Microlite and Sillimanite Physical Properties

Microlite

Sillimanite

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Physical Properties

Tenacity

Tough

Solubility

Durability

Specific Gravity

5.53.20-3.26

1 7.18

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Fracture

Conchoidal

Splintery

Cleavage

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

{010} perfect

Mohs Hardness

5-5.56-7.5

2 10

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Chemical Composition

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

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

Microlite and Sillimanite Chemical Formula

While comparing Microlite 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 Microlite and Sillimanite chemical formula.

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

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Microlite and Sillimanite Specific Gravity

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