Hemimorphite and Biotite Physical Properties

Hemimorphite

Biotite

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Physical Properties

Tenacity

Solubility

Durability

Specific Gravity

Fracture

Cleavage

Mohs Hardness

Chemical Composition

Brittle

Soluble

3.30-3.50

Uneven, ConchoidalWalter Schumann, Conchoidal

Perfect on {110}, poor on {101}, {001} rare

Zn 4Si 2O 7(OH) 2H 2OMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references

Brittle

2.7-3.3

Uneven, Even

Perfect on the {001}

2.5-3.0

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

Hemimorphite and Biotite Chemical Formula

While comparing Hemimorphite 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 Hemimorphite and Biotite chemical formula.

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Hemimorphite and Biotite Specific Gravity

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