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Biotite
Biotite

Demantoid
Demantoid



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Biotite
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Demantoid

Biotite and Demantoid 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
 
-
-
-
3.77-3.95
-
Imperfect
6.5
Ca 3Fe 2(SiO 4) 3Ulrich Henn and Claudio C.

Biotite and Demantoid Chemical Formula

While comparing Biotite and Demantoid 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 Demantoid chemical formula.

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Biotite and Demantoid Specific Gravity

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