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Omphacite
Omphacite

Nuummite
Nuummite



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Omphacite
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Nuummite
Physical Properties

Tenacity

Solubility

Durability

Specific Gravity

Fracture

Cleavage

Mohs Hardness

Chemical Composition

 
-
-
-
3.16-3.43
Uneven, Conchoidal
{110} Good, {110} Good
5-6
(Ca,Na)(Mg,Fe,Al)Si 2O 6Anthony et al , Handbook of Mineralogy (2001)
 
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-
-
3.18-3.37
Conchoidal
Perfect on 210
5.5-6
Na(Fe,Mg)7(AlSi7O22)(OH)2