A lithium magnesium aluminium inosilicate mineral, varying in colour from black or violet to sky blue.

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  • Holmquistite — is a lithium magnesium aluminium inosilicate mineral with chemical formula: Li2(Mg,Fe2+)3Al2Si8O22(OH)2. It crystallizes in the orthorhombic crystal system as prismativ crystals up to 10 cm or as massive aggregates. It has a Mohs hardness of 5 6… …   Wikipedia

  • holmquistite — holm·quist·ite …   English syllables

  • holmquistite — ˈhōmˌkwiˌstīt also ōlm noun ( s) Usage: usually capitalized Etymology: Swedish hölmquistit, from Persian Johan Hölmquist, Swedish scientist + Swedish it ite : a mineral (Na,K,Ca)Li(Mg,Fe)3Al2Si8O22 …   Useful english dictionary

  • Glaucophane — is a mineral belonging to the amphibole group, chemical formula Na2(Mg,Fe)3Al2Si8O22(OH)2. It is named from its typical blue color (in Greek, glaucophane means blue appearing ). Glaucophane crystallizes in the monoclinic system.The blue color is… …   Wikipedia

  • List of minerals F-J (complete) — It is currently not possible to have a complete list of minerals . The International Mineralogical Association is the international group that recognises new minerals and new mineral names, however minerals discovered before 1959 did not go… …   Wikipedia

  • List of minerals — This is a List of minerals for which there are Wikipedia articles. Mineral variety names and mineraloids are to be listed after the valid minerals for each letter.For a complete listing (about 4,000) of all mineral names: List of minerals… …   Wikipedia

  • Amphibole — Motif cristallin élémentaire des amphiboles Les amphiboles sont une famille de minéraux, silicates de fer, de calcium ou de magnésium. Elles cristallisent dans les systèmes orthorhombique et monoclinique en prismes très allongés, avec un clivage… …   Wikipédia en Français

  • Jacques Thoreau — (27 septembre 1886 à Bruxelles 11 janvier 1973) fut professeur de minéralogie à l Université catholique de Louvain (UCL). Sommaire 1 Biographie 2 Distinctions honorifiques …   Wikipédia en Français

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