Sillimanite and Pyroxmangite Physical Properties

Sillimanite

Pyroxmangite

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1 Physical Properties

1.1 Tenacity

Tough

Not Available

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

3.20-3.263.76-3.77

1 7.18

1.5 Fracture

Splintery

UnevenArthur Thomas, Gemstones (2009), UnevenArthur Thomas, Gemstones (2009)

1.6 Cleavage

{010} perfect

{110} Perfect, {110} Perfect

1.7 Mohs Hardness

6-7.55-6

2 10

1.8 Chemical Composition

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

(Fe,Mn) 7Si 7O 21Ulrich Henn and Claudio C.

Sillimanite and Pyroxmangite Chemical Formula

While comparing Sillimanite and Pyroxmangite 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 Pyroxmangite chemical formula.

Chemical formula of Sillimanite- Al 2SiO 5Michael OâDonoghue , Gems, Sixth Edition (2006)
Chemical formula of Pyroxmangite- (Fe,Mn) 7Si 7O 21Ulrich Henn and Claudio C.

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Sillimanite and Pyroxmangite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Sillimanite and Pyroxmangite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Sillimanite and Pyroxmangite Optical Properties during the identification of gemstone. Specific gravity of Sillimanite is 3.76-3.77 whereas that of Pyroxmangite is 3.76-3.77.