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A very hard mineral composed of silica, SiO2, found worldwide in many different types of rocks, including sandstone and granite. Varieties of quartz include agate, chalcedony, chert, flint, opal, and rock crystal.
[German Quarz, from Middle High German quarc, of Slavic origin.]
quartz′ose′ (kwôrt′sōs′) adj.
(Geological Science) geology like, of, or rich in quartz
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|Adj.||1.||quartzose - relating to or made of quartz|