Bornite and Bustamite Physical Properties
Tenacity
Brittle
Not Available
Solubility
Not Available
Partly soluble in HCl.
Durability
Not Available
Not Available
Specific Gravity
5.06-5.08
3.32-3.43
Fracture
Uneven, Subconchoidal, Conchoidal, Brittle
ConchoidalArthur Thomas, Gemstones (2009), ConchoidalArthur Thomas, Gemstones (2009)
Cleavage
Poor on [111].
{100} perfect; {110} and {1 1 0} good; {010} poor
Mohs Hardness
3-3.25
5.5-6
Chemical Composition
Cu5FeS4
(Ca,Mn2+ )Si 3O 9Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Bornite and Bustamite Chemical Formula
While comparing Bornite and Bustamite 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 Bornite and Bustamite chemical formula.
- Chemical formula of Bornite- Cu5FeS4
- Chemical formula of Bustamite- (Ca,Mn2+ )Si 3O 9Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Bornite and Bustamite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Bornite and Bustamite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Bornite and Bustamite Optical Properties during the identification of gemstone. Specific gravity of Bornite is 3.32-3.43 whereas that of Bustamite is 3.32-3.43.