Bustamite and Atacamite Physical Properties
Tenacity
Not Available
Brittle
Solubility
Partly soluble in HCl.
Not Available
Durability
Not Available
Not Available
Specific Gravity
3.32-3.43
3.745-3.776
Fracture
ConchoidalArthur Thomas, Gemstones (2009), ConchoidalArthur Thomas, Gemstones (2009)
Conchoidal, Conchoidal, Brittle
Cleavage
{100} perfect; {110} and {1 1 0} good; {010} poor
Perfect on {010}, fair on {101}
Mohs Hardness
5.5-6
3-3.5
Chemical Composition
(Ca,Mn2+ )Si 3O 9Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Cu2Cl(OH)3
Bustamite and Atacamite Chemical Formula
While comparing Bustamite 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 Bustamite and Atacamite chemical formula.
- Chemical formula of Bustamite- (Ca,Mn2+ )Si 3O 9Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
- Chemical formula of Atacamite- Cu2Cl(OH)3
Bustamite and Atacamite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Bustamite and Atacamite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Bustamite and Atacamite Optical Properties during the identification of gemstone. Specific gravity of Bustamite is 3.745-3.776 whereas that of Atacamite is 3.745-3.776.