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Biotite
Biotite

Girasol
Girasol



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Biotite
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Girasol

Biotite and Girasol 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
 
-
-
-
1.98-2.50
Conchoidal
None
5.5-6.5
SiO 2 · nH 2OWalter Schumann , Gemstones of the world (2001)

Biotite and Girasol Chemical Formula

While comparing Biotite and Girasol 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 Girasol chemical formula.

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Biotite and Girasol Specific Gravity

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