Brookite and Diaspore Physical Properties

Brookite

Diaspore

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Physical Properties

Tenacity

Brittle

Very brittle

Solubility

insoluble

Durability

Specific Gravity

3.87-4.143.30-3.40

1 7.18

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Fracture

Subconchoidal, Conchoidal

Conchoidal

Cleavage

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

{010} perfect, {110} distinct, {100} in traces

Mohs Hardness

5.5-66.5-7

2 10

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Chemical Composition

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

AlO(OH)Walter Schumann , Gemstones of the world (2001) More from other references

Brookite and Diaspore Chemical Formula

While comparing Brookite and Diaspore 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 Diaspore chemical formula.

Chemical formula of Brookite- TiO 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Chemical formula of Diaspore- AlO(OH)Walter Schumann , Gemstones of the world (2001) More from other references

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Brookite and Diaspore Specific Gravity

Another important criteria for qualitative analysis of gemstones is Brookite and Diaspore Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Brookite and Diaspore Optical Properties during the identification of gemstone. Specific gravity of Brookite is 3.30-3.40 whereas that of Diaspore is 3.30-3.40.