Bustamite and Rubellite Physical Properties
Solubility
Partly soluble in HCl.
-
Specific Gravity
3.32-3.43
3.01-3.06
Fracture
Conchoidal
Conchoidal
Cleavage
{100} perfect; {110} and {1 1 0} good; {010} poor
Indiscernible
Mohs Hardness
5.5-6
7-7.5
Chemical Composition
(Ca,Mn2+ )Si 3O 9Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Na(Li 1.5Al 1.5)Al 6(Si 6O 18)(BO 3) 3(OH) 3(OH)Gemdat.org , Management Team (2012) Formula given for elbaite.
Bustamite and Rubellite Chemical Formula
While comparing Bustamite and Rubellite 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 Rubellite chemical formula.
- Chemical formula of Bustamite- (Ca,Mn2+ )Si 3O 9Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
- Chemical formula of Rubellite- Na(Li 1.5Al 1.5)Al 6(Si 6O 18)(BO 3) 3(OH) 3(OH)Gemdat.org , Management Team (2012) Formula given for elbaite.
Bustamite and Rubellite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Bustamite and Rubellite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Bustamite and Rubellite Optical Properties during the identification of gemstone. Specific gravity of Bustamite is 3.01-3.06 whereas that of Rubellite is 3.01-3.06.