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Chromite
Chromite
☒

Nuummite
Nuummite
☒



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Chromite
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Physical Properties

Tenacity

Solubility

Durability

Specific Gravity

Fracture

Cleavage

Mohs Hardness

Chemical Composition

 
Brittle
-
-
4.5-4.8
Uneven
None, parting may develop along {111}
5.5
Fe++Cr2O4
 
-
-
-
3.18-3.37
Conchoidal
Perfect on 210
5.5-6
Na(Fe,Mg)7(AlSi7O22)(OH)2

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Nuummite Vs Pyrrhotite

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