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Almandine Garnet
Almandine Garnet

Biotite
Biotite



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Almandine Garnet
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Biotite

Almandine Garnet and Biotite Physical Properties

Physical Properties

Tenacity

-
Brittle

Solubility

-
-

Durability

-
-

Specific Gravity

4.32.7-3.3
1 7.18
👆🏻

Fracture

-
Uneven, Even

Cleavage

None.
Perfect on the {001}

Mohs Hardness

7.5-8.52.5-3.0
2 10
👆🏻

Chemical Composition

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

Almandine Garnet and Biotite Chemical Formula

While comparing Almandine Garnet 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 Almandine Garnet and Biotite chemical formula.

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

Almandine Garnet and Biotite Specific Gravity

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