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Powellite
Powellite

Biotite
Biotite



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Biotite

Powellite and Biotite Physical Properties

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1 Physical Properties
1.1 Tenacity
Not Available
Brittle
1.2 Solubility
Not Available
Not Available
1.3 Durability
Not Available
Not Available
1.4 Specific Gravity
4.232.7-3.3
Amber
1 7.18
1.5 Fracture
UnevenAnthony et al, Handbook of mineralogy (2001), UnevenAnthony et al, Handbook of mineralogy (2001), Brittle, Conchoidal
Uneven, Even, Yellow, White
1.6 Cleavage
{111} Distinct
Perfect on the {001}
1.7 Mohs Hardness
3.5-42.5-3.0
Amber
2 10
1.8 Chemical Composition
CaMoO 4Michael O’Donoghue , Gems, Sixth Edition (2006)
K(Mg,Fe++)3[AlSi3O10(OH,F)2

Powellite and Biotite Chemical Formula

While comparing Powellite 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 Powellite and Biotite chemical formula.

  • Chemical formula of Powellite- CaMoO 4Michael O’Donoghue , Gems, Sixth Edition (2006)
  • Chemical formula of Biotite- K(Mg,Fe++)3[AlSi3O10(OH,F)2

Powellite and Biotite Specific Gravity

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