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Atacamite
Atacamite

Polyhalite
Polyhalite



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Atacamite
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Polyhalite

Atacamite and Polyhalite Physical Properties

1 Physical Properties
1.1 Tenacity
Brittle
Brittle
1.2 Solubility
Not Available
Soluble
1.3 Durability
Not Available
Not Available
1.4 Specific Gravity
3.745-3.7762.78
Amber
1 7.18
1.5 Fracture
Conchoidal, Conchoidal, Brittle
Conchoidal, Brittle
1.6 Cleavage
Perfect on {010}, fair on {101}
Perfect on {10 1 }; parting on {010}
1.7 Mohs Hardness
3-3.53.5
Amber
2 10
1.8 Chemical Composition
Cu2Cl(OH)3
Not Available

Atacamite and Polyhalite Chemical Formula

While comparing Atacamite and Polyhalite 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 Polyhalite chemical formula.

  • Chemical formula of Atacamite- Cu2Cl(OH)3
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Atacamite and Polyhalite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Atacamite and Polyhalite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Atacamite and Polyhalite Optical Properties during the identification of gemstone. Specific gravity of Atacamite is 2.78 whereas that of Polyhalite is 2.78.