richterite

also called  soda tremolite 

      amphibole mineral, a sodium silicate of calcium and magnesium or manganese. It occurs in thermally metamorphosed limestones and skarns or as a hydrothermal product in alkaline igneous rocks. Richterite is related to tremolite by the substitution of sodium for calcium in richterite's chemical composition. For chemical formula and detailed physical properties, see amphibole (table).

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Universalium. 2010.

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  • richterite — noun A basic silicate mineral of sodium, potassium, magnesium, manganese, and calcium belonging to the amphibole group …   Wiktionary

  • richterite — rich·ter·ite …   English syllables

  • richterite — ˈriktəˌrīt noun ( s) Etymology: German richterit, from Theodor Richter died 1898 German metallurgical chemist + German it ite : a mineral (Na,K)2(Mg,Mn,Ca)6Si8O22(OH)2 that is a variety of amphibole containi …   Useful english dictionary

  • Lamproite — Lamproites are ultrapotassic mantle derived volcanic rocks. They have low CaO, Al2O3, Na2O, high K2O/Al2O3, a relatively high MgO content and extreme enrichment in incompatible elements.Lamproites are geographically widespread yet are… …   Wikipedia

  • Richterit — Grüner Richterit aus Badachschan, Afghanistan (Größe: 2,1 x 1,0 cm) Chemische Formel Na[CaNa](Mg,Fe2+)5[(OH)2|Si8O22][1] …   Deutsch 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

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  • amphibole — /am feuh bohl /, n. Mineral. any of a complex group of hydrous silicate minerals, containing chiefly calcium, magnesium, sodium, iron, and aluminum, and including hornblende, tremolite, asbestos, etc., occurring as important constituents of many… …   Universalium

  • Amphiboles — ▪ Table Amphiboles name colour lustre Mohs hardness specific gravity actinolite colourless to gray; darkens with increased Fe through green to black silky; oily 2.9–3.2 2.9–3.2 anthophyllite white, gray, green, or various shades of brown vitreous …   Universalium

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