silicate+of+manganese
31mineral deposit — Introduction aggregate of a mineral in an unusually high concentration. About half of the known chemical elements (chemical element) possess some metallic (metal) properties. The term metal, however, is reserved for those chemical… …
32Dictionary of chemical formulas — This is a list of chemical compounds with chemical formulas and CAS numbers, indexed by formula. This complements alternative listings to be found at list of inorganic compounds, list of organic compounds and inorganic compounds by element. Table …
33Acid mine drainage — Yellow boy in a stream receiving acid drainage from surface coal mining. Acid mine drainage (AMD), or acid rock drainage (ARD), refers to the outflow of acidic water from (usually abandoned) metal mines or coal mines. However, other areas where… …
34olivine — olivinic /ol euh vin ik/, olivinitic /ol euh vi nit ik/, adj. /ol euh veen , ol euh veen /, n. Mineral. any of a group of magnesium iron silicates, (Mg,Fe)2SiO4, occurring in olive green to gray green masses as an important constituent of basic… …
35rhodonite — /rohd n uyt /, n. a mineral, manganese metasilicate, MnSiO3, occurring usually in rose red masses, sometimes used as an ornamental stone; manganese spar. [1815 25; < G Rhodonit < Gk rhódon ROSE1 + G it ITE1] * * * Silicate mineral that occurs in… …
36Earth Sciences — ▪ 2009 Introduction Geology and Geochemistry The theme of the 33rd International Geological Congress, which was held in Norway in August 2008, was “Earth System Science: Foundation for Sustainable Development.” It was attended by nearly… …
37pottery — /pot euh ree/, n., pl. potteries. 1. ceramic ware, esp. earthenware and stoneware. 2. the art or business of a potter; ceramics. 3. a place where earthen pots or vessels are made. [1475 85; POTTER1 + Y3] * * * I One of the oldest and most… …
38amphibole — /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… …
39industrial glass — Introduction solid material that is normally lustrous and transparent in appearance and that shows great durability under exposure to the natural elements. These three properties lustre, transparency, and durability make glass a favoured… …
40Hausmanit — Eigenschaften …
