General Information:
Chemical Formula:
SiO2
Composition:
(Molecular Weight = 60.08 gm)
Silicon 46.74 % Si
Oxygen 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
More details...