Brookite and Variscite Physical Properties

Brookite

Variscite

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Physical Properties

Tenacity

Brittle

Solubility

Durability

Specific Gravity

3.87-4.142.42-2.58

1 7.18

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Fracture

Subconchoidal, Conchoidal

Conchoidal, Splintery, ConchoidalWalter Schumann

Cleavage

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

[010] perfect

Mohs Hardness

5.5-64-5

2 10

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Chemical Composition

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

AlPO₄ · 2(H₂O)

Brookite and Variscite Chemical Formula

While comparing Brookite and Variscite 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 Variscite chemical formula.

Chemical formula of Brookite- TiO 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Chemical formula of Variscite- AlPO₄ · 2(H₂O)

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Brookite and Variscite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Brookite and Variscite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Brookite and Variscite Optical Properties during the identification of gemstone. Specific gravity of Brookite is 2.42-2.58 whereas that of Variscite is 2.42-2.58.