General Information:
Chemical Formula:SiO2
Composition:(Molecular Weight = 60.08 gm)Silicon 46.74 %
SiOxygen 53.26 %
O Empirical Formula: (SiO2)
Environment:Sedimentary, metamorphic, and igneous rocks.
IMA Status:Approved IMA 1962
Locality:Very common mineral found world wide.
Name Origin:From the German "quarz", of uncertain origin.
Physical Properties: Cleavage:[0110] Indistinct
Color:brown, colorless, violet, gray, or yellow.
Density:2.6 - 2.65, Average = 2.62
Diaphaniety:Transparent
Habits:Crystalline - Coarse - Occurs as well-formed coarse sized crystals., Druse - Crystal growth in a cavity which results in numerous crystal tipped surfaces., Crystalline - Fine - Occurs as well-formed fine sized crystals.
Hardness:7 - Quartz
Luminescence:Triboluminescent.
Luster:Vitreous (Glassy)
Streak:white
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