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Biotite
Biotite

Eosphorite
Eosphorite



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Biotite
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Eosphorite

Biotite and Eosphorite Physical Properties

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
 
-
-
-
3.05-3.08
Subconchoidal, Uneven, Conchoidal
Poor on {100}
5
Mn2+ Al(PO 4)(OH) 2H 2OMichael O’Donoghue , Gems, Sixth Edition (2006)

Biotite and Eosphorite Chemical Formula

While comparing Biotite and Eosphorite 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 Eosphorite chemical formula.

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Biotite and Eosphorite Specific Gravity

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