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Poudretteite
Poudretteite

Bustamite
Bustamite



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Poudretteite
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Bustamite

Poudretteite and Bustamite Physical Properties

1 Physical Properties
1.1 Tenacity
Brittle
Not Available
1.2 Solubility
Not Available
Partly soluble in HCl.
1.3 Durability
Not Available
Not Available
1.4 Specific Gravity
2.51-2.53
3.32-3.43
1.5 Fracture
Conchoidal, Splintery
ConchoidalArthur Thomas, Gemstones (2009), ConchoidalArthur Thomas, Gemstones (2009)
1.6 Cleavage
None
{100} perfect; {110} and {1 1 0} good; {010} poor
1.7 Mohs Hardness
5
5.5-6
1.8 Chemical Composition
KNa 2B 3Si 12O 30Michael O’Donoghue , Gems, Sixth Edition (2006)
(Ca,Mn2+ )Si 3O 9Michael O’Donoghue , Gems, Sixth Edition (2006) More from other references

Poudretteite and Bustamite Chemical Formula

While comparing Poudretteite and Bustamite 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 Poudretteite and Bustamite chemical formula.

  • Chemical formula of Poudretteite- KNa 2B 3Si 12O 30Michael O’Donoghue , Gems, Sixth Edition (2006)
  • Chemical formula of Bustamite- (Ca,Mn2+ )Si 3O 9Michael O’Donoghue , Gems, Sixth Edition (2006) More from other references

Poudretteite and Bustamite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Poudretteite and Bustamite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Poudretteite and Bustamite Optical Properties during the identification of gemstone. Specific gravity of Poudretteite is 3.32-3.43 whereas that of Bustamite is 3.32-3.43.