Bustamite and Norbergite 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
3.177
Fracture
ConchoidalArthur Thomas, Gemstones (2009), ConchoidalArthur Thomas, Gemstones (2009)
Uneven, Uneven, ConchoidalAnthony et al, Handbook of mineralogy (2001), Conchoidal, Brittle
Cleavage
{100} perfect; {110} and {1 1 0} good; {010} poor
{???} Distinct
Mohs Hardness
5.5-6
6-6.5
Chemical Composition
(Ca,Mn2+ )Si 3O 9Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Mg 3(SiO 4)(F,OH) 2Anthony et al , Handbook of Mineralogy (2001)
Bustamite and Norbergite Chemical Formula
While comparing Bustamite and Norbergite 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 Norbergite chemical formula.
- Chemical formula of Bustamite- (Ca,Mn2+ )Si 3O 9Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
- Chemical formula of Norbergite- Mg 3(SiO 4)(F,OH) 2Anthony et al , Handbook of Mineralogy (2001)
Bustamite and Norbergite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Bustamite and Norbergite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Bustamite and Norbergite Optical Properties during the identification of gemstone. Specific gravity of Bustamite is 3.177 whereas that of Norbergite is 3.177.