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Smokey Quarts |
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Mineral group: Quarts
Chemistry: SiO2
Color: Smokey, Brown
Crystal system: Trigonal
Fracture: Conchoidal
Mohs Scale hardness: 7
Refractive index: 1,544-
1,553
Dispersion: 0,013
Pleochroism Present: None-
Little
Streak: White
Specific gravity: 2,63-
2,65
Other:
Common form of quarts with
its specific smokey color.
Appear in many places even if
nice quality can be rare. |
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