Colorless+rock-crystal

  • 81Dickite — General Category Phyllosilicate Chemical formula Al2Si2O5(OH)4 Strunz classification 09.ED.05 Dana classification …

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  • 82Mercury (element) — gold ← mercury → thallium Cd ↑ Hg ↓ Cn …

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  • 83Sulfur — This article is about the chemical element. For other uses, see Sulfur (disambiguation). phosphorus ← sulfur → chlorine …

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  • 84Nepheline syenite — of the Intrusive Complex of Tanguá, State of Rio de Janeiro, Brasil (Motoki et al., 2011a) Nephelene syenite is a holocrystalline plutonic rock that consists largely of nepheline and alkali feldspar. The rocks are mostly pale colored, grey or… …

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  • 85Hydroxylapatite — crystals on matrix General Category Phosphate mineral …

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  • 86Germanium — (pronEng|dʒɚˈmeɪniəm) is a chemical element with the symbol Ge and atomic number 32. It is a lustrous, hard, silver white metalloid in the carbon group, chemically similar to its group neighbors tin and silicon. Germanium has five naturally… …

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  • 87Muscovite — For other uses, see Muscovite (disambiguation). Muscovite Muscovite with albite from Doce valley, Minas Gerais, Brazil (dimensions: 6×5.3×3.9 cm) General Catego …

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  • 88Cordierite — from Italy General Category Silicate mineral Chemical formula …

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  • 89Sapphirine — Indigo blue sapphirine crystal from Ft. Dauphin, Madagascar (size: 2.1 x 1.9 x 1.4 cm) General Category Silicate mineral …

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  • 90Lamprophyre — Lamprophyres (Greek λαµπρός (lamprós) = bright and φύρω (phýro) = to mix) are uncommon, small volume ultrapotassic igneous rocks primarily occurring as dikes, lopoliths, laccoliths, stocks and small intrusions. They are alkaline silica… …

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