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Whitlockite
Whitlockite

Sillimanite
Sillimanite



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Whitlockite
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Sillimanite

Whitlockite and Sillimanite Physical Properties

Physical Properties

Tenacity

Solubility

Durability

Specific Gravity

Fracture

Cleavage

Mohs Hardness

Chemical Composition

 
-
-
-
3.12
Uneven
None
-9999
Ca 9(Mg,Fe2+ )(PO 4) 6(PO 3OH)Anthony et al , Handbook of mineralogy (2001)
 
Tough
-
-
3.20-3.26
Splintery
{010} perfect
6-7.5
Al 2SiO 5Michael O’Donoghue , Gems, Sixth Edition (2006)

Whitlockite and Sillimanite Chemical Formula

While comparing Whitlockite 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 Whitlockite and Sillimanite chemical formula.

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Whitlockite and Sillimanite Specific Gravity

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