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Glossary

quartz
definition:quartz

A colorless mineral often tinted by impurities, found in igneous, sedimentary, and metamorphic rocks. Quartz is the second most abundant mineral in the Earth's continental crust, after feldspar. Quartz is one of the most widely used natural materials. Its usefulness can be linked to its physical and chemical properties. Quartz is transparent to nearly opaque and due to a wide range of imupirities and mineral inclusions its colors range from colorless, white, rose-pink to rose-red, yellow to yellowish brown, green, blue, bluish violet, brown to black. It is often zoned or mottled.

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