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Covellite
Covellite

Rhodolite
Rhodolite



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Rhodolite
Physical Properties

Tenacity

Solubility

Durability

Specific Gravity

Fracture

Cleavage

Mohs Hardness

Chemical Composition

 
Flexible
-
-
4.6-4.76
-
Perfect on {0001}
-9999
CuSMichael O’Donoghue , Gems, Sixth edition (2006) More from other references
 
-
-
-
3.84
Conchoidal
none, may show indistinct parting
7-7.5
(Mg,Fe)3Al2Si3O12