Boracite and Bustamite Physical Properties
Tenacity
Brittle
Not Available
Solubility
Soluble
Partly soluble in HCl.
Durability
Not Available
Not Available
Specific Gravity
2.95-2.96
3.32-3.43
Fracture
Conchoidal, ConchoidalArthur Thomas, Gemstones (2009), Brittle, Conchoidal
ConchoidalArthur Thomas, Gemstones (2009), ConchoidalArthur Thomas, Gemstones (2009)
Cleavage
None
{100} perfect; {110} and {1 1 0} good; {010} poor
Mohs Hardness
7-7.5
5.5-6
Chemical Composition
Mg 3B 7O 13ClMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references
(Ca,Mn2+ )Si 3O 9Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Boracite and Bustamite Chemical Formula
While comparing Boracite 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 Boracite and Bustamite chemical formula.
- Chemical formula of Boracite- Mg 3B 7O 13ClMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references
- Chemical formula of Bustamite- (Ca,Mn2+ )Si 3O 9Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Boracite and Bustamite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Boracite and Bustamite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Boracite and Bustamite Optical Properties during the identification of gemstone. Specific gravity of Boracite is 3.32-3.43 whereas that of Bustamite is 3.32-3.43.