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