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Demantoid
Demantoid

Biotite
Biotite



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Demantoid
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Biotite

Demantoid and Biotite Physical Properties

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Physical Properties

Tenacity

Solubility

Durability

Specific Gravity

Fracture

Cleavage

Mohs Hardness

Chemical Composition

 
-
-
-
3.77-3.95
-
Imperfect
6.5
Ca 3Fe 2(SiO 4) 3Ulrich Henn and Claudio C.
 
Brittle
-
-
2.7-3.3
Uneven, Even
Perfect on the {001}
2.5-3.0
K(Mg,Fe++)3[AlSi3O10(OH,F)2

Demantoid and Biotite Chemical Formula

While comparing Demantoid 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 Demantoid and Biotite chemical formula.

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Demantoid and Biotite Specific Gravity

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