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Poudretteite
Poudretteite

Brookite
Brookite



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Poudretteite
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Brookite

Poudretteite and Brookite Physical Properties

1 Physical Properties
1.1 Tenacity
Brittle
Brittle
1.2 Solubility
Not Available
Not Available
1.3 Durability
Not Available
Not Available
1.4 Specific Gravity
2.51-2.53
3.87-4.14
1.5 Fracture
Conchoidal, Splintery
Subconchoidal, ConchoidalArthur Thomas, Gemstones (2009), Conchoidal, Brittle
1.6 Cleavage
None
Poor on {120}, in traces on {001}
1.7 Mohs Hardness
5
5.5-6
1.8 Chemical Composition
KNa 2B 3Si 12O 30Michael O’Donoghue , Gems, Sixth Edition (2006)
TiO 2Michael O’Donoghue , Gems, Sixth Edition (2006) More from other references

Poudretteite and Brookite Chemical Formula

While comparing Poudretteite and Brookite 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 Brookite chemical formula.

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

Poudretteite and Brookite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Poudretteite and Brookite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Poudretteite and Brookite Optical Properties during the identification of gemstone. Specific gravity of Poudretteite is 3.87-4.14 whereas that of Brookite is 3.87-4.14.