Colemanite and Bustamite Physical Properties
Solubility
-
Partly soluble in HCl.
Specific Gravity
2.40-2.42
3.32-3.43
Cleavage
{010} Perfect, {001} Distinct
{100} perfect; {110} and {1 1 0} good; {010} poor
Chemical Composition
Ca 2B 6O 11 · 5H 2OMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references
(Ca,Mn2+ )Si 3O 9Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Colemanite and Bustamite Chemical Formula
While comparing Colemanite 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 Colemanite and Bustamite chemical formula.
- Chemical formula of Colemanite- Ca 2B 6O 11 · 5H 2OMichael 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
Colemanite and Bustamite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Colemanite and Bustamite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Colemanite and Bustamite Optical Properties during the identification of gemstone. Specific gravity of Colemanite is 3.32-3.43 whereas that of Bustamite is 3.32-3.43.