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Thulite
Thulite

Poudretteite
Poudretteite



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Thulite
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Poudretteite

Thulite and Poudretteite Physical Properties

Physical Properties

Tenacity

Solubility

Durability

Specific Gravity

Fracture

Cleavage

Mohs Hardness

Chemical Composition

 
-
-
-
3.1
Uneven, Conchoidal
Perfect {010} imperfect {100}
6-7
Ca2Al3(SiO4)3(OH)
 
Brittle
-
-
2.51-2.53
Conchoidal, Splintery
None
5
KNa 2B 3Si 12O 30Michael O’Donoghue , Gems, Sixth Edition (2006)

Thulite and Poudretteite Chemical Formula

While comparing Thulite and Poudretteite 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 Thulite and Poudretteite chemical formula.

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Thulite and Poudretteite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Thulite and Poudretteite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Thulite Vs Poudretteite during the identification of gemstone. Specific gravity of Thulite is whereas that of Poudretteite is .