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Biotite
Biotite

Calcite
Calcite



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Biotite
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Calcite

Biotite and Calcite 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
Soluble
-
2.67-2.73
Conchoidal
Perfect on [10 1 1] three directions with angle of 74° 55
3
CaCO 3Ulrich Henn and Claudio C.

Biotite and Calcite Chemical Formula

While comparing Biotite and Calcite 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 Calcite chemical formula.

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Biotite and Calcite Specific Gravity

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