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Torbanite
Torbanite

Petalite
Petalite



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Torbanite
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Petalite

Torbanite and Petalite Physical Properties

Physical Properties

Tenacity

Solubility

Durability

Specific Gravity

Fracture

Cleavage

Mohs Hardness

Chemical Composition

 
-
-
-
-9999
-
None
-9999
-
 
Brittle
insoluble
-
2.40
Subconchoidal, ConchoidalWalter Schumann, Conchoidal
Perfect on {001}, poor on {201} with 38.5° angle between the two
6-6.5
LiAlSi 4O 10Michael O’Donoghue , Gems, Sixth Edition (2006) More from other references

Torbanite and Petalite Chemical Formula

While comparing Torbanite and Petalite 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 Torbanite and Petalite chemical formula.

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Torbanite and Petalite Specific Gravity

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