Bustamite and Ettringite Physical Properties
Tenacity
Not Available
Not Available
Solubility
Partly soluble in HCl.
Partially soluble in water
Durability
Not Available
Not Available
Specific Gravity
3.32-3.43
1.77
Fracture
ConchoidalArthur Thomas, Gemstones (2009), ConchoidalArthur Thomas, Gemstones (2009)
Not Available
Cleavage
{100} perfect; {110} and {1 1 0} good; {010} poor
Perfect on {10 1 0}
Mohs Hardness
5.5-6
2-2.5
Chemical Composition
(Ca,Mn2+ )Si 3O 9Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Ca 6Al 2(SO 4) 3(OH) 12 26H 2OMichael OâDonoghue , Gems, Sixth Edition (2006)
Bustamite and Ettringite Chemical Formula
While comparing Bustamite and Ettringite 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 Ettringite chemical formula.
- Chemical formula of Bustamite- (Ca,Mn2+ )Si 3O 9Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
- Chemical formula of Ettringite- Ca 6Al 2(SO 4) 3(OH) 12 26H 2OMichael OâDonoghue , Gems, Sixth Edition (2006)
Bustamite and Ettringite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Bustamite and Ettringite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Bustamite and Ettringite Optical Properties during the identification of gemstone. Specific gravity of Bustamite is 1.77 whereas that of Ettringite is 1.77.