bertrandite

bertrandite
A basic beryllium sorosilicate that is an ore of beryllium.

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  • Bertrandite — Bertrandite[1] Catégorie IX : silicates[2] …   Wikipédia en Français

  • Bertrandite — is a beryllium sorosilicate hydroxide mineral with composition: Be4Si2O7(OH)2. Bertrandite is a colorless to pale yellow orthorhombic mineral with a hardness of 6 7. It is commonly found in beryllium rich pegmatites and is in part an alteration… …   Wikipedia

  • bertrandite — /berr treuhn duyt /, n. a mineral, hydrous beryllium silicate, Be4Si2O7(OH)2, colorless or pale yellow, with a vitreous luster, occurring as tabular or prismatic crystals in pegmatites and hydrothermal veins. [1885 90; < F, after E. Bertrand,… …   Universalium

  • bertrandite — ber·trand·ite …   English syllables

  • bertrandite — ˈbər.trənˌdīt noun ( s) Etymology: French, from E. Bertrand, 19th century Frenchman who first described it + French ite : a mineral Be4Si2O7(OH)2 consisting of a beryllium silicate occurring in hard colorless or pale yellow prismatic crystals… …   Useful english dictionary

  • Beryllium — (pronEng|bəˈrɪliəm) is a chemical element with the symbol Be and atomic number 4. A bivalent element, beryllium is a steel grey, strong, light weight yet brittle alkaline earth metal. It is primarily used as a hardening agent in alloys, most… …   Wikipedia

  • Period 2 element — A period 2 element is one of the chemical elements in the second row (or period) of the periodic table of the chemical elements. The periodic table is laid out in rows to illustrate recurring (periodic) trends in the chemical behaviour of the… …   Wikipedia

  • List of minerals A-B (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

  • Orthorhombic crystal system — An example of the orthorhombic crystals, aragonite In crystallography, the orthorhombic crystal system is one of the seven lattice point groups. Orthorhombic lattices result from stretching a cubic lattice along two of its orthogonal pairs by two …   Wikipedia

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