Pyroxmangite and Sillimanite Physical Properties

Pyroxmangite

Sillimanite

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1 Physical Properties

1.1 Tenacity

Not Available

Tough

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

3.76-3.773.20-3.26

1 7.18

1.5 Fracture

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

Splintery

1.6 Cleavage

{110} Perfect, {110} Perfect

{010} perfect

1.7 Mohs Hardness

5-66-7.5

2 10

1.8 Chemical Composition

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

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

Pyroxmangite and Sillimanite Chemical Formula

While comparing Pyroxmangite 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 Pyroxmangite and Sillimanite chemical formula.

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

Compare Red Gemstones

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Pyroxmangite and Sillimanite Specific Gravity

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