{"id":619,"date":"2026-03-21T18:40:20","date_gmt":"2026-03-21T18:40:20","guid":{"rendered":"https:\/\/minevindel.com\/?page_id=619"},"modified":"2026-03-21T18:40:20","modified_gmt":"2026-03-21T18:40:20","slug":"tema-8","status":"publish","type":"page","link":"http:\/\/minevindel.com\/index.php\/tema-8\/","title":{"rendered":"Tema 8"},"content":{"rendered":"\n<p><\/p>\n\n\n\n<p><strong>8. NESOSILICATOS<\/strong>\n<\/p>\n\n\n\n<p><strong>OLIVINO<\/strong>\n<\/p>\n\n\n\n<p>\n  F\u00f3rmula: (MgFe)<sub>2<\/sub>SiO<sub>4<\/sub>\n<\/p>\n\n\n\n<p>\n  Sistema cristalino: R\u00f3mbico.\n<\/p>\n\n\n\n<p>\n  Forma y h\u00e1bito: Los cristales, son por regular 3 prismas, 3 pinacoides y 1 bipir\u00e1mide. Se presenta en granos como incrustaciones o en masas granulares. \n<\/p>\n\n\n\n<p><strong>Propiedades f\u00edsicas: <\/strong>\n<\/p>\n\n\n\n<p>\n  Color: Verde oliva.\n<\/p>\n\n\n\n<p>\n  Exfoliaci\u00f3n: Pobres en {010} y {110}. Poco perceptibles.\n<\/p>\n\n\n\n<p>\n  Fractura concoidea.\n<\/p>\n\n\n\n<p>\n  Raya: Blanca.\n<\/p>\n\n\n\n<p>\n  Brillo: V\u00edtreo.\n<\/p>\n\n\n\n<p>\n  Dureza: <strong>H <\/strong>6,5 &#8211; 7\n<\/p>\n\n\n\n<p>\n  Peso espec\u00edfico: <strong>G <\/strong>3,27 \u2013 4,37 g\/cm<sup>3<\/sup>\n<\/p>\n\n\n\n<p><strong>Composici\u00f3n: <\/strong>Se encuentra una serie completa, que va desde la Forsterita (SiO<sub>4<\/sub>)Mg<sub>2 <\/sub>hasta la Fayalita (SiO<sub>4<\/sub>)Fe<sub>2<\/sub>. Los olivinos m\u00e1s corrientes son m\u00e1s ricos en Mg.\n<\/p>\n\n\n\n<figure class=\"wp-block-image\"><img loading=\"lazy\" decoding=\"async\" width=\"1299\" height=\"974\" src=\"http:\/\/minevindel.com\/wp-content\/uploads\/2026\/03\/g-2_fotos-fuerteventura-dsc02972-jpg.jpeg\" alt=\"G:\\2_FOTOS\\FUERTEVENTURA\\DSC02972.JPG\" class=\"wp-image-968\" srcset=\"http:\/\/minevindel.com\/wp-content\/uploads\/2026\/03\/g-2_fotos-fuerteventura-dsc02972-jpg.jpeg 1299w, http:\/\/minevindel.com\/wp-content\/uploads\/2026\/03\/g-2_fotos-fuerteventura-dsc02972-jpg-300x225.jpeg 300w, http:\/\/minevindel.com\/wp-content\/uploads\/2026\/03\/g-2_fotos-fuerteventura-dsc02972-jpg-1024x768.jpeg 1024w, http:\/\/minevindel.com\/wp-content\/uploads\/2026\/03\/g-2_fotos-fuerteventura-dsc02972-jpg-768x576.jpeg 768w\" sizes=\"auto, (max-width: 1299px) 100vw, 1299px\" \/><\/figure>\n\n\n\n<p><\/p>\n\n\n\n<p>\n  Olivino. Verde oliva. Incrustaci\u00f3n en roca magm\u00e1tica de la erupci\u00f3n del Parque Nacional de Timanfaya, Lanzarote, Canarias. Foto E. Vindel.\n<\/p>\n\n\n\n<figure class=\"wp-block-image\"><img loading=\"lazy\" decoding=\"async\" width=\"800\" height=\"600\" src=\"http:\/\/minevindel.com\/wp-content\/uploads\/2026\/03\/g-2_fotos-fotos-de-geologia-geoimagenes-miguel-an.jpeg\" alt=\"G:\\2_FOTOS\\FOTOS DE GEOLOGIA\\GEOIMAGENES MIGUEL ANGEL\\DSC02988N.jpg\" class=\"wp-image-969\" srcset=\"http:\/\/minevindel.com\/wp-content\/uploads\/2026\/03\/g-2_fotos-fotos-de-geologia-geoimagenes-miguel-an.jpeg 800w, http:\/\/minevindel.com\/wp-content\/uploads\/2026\/03\/g-2_fotos-fotos-de-geologia-geoimagenes-miguel-an-300x225.jpeg 300w, http:\/\/minevindel.com\/wp-content\/uploads\/2026\/03\/g-2_fotos-fotos-de-geologia-geoimagenes-miguel-an-768x576.jpeg 768w\" sizes=\"auto, (max-width: 800px) 100vw, 800px\" \/><\/figure>\n\n\n\n<p><\/p>\n\n\n\n<p>\n  Olivino. Verde oliva. Incrustaciones en roca magm\u00e1tica de la erupci\u00f3n del Parque Nacional de Timanfaya, Lanzarote, Canarias. Foto E. Vindel.\n<\/p>\n\n\n\n<figure class=\"wp-block-image\"><img loading=\"lazy\" decoding=\"async\" width=\"1299\" height=\"730\" src=\"http:\/\/minevindel.com\/wp-content\/uploads\/2026\/03\/g-1_documentos-resumen-usa-2013-dsc05386-jpg.jpeg\" alt=\"G:\\1_DOCUMENTOS\\RESUMEN USA 2013\\DSC05386.JPG\" class=\"wp-image-970\" srcset=\"http:\/\/minevindel.com\/wp-content\/uploads\/2026\/03\/g-1_documentos-resumen-usa-2013-dsc05386-jpg.jpeg 1299w, http:\/\/minevindel.com\/wp-content\/uploads\/2026\/03\/g-1_documentos-resumen-usa-2013-dsc05386-jpg-300x169.jpeg 300w, http:\/\/minevindel.com\/wp-content\/uploads\/2026\/03\/g-1_documentos-resumen-usa-2013-dsc05386-jpg-1024x575.jpeg 1024w, http:\/\/minevindel.com\/wp-content\/uploads\/2026\/03\/g-1_documentos-resumen-usa-2013-dsc05386-jpg-768x432.jpeg 768w\" sizes=\"auto, (max-width: 1299px) 100vw, 1299px\" \/><\/figure>\n\n\n\n<p><\/p>\n\n\n\n<p>\n  Cristales de olivino. Field Museum Chicago. Foto E. Vindel.\n<\/p>\n\n\n\n<p><strong>GRANATE<\/strong>\n<\/p>\n\n\n\n<p>\n  F\u00f3rmulas: \n<\/p>\n\n\n\n<p><strong>Piropo<\/strong> \tMg<sub>3<\/sub>Al<sub>2<\/sub>Si<sub>3<\/sub>O<sub>12<\/sub> \t\t<strong>Grosularia\t<\/strong>Ca<sub>3<\/sub>Al<sub>2<\/sub>Si<sub>3<\/sub>O<sub>12<\/sub>\n<\/p>\n\n\n\n<p><strong>Almandino<\/strong>\tFe<sub>3<\/sub>Al<sub>2<\/sub>Si<sub>3<\/sub>O<sub>12<\/sub> \t\t<strong>Andradita\t<\/strong>Ca<sub>3<\/sub>Fe<sub>2<\/sub>Si<sub>3<\/sub>O<sub>12<\/sub>\n<\/p>\n\n\n\n<p><strong>Espesartina\t<\/strong>Mn<sub>3<\/sub>Al<sub>2<\/sub>Si<sub>3<\/sub>O<sub>12<\/sub> \t\t<strong>Uvarovita\t<\/strong>Ca<sub>3<\/sub>Cr<sub>2<\/sub>Si<sub>3<\/sub>O<sub>12<\/sub>\n<\/p>\n\n\n\n<p>\n  Sistema cristalino: C\u00fabico.\t\n<\/p>\n\n\n\n<p>\n  Forma y h\u00e1bito: Dodecaedro, trapezoedro, a menudo combinados. Por lo general bien cristalizado. Granular.\n<\/p>\n\n\n\n<p><strong>Propiedades f\u00edsicas: <\/strong>\n<\/p>\n\n\n\n<p>\n  Color: Seg\u00fan composici\u00f3n.  \n<\/p>\n\n\n\n<p><strong>Piropo: <\/strong>Rojo intenso a negro.\n<\/p>\n\n\n\n<p><strong>Almandino: <\/strong>Rojo oscuro.\n<\/p>\n\n\n\n<p><strong>Espesartina:<\/strong>\tCasta\u00f1o a rojo.\n<\/p>\n\n\n\n<p><strong>Grosularia: <\/strong>Blanco, verde, amarillo, pardo, canela, rosa.\n<\/p>\n\n\n\n<p><strong>Andradita: <\/strong>Amarillo, verdoso, pardo a negro.<strong>\t<\/strong>\n<\/p>\n\n\n\n<p><strong>Uvarovita: <\/strong>Verde esmeralda.\n<\/p>\n\n\n\n<p>\n  Exfoliaci\u00f3n: Ninguna.\n<\/p>\n\n\n\n<p>\n  Fractura concoidea.\n<\/p>\n\n\n\n<p>\n  Raya: Blanca.\n<\/p>\n\n\n\n<p>\n  Brillo: V\u00edtreo a resinoso.\n<\/p>\n\n\n\n<p>\n  Dureza: <strong>H <\/strong>6,5 \u2013 7,5 \n<\/p>\n\n\n\n<p>\n  Peso espec\u00edfico: <strong>G <\/strong>3,58 \u2013 4,32 g\/cm<sup>3<\/sup>\n<\/p>\n\n\n\n<p><strong>Composici\u00f3n: <\/strong>Los granates tienen formula general (SiO<sub>4<\/sub>)<sub>3<\/sub> A<sub>3 <\/sub>B<sub>2<\/sub>. \u201cA\u201d puede ser Ca<sup>2+<\/sup>, Mg<sup>2+<\/sup>, Fe<sup>2+<\/sup> o Mn<sup>2+<\/sup>. \u201cB\u201d puede ser Al<sup>3+<\/sup>, Fe<sup>3+<\/sup> o Cr<sup>3+<\/sup>.   Son raros los miembros puros.\n<\/p>\n\n\n\n<p><img loading=\"lazy\" decoding=\"async\" width=\"1299\" height=\"863\" class=\"wp-image-971\" src=\"http:\/\/minevindel.com\/wp-content\/uploads\/2026\/03\/g-2_fotos-minerales-concurso-elektra-grosularia-o.jpeg\" alt=\"G:\\2_FOTOS\\MINERALES CONCURSO ELEKTRA\\GROSULARIA-ORTOSA.JPG\" srcset=\"http:\/\/minevindel.com\/wp-content\/uploads\/2026\/03\/g-2_fotos-minerales-concurso-elektra-grosularia-o.jpeg 1299w, http:\/\/minevindel.com\/wp-content\/uploads\/2026\/03\/g-2_fotos-minerales-concurso-elektra-grosularia-o-300x199.jpeg 300w, http:\/\/minevindel.com\/wp-content\/uploads\/2026\/03\/g-2_fotos-minerales-concurso-elektra-grosularia-o-1024x680.jpeg 1024w, http:\/\/minevindel.com\/wp-content\/uploads\/2026\/03\/g-2_fotos-minerales-concurso-elektra-grosularia-o-768x510.jpeg 768w\" sizes=\"auto, (max-width: 1299px) 100vw, 1299px\" \/><\/p>\n\n\n\n<p> Grosularia con ortosa. Colecci\u00f3n privada de E. Vindel<\/p>\n\n\n\n<p> <\/p>\n\n\n\n<p><img loading=\"lazy\" decoding=\"async\" width=\"1299\" height=\"974\" class=\"wp-image-972\" src=\"http:\/\/minevindel.com\/wp-content\/uploads\/2026\/03\/g-2_fotos-fotos-de-geologia-smitsonian-2006-grana.jpeg\" alt=\"G:\\2_FOTOS\\FOTOS DE GEOLOGIA\\SMITSONIAN 2006\\GRANATES2.jpg\" srcset=\"http:\/\/minevindel.com\/wp-content\/uploads\/2026\/03\/g-2_fotos-fotos-de-geologia-smitsonian-2006-grana.jpeg 1299w, http:\/\/minevindel.com\/wp-content\/uploads\/2026\/03\/g-2_fotos-fotos-de-geologia-smitsonian-2006-grana-300x225.jpeg 300w, http:\/\/minevindel.com\/wp-content\/uploads\/2026\/03\/g-2_fotos-fotos-de-geologia-smitsonian-2006-grana-1024x768.jpeg 1024w, http:\/\/minevindel.com\/wp-content\/uploads\/2026\/03\/g-2_fotos-fotos-de-geologia-smitsonian-2006-grana-768x576.jpeg 768w\" sizes=\"auto, (max-width: 1299px) 100vw, 1299px\" \/> Colecci\u00f3n de granates. Smithsonian Institution. Foto E. Vindel.<\/p>\n\n\n\n<figure class=\"wp-block-image\"><img loading=\"lazy\" decoding=\"async\" width=\"1100\" height=\"880\" src=\"http:\/\/minevindel.com\/wp-content\/uploads\/2026\/03\/g-1_documentos-geoimagenes-ma-figura-15-granate-j.jpeg\" alt=\"G:\\1_DOCUMENTOS\\GEOIMAGENES MA\\Figura 15.Granate.JPG\" class=\"wp-image-973\" srcset=\"http:\/\/minevindel.com\/wp-content\/uploads\/2026\/03\/g-1_documentos-geoimagenes-ma-figura-15-granate-j.jpeg 1100w, http:\/\/minevindel.com\/wp-content\/uploads\/2026\/03\/g-1_documentos-geoimagenes-ma-figura-15-granate-j-300x240.jpeg 300w, http:\/\/minevindel.com\/wp-content\/uploads\/2026\/03\/g-1_documentos-geoimagenes-ma-figura-15-granate-j-1024x819.jpeg 1024w, http:\/\/minevindel.com\/wp-content\/uploads\/2026\/03\/g-1_documentos-geoimagenes-ma-figura-15-granate-j-768x614.jpeg 768w\" sizes=\"auto, (max-width: 1100px) 100vw, 1100px\" \/><\/figure>\n\n\n\n<p><\/p>\n\n\n\n<p>\n  Almandino. Colecci\u00f3n privada de E. Vindel\n<\/p>\n\n\n\n<figure class=\"wp-block-image\"><img loading=\"lazy\" decoding=\"async\" width=\"1299\" height=\"863\" src=\"http:\/\/minevindel.com\/wp-content\/uploads\/2026\/03\/g-2_fotos-fotos-de-minerales-y-rocas-dsc00688-jpg.jpeg\" alt=\"G:\\2_FOTOS\\FOTOS DE MINERALES Y ROCAS\\DSC00688.JPG\" class=\"wp-image-974\" srcset=\"http:\/\/minevindel.com\/wp-content\/uploads\/2026\/03\/g-2_fotos-fotos-de-minerales-y-rocas-dsc00688-jpg.jpeg 1299w, http:\/\/minevindel.com\/wp-content\/uploads\/2026\/03\/g-2_fotos-fotos-de-minerales-y-rocas-dsc00688-jpg-300x199.jpeg 300w, http:\/\/minevindel.com\/wp-content\/uploads\/2026\/03\/g-2_fotos-fotos-de-minerales-y-rocas-dsc00688-jpg-1024x680.jpeg 1024w, http:\/\/minevindel.com\/wp-content\/uploads\/2026\/03\/g-2_fotos-fotos-de-minerales-y-rocas-dsc00688-jpg-768x510.jpeg 768w\" sizes=\"auto, (max-width: 1299px) 100vw, 1299px\" \/><\/figure>\n\n\n\n<p><\/p>\n\n\n\n<p>\n  Grosularia. Smithsonian Institution. Foto E. Vindel.\n<\/p>\n\n\n\n<p><strong>CIRC\u00d3N (Zirc\u00f3n)  <\/strong>\n<\/p>\n\n\n\n<p>\n  F\u00f3rmula: ZrSiO<sub>4<\/sub>\n<\/p>\n\n\n\n<p>\n  Sistema cristalino: Tetragonal.\n<\/p>\n\n\n\n<p>\n  Forma y h\u00e1bito: Los cristales son una combinaci\u00f3n sencilla: {010}, {011} o {110}. Tambi\u00e9n granos irregulares. Aspecto parecido al de un granate, pero h\u00e1bito prism\u00e1tico.\n<\/p>\n\n\n\n<p><strong>Propiedades f\u00edsicas: <\/strong>\n<\/p>\n\n\n\n<p>\n  Color: Pardo, incoloro, gris, rojo, verde.\n<\/p>\n\n\n\n<p>\n  Exfoliaci\u00f3n: {010} d\u00e9bil.\n<\/p>\n\n\n\n<p>\n  Fractura concoidea.\n<\/p>\n\n\n\n<p>\n  Raya: Blanca\n<\/p>\n\n\n\n<p>\n  Brillo: Adamantino\n<\/p>\n\n\n\n<p>\n  Dureza: <strong>H <\/strong>7,5\n<\/p>\n\n\n\n<p>\n  Peso espec\u00edfico: <strong>G <\/strong>4,68 g\/cm<sup>3<\/sup>\n<\/p>\n\n\n\n<p><strong>Composici\u00f3n: <\/strong>ZrO<sub>2<\/sub> 67,2%, SiO<sub>2<\/sub> 32,8%. Contiene 1 al 4% de Hafnio.\n<\/p>\n\n\n\n<figure class=\"wp-block-image\"><img loading=\"lazy\" decoding=\"async\" width=\"1299\" height=\"863\" src=\"http:\/\/minevindel.com\/wp-content\/uploads\/2026\/03\/c-users-elena-vindel-desktop-geominero-dsc09460-j.jpeg\" alt=\"C:\\Users\\ELENA VINDEL\\Desktop\\Geominero\\DSC09460.JPG\" class=\"wp-image-975\" srcset=\"http:\/\/minevindel.com\/wp-content\/uploads\/2026\/03\/c-users-elena-vindel-desktop-geominero-dsc09460-j.jpeg 1299w, http:\/\/minevindel.com\/wp-content\/uploads\/2026\/03\/c-users-elena-vindel-desktop-geominero-dsc09460-j-300x199.jpeg 300w, http:\/\/minevindel.com\/wp-content\/uploads\/2026\/03\/c-users-elena-vindel-desktop-geominero-dsc09460-j-1024x680.jpeg 1024w, http:\/\/minevindel.com\/wp-content\/uploads\/2026\/03\/c-users-elena-vindel-desktop-geominero-dsc09460-j-768x510.jpeg 768w\" sizes=\"auto, (max-width: 1299px) 100vw, 1299px\" \/><\/figure>\n\n\n\n<p><\/p>\n\n\n\n<p>\n  Zirc\u00f3n. Museo Geominero. Foto E. Vindel.\n<\/p>\n\n\n\n<p><strong>GRUPO Al<sub>2<\/sub>SiO<sub>5<\/sub><\/strong>\n<\/p>\n\n\n\n<p>\n  Hay tres polimorfos Al<sub>2<\/sub>SiO<sub>5<\/sub>, andalucita, silimanita y distena.\n<\/p>\n\n\n\n<p><strong>ANDALUCITA<\/strong>\n<\/p>\n\n\n\n<p>\n  F\u00f3rmula: Al<sub>2<\/sub>SiO<sub>5<\/sub>\n<\/p>\n\n\n\n<p>\n  Sistema cristalino: R\u00f3mbico.\n<\/p>\n\n\n\n<p>\n  Forma y h\u00e1bito: Prismas elongados paralelos a <em>c<\/em> {110}, casi cuadrados terminados por {001}. La variedad <em>quiastolita<\/em> forma inclusiones carbonosas dispuestas en cruz.\n<\/p>\n\n\n\n<p><strong>Propiedades f\u00edsicas: <\/strong>\n<\/p>\n\n\n\n<p>\n  Color: rojo, casta\u00f1o, verde oliva. \n<\/p>\n\n\n\n<p>\n  Exfoliaci\u00f3n: {110} buena.\n<\/p>\n\n\n\n<p>\n  Fractura subconcoidea, irregular.\n<\/p>\n\n\n\n<p>\n  Raya: Blanca.\n<\/p>\n\n\n\n<p>\n  Brillo: V\u00edtreo.\n<\/p>\n\n\n\n<p>\n  Dureza: <strong>H <\/strong>6,5 &#8211; 7,5\n<\/p>\n\n\n\n<p>\n  Peso espec\u00edfico: <strong>G <\/strong>3,16 \u2013 3,20 g\/cm<sup>3<\/sup>\n<\/p>\n\n\n\n<p><strong>Composici\u00f3n: <\/strong>Al<sub>2<\/sub>O<sub>3  <\/sub>63,2% SiO<sub>2 <\/sub>26,8%. Relativamente pura, aunque Mn<sup>3+<\/sup> y Fe<sup>3+<\/sup>, pueden estar presentes.\n<\/p>\n\n\n\n<p>\n  <img loading=\"lazy\" decoding=\"async\" width=\"640\" height=\"480\" alt=\"E:\\1_DOCUMENTOS\\SILICATOS\\imagenes minerales\\FOTOS SILICATOS VISU\\Minerales 013.jpg\" src=\"http:\/\/minevindel.com\/wp-content\/uploads\/2026\/03\/e-1_documentos-silicatos-imagenes-minerales-fotos.jpeg\" class=\"wp-image-976\" srcset=\"http:\/\/minevindel.com\/wp-content\/uploads\/2026\/03\/e-1_documentos-silicatos-imagenes-minerales-fotos.jpeg 640w, http:\/\/minevindel.com\/wp-content\/uploads\/2026\/03\/e-1_documentos-silicatos-imagenes-minerales-fotos-300x225.jpeg 300w\" sizes=\"auto, (max-width: 640px) 100vw, 640px\" \/>\n  Andalucita variedad quiastolita. Tiene inclusiones carbonosas en forma de cruz. Colecci\u00f3n de la Universidad Complutense.\n<\/p>\n\n\n\n<p><strong>SILIMANITA<\/strong>\n<\/p>\n\n\n\n<p>\n  F\u00f3rmula: Al<sub>2<\/sub>SiO<sub>5<\/sub>\n<\/p>\n\n\n\n<p>\n  Sistema cristalino: R\u00f3mbico\n<\/p>\n\n\n\n<p>\n  Forma y h\u00e1bito: Cristales largos y delgados, en grupos paralelos, fibrosos, llamados <em>fibrolita<\/em>.\n<\/p>\n\n\n\n<p><strong>Propiedades f\u00edsicas: <\/strong>\n<\/p>\n\n\n\n<p>\n  Color: incoloro, pardo por la presencia de hierro.  \n<\/p>\n\n\n\n<p>\n  Exfoliaci\u00f3n: { 010} perfecta.\n<\/p>\n\n\n\n<p>\n  Fractura irregular.\n<\/p>\n\n\n\n<p>\n  Raya: Blanca.\n<\/p>\n\n\n\n<p>\n  Brillo: V\u00edtreo.\n<\/p>\n\n\n\n<p>\n  Dureza: <strong>H <\/strong>6,5 \u2013 7,5\n<\/p>\n\n\n\n<p>\n  Peso espec\u00edfico: <strong>G <\/strong> 3,23 \u2013 3,27 g\/cm<sup>3<\/sup>\n<\/p>\n\n\n\n<p><strong>Composici\u00f3n: <\/strong>Al<sub>2<\/sub>O<sub>3  <\/sub>63,2% SiO<sub>2 <\/sub>26,8%. Relativamente pura. Fe<sup>3+<\/sup>, Ti<sup>4+<\/sup>, Cr<sup>3+<\/sup> pueden estar presentes.\n<\/p>\n\n\n\n<figure class=\"wp-block-image\"><img loading=\"lazy\" decoding=\"async\" width=\"640\" height=\"480\" src=\"http:\/\/minevindel.com\/wp-content\/uploads\/2026\/03\/minerales-008.jpeg\" alt=\"Minerales 008\" class=\"wp-image-977\" srcset=\"http:\/\/minevindel.com\/wp-content\/uploads\/2026\/03\/minerales-008.jpeg 640w, http:\/\/minevindel.com\/wp-content\/uploads\/2026\/03\/minerales-008-300x225.jpeg 300w\" sizes=\"auto, (max-width: 640px) 100vw, 640px\" \/><\/figure>\n\n\n\n<p><\/p>\n\n\n\n<p>\n  Silimanita con color pardo por la presencia de hierro. Colecci\u00f3n de la Universidad Complutense.\n<\/p>\n\n\n\n<p><strong>DISTENA<\/strong>\n<\/p>\n\n\n\n<p>\n  F\u00f3rmula: Al<sub>2<\/sub>SiO<sub>5<\/sub>\n<\/p>\n\n\n\n<p>\n  Sistema cristalino: Tricl\u00ednico.\n<\/p>\n\n\n\n<p>\n  Forma y h\u00e1bito: Cristales tabulares, largos. En agregados hojosos.\n<\/p>\n\n\n\n<p><strong>Propiedades f\u00edsicas: <\/strong>\n<\/p>\n\n\n\n<p>\n  Color: Azul, gris o blanco\n<\/p>\n\n\n\n<p>\n  Exfoliaci\u00f3n: {100} perfecta, {010} buena. Menos com\u00fan verde claro.\n<\/p>\n\n\n\n<p>\n  Fractura astillosa.\n<\/p>\n\n\n\n<p>\n  Raya: Blanca.\n<\/p>\n\n\n\n<p>\n  Brillo: V\u00edtreo a perlado.\n<\/p>\n\n\n\n<p>\n  Dureza: <strong>H <\/strong>4.5 seg\u00fan {001}, paralela a la longitud  de los cristales y 6.5 seg\u00fan {010}, perpendicular a esa direcci\u00f3n.\n<\/p>\n\n\n\n<p>\n  Peso espec\u00edfico: <strong>G <\/strong> 3,55 \u2013 3,66 g\/cm<sup>3<\/sup>\n<\/p>\n\n\n\n<p><strong>Composici\u00f3n: <\/strong>Al<sub>2<\/sub>O<sub>3  <\/sub>63,2% SiO<sub>2 <\/sub>26,8%. Relativamente pura. Fe<sup>3+<\/sup>, Ti<sup>4+<\/sup>, Cr<sup>3+<\/sup> pueden estar presentes.\n<\/p>\n\n\n\n<figure class=\"wp-block-image\"><img loading=\"lazy\" decoding=\"async\" width=\"1299\" height=\"863\" src=\"http:\/\/minevindel.com\/wp-content\/uploads\/2026\/03\/g-2_fotos-minerales-concurso-elektra-18-distena-j.jpeg\" alt=\"G:\\2_FOTOS\\MINERALES CONCURSO ELEKTRA\\18 Distena.jpg.JPG\" class=\"wp-image-978\" srcset=\"http:\/\/minevindel.com\/wp-content\/uploads\/2026\/03\/g-2_fotos-minerales-concurso-elektra-18-distena-j.jpeg 1299w, http:\/\/minevindel.com\/wp-content\/uploads\/2026\/03\/g-2_fotos-minerales-concurso-elektra-18-distena-j-300x199.jpeg 300w, http:\/\/minevindel.com\/wp-content\/uploads\/2026\/03\/g-2_fotos-minerales-concurso-elektra-18-distena-j-1024x680.jpeg 1024w, http:\/\/minevindel.com\/wp-content\/uploads\/2026\/03\/g-2_fotos-minerales-concurso-elektra-18-distena-j-768x510.jpeg 768w\" sizes=\"auto, (max-width: 1299px) 100vw, 1299px\" \/><\/figure>\n\n\n\n<p><\/p>\n\n\n\n<p>\n  Distena (azul) y calcita (blanca). Colecci\u00f3n privada de E. Vindel\n<\/p>\n\n\n\n<figure class=\"wp-block-image\"><img loading=\"lazy\" decoding=\"async\" width=\"1299\" height=\"863\" src=\"http:\/\/minevindel.com\/wp-content\/uploads\/2026\/03\/f-caja-f2-distena-jpg.jpeg\" alt=\"F:\\Caja F2\\DISTENA.JPG\" class=\"wp-image-979\" srcset=\"http:\/\/minevindel.com\/wp-content\/uploads\/2026\/03\/f-caja-f2-distena-jpg.jpeg 1299w, http:\/\/minevindel.com\/wp-content\/uploads\/2026\/03\/f-caja-f2-distena-jpg-300x199.jpeg 300w, http:\/\/minevindel.com\/wp-content\/uploads\/2026\/03\/f-caja-f2-distena-jpg-1024x680.jpeg 1024w, http:\/\/minevindel.com\/wp-content\/uploads\/2026\/03\/f-caja-f2-distena-jpg-768x510.jpeg 768w\" sizes=\"auto, (max-width: 1299px) 100vw, 1299px\" \/><\/figure>\n\n\n\n<p><\/p>\n\n\n\n<p>\n  Distena (azul). Colecci\u00f3n privada de E. Vindel\n<\/p>\n\n\n\n<p><strong>TOPACIO<\/strong>\n<\/p>\n\n\n\n<p>\n  F\u00f3rmula: Al<sub>2 <\/sub>SiO<sub>4 <\/sub>(F,OH)<sub>2<\/sub>\n<\/p>\n\n\n\n<p>\n  Sistema cristalino: R\u00f3mbico.\n<\/p>\n\n\n\n<p>\n  Forma y h\u00e1bito: Los cristales son prism\u00e1ticos terminados en bipir\u00e1mides, prismas y pinacoide. As\u00ed mismo, masas cristalinas.\n<\/p>\n\n\n\n<p><strong>Propiedades f\u00edsicas: <\/strong>\n<\/p>\n\n\n\n<p>\n  Color: Incoloro, amarillo, rojo, azul, verdoso. Se puede confundir con el diamante (densidad 3.52).\n<\/p>\n\n\n\n<p>\n  Exfoliaci\u00f3n: {001} perfecta.\n<\/p>\n\n\n\n<p>\n  Fractura subconcoidea, irregular.\n<\/p>\n\n\n\n<p>\n  Raya: Blanca.\n<\/p>\n\n\n\n<p>\n  Brillo: V\u00edtreo \n<\/p>\n\n\n\n<p>\n  Dureza: <strong>H <\/strong>8 \n<\/p>\n\n\n\n<p>\n  Peso espec\u00edfico: <strong>G <\/strong> 3,4 \u2013 3,6 g\/cm\n<\/p>\n\n\n\n<p><strong>Composici\u00f3n: <\/strong>Al<sub>2<\/sub>O<sub>3 <\/sub> 56,6<sub> <\/sub>%- SiO<sub>2 <\/sub>33,4 % H<sub>2<\/sub>O 10,0%. La mayor parte de (OH)- est\u00e1 remplazado por fl\u00faor, siendo 20,7% la m\u00e1xima capacidad de+ fl\u00faor.\n<\/p>\n\n\n\n<figure class=\"wp-block-image\"><img loading=\"lazy\" decoding=\"async\" width=\"1299\" height=\"974\" src=\"http:\/\/minevindel.com\/wp-content\/uploads\/2026\/03\/g-2_fotos-fotos-de-geologia-smitsonian-2006-topac.jpeg\" alt=\"G:\\2_FOTOS\\FOTOS DE GEOLOGIA\\SMITSONIAN 2006\\TOPACIO2.jpg\" class=\"wp-image-980\" srcset=\"http:\/\/minevindel.com\/wp-content\/uploads\/2026\/03\/g-2_fotos-fotos-de-geologia-smitsonian-2006-topac.jpeg 1299w, http:\/\/minevindel.com\/wp-content\/uploads\/2026\/03\/g-2_fotos-fotos-de-geologia-smitsonian-2006-topac-300x225.jpeg 300w, http:\/\/minevindel.com\/wp-content\/uploads\/2026\/03\/g-2_fotos-fotos-de-geologia-smitsonian-2006-topac-1024x768.jpeg 1024w, http:\/\/minevindel.com\/wp-content\/uploads\/2026\/03\/g-2_fotos-fotos-de-geologia-smitsonian-2006-topac-768x576.jpeg 768w\" sizes=\"auto, (max-width: 1299px) 100vw, 1299px\" \/><\/figure>\n\n\n\n<p><\/p>\n\n\n\n<p>\n  Topacio azul, tallado. Smithsonian Institution. Foto E. Vindel.\n<\/p>\n\n\n\n<figure class=\"wp-block-image\"><img loading=\"lazy\" decoding=\"async\" width=\"1299\" height=\"974\" src=\"http:\/\/minevindel.com\/wp-content\/uploads\/2026\/03\/g-2_fotos-usa-mineral-usa-washington-topacio-jpg.jpeg\" alt=\"G:\\2_FOTOS\\USA\\MINERAL-USA WASHINGTON\\TOPACIO.jpg\" class=\"wp-image-981\" srcset=\"http:\/\/minevindel.com\/wp-content\/uploads\/2026\/03\/g-2_fotos-usa-mineral-usa-washington-topacio-jpg.jpeg 1299w, http:\/\/minevindel.com\/wp-content\/uploads\/2026\/03\/g-2_fotos-usa-mineral-usa-washington-topacio-jpg-300x225.jpeg 300w, http:\/\/minevindel.com\/wp-content\/uploads\/2026\/03\/g-2_fotos-usa-mineral-usa-washington-topacio-jpg-1024x768.jpeg 1024w, http:\/\/minevindel.com\/wp-content\/uploads\/2026\/03\/g-2_fotos-usa-mineral-usa-washington-topacio-jpg-768x576.jpeg 768w\" sizes=\"auto, (max-width: 1299px) 100vw, 1299px\" \/><\/figure>\n\n\n\n<p><\/p>\n\n\n\n<p>\n  Topacio verdoso y topacio azul. Smithsonian Institution. Foto E. Vindel.\n<\/p>\n\n\n\n<figure class=\"wp-block-image\"><img loading=\"lazy\" decoding=\"async\" width=\"1299\" height=\"730\" src=\"http:\/\/minevindel.com\/wp-content\/uploads\/2026\/03\/g-2_fotos-usa-resumen-usa-2013-dsc05346-jpg.jpeg\" alt=\"G:\\2_FOTOS\\USA\\RESUMEN USA 2013\\DSC05346.JPG\" class=\"wp-image-982\" srcset=\"http:\/\/minevindel.com\/wp-content\/uploads\/2026\/03\/g-2_fotos-usa-resumen-usa-2013-dsc05346-jpg.jpeg 1299w, http:\/\/minevindel.com\/wp-content\/uploads\/2026\/03\/g-2_fotos-usa-resumen-usa-2013-dsc05346-jpg-300x169.jpeg 300w, http:\/\/minevindel.com\/wp-content\/uploads\/2026\/03\/g-2_fotos-usa-resumen-usa-2013-dsc05346-jpg-1024x575.jpeg 1024w, http:\/\/minevindel.com\/wp-content\/uploads\/2026\/03\/g-2_fotos-usa-resumen-usa-2013-dsc05346-jpg-768x432.jpeg 768w\" sizes=\"auto, (max-width: 1299px) 100vw, 1299px\" \/><\/figure>\n\n\n\n<p><\/p>\n\n\n\n<p>\n  Topacio verdoso. Field Museum Chicago. Foto E. Vindel.\n<\/p>\n\n\n\n<p><strong>ESTAUROLITA<\/strong>\n<\/p>\n\n\n\n<p>\n  F\u00f3rmula: Fe<sub>2 <\/sub>Al<sub>9<\/sub>O<sub>6 <\/sub>(SiO<sub>4<\/sub>)<sub>4 <\/sub>(O, OH)<sub>2<\/sub>\n<\/p>\n\n\n\n<p>\n  Sistema cristalino: Monocl\u00ednico.\n<\/p>\n\n\n\n<p>\n  Forma y h\u00e1bito: Cristales prism\u00e1ticos. Maclas en cruz. Son individuos de dos tipos: (1) plano de macla {031},  en el cual los dos individuos est\u00e1n cruzados a 90\u00ba y (2) plano de macla seg\u00fan {231} casi cruzado seg\u00fan 60\u00ba. Frecuentemente presenta cristales y  rara vez masas.\n<\/p>\n\n\n\n<p><strong>Propiedades f\u00edsicas: <\/strong>\n<\/p>\n\n\n\n<p>\n  Color: Casta\u00f1o a negro.\n<\/p>\n\n\n\n<p>\n  Exfoliaci\u00f3n: Ninguna\n<\/p>\n\n\n\n<p>\n  Fractura subconcoidea.\n<\/p>\n\n\n\n<p>\n  Raya: Blanca.\n<\/p>\n\n\n\n<p>\n  Brillo: Resinoso a v\u00edtreo. \n<\/p>\n\n\n\n<p>\n  Dureza: <strong>H <\/strong>7 \u2013 7,5 \n<\/p>\n\n\n\n<p>\n  Peso espec\u00edfico: <strong>G<\/strong> 3,65 \u2013 3,75 g\/cm<sup>3<\/sup>\n<\/p>\n\n\n\n<p><strong>Composici\u00f3n: <\/strong>FeO 16,7%<strong> <\/strong>Al<sub>2<\/sub>O<sub>3 <\/sub>53,3<sub> <\/sub>%  SiO<sub>2 <\/sub>27,9 % H<sub>2<\/sub>0 2,0% para el hierro puro. Aunque el Mg remplaza en peque\u00f1o porcentaje al Fe<sup>2+<\/sup> y Al<sup>3+<\/sup> al Fe<sup>3+<\/sup>. \n<\/p>\n\n\n\n<figure class=\"wp-block-image\"><img loading=\"lazy\" decoding=\"async\" width=\"640\" height=\"480\" src=\"http:\/\/minevindel.com\/wp-content\/uploads\/2026\/03\/minerales-009.jpeg\" alt=\"Minerales 009\" class=\"wp-image-983\" srcset=\"http:\/\/minevindel.com\/wp-content\/uploads\/2026\/03\/minerales-009.jpeg 640w, http:\/\/minevindel.com\/wp-content\/uploads\/2026\/03\/minerales-009-300x225.jpeg 300w\" sizes=\"auto, (max-width: 640px) 100vw, 640px\" \/><\/figure>\n\n\n\n<p><\/p>\n\n\n\n<p>\n  Estaurolita. Colecci\u00f3n de la Universidad Complutense\n<\/p>\n\n\n\n<figure class=\"wp-block-image\"><img loading=\"lazy\" decoding=\"async\" width=\"1299\" height=\"863\" src=\"http:\/\/minevindel.com\/wp-content\/uploads\/2026\/03\/g-2_fotos-minerales-concurso-elektra-estaurolita-.jpeg\" alt=\"G:\\2_FOTOS\\MINERALES CONCURSO ELEKTRA\\ESTAUROLITA.JPG\" class=\"wp-image-984\" srcset=\"http:\/\/minevindel.com\/wp-content\/uploads\/2026\/03\/g-2_fotos-minerales-concurso-elektra-estaurolita-.jpeg 1299w, http:\/\/minevindel.com\/wp-content\/uploads\/2026\/03\/g-2_fotos-minerales-concurso-elektra-estaurolita--300x199.jpeg 300w, http:\/\/minevindel.com\/wp-content\/uploads\/2026\/03\/g-2_fotos-minerales-concurso-elektra-estaurolita--1024x680.jpeg 1024w, http:\/\/minevindel.com\/wp-content\/uploads\/2026\/03\/g-2_fotos-minerales-concurso-elektra-estaurolita--768x510.jpeg 768w\" sizes=\"auto, (max-width: 1299px) 100vw, 1299px\" \/><\/figure>\n\n\n\n<p><\/p>\n\n\n\n<p>\n  Estaurolita maclada, casi cruzado seg\u00fan 60. Colecci\u00f3n privada de E. Vindel\n<\/p>\n\n\n\n<figure class=\"wp-block-image\"><img loading=\"lazy\" decoding=\"async\" width=\"1299\" height=\"863\" src=\"http:\/\/minevindel.com\/wp-content\/uploads\/2026\/03\/c-users-elena-vindel-desktop-caja-f1-estaurolita.jpeg\" alt=\"C:\\Users\\ELENA VINDEL\\Desktop\\Caja F1\\ESTAUROLITA 1.JPG\" class=\"wp-image-985\" srcset=\"http:\/\/minevindel.com\/wp-content\/uploads\/2026\/03\/c-users-elena-vindel-desktop-caja-f1-estaurolita.jpeg 1299w, http:\/\/minevindel.com\/wp-content\/uploads\/2026\/03\/c-users-elena-vindel-desktop-caja-f1-estaurolita-300x199.jpeg 300w, http:\/\/minevindel.com\/wp-content\/uploads\/2026\/03\/c-users-elena-vindel-desktop-caja-f1-estaurolita-1024x680.jpeg 1024w, http:\/\/minevindel.com\/wp-content\/uploads\/2026\/03\/c-users-elena-vindel-desktop-caja-f1-estaurolita-768x510.jpeg 768w\" sizes=\"auto, (max-width: 1299px) 100vw, 1299px\" \/><\/figure>\n\n\n\n<p><\/p>\n\n\n\n<p>\n  Estaurolita. Colecci\u00f3n privada de E. Vindel\n<\/p>\n\n\n\n<p><strong>ESFENA (Titanita)<\/strong>\n<\/p>\n\n\n\n<p>\n  F\u00f3rmula: CaTiO<sub> <\/sub>(SiO<sub>4<\/sub>)\n<\/p>\n\n\n\n<p>\n   Sistema cristalino: Monocl\u00ednico.\n<\/p>\n\n\n\n<p>\n  Forma y h\u00e1bito: Cristales de formas {001}, {110}, y {111}. En finos cristales, en forma de cu\u00f1a con aristas cortantes. Puede darse masivo. \n<\/p>\n\n\n\n<p><strong>Propiedades f\u00edsicas: <\/strong>\n<\/p>\n\n\n\n<p>\n  Color: Pardo, amarillo, anaranjado, verde seg\u00fan la proporci\u00f3n de Fe<sup>3+<\/sup>. Las TR dan tonos anaranjados.\n<\/p>\n\n\n\n<p>\n  Exfoliaci\u00f3n: {110} d\u00e9bil a buena prism\u00e1tica.\n<\/p>\n\n\n\n<p>\n  Fractura irregular.\n<\/p>\n\n\n\n<p>\n  Raya: Blanca, ligeramente parda.\n<\/p>\n\n\n\n<p>\n  Brillo: Resinoso a adamantino. \n<\/p>\n\n\n\n<p>\n  Dureza: <strong>H <\/strong>5 \u2013 5,5 \n<\/p>\n\n\n\n<p>\n  Peso espec\u00edfico: <strong>G <\/strong> 3,4 \u2013 3,55 g\/cm<sup>3<\/sup>\n<\/p>\n\n\n\n<p><strong>Composici\u00f3n: <\/strong>CaO 28,6% TiO 40,8% SiO<sub>2<\/sub> 30,6%. Cantidades peque\u00f1as de TR, Al, Mn, Mg y Zr.\n<\/p>\n\n\n\n<figure class=\"wp-block-image\"><img loading=\"lazy\" decoding=\"async\" width=\"1299\" height=\"810\" src=\"http:\/\/minevindel.com\/wp-content\/uploads\/2026\/03\/g-2_fotos-fotos-museo-vitoria-dsc03121-jpg.jpeg\" alt=\"G:\\2_FOTOS\\FOTOS MUSEO VITORIA\\DSC03121.JPG\" class=\"wp-image-986\" srcset=\"http:\/\/minevindel.com\/wp-content\/uploads\/2026\/03\/g-2_fotos-fotos-museo-vitoria-dsc03121-jpg.jpeg 1299w, http:\/\/minevindel.com\/wp-content\/uploads\/2026\/03\/g-2_fotos-fotos-museo-vitoria-dsc03121-jpg-300x187.jpeg 300w, http:\/\/minevindel.com\/wp-content\/uploads\/2026\/03\/g-2_fotos-fotos-museo-vitoria-dsc03121-jpg-1024x639.jpeg 1024w, http:\/\/minevindel.com\/wp-content\/uploads\/2026\/03\/g-2_fotos-fotos-museo-vitoria-dsc03121-jpg-768x479.jpeg 768w\" sizes=\"auto, (max-width: 1299px) 100vw, 1299px\" \/><\/figure>\n\n\n\n<p><\/p>\n\n\n\n<p>\n  Cristales de esfena parda y brillo adamantino. Museo de Ciencias Naturales de \u00c1lava. Foto E. Vindel.\n<\/p>\n\n\n\n<figure class=\"wp-block-image\"><img loading=\"lazy\" decoding=\"async\" width=\"1299\" height=\"863\" src=\"http:\/\/minevindel.com\/wp-content\/uploads\/2026\/03\/c-users-miguel-angel-desktop-museo-de-vitoria-tit.jpeg\" alt=\"C:\\Users\\Miguel Angel\\Desktop\\Museo de Vitoria\\TITANITA.JPG\" class=\"wp-image-987\" srcset=\"http:\/\/minevindel.com\/wp-content\/uploads\/2026\/03\/c-users-miguel-angel-desktop-museo-de-vitoria-tit.jpeg 1299w, http:\/\/minevindel.com\/wp-content\/uploads\/2026\/03\/c-users-miguel-angel-desktop-museo-de-vitoria-tit-300x199.jpeg 300w, http:\/\/minevindel.com\/wp-content\/uploads\/2026\/03\/c-users-miguel-angel-desktop-museo-de-vitoria-tit-1024x680.jpeg 1024w, http:\/\/minevindel.com\/wp-content\/uploads\/2026\/03\/c-users-miguel-angel-desktop-museo-de-vitoria-tit-768x510.jpeg 768w\" sizes=\"auto, (max-width: 1299px) 100vw, 1299px\" \/><\/figure>\n\n\n\n<p><\/p>\n\n\n\n<p>\n  Cristales de esfena parda. Museo de Ciencias Naturales de \u00c1lava. Foto E. Vindel.\n<\/p>\n\n\n\n<p><strong>DATOLITA<\/strong>\n<\/p>\n\n\n\n<p>\n  F\u00f3rmula: CaB<sub> <\/sub>(SiO<sub>4<\/sub>) OH\n<\/p>\n\n\n\n<p>\n   Sistema cristalino: Monocl\u00ednico.\n<\/p>\n\n\n\n<p>\n  Forma y h\u00e1bito: Generalmente aparece en cristales. Tambi\u00e9n granular o en masas compactas.\n<\/p>\n\n\n\n<p><strong>Propiedades f\u00edsicas: <\/strong>\n<\/p>\n\n\n\n<p>\n  Color: Blanco con tinte verdoso suave.\n<\/p>\n\n\n\n<p>\n  Exfoliaci\u00f3n: Inexistente.\n<\/p>\n\n\n\n<p>\n  Fractura concoidea.\n<\/p>\n\n\n\n<p>\n  Raya: Blanca.\n<\/p>\n\n\n\n<p>\n  Brillo: V\u00edtreo\n<\/p>\n\n\n\n<p>\n  Dureza: <strong>H <\/strong>5 \u2013 5,5 \n<\/p>\n\n\n\n<p>\n  Peso espec\u00edfico: <strong>G <\/strong> 2,8\u2013 3,0 g\/cm<sup>3<\/sup>\n<\/p>\n\n\n\n<p><strong>Composici\u00f3n: <\/strong>CaO 35% B<sub>2<\/sub>O<sub>3<\/sub> 21,8% SiO<sub>2<\/sub> 37,6% H<sub>2<\/sub>O 5,6%.\n<\/p>\n\n\n\n<figure class=\"wp-block-image\"><img loading=\"lazy\" decoding=\"async\" width=\"1299\" height=\"863\" src=\"http:\/\/minevindel.com\/wp-content\/uploads\/2026\/03\/c-users-elena-vindel-desktop-caja-f4-dsc09329-jpg.jpeg\" alt=\"C:\\Users\\ELENA VINDEL\\Desktop\\Caja F4\\DSC09329.JPG\" class=\"wp-image-988\" srcset=\"http:\/\/minevindel.com\/wp-content\/uploads\/2026\/03\/c-users-elena-vindel-desktop-caja-f4-dsc09329-jpg.jpeg 1299w, http:\/\/minevindel.com\/wp-content\/uploads\/2026\/03\/c-users-elena-vindel-desktop-caja-f4-dsc09329-jpg-300x199.jpeg 300w, http:\/\/minevindel.com\/wp-content\/uploads\/2026\/03\/c-users-elena-vindel-desktop-caja-f4-dsc09329-jpg-1024x680.jpeg 1024w, http:\/\/minevindel.com\/wp-content\/uploads\/2026\/03\/c-users-elena-vindel-desktop-caja-f4-dsc09329-jpg-768x510.jpeg 768w\" sizes=\"auto, (max-width: 1299px) 100vw, 1299px\" \/><\/figure>\n\n\n\n<p><\/p>\n\n\n\n<p>\n  Datolita. Colecci\u00f3n privada de E. Vindel.\n<\/p>\n","protected":false},"excerpt":{"rendered":"<p>8. NESOSILICATOS OLIVINO F\u00f3rmula: (MgFe)2SiO4 Sistema cristalino: R\u00f3mbico. Forma y h\u00e1bito: Los cristales, son por regular 3 prismas, 3 pinacoides y 1 bipir\u00e1mide. Se presenta en granos como incrustaciones o en masas granulares. Propiedades f\u00edsicas: Color: Verde oliva. Exfoliaci\u00f3n: Pobres en {010} y {110}. Poco perceptibles. Fractura concoidea. Raya: Blanca. Brillo: V\u00edtreo. Dureza: H 6,5&hellip; <a class=\"more-link\" href=\"http:\/\/minevindel.com\/index.php\/tema-8\/\">Seguir leyendo <span class=\"screen-reader-text\">Tema 8<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"class_list":["post-619","page","type-page","status-publish","hentry","entry"],"_links":{"self":[{"href":"http:\/\/minevindel.com\/index.php\/wp-json\/wp\/v2\/pages\/619","targetHints":{"allow":["GET"]}}],"collection":[{"href":"http:\/\/minevindel.com\/index.php\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"http:\/\/minevindel.com\/index.php\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"http:\/\/minevindel.com\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/minevindel.com\/index.php\/wp-json\/wp\/v2\/comments?post=619"}],"version-history":[{"count":4,"href":"http:\/\/minevindel.com\/index.php\/wp-json\/wp\/v2\/pages\/619\/revisions"}],"predecessor-version":[{"id":991,"href":"http:\/\/minevindel.com\/index.php\/wp-json\/wp\/v2\/pages\/619\/revisions\/991"}],"wp:attachment":[{"href":"http:\/\/minevindel.com\/index.php\/wp-json\/wp\/v2\/media?parent=619"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}