Atacamite and Apophyllite Physical Properties

Atacamite

Apophyllite

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1 Physical Properties

1.1 Tenacity

Brittle

Not Available

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

3.745-3.7762.30-2.50

1 7.18

1.5 Fracture

Conchoidal, Conchoidal, Brittle

Uneven, UnevenArthur Thomas, Gemstones (2009)

1.6 Cleavage

Perfect on {010}, fair on {101}

Perfect on (001)

1.7 Mohs Hardness

3-3.54.5-5

2 10

1.8 Chemical Composition

Cu2Cl(OH)3

KCa 4Si 8O 20(F,OH) · 8H 2OUlrich Henn and Claudio C.

Atacamite and Apophyllite Chemical Formula

While comparing Atacamite and Apophyllite 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 Apophyllite chemical formula.

Chemical formula of Atacamite- Cu2Cl(OH)3
Chemical formula of Apophyllite- KCa 4Si 8O 20(F,OH) · 8H 2OUlrich Henn and Claudio C.

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Atacamite and Apophyllite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Atacamite and Apophyllite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Atacamite and Apophyllite Optical Properties during the identification of gemstone. Specific gravity of Atacamite is 2.30-2.50 whereas that of Apophyllite is 2.30-2.50.