Biotite and Nuummite Physical Properties

Biotite

Nuummite

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1 Physical Properties

1.1 Tenacity

Brittle

Not Available

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

2.7-3.33.18-3.37

1 7.18

1.5 Fracture

Uneven, Even, Yellow, White

Conchoidal

1.6 Cleavage

Perfect on the {001}

Perfect on 210

1.7 Mohs Hardness

2.5-3.05.5-6

2 10

1.8 Chemical Composition

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

Not Available

Biotite and Nuummite Chemical Formula

While comparing Biotite and Nuummite 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 Nuummite chemical formula.

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

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Biotite and Nuummite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Biotite and Nuummite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Biotite and Nuummite Optical Properties during the identification of gemstone. Specific gravity of Biotite is 3.18-3.37 whereas that of Nuummite is 3.18-3.37.