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