Bustamite and Herderite 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
2.90-3.02
Fracture
ConchoidalArthur Thomas, Gemstones (2009), ConchoidalArthur Thomas, Gemstones (2009)
Subconchoidal, ConchoidalArthur Thomas, Gemstones (2009), Conchoidal, Brittle
Cleavage
{100} perfect; {110} and {1 1 0} good; {010} poor
Indistinct on {110}
Mohs Hardness
5.5-6
5-5.5
Chemical Composition
(Ca,Mn2+ )Si 3O 9Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
CaBePO 4(F,OH)Ulrich Henn and Claudio C.
Bustamite and Herderite Chemical Formula
While comparing Bustamite and Herderite 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 Herderite chemical formula.
- Chemical formula of Bustamite- (Ca,Mn2+ )Si 3O 9Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
- Chemical formula of Herderite- CaBePO 4(F,OH)Ulrich Henn and Claudio C.
Bustamite and Herderite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Bustamite and Herderite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Bustamite and Herderite Optical Properties during the identification of gemstone. Specific gravity of Bustamite is 2.90-3.02 whereas that of Herderite is 2.90-3.02.