Biotite and Piemontite Physical Properties

Biotite

Piemontite

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1 Physical Properties

1.1 Tenacity

Brittle

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

2.7-3.3Not Available

1 7.18

1.5 Fracture

Uneven, Even, Yellow, White

Uneven, Splintery

1.6 Cleavage

Perfect on the {001}

[001] good, [100] distinct

1.7 Mohs Hardness

2.5-3.06-6.5

2 10

1.8 Chemical Composition

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

Not Available

Biotite and Piemontite Chemical Formula

While comparing Biotite and Piemontite 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 Piemontite chemical formula.

Chemical formula of Biotite- K(Mg,Fe++)3[AlSi3O10(OH,F)2

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Biotite and Piemontite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Biotite and Piemontite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Biotite and Piemontite Optical Properties during the identification of gemstone. Specific gravity of Biotite is Not Available whereas that of Piemontite is Not Available.