Sillimanite and Mellite Physical Properties

Sillimanite

Mellite

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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

3.20-3.261.58-1.60

1 7.18

1.5 Fracture

Splintery

ConchoidalAnthony et al, Handbook of mineralogy (2001), ConchoidalAnthony et al, Handbook of mineralogy (2001), Conchoidal, Brittle

1.6 Cleavage

{010} perfect

{011} Imperfect

1.7 Mohs Hardness

6-7.52

2 10

1.8 Chemical Composition

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

Al 2(Cl 2O 12) · 18H 2OUlrich Henn and Claudio C.

Sillimanite and Mellite Chemical Formula

While comparing Sillimanite and Mellite 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 Mellite chemical formula.

Chemical formula of Sillimanite- Al 2SiO 5Michael OâDonoghue , Gems, Sixth Edition (2006)
Chemical formula of Mellite- Al 2(Cl 2O 12) · 18H 2OUlrich Henn and Claudio C.

Compare Blue Gemstones

Sillimanite Vs Strontium Titanate

Sillimanite Vs Starlite

Sillimanite Vs Tanzanite

Sillimanite and Mellite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Sillimanite and Mellite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Sillimanite and Mellite Optical Properties during the identification of gemstone. Specific gravity of Sillimanite is 1.58-1.60 whereas that of Mellite is 1.58-1.60.