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Biotite
Biotite

Cat s Eye
Cat s Eye



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Biotite
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Cat s Eye

Biotite and Cat s Eye Physical Properties

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1 Physical Properties
1.1 Tenacity
Brittle
Not Available
1.2 Solubility
Not Available
Not Available
1.3 Durability
Not Available
Not Available
1.4 Specific Gravity
2.7-3.3
3.5-3.8
1.5 Fracture
Uneven, Even, Yellow, White
Not Available
1.6 Cleavage
Perfect on the {001}
1,1 ; 3,2
1.7 Mohs Hardness
2.5-3.0
8.5
1.8 Chemical Composition
K(Mg,Fe++)3[AlSi3O10(OH,F)2
BeAl 2 O 4

Biotite and Cat s Eye Chemical Formula

While comparing Biotite and Cat s 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 Cat s Eye chemical formula.

  • Chemical formula of Biotite- K(Mg,Fe++)3[AlSi3O10(OH,F)2
  • Chemical formula of Cat s Eye- BeAl 2 O 4

Biotite and Cat s Eye Specific Gravity

Another important criteria for qualitative analysis of gemstones is Biotite and Cat s Eye Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Biotite and Cat s Eye Optical Properties during the identification of gemstone. Specific gravity of Biotite is 3.5-3.8 whereas that of Cat s Eye is 3.5-3.8.