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Each type of mineral has a chemical composition that is what

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asked Jun 29, 2016 by mgarcia421 (120 points)

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Not sure what you want for an answer. Every mineral has a unique atomic formula with atoms that combine in concert with other atoms in certain conditions like pressure and heat. They do so because of the shared ions. Ions are charged particles of atoms which bond by certain rules. Silica is SiO2. It is plentiful. Under the correct conditons that chemical fomula forms quartz, chalcedony, agate, tigereye, opal. Even the quartz forms amethyst, rosy quartz, white quartz and such. It also forms flint and chert. They all share properties like being very hard. So hard they don't crack the way other minerals do. They form under different heat and geological pressures and conditions. The rocks mentioned above are silicates. Not all of them but just a sample

answered Jun 30, 2016 by Weasel (58,800 points)

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