Staurolite and Anorthite Physical Properties
Solubility
Not Available
Not Available
Durability
Not Available
Not Available
Specific Gravity
3.7-3.8
2.77
Fracture
Subconchoidal, ConchoidalArthur Thomas, Gemstones (2009), Conchoidal, Brittle
Uneven, Uneven, Gems, Sixth Edition (2006)
Cleavage
Distinct on {010}
Perfect [001] good [010] poor [110]
Mohs Hardness
7-7.5
6-6.5
Chemical Composition
(Fe,Mg,Zn) 2Al 9(Si,Al) 4O 22(OH) 2Ulrich Henn and Claudio C.
CaAl 2Si 2O 8Michael OâDonoghue , Gems, Sixth Edition (2006)
Staurolite and Anorthite Chemical Formula
While comparing Staurolite and Anorthite 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 Staurolite and Anorthite chemical formula.
- Chemical formula of Staurolite- (Fe,Mg,Zn) 2Al 9(Si,Al) 4O 22(OH) 2Ulrich Henn and Claudio C.
- Chemical formula of Anorthite- CaAl 2Si 2O 8Michael OâDonoghue , Gems, Sixth Edition (2006)
Staurolite and Anorthite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Staurolite and Anorthite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Staurolite and Anorthite Optical Properties during the identification of gemstone. Specific gravity of Staurolite is 2.77 whereas that of Anorthite is 2.77.