Atacamite and Andalusite Physical Properties
Tenacity
Brittle
Not Available
Solubility
Not Available
Not Available
Durability
Not Available
Not Available
Specific Gravity
3.745-3.776
3.05-3.21
Fracture
Conchoidal, Conchoidal, Brittle
Uneven, Subconchoidal, Uneven, Subconchoidal, Splintery, UnevenArthur Thomas, Gemstones (2009)
Cleavage
Perfect on {010}, fair on {101}
Good on {110}, poor on {100}
Chemical Composition
Cu2Cl(OH)3
Al 2SiO 5Michael OâDonoghue , Gems, Sixth edition (2006) More from other references
Atacamite and Andalusite Chemical Formula
While comparing Atacamite and Andalusite 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 Andalusite chemical formula.
- Chemical formula of Atacamite- Cu2Cl(OH)3
- Chemical formula of Andalusite- Al 2SiO 5Michael OâDonoghue , Gems, Sixth edition (2006) More from other references
Atacamite and Andalusite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Atacamite and Andalusite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Atacamite and Andalusite Optical Properties during the identification of gemstone. Specific gravity of Atacamite is 3.05-3.21 whereas that of Andalusite is 3.05-3.21.