Bustamite and Galena Physical Properties
Tenacity
Not Available
Brittle
Solubility
Partly soluble in HCl.
Not Available
Durability
Not Available
Not Available
Specific Gravity
3.32-3.43
6.23
Fracture
ConchoidalArthur Thomas, Gemstones (2009), ConchoidalArthur Thomas, Gemstones (2009)
Subconchoidal, Brittle, Metallic
Cleavage
{100} perfect; {110} and {1 1 0} good; {010} poor
Cubic perfect on [001], parting on [111]
Mohs Hardness
5.5-6
2.5-2.75
Chemical Composition
(Ca,Mn2+ )Si 3O 9Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
PbS
Bustamite and Galena Chemical Formula
While comparing Bustamite and Galena 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 Galena chemical formula.
- Chemical formula of Bustamite- (Ca,Mn2+ )Si 3O 9Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
- Chemical formula of Galena- PbS
Bustamite and Galena Specific Gravity
Another important criteria for qualitative analysis of gemstones is Bustamite and Galena Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Bustamite and Galena Optical Properties during the identification of gemstone. Specific gravity of Bustamite is 6.23 whereas that of Galena is 6.23.