Hackmanite and Atacamite Physical Properties
Tenacity
Not Available
Brittle
Solubility
Not Available
Not Available
Durability
Not Available
Not Available
Specific Gravity
2.27-2.33
3.745-3.776
Fracture
UnevenArthur Thomas, Gemstones (2009), UnevenArthur Thomas, Gemstones (2009)
Conchoidal, Conchoidal, Brittle
Cleavage
Not Available
Perfect on {010}, fair on {101}
Mohs Hardness
5.5-6
3-3.5
Chemical Composition
Na 8Al 6Si 6O 24Cl 2Michael OâDonoghue , Gems, Sixth Edition (2006)
Cu2Cl(OH)3
Hackmanite and Atacamite Chemical Formula
While comparing Hackmanite and Atacamite 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 Hackmanite and Atacamite chemical formula.
- Chemical formula of Hackmanite- Na 8Al 6Si 6O 24Cl 2Michael OâDonoghue , Gems, Sixth Edition (2006)
- Chemical formula of Atacamite- Cu2Cl(OH)3
Hackmanite and Atacamite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Hackmanite and Atacamite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Hackmanite and Atacamite Optical Properties during the identification of gemstone. Specific gravity of Hackmanite is 3.745-3.776 whereas that of Atacamite is 3.745-3.776.