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Grandidierite
Grandidierite

Biotite
Biotite



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Grandidierite
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Biotite

Grandidierite and Biotite Physical Properties

Physical Properties

Tenacity

Solubility

Durability

Specific Gravity

Fracture

Cleavage

Mohs Hardness

Chemical Composition

 
-
-
-
2.85-3.00
Uneven
Perfect
7.5
(Mg,Fe)Al 3(BO 4)(SiO 4)OUlrich 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

Grandidierite and Biotite Chemical Formula

While comparing Grandidierite 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 Grandidierite and Biotite chemical formula.

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Grandidierite and Biotite Specific Gravity

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