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Blue spinel
Blue spinel

Biotite
Biotite



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Blue spinel
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Biotite

Blue spinel and Biotite Physical Properties

Physical Properties

Tenacity

Solubility

Durability

Specific Gravity

Fracture

Cleavage

Mohs Hardness

Chemical Composition

 
-
-
-
-9999
-
None
-9999
MgAl2O4
 
Brittle
-
-
2.7-3.3
Uneven, Even
Perfect on the {001}
2.5-3.0
K(Mg,Fe++)3[AlSi3O10(OH,F)2

Blue spinel and Biotite Chemical Formula

While comparing Blue spinel 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 Blue spinel and Biotite chemical formula.

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Blue spinel and Biotite Specific Gravity

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