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Biotite
Biotite

Microcline
Microcline



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Biotite
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Microcline

Biotite and Microcline Physical Properties

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
 
-
-
-
2.55-2.63
Uneven
{001} Perfect, {010} Good
6-6.5
KAlSi 3O 8Arthur Thomas , Gemstones (2009)

Biotite and Microcline Chemical Formula

While comparing Biotite and Microcline 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 Microcline chemical formula.

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Biotite and Microcline Specific Gravity

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