Carnallite and Sillimanite Physical Properties

Carnallite

Sillimanite

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1 Physical Properties

1.1 Tenacity

Not Available

Tough

1.2 Solubility

Soluble

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

1.63.20-3.26

1 7.18

1.5 Fracture

Violet, Conchoidal, Brittle, Conchoidal, Brittle

Splintery

1.6 Cleavage

None

{010} perfect

1.7 Mohs Hardness

2.56-7.5

2 10

1.8 Chemical Composition

KMgCl3•6(H2O)

Al 2SiO 5Michael OâDonoghue , Gems, Sixth Edition (2006)

Carnallite and Sillimanite Chemical Formula

While comparing Carnallite 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 Carnallite and Sillimanite chemical formula.

Chemical formula of Carnallite- KMgCl3•6(H2O)
Chemical formula of Sillimanite- Al 2SiO 5Michael OâDonoghue , Gems, Sixth Edition (2006)

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Carnallite and Sillimanite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Carnallite and Sillimanite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Carnallite and Sillimanite Optical Properties during the identification of gemstone. Specific gravity of Carnallite is 3.20-3.26 whereas that of Sillimanite is 3.20-3.26.