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Langbeinite
Langbeinite

Sillimanite
Sillimanite



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Langbeinite
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Sillimanite

Langbeinite and Sillimanite Physical Properties

Physical Properties

Tenacity

Solubility

Durability

Specific Gravity

Fracture

Cleavage

Mohs Hardness

Chemical Composition

 
Brittle
Slowly dissolves in water
-
-9999
Conchoidal
None
3.5-4
K2Mg2(SO4)3
 
Tough
-
-
3.20-3.26
Splintery
{010} perfect
6-7.5
Al 2SiO 5Michael O’Donoghue , Gems, Sixth Edition (2006)

Langbeinite and Sillimanite Chemical Formula

While comparing Langbeinite 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 Langbeinite and Sillimanite chemical formula.

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Langbeinite and Sillimanite Specific Gravity

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