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Atacamite
Atacamite

Pargasite
Pargasite



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Atacamite
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Pargasite

Atacamite and Pargasite Physical Properties

Physical Properties

Tenacity

Solubility

Durability

Specific Gravity

Fracture

Cleavage

Mohs Hardness

Chemical Composition

 
Brittle
-
-
3.745-3.776
Conchoidal
Perfect on {010}, fair on {101}
3-3.5
Cu2Cl(OH)3
 
-
-
-
3.04-3.26
Splintery, Uneven
{110} perfect
5-6
NaCa 2(Mg 4Al)Si 6Al 2O 22(OH) 2Michael O’Donoghue , Gems, Sixth Edition (2006)

Atacamite and Pargasite Chemical Formula

While comparing Atacamite and Pargasite 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 Pargasite chemical formula.

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Atacamite and Pargasite Specific Gravity

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