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Biotite
Biotite

Chromite
Chromite



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Biotite
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Chromite

Biotite and Chromite Physical Properties

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Physical Properties

Tenacity

Solubility

Durability

Specific Gravity

Fracture

Cleavage

Mohs Hardness

Chemical Composition

 
Brittle
-
-
2.7-3.3
Uneven, Even
Perfect on the {001}
2.5-3.0
K(Mg,Fe++)3[AlSi3O10(OH,F)2
 
Brittle
-
-
4.5-4.8
Uneven
None, parting may develop along {111}
5.5
Fe++Cr2O4

Biotite and Chromite Chemical Formula

While comparing Biotite and Chromite physical properties, the important data you should know is its chemical composition. Since chemical formula defines the molecular structure of the crystal, most of the physical properties like color, tenacity, solubility are governed by Biotite and Chromite chemical formula.

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Biotite and Chromite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Biotite and Chromite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Biotite Vs Chromite during the identification of gemstone. Specific gravity of Biotite is whereas that of Chromite is .