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Sillimanite
Sillimanite
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Anorthoclase
Anorthoclase
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Sillimanite
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Anorthoclase

Sillimanite and Anorthoclase 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)
 
-
-
-
2.56-2.62
Uneven
From the Greek for oblique and fracture, descriptive of the cleavage
6-6.5
(Na,K)AlSi 3O 8Michael O’Donoghue , Gems, Sixth Edition (2006)

Sillimanite and Anorthoclase Chemical Formula

While comparing Sillimanite and Anorthoclase 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 Anorthoclase chemical formula.

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Sillimanite and Anorthoclase Specific Gravity

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