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Brookite
Brookite

Mellite
Mellite



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Brookite
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Mellite

Brookite and Mellite Physical Properties

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Physical Properties

Tenacity

Brittle
-

Solubility

-
-

Durability

-
-

Specific Gravity

3.87-4.141.58-1.60
1 7.18
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Fracture

Subconchoidal, Conchoidal
Conchoidal

Cleavage

Poor on {120}, in traces on {001}
{011} Imperfect

Mohs Hardness

5.5-62
2 10
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Chemical Composition

TiO 2Michael O’Donoghue , Gems, Sixth Edition (2006) More from other references
Al 2(Cl 2O 12) · 18H 2OUlrich Henn and Claudio C.

Brookite and Mellite Chemical Formula

While comparing Brookite 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 Brookite and Mellite chemical formula.

  • Chemical formula of Brookite- TiO 2Michael O’Donoghue , Gems, Sixth Edition (2006) More from other references
  • Chemical formula of Mellite- Al 2(Cl 2O 12) · 18H 2OUlrich Henn and Claudio C.

Brookite and Mellite Specific Gravity

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