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Biotite
Biotite

Malachite
Malachite



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Biotite
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Malachite

Biotite and Malachite 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
 
-
-
-
3.25-4.10
Conchoidal, Uneven
Perfect on { 2 01} fair on {010}
3.5-4
Cu2CO3(OH)2

Biotite and Malachite Chemical Formula

While comparing Biotite and Malachite 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 Malachite chemical formula.

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Biotite and Malachite Specific Gravity

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