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Colemanite
Colemanite

Biotite
Biotite



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Colemanite
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Biotite

Colemanite and Biotite Physical Properties

Physical Properties

Tenacity

Solubility

Durability

Specific Gravity

Fracture

Cleavage

Mohs Hardness

Chemical Composition

 
-
-
-
2.40-2.42
-
{010} Perfect, {001} Distinct
4.5
Ca 2B 6O 11 · 5H 2OMichael O’Donoghue , Gems, Sixth Edition (2006) More from other references
 
Brittle
-
-
2.7-3.3
Uneven, Even
Perfect on the {001}
2.5-3.0
K(Mg,Fe++)3[AlSi3O10(OH,F)2

Colemanite and Biotite Chemical Formula

While comparing Colemanite and Biotite 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 Colemanite and Biotite chemical formula.

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Colemanite and Biotite Specific Gravity

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