Bustamite and Prehnite Physical Properties
Tenacity
Not Available
Brittle
Solubility
Partly soluble in HCl.
Not Available
Durability
Not Available
Not Available
Specific Gravity
3.32-3.43
2.80-2.95
Fracture
ConchoidalArthur Thomas, Gemstones (2009), ConchoidalArthur Thomas, Gemstones (2009)
Uneven, Yellow, White, UnevenWalter Schumann, Gemstones of the world (2001) More from other references, Brittle, Metallic
Cleavage
{100} perfect; {110} and {1 1 0} good; {010} poor
Distinct on [001]
Mohs Hardness
5.5-6
6-6.5
Chemical Composition
(Ca,Mn2+ )Si 3O 9Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Ca2Al2Si3O12(OH)
Bustamite and Prehnite Chemical Formula
While comparing Bustamite and Prehnite 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 Prehnite chemical formula.
- Chemical formula of Bustamite- (Ca,Mn2+ )Si 3O 9Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
- Chemical formula of Prehnite- Ca2Al2Si3O12(OH)
Bustamite and Prehnite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Bustamite and Prehnite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Bustamite and Prehnite Optical Properties during the identification of gemstone. Specific gravity of Bustamite is 2.80-2.95 whereas that of Prehnite is 2.80-2.95.