Atacamite and Brookite Physical Properties

Atacamite

Brookite

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1 Physical Properties

1.1 Tenacity

Brittle

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

3.745-3.7763.87-4.14

1 7.18

1.5 Fracture

Conchoidal, Conchoidal, Brittle

Subconchoidal, ConchoidalArthur Thomas, Gemstones (2009), Conchoidal, Brittle

1.6 Cleavage

Perfect on {010}, fair on {101}

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

1.7 Mohs Hardness

3-3.55.5-6

2 10

1.8 Chemical Composition

Cu2Cl(OH)3

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

Atacamite and Brookite Chemical Formula

While comparing Atacamite 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 Atacamite and Brookite chemical formula.

Chemical formula of Atacamite- Cu2Cl(OH)3
Chemical formula of Brookite- TiO 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

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Atacamite and Brookite Specific Gravity

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