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Covellite
Covellite
☒

Friedelite
Friedelite
☒



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Covellite
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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
 
-
-
-
3.06-3.19
Uneven
{010} Perfect
4-5
Mn 8Si 6O 15(OH,Cl) 10Ulrich Henn and Claudio C.

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