Hibonite and Brookite Physical Properties

Hibonite

Brookite

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Physical Properties

Tenacity

Brittle

Solubility

Durability

Specific Gravity

3.843.87-4.14

1 7.18

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Fracture

Subconchoidal, Conchoidal

Cleavage

{0001} good, {10 1 0} parting

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

Mohs Hardness

7.5-85.5-6

2 10

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Chemical Composition

(Ca,Ce)(Al,Ti,Mg)12O19

TiO 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

Hibonite and Brookite Chemical Formula

While comparing Hibonite and Brookite 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 Hibonite and Brookite chemical formula.

Chemical formula of Hibonite- (Ca,Ce)(Al,Ti,Mg)12O19
Chemical formula of Brookite- TiO 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

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Hibonite and Brookite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Hibonite and Brookite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Hibonite and Brookite Optical Properties during the identification of gemstone. Specific gravity of Hibonite is 3.87-4.14 whereas that of Brookite is 3.87-4.14.