Bustamite and Astrophyllite Physical Properties
Tenacity
Not Available
Not Available
Solubility
Partly soluble in HCl.
Not Available
Durability
Not Available
Not Available
Specific Gravity
3.32-3.43
3.2-3.4
Fracture
ConchoidalArthur Thomas, Gemstones (2009), ConchoidalArthur Thomas, Gemstones (2009)
Uneven, Brittle, Metallic
Cleavage
{100} perfect; {110} and {1 1 0} good; {010} poor
Perfect on [001] imperfect on [100]
Chemical Composition
(Ca,Mn2+ )Si 3O 9Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
(K,Na) 3(Fe2+ ,Mn) 7Ti 2Si 8O 24(O,OH) 7Anthony et al , Handbook of mineralogy (2001)
Bustamite and Astrophyllite Chemical Formula
While comparing Bustamite and Astrophyllite 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 Astrophyllite chemical formula.
- Chemical formula of Bustamite- (Ca,Mn2+ )Si 3O 9Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
- Chemical formula of Astrophyllite- (K,Na) 3(Fe2+ ,Mn) 7Ti 2Si 8O 24(O,OH) 7Anthony et al , Handbook of mineralogy (2001)
Bustamite and Astrophyllite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Bustamite and Astrophyllite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Bustamite and Astrophyllite Optical Properties during the identification of gemstone. Specific gravity of Bustamite is 3.2-3.4 whereas that of Astrophyllite is 3.2-3.4.