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