Chlorastrolite and Biotite Physical Properties

Chlorastrolite

Biotite

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Physical Properties

Tenacity

Solubility

Durability

Specific Gravity

Fracture

Cleavage

Mohs Hardness

Chemical Composition

3.1-3.5

Granular

None

5-6

Ca 2(Mg,Fe)Al 2(SiO 4)(Si 2O 7)(OH) 2 · H 2O)Arthur Thomas , Gemstones (2009)

Brittle

2.7-3.3

Uneven, Even

Perfect on the {001}

2.5-3.0

K(Mg,Fe++)3[AlSi3O10(OH,F)2

Chlorastrolite and Biotite Chemical Formula

While comparing Chlorastrolite 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 Chlorastrolite and Biotite chemical formula.

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Chlorastrolite and Biotite Specific Gravity

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