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Thulite
Thulite

Sillimanite
Sillimanite



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Thulite
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Sillimanite

Thulite and Sillimanite 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)
 
Tough
-
-
3.20-3.26
Splintery
{010} perfect
6-7.5
Al 2SiO 5Michael O’Donoghue , Gems, Sixth Edition (2006)

Thulite and Sillimanite Chemical Formula

While comparing Thulite and Sillimanite 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 Sillimanite chemical formula.

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Thulite and Sillimanite Specific Gravity

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