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Biotite
Biotite

Almandine Garnet
Almandine Garnet



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Biotite
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Almandine Garnet

Biotite and Almandine Garnet Physical Properties

Physical Properties

Tenacity

Brittle
-

Solubility

-
-

Durability

-
-

Specific Gravity

2.7-3.34.3
1 7.18
👆🏻

Fracture

Uneven, Even
-

Cleavage

Perfect on the {001}
None.

Mohs Hardness

2.5-3.07.5-8.5
2 10
👆🏻

Chemical Composition

K(Mg,Fe++)3[AlSi3O10(OH,F)2
Fe3Al2Si3O12

Biotite and Almandine Garnet Chemical Formula

While comparing Biotite and Almandine Garnet 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 Almandine Garnet chemical formula.

  • Chemical formula of Biotite- K(Mg,Fe++)3[AlSi3O10(OH,F)2
  • Chemical formula of Almandine Garnet- Fe3Al2Si3O12

Biotite and Almandine Garnet Specific Gravity

Another important criteria for qualitative analysis of gemstones is Biotite and Almandine Garnet Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Biotite and Almandine Garnet Optical Properties during the identification of gemstone. Specific gravity of Biotite is 4.3 whereas that of Almandine Garnet is 4.3.