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Biotite
Biotite

Wulfenite
Wulfenite



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Biotite
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Wulfenite

Biotite and Wulfenite 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
-
-
6.50-7.00
Irregular, Conchoidal
On {011}, distinct; on {001}, {013}, indistinct
3
PbMoO 4Walter Schumann , Gemstones of the world (2001)

Biotite and Wulfenite Chemical Formula

While comparing Biotite and Wulfenite 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 Wulfenite chemical formula.

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Biotite and Wulfenite Specific Gravity

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