Quartz: Revision history

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27 June 2019

  • curprev 20:2620:26, 27 June 2019‎ Admin talk contribs‎ 707 bytes +707‎ Created page with "{{Mineral |name=Quartz |freq=common |hardness=7 |density=2.65 |chemf=SiO2 }} Quartz is a mineral composed entirely of silicon dioxide. Both the "rock crystal" form and the..."
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