Turquoise and Brookite Physical Properties

Turquoise

Brookite

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Physical Properties

Tenacity

Brittle

Solubility

Soluble

Durability

Specific Gravity

2.30-2.903.87-4.14

1 7.18

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Fracture

Conchoidal

Subconchoidal, Conchoidal

Cleavage

Good to perfect_usually N/A

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

Mohs Hardness

5-65.5-6

2 10

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Chemical Composition

CuAl₆(PO₄)₄(OH)₈ • 4H₂O

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

Turquoise and Brookite Chemical Formula

While comparing Turquoise 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 Turquoise and Brookite chemical formula.

Chemical formula of Turquoise- CuAl₆(PO₄)₄(OH)₈ • 4H₂O
Chemical formula of Brookite- TiO 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

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Turquoise and Brookite Specific Gravity

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