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Erythrite
Erythrite

Rhyolite
Rhyolite



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Erythrite
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Rhyolite
Physical Properties

Tenacity

Solubility

Durability

Specific Gravity

Fracture

Cleavage

Mohs Hardness

Chemical Composition

 
Sectile
-
-
3.06
Sectile
Perfect on {010}; poor on {100} and { 1 02}.
-9999
Co3(AsO4)2•8(H2O)
 
-
-
-
-9999
-
None
7
70% SiO2, Al2O3, Na2O, K2O