SiO2
Color: various
Hardness: 7
Streak: white
Cleavage: none
Luster: vitreous
Other Properties: soluble in hydrofluoric acid
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Quartz
SiO2 Color: various Hardness: 7 Streak: white Cleavage: none Luster: vitreous Other Properties: soluble in hydrofluoric acid |
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