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Biotite
Biotite

Prase
Prase



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Biotite
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Prase

Biotite and Prase 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
2.7-3.32.64-2.69
Amber
1 7.18
1.5 Fracture
Uneven, Even, Yellow, White
Gems, Sixth Edition (2006), Gems, Sixth Edition (2006)
1.6 Cleavage
Perfect on the {001}
Not Available
1.7 Mohs Hardness
2.5-3.07
Amber
2 10
1.8 Chemical Composition
K(Mg,Fe++)3[AlSi3O10(OH,F)2
SiO 2Michael O’Donoghue , Gems, Sixth Edition (2006)

Biotite and Prase Chemical Formula

While comparing Biotite and Prase 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 Prase chemical formula.

  • Chemical formula of Biotite- K(Mg,Fe++)3[AlSi3O10(OH,F)2
  • Chemical formula of Prase- SiO 2Michael O’Donoghue , Gems, Sixth Edition (2006)

Biotite and Prase Specific Gravity

Another important criteria for qualitative analysis of gemstones is Biotite and Prase Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Biotite and Prase Optical Properties during the identification of gemstone. Specific gravity of Biotite is 2.64-2.69 whereas that of Prase is 2.64-2.69.