{"id":2140,"date":"2026-05-08T15:35:27","date_gmt":"2026-05-08T18:35:27","guid":{"rendered":"https:\/\/laboratorios.ufrrj.br\/mineraiserochas\/?p=2140"},"modified":"2026-05-08T15:35:29","modified_gmt":"2026-05-08T18:35:29","slug":"albita-albite","status":"publish","type":"post","link":"https:\/\/laboratorios.ufrrj.br\/mineraiserochas\/albita-albite\/","title":{"rendered":"Albita (Albite)"},"content":{"rendered":"\n<p class=\"has-black-color has-text-color has-link-color has-medium-font-size wp-elements-5407e1181f73cc67a22cbba49002228a\">A albita (NaAlSi\u2083O\u2088) \u00e9 um aluminossilicato de s\u00f3dio do grupo dos feldspatos plagiocl\u00e1sios, cristalizando no sistema tricl\u00ednico e formando cristais tabulares, prism\u00e1ticos ou lamelares, al\u00e9m de massas granulares e compactas. Apresenta cor branca, incolor, cinza, rosada ou azul-clara, brilho v\u00edtreo a nacarado, dureza 6\u20136,5, densidade relativa 2,60\u20132,65, fratura irregular a subconchoidal e clivagem perfeita em duas dire\u00e7\u00f5es. \u00c9 comum em rochas \u00edgneas f\u00e9lsicas, pegmatitos, rochas metam\u00f3rficas e veios hidrotermais, muitas vezes associada a quartzo, mica, turmalina e berilo. \u00c9 utilizada nas ind\u00fastrias de cer\u00e2mica, vidro, esmaltes e abrasivos, al\u00e9m de ser importante em estudos petrol\u00f3gicos. Algumas variedades transl\u00facidas podem ser usadas como gemas ornamentais. Ocorre no Brasil (Minas Gerais, Bahia), Su\u00ed\u00e7a, Noruega, Estados Unidos, Canad\u00e1 e Madagascar.<\/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>Silicatos<\/li>\n      <\/ul>\n    <\/td>\n  <\/tr>\n  <tr>\n    <td>Grupo<\/td>\n    <td>\n      <ul class=\"custom-square\">\n        <li>Tectossilicatos (feldspatos \u2013 plagiocl\u00e1sios)<\/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>NaAlSi\u2083O\u2088 \u2013 aluminossilicato de s\u00f3dio<\/li>\n      <\/ul>\n    <\/td>\n  <\/tr>\n  <tr>\n    <td>Sistema Cristalino<\/td>\n    <td>\n      <ul class=\"custom-square\">\n        <li>Tricl\u00ednico<\/li>\n      <\/ul>\n    <\/td>\n  <\/tr>\n  <tr>\n    <td>H\u00e1bito<\/td>\n    <td>\n      <ul class=\"custom-square\">\n        <li>Cristais tabulares, prism\u00e1ticos ou lamelares<\/li>\n        <li>Tamb\u00e9m em massas granulares, compactas ou 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>Branco, incolor, cinza, rosado, azul-claro<\/li>\n        <li>\u00c0s vezes esverdeado<\/li>\n      <\/ul>\n    <\/td>\n  <\/tr>\n  <tr>\n    <td>Brilho<\/td>\n    <td>\n      <ul class=\"custom-square\">\n        <li>V\u00edtreo a nacarado nas superf\u00edcies de clivagem<\/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>2,60 \u2013 2,65<\/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 aproximadamente a 86\u00b0 e 94\u00b0<\/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    A albita \u00e9 um feldspato s\u00f3dico comum em rochas \u00edgneas f\u00e9lsicas, como granitos, pegmatitos e sienitos, al\u00e9m de rochas metam\u00f3rficas e veios hidrotermais. \u00c9 frequente em pegmatitos gran\u00edticos, associada a quartzo, mica, turmalina e berilo. Tamb\u00e9m pode formar-se por altera\u00e7\u00e3o de outros feldspatos (albitiza\u00e7\u00e3o).\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 Utilizada nas ind\u00fastrias de cer\u00e2mica, porcelana, vidro, esmaltes e abrasivos, como fonte de s\u00f3dio e alumina.<\/li>\n  <li><strong>Cient\u00edfico<\/strong> \u2013 Importante em petrologia \u00edgnea e metam\u00f3rfica, especialmente no estudo da s\u00e9rie dos plagiocl\u00e1sios e processos de altera\u00e7\u00e3o hidrotermal.<\/li>\n  <li><strong>Gemol\u00f3gico<\/strong> \u2013 Algumas variedades transl\u00facidas e com efeitos \u00f3pticos (como peristerita) podem ser lapidadas como gemas ornamentais.<\/li>\n  <li><strong>Outros<\/strong> \u2013 Bastante apreciada em cole\u00e7\u00f5es mineral\u00f3gicas, especialmente em cristais bem formados de pegmatitos.<\/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 (Ara\u00e7ua\u00ed, Itinga, Galil\u00e9ia), Bahia<\/li>\n  <li><strong>Su\u00ed\u00e7a<\/strong> \u2013 Alpes (cristais alpinos)<\/li>\n  <li><strong>Noruega<\/strong> \u2013 Pegmatitos escandinavos<\/li>\n  <li><strong>Estados Unidos<\/strong> \u2013 Colorado, Calif\u00f3rnia, Maine<\/li>\n  <li><strong>Canad\u00e1<\/strong> \u2013 Ont\u00e1rio, Quebec<\/li>\n  <li><strong>Madagascar<\/strong> \u2013 Pegmatitos ricos em feldspatos<\/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\/2026\/05\/Albita-2.png\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"1024\" data-id=\"2145\" src=\"https:\/\/laboratorios.ufrrj.br\/mineraiserochas\/wp-content\/uploads\/sites\/2\/2026\/05\/Albita-2-1024x1024.png\" alt=\"\" class=\"wp-image-2145\" srcset=\"https:\/\/laboratorios.ufrrj.br\/mineraiserochas\/wp-content\/uploads\/sites\/2\/2026\/05\/Albita-2-1024x1024.png 1024w, https:\/\/laboratorios.ufrrj.br\/mineraiserochas\/wp-content\/uploads\/sites\/2\/2026\/05\/Albita-2-300x300.png 300w, https:\/\/laboratorios.ufrrj.br\/mineraiserochas\/wp-content\/uploads\/sites\/2\/2026\/05\/Albita-2-150x150.png 150w, https:\/\/laboratorios.ufrrj.br\/mineraiserochas\/wp-content\/uploads\/sites\/2\/2026\/05\/Albita-2-768x768.png 768w, https:\/\/laboratorios.ufrrj.br\/mineraiserochas\/wp-content\/uploads\/sites\/2\/2026\/05\/Albita-2-200x200.png 200w, https:\/\/laboratorios.ufrrj.br\/mineraiserochas\/wp-content\/uploads\/sites\/2\/2026\/05\/Albita-2-70x70.png 70w, https:\/\/laboratorios.ufrrj.br\/mineraiserochas\/wp-content\/uploads\/sites\/2\/2026\/05\/Albita-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\/2026\/05\/Albita-3.png\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"1024\" data-id=\"2143\" src=\"https:\/\/laboratorios.ufrrj.br\/mineraiserochas\/wp-content\/uploads\/sites\/2\/2026\/05\/Albita-3-1024x1024.png\" alt=\"\" class=\"wp-image-2143\" srcset=\"https:\/\/laboratorios.ufrrj.br\/mineraiserochas\/wp-content\/uploads\/sites\/2\/2026\/05\/Albita-3-1024x1024.png 1024w, https:\/\/laboratorios.ufrrj.br\/mineraiserochas\/wp-content\/uploads\/sites\/2\/2026\/05\/Albita-3-300x300.png 300w, https:\/\/laboratorios.ufrrj.br\/mineraiserochas\/wp-content\/uploads\/sites\/2\/2026\/05\/Albita-3-150x150.png 150w, https:\/\/laboratorios.ufrrj.br\/mineraiserochas\/wp-content\/uploads\/sites\/2\/2026\/05\/Albita-3-768x768.png 768w, https:\/\/laboratorios.ufrrj.br\/mineraiserochas\/wp-content\/uploads\/sites\/2\/2026\/05\/Albita-3-200x200.png 200w, https:\/\/laboratorios.ufrrj.br\/mineraiserochas\/wp-content\/uploads\/sites\/2\/2026\/05\/Albita-3-70x70.png 70w, https:\/\/laboratorios.ufrrj.br\/mineraiserochas\/wp-content\/uploads\/sites\/2\/2026\/05\/Albita-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\/2026\/05\/Albita-4.png\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"1024\" data-id=\"2141\" src=\"https:\/\/laboratorios.ufrrj.br\/mineraiserochas\/wp-content\/uploads\/sites\/2\/2026\/05\/Albita-4-1024x1024.png\" alt=\"\" class=\"wp-image-2141\" srcset=\"https:\/\/laboratorios.ufrrj.br\/mineraiserochas\/wp-content\/uploads\/sites\/2\/2026\/05\/Albita-4-1024x1024.png 1024w, https:\/\/laboratorios.ufrrj.br\/mineraiserochas\/wp-content\/uploads\/sites\/2\/2026\/05\/Albita-4-300x300.png 300w, https:\/\/laboratorios.ufrrj.br\/mineraiserochas\/wp-content\/uploads\/sites\/2\/2026\/05\/Albita-4-150x150.png 150w, https:\/\/laboratorios.ufrrj.br\/mineraiserochas\/wp-content\/uploads\/sites\/2\/2026\/05\/Albita-4-768x768.png 768w, https:\/\/laboratorios.ufrrj.br\/mineraiserochas\/wp-content\/uploads\/sites\/2\/2026\/05\/Albita-4-200x200.png 200w, https:\/\/laboratorios.ufrrj.br\/mineraiserochas\/wp-content\/uploads\/sites\/2\/2026\/05\/Albita-4-70x70.png 70w, https:\/\/laboratorios.ufrrj.br\/mineraiserochas\/wp-content\/uploads\/sites\/2\/2026\/05\/Albita-4.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\/2026\/05\/Albita-com-Biotita.png\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"1024\" data-id=\"2146\" src=\"https:\/\/laboratorios.ufrrj.br\/mineraiserochas\/wp-content\/uploads\/sites\/2\/2026\/05\/Albita-com-Biotita-1024x1024.png\" alt=\"\" class=\"wp-image-2146\" srcset=\"https:\/\/laboratorios.ufrrj.br\/mineraiserochas\/wp-content\/uploads\/sites\/2\/2026\/05\/Albita-com-Biotita-1024x1024.png 1024w, https:\/\/laboratorios.ufrrj.br\/mineraiserochas\/wp-content\/uploads\/sites\/2\/2026\/05\/Albita-com-Biotita-300x300.png 300w, https:\/\/laboratorios.ufrrj.br\/mineraiserochas\/wp-content\/uploads\/sites\/2\/2026\/05\/Albita-com-Biotita-150x150.png 150w, https:\/\/laboratorios.ufrrj.br\/mineraiserochas\/wp-content\/uploads\/sites\/2\/2026\/05\/Albita-com-Biotita-768x768.png 768w, https:\/\/laboratorios.ufrrj.br\/mineraiserochas\/wp-content\/uploads\/sites\/2\/2026\/05\/Albita-com-Biotita-200x200.png 200w, https:\/\/laboratorios.ufrrj.br\/mineraiserochas\/wp-content\/uploads\/sites\/2\/2026\/05\/Albita-com-Biotita-70x70.png 70w, https:\/\/laboratorios.ufrrj.br\/mineraiserochas\/wp-content\/uploads\/sites\/2\/2026\/05\/Albita-com-Biotita.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\/2026\/05\/Albita-com-Moscovita.png\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"1024\" data-id=\"2142\" src=\"https:\/\/laboratorios.ufrrj.br\/mineraiserochas\/wp-content\/uploads\/sites\/2\/2026\/05\/Albita-com-Moscovita-1024x1024.png\" alt=\"\" class=\"wp-image-2142\" srcset=\"https:\/\/laboratorios.ufrrj.br\/mineraiserochas\/wp-content\/uploads\/sites\/2\/2026\/05\/Albita-com-Moscovita-1024x1024.png 1024w, https:\/\/laboratorios.ufrrj.br\/mineraiserochas\/wp-content\/uploads\/sites\/2\/2026\/05\/Albita-com-Moscovita-300x300.png 300w, https:\/\/laboratorios.ufrrj.br\/mineraiserochas\/wp-content\/uploads\/sites\/2\/2026\/05\/Albita-com-Moscovita-150x150.png 150w, https:\/\/laboratorios.ufrrj.br\/mineraiserochas\/wp-content\/uploads\/sites\/2\/2026\/05\/Albita-com-Moscovita-768x768.png 768w, https:\/\/laboratorios.ufrrj.br\/mineraiserochas\/wp-content\/uploads\/sites\/2\/2026\/05\/Albita-com-Moscovita-200x200.png 200w, https:\/\/laboratorios.ufrrj.br\/mineraiserochas\/wp-content\/uploads\/sites\/2\/2026\/05\/Albita-com-Moscovita-70x70.png 70w, https:\/\/laboratorios.ufrrj.br\/mineraiserochas\/wp-content\/uploads\/sites\/2\/2026\/05\/Albita-com-Moscovita.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\/2026\/05\/Albita.png\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"1024\" data-id=\"2144\" src=\"https:\/\/laboratorios.ufrrj.br\/mineraiserochas\/wp-content\/uploads\/sites\/2\/2026\/05\/Albita-1024x1024.png\" alt=\"\" class=\"wp-image-2144\" srcset=\"https:\/\/laboratorios.ufrrj.br\/mineraiserochas\/wp-content\/uploads\/sites\/2\/2026\/05\/Albita-1024x1024.png 1024w, https:\/\/laboratorios.ufrrj.br\/mineraiserochas\/wp-content\/uploads\/sites\/2\/2026\/05\/Albita-300x300.png 300w, https:\/\/laboratorios.ufrrj.br\/mineraiserochas\/wp-content\/uploads\/sites\/2\/2026\/05\/Albita-150x150.png 150w, https:\/\/laboratorios.ufrrj.br\/mineraiserochas\/wp-content\/uploads\/sites\/2\/2026\/05\/Albita-768x768.png 768w, https:\/\/laboratorios.ufrrj.br\/mineraiserochas\/wp-content\/uploads\/sites\/2\/2026\/05\/Albita-200x200.png 200w, https:\/\/laboratorios.ufrrj.br\/mineraiserochas\/wp-content\/uploads\/sites\/2\/2026\/05\/Albita-70x70.png 70w, https:\/\/laboratorios.ufrrj.br\/mineraiserochas\/wp-content\/uploads\/sites\/2\/2026\/05\/Albita.png 1440w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/a><\/figure>\n<\/figure>\n","protected":false},"excerpt":{"rendered":"<p>A albita (NaAlSi\u2083O\u2088) \u00e9 um aluminossilicato de s\u00f3dio do grupo dos feldspatos plagiocl\u00e1sios, cristalizando no sistema tricl\u00ednico e formando cristais tabulares, prism\u00e1ticos [&hellip;]<\/p>\n","protected":false},"author":2,"featured_media":2144,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[43],"tags":[],"class_list":["post-2140","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-tectossilicatos"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v26.8 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Albita (Albite) - 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\/albita-albite\/\" \/>\n<meta property=\"og:locale\" content=\"pt_BR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Albita (Albite) - Museu de Rochas e Minerais\" \/>\n<meta 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