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Apophyllite
Apophyllite

Sillimanite
Sillimanite



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Apophyllite
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Sillimanite

Apophyllite and Sillimanite Physical Properties

Physical Properties

Tenacity

Solubility

Durability

Specific Gravity

Fracture

Cleavage

Mohs Hardness

Chemical Composition

 
-
-
-
2.30-2.50
Uneven
Perfect on (001)
4.5-5
KCa 4Si 8O 20(F,OH) · 8H 2OUlrich Henn and Claudio C.
 
Tough
-
-
3.20-3.26
Splintery
{010} perfect
6-7.5
Al 2SiO 5Michael O’Donoghue , Gems, Sixth Edition (2006)

Apophyllite and Sillimanite Chemical Formula

While comparing Apophyllite 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 Apophyllite and Sillimanite chemical formula.

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Apophyllite and Sillimanite Specific Gravity

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