Bustamite and Spinel Physical Properties
Tenacity
Not Available
Not Available
Solubility
Partly soluble in HCl.
none
Durability
Not Available
Not Available
Specific Gravity
3.32-3.43
3.64-3.66
Fracture
ConchoidalArthur Thomas, Gemstones (2009), ConchoidalArthur Thomas, Gemstones (2009)
Conchoidal, Uneven, ConchoidalArthur Thomas, Gemstones (2009)
Cleavage
{100} perfect; {110} and {1 1 0} good; {010} poor
None, but may exhibit slight parting
Chemical Composition
(Ca,Mn2+ )Si 3O 9Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
MgAl2O4
Bustamite and Spinel Chemical Formula
While comparing Bustamite and Spinel 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 Spinel chemical formula.
- Chemical formula of Bustamite- (Ca,Mn2+ )Si 3O 9Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
- Chemical formula of Spinel- MgAl2O4
Bustamite and Spinel Specific Gravity
Another important criteria for qualitative analysis of gemstones is Bustamite and Spinel Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Bustamite and Spinel Optical Properties during the identification of gemstone. Specific gravity of Bustamite is 3.64-3.66 whereas that of Spinel is 3.64-3.66.