Biotite and Tigers Eye Physical Properties

Biotite

Tigers Eye

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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

2.7-3.32.58-2.64

1 7.18

1.5 Fracture

Uneven, Even, Yellow, White

Gems, Sixth Edition (2006)

1.6 Cleavage

Perfect on the {001}

Indiscernible

1.7 Mohs Hardness

2.5-3.06.5-7

2 10

1.8 Chemical Composition

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

SiO₂

Biotite and Tigers Eye Chemical Formula

While comparing Biotite and Tigers Eye 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 Tigers Eye chemical formula.

Chemical formula of Biotite- K(Mg,Fe++)3[AlSi3O10(OH,F)2
Chemical formula of Tigers Eye- SiO₂

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Biotite and Tigers Eye Specific Gravity

Another important criteria for qualitative analysis of gemstones is Biotite and Tigers Eye Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Biotite and Tigers Eye Optical Properties during the identification of gemstone. Specific gravity of Biotite is 2.58-2.64 whereas that of Tigers Eye is 2.58-2.64.