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Adamite
Adamite

Sillimanite
Sillimanite



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Adamite
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Sillimanite

Adamite and Sillimanite Physical Properties

Physical Properties

Tenacity

Solubility

Durability

Specific Gravity

Fracture

Cleavage

Mohs Hardness

Chemical Composition

 
Brittle
-
-
4.32-4.48
Uneven, Subconchoidal, Conchoidal
{101}, good; {010}, poor
3.5
Zn 2(AsO 4)(OH)Michael O’Donoghue , Gems, Sixth edition (2006)
 
Tough
-
-
3.20-3.26
Splintery
{010} perfect
6-7.5
Al 2SiO 5Michael O’Donoghue , Gems, Sixth Edition (2006)

Adamite and Sillimanite Chemical Formula

While comparing Adamite 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 Adamite and Sillimanite chemical formula.

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Adamite and Sillimanite Specific Gravity

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