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Chrysoprase
Chrysoprase

Cryolite
Cryolite



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Chrysoprase
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Cryolite
Physical Properties

Tenacity

Solubility

Durability

Specific Gravity

Fracture

Cleavage

Mohs Hardness

Chemical Composition

 
-
-
-
2.58-2.64
-
None
6.5-7
SiO2 (with a high level of nickel impurities )
 
Brittle
Soluble
-
2.97
Uneven
None observed
2.5
Na 3AlF 6Ulrich Henn and Claudio C.