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Gem Formation: How are Gemstones Created? International ...The excess is deposited in seams and cavities, not far below the surface. These silica deposits are opal. Waterborne Minerals Can Create Gem Colors. Some gemstones get their color primarily from minerals essential to their chemical composition. ... The International Gem Society (IGS) is the world's top resource for gem professionals ...
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Silica | SiO2 PubChemThe chemical compound silicon dioxide, also known as silica ... Bureau of Mines. Minerals Yearbook. 1992. Washington, DC: Government Office, 1992., p. 1172. from HSDB ... Oxalic acid is added to destroy the molybdophosphoric acid but not the molybdosilicic acid.
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What are the uses of Mica? QuoraMica is a naturally occurring stone that directly applies to a set of minerals containing silica in its highest form. This mineral is mostly used in gypsum wallboard combined compound where it acts as wadding and prevents cracking. ... What are the uses of mica in the electronic industry? ... What is the mineralogical uses of mica in India?
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