Quartz is the second most abundant mineral in the Earth's continental crust, after feldspar. It is made up of a continuous framework of SiO4 silicon–oxygen tetrahedra, with each oxygen being shared between two tetrahedra, giving an overall formula SiO2.
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Singles |
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Dana classification |
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Streak |
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Pleochroism |
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2V angle |
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Extinction |
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Common impurities |
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Other characteristics |
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References |
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