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Sillimanite
Sillimanite

Ajoite
Ajoite



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Sillimanite
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Ajoite

Sillimanite and Ajoite Physical Properties

Physical Properties

Tenacity

Solubility

Durability

Specific Gravity

Fracture

Cleavage

Mohs Hardness

Chemical Composition

 
Tough
-
-
3.20-3.26
Splintery
{010} perfect
6-7.5
Al 2SiO 5Michael O’Donoghue , Gems, Sixth Edition (2006)
 
-
Decomposed by acids
-
2.96
-
Perfect on {010}
5
(K,Na)3Cu20Al3Si29O76(OH)16•~8(H2O)

Sillimanite and Ajoite Chemical Formula

While comparing Sillimanite and Ajoite 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 Sillimanite and Ajoite chemical formula.

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Sillimanite and Ajoite Specific Gravity

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