Atacamite and Pyrophyllite Physical Properties

Atacamite

Pyrophyllite

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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

3.745-3.7762.65-2.90

1 7.18

1.5 Fracture

Conchoidal, Conchoidal, Brittle

Gemstones (2009), Flexible Flexible fragments.

1.6 Cleavage

Perfect on {010}, fair on {101}

{001} Perfect

1.7 Mohs Hardness

3-3.5Not Available

2 10

1.8 Chemical Composition

Cu2Cl(OH)3

Al 2Si 4O 10(OH) 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

Atacamite and Pyrophyllite Chemical Formula

While comparing Atacamite and Pyrophyllite 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 Pyrophyllite chemical formula.

Chemical formula of Atacamite- Cu2Cl(OH)3
Chemical formula of Pyrophyllite- Al 2Si 4O 10(OH) 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

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Atacamite and Pyrophyllite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Atacamite and Pyrophyllite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Atacamite and Pyrophyllite Optical Properties during the identification of gemstone. Specific gravity of Atacamite is 2.65-2.90 whereas that of Pyrophyllite is 2.65-2.90.