Norbergite and Biotite Physical Properties

Norbergite

Biotite

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Physical Properties

Tenacity

Solubility

Durability

Specific Gravity

Fracture

Cleavage

Mohs Hardness

Chemical Composition

3.177

Uneven, Conchoidal

{???} Distinct

6-6.5

Mg 3(SiO 4)(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

Norbergite and Biotite Chemical Formula

While comparing Norbergite 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 Norbergite and Biotite chemical formula.

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Norbergite and Biotite Specific Gravity

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