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Atacamite
Atacamite

Pollucite
Pollucite



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Atacamite
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Pollucite

Atacamite and Pollucite Physical Properties

Physical Properties

Tenacity

Brittle
Brittle

Solubility

-
Readily soluble in HF

Durability

-
-

Specific Gravity

3.745-3.7762.86-2.94
1 7.18
👆🏻

Fracture

Conchoidal
Conchoidal, Uneven

Cleavage

Perfect on {010}, fair on {101}
None observed

Mohs Hardness

3-3.56.5-7
2 10
👆🏻

Chemical Composition

Cu2Cl(OH)3
(Cs,Na)(AlSi 2O 6) · 0.5H 2OWalter Schumann , Gemstones of the world (2001) More from other references

Atacamite and Pollucite Chemical Formula

While comparing Atacamite and Pollucite 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 Pollucite chemical formula.

  • Chemical formula of Atacamite- Cu2Cl(OH)3
  • Chemical formula of Pollucite- (Cs,Na)(AlSi 2O 6) · 0.5H 2OWalter Schumann , Gemstones of the world (2001) More from other references

Atacamite and Pollucite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Atacamite and Pollucite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Atacamite and Pollucite Optical Properties during the identification of gemstone. Specific gravity of Atacamite is 2.86-2.94 whereas that of Pollucite is 2.86-2.94.