Biotite and Wernerite Physical Properties

Biotite

Wernerite

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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

2.50-2.80

Perfect

5-6.5

Na 4(Al,Si) 12O 24Cl to Ca 4(Si,Al) 12O 24(CO 3,SO 4)Arthur Thomas , Gemstones (2009)

Biotite and Wernerite Chemical Formula

While comparing Biotite and Wernerite 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 Wernerite chemical formula.

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Biotite and Wernerite Specific Gravity

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