Humite and Biotite Physical Properties

Humite

Biotite

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Physical Properties

Tenacity

Solubility

Durability

Specific Gravity

Fracture

Cleavage

Mohs Hardness

Chemical Composition

Brittle

3.20-3.32

Uneven, Conchoidal

Poor

6-6.5

(Mg,Fe2+ ) 7(SiO 4) 3(F,OH) 2Anthony et al , Handbook of mineralogy (2001)

Brittle

2.7-3.3

Uneven, Even

Perfect on the {001}

2.5-3.0

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

Humite and Biotite Chemical Formula

While comparing Humite 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 Humite and Biotite chemical formula.

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Humite and Biotite Specific Gravity

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