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Sillimanite
Sillimanite

Calcite
Calcite



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Sillimanite
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Calcite

Sillimanite and Calcite 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)
 
Brittle
Soluble
-
2.67-2.73
Conchoidal
Perfect on [10 1 1] three directions with angle of 74° 55
3
CaCO 3Ulrich Henn and Claudio C.

Sillimanite and Calcite Chemical Formula

While comparing Sillimanite and Calcite 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 Calcite chemical formula.

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Sillimanite and Calcite Specific Gravity

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