Bustamite and Phlogopite Physical Properties
Tenacity
Not Available
Tough
Solubility
Partly soluble in HCl.
Not Available
Durability
Not Available
Not Available
Specific Gravity
3.32-3.43
2.78-2.85
Fracture
ConchoidalArthur Thomas, Gemstones (2009), ConchoidalArthur Thomas, Gemstones (2009)
None, Uneven
Cleavage
{100} perfect; {110} and {1 1 0} good; {010} poor
Perfect basal (001)
Mohs Hardness
5.5-6
2-2.5
Chemical Composition
(Ca,Mn2+ )Si 3O 9Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Not Available
Bustamite and Phlogopite Chemical Formula
While comparing Bustamite and Phlogopite 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 Phlogopite chemical formula.
- Chemical formula of Bustamite- (Ca,Mn2+ )Si 3O 9Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
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Bustamite and Phlogopite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Bustamite and Phlogopite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Bustamite and Phlogopite Optical Properties during the identification of gemstone. Specific gravity of Bustamite is 2.78-2.85 whereas that of Phlogopite is 2.78-2.85.