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Turquoise
Turquoise

Rhyolite
Rhyolite



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Turquoise
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Rhyolite
Physical Properties

Tenacity

Solubility

Durability

Specific Gravity

Fracture

Cleavage

Mohs Hardness

Chemical Composition

 
-
Soluble
-
2.30-2.90
Conchoidal
Good to perfect_usually N/A
5-6
CuAl6(PO4)4(OH)8 • 4H2O
 
-
-
-
-9999
-
None
7
70% SiO2, Al2O3, Na2O, K2O