Pyrophyllite and Bustamite Physical Properties
Solubility
-
Partly soluble in HCl.
Specific Gravity
2.65-2.90
3.32-3.43
Cleavage
{001} Perfect
{100} perfect; {110} and {1 1 0} good; {010} poor
Mohs Hardness
-9999
5.5-6
Chemical Composition
Al 2Si 4O 10(OH) 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
(Ca,Mn2+ )Si 3O 9Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Pyrophyllite and Bustamite Chemical Formula
While comparing Pyrophyllite 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 Pyrophyllite and Bustamite chemical formula.
- Chemical formula of Pyrophyllite- Al 2Si 4O 10(OH) 2Michael 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
Pyrophyllite and Bustamite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Pyrophyllite and Bustamite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Pyrophyllite and Bustamite Optical Properties during the identification of gemstone. Specific gravity of Pyrophyllite is 3.32-3.43 whereas that of Bustamite is 3.32-3.43.