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Atacamite
Atacamite

Thomsonite
Thomsonite



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Atacamite
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Thomsonite

Atacamite and Thomsonite Physical Properties

Physical Properties

Tenacity

Brittle
-

Solubility

-
-

Durability

-
-

Specific Gravity

3.745-3.7762.25-2.40
1 7.18
👆🏻

Fracture

Conchoidal
-

Cleavage

Perfect on {010}, fair on {101}
perfect on {010}; good on {100}

Mohs Hardness

3-3.55-5.5
2 10
👆🏻

Chemical Composition

Cu2Cl(OH)3
NaCa 2Al 5Si 5O 20 · 6H 2OMichael O’Donoghue , Gems, Sixth Edition (2006) More from other references

Atacamite and Thomsonite Chemical Formula

While comparing Atacamite and Thomsonite 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 Thomsonite chemical formula.

  • Chemical formula of Atacamite- Cu2Cl(OH)3
  • Chemical formula of Thomsonite- NaCa 2Al 5Si 5O 20 · 6H 2OMichael O’Donoghue , Gems, Sixth Edition (2006) More from other references

Atacamite and Thomsonite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Atacamite and Thomsonite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Atacamite and Thomsonite Optical Properties during the identification of gemstone. Specific gravity of Atacamite is 2.25-2.40 whereas that of Thomsonite is 2.25-2.40.