Chiastolite and Biotite Physical Properties

Chiastolite

Biotite

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1 Physical Properties

1.1 Tenacity

Not Available

Brittle

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

3.00-3.152.7-3.3

1 7.18

1.5 Fracture

Not Available

Uneven, Even, Yellow, White

1.6 Cleavage

Not Available

Perfect on the {001}

1.7 Mohs Hardness

5-5.52.5-3.0

2 10

1.8 Chemical Composition

Al 2SiO 5Michael OâDonoghue , Gems, Sixth edition (2006)

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

Chiastolite and Biotite Chemical Formula

While comparing Chiastolite 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 Chiastolite and Biotite chemical formula.

Chemical formula of Chiastolite- Al 2SiO 5Michael OâDonoghue , Gems, Sixth edition (2006)
Chemical formula of Biotite- K(Mg,Fe++)3[AlSi3O10(OH,F)2

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Chiastolite and Biotite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Chiastolite and Biotite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Chiastolite and Biotite Optical Properties during the identification of gemstone. Specific gravity of Chiastolite is 2.7-3.3 whereas that of Biotite is 2.7-3.3.