Atacamite and Aragonite Physical Properties
Solubility
Not Available
Dilute acid
Durability
Not Available
Not Available
Specific Gravity
3.745-3.776
2.93-2.96
Fracture
Conchoidal, Conchoidal, Brittle
Subconchoidal, ConchoidalArthur Thomas, Gemstones (2009), Conchoidal, Brittle
Cleavage
Perfect on {010}, fair on {101}
Distinct on {010}, imperfect {110} and {011}
Mohs Hardness
3-3.5
3.5-4
Chemical Composition
Cu2Cl(OH)3
CaCO 3Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Atacamite and Aragonite Chemical Formula
While comparing Atacamite and Aragonite 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 Aragonite chemical formula.
- Chemical formula of Atacamite- Cu2Cl(OH)3
- Chemical formula of Aragonite- CaCO 3Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Atacamite and Aragonite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Atacamite and Aragonite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Atacamite and Aragonite Optical Properties during the identification of gemstone. Specific gravity of Atacamite is 2.93-2.96 whereas that of Aragonite is 2.93-2.96.