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Taaffeite
Taaffeite

Sillimanite
Sillimanite



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Taaffeite
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Sillimanite

Taaffeite and Sillimanite Physical Properties

Physical Properties

Tenacity

Solubility

Durability

Specific Gravity

Fracture

Cleavage

Mohs Hardness

Chemical Composition

 
-
-
-
3.60-3.61
Conchoidal
Imperfect/fair/absent
8-8.5
Mg 3Al 8BeO 16Walter Schumann , Gemstones of the world (2001) More from other references
 
Tough
-
-
3.20-3.26
Splintery
{010} perfect
6-7.5
Al 2SiO 5Michael O’Donoghue , Gems, Sixth Edition (2006)

Taaffeite and Sillimanite Chemical Formula

While comparing Taaffeite 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 Taaffeite and Sillimanite chemical formula.

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Taaffeite and Sillimanite Specific Gravity

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