\/magnetita\/\" target=\"_self\" >Magnetita (Magnetite)<\/a><\/h2>\n<\/li><\/ul><\/div>\n<\/div>\n\n\n\n\n<\/div>\n\n\n\n<style>\r\n.wp-block-post-template.is-flex-container li {\r\n        border-top: solid 1px #F4F4F4;\r\n       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Hidr\u00f3xidos s\u00e3o minerais que cont\u00eam o grupo hidroxila (OH\u207b) como parte essencial de sua estrutura qu\u00edmica. 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