Aegirine and Sillimanite Physical Properties

Aegirine

Sillimanite

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1 Physical Properties

1.1 Tenacity

Brittle

Tough

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

3.50-3.603.20-3.26

1 7.18

1.5 Fracture

Uneven, Brittle, Metallic, Brittle, Metallic, Brittle, Metallic

Splintery

1.6 Cleavage

Good on {110}, (110) ^ (1 1 0) ≈87°; parting on {100}

{010} perfect

1.7 Mohs Hardness

66-7.5

2 10

1.8 Chemical Composition

(Na,Fe,Ca)Si 2O 6Ulrich Henn and Claudio C.

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

Aegirine and Sillimanite Chemical Formula

While comparing Aegirine 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 Aegirine and Sillimanite chemical formula.

Chemical formula of Aegirine- (Na,Fe,Ca)Si 2O 6Ulrich Henn and Claudio C.
Chemical formula of Sillimanite- Al 2SiO 5Michael OâDonoghue , Gems, Sixth Edition (2006)

Compare Gems for Pisces

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Aegirine Vs Jade

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Aegirine and Sillimanite Specific Gravity

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