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Amazonite
Amazonite

Hurlbutite
Hurlbutite



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Physical Properties

Tenacity

Solubility

Durability

Specific Gravity

Fracture

Cleavage

Mohs Hardness

Chemical Composition

 
-
-
-
2.55-2.57
Uneven
2,1 basal ; 2,1 prismatic ; 3,1 pinacoidal
6-6.5
KAlSi3O8
 
-
-
-
2.90
Conchoidal
None
6
CaBe 2(PO 4) 2Michael O’Donoghue , Gems, Sixth Edition (2006)