Sillimanite and Microlite Physical Properties

Sillimanite

Microlite

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Physical Properties

Tenacity

Tough

Solubility

Durability

Specific Gravity

3.20-3.265.5

1 7.18

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Fracture

Splintery

Conchoidal

Cleavage

{010} perfect

{111} Indistinct, {111} Indistinct, {111} Indistinct

Mohs Hardness

6-7.55-5.5

2 10

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Chemical Composition

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

(Ca,Na) 2Ta 2O 6(O,OH,F)Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

Sillimanite and Microlite Chemical Formula

While comparing Sillimanite and Microlite 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 Microlite chemical formula.

Chemical formula of Sillimanite- Al 2SiO 5Michael OâDonoghue , Gems, Sixth Edition (2006)
Chemical formula of Microlite- (Ca,Na) 2Ta 2O 6(O,OH,F)Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

Compare Blue Gemstones

Sillimanite Vs Tortoiseshell

Sillimanite Vs Verdite

Sillimanite Vs Violane

Sillimanite and Microlite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Sillimanite and Microlite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Sillimanite and Microlite Optical Properties during the identification of gemstone. Specific gravity of Sillimanite is 5.5 whereas that of Microlite is 5.5.