Biotite and Jade Physical Properties

Biotite

Jade

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Physical Properties

Tenacity

Brittle

Solubility

Durability

Specific Gravity

2.7-3.32.90-3.38

1 7.18

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Fracture

Uneven, Even

Splintery

Cleavage

Perfect on the {001}

1 or 2,2 prismatic.

Mohs Hardness

2.5-3.06-7

2 10

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Chemical Composition

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

Nephrite: Ca₂(Mg,Fe)₅Si₈O₂₂(OH)₂ Jadeite: NaAlSi₂O₆

Biotite and Jade Chemical Formula

While comparing Biotite and Jade 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 Jade chemical formula.

Chemical formula of Biotite- K(Mg,Fe++)3[AlSi3O10(OH,F)2
Chemical formula of Jade- Nephrite: Ca₂(Mg,Fe)₅Si₈O₂₂(OH)₂ Jadeite: NaAlSi₂O₆

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Biotite and Jade Specific Gravity

Another important criteria for qualitative analysis of gemstones is Biotite and Jade Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Biotite and Jade Optical Properties during the identification of gemstone. Specific gravity of Biotite is 2.90-3.38 whereas that of Jade is 2.90-3.38.