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Sillimanite
Sillimanite

Hemimorphite
Hemimorphite



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Sillimanite
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Hemimorphite

Sillimanite and Hemimorphite 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
-
3.30-3.50
Uneven, ConchoidalWalter Schumann, Conchoidal
Perfect on {110}, poor on {101}, {001} rare
5
Zn 4Si 2O 7(OH) 2H 2OMichael O’Donoghue , Gems, Sixth Edition (2006) More from other references

Sillimanite and Hemimorphite Chemical Formula

While comparing Sillimanite and Hemimorphite 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 Hemimorphite chemical formula.

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Sillimanite and Hemimorphite Specific Gravity

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