Staurolite and Calcite Physical Properties
Solubility
Not Available
Soluble
Durability
Not Available
Not Available
Specific Gravity
3.7-3.8
2.67-2.73
Fracture
Subconchoidal, ConchoidalArthur Thomas, Gemstones (2009), Conchoidal, Brittle
Conchoidal, ConchoidalArthur Thomas, Gemstones (2009), ConchoidalArthur Thomas, Gemstones (2009), Brittle, Conchoidal
Cleavage
Distinct on {010}
Perfect on [10 1 1] three directions with angle of 74° 55
Chemical Composition
(Fe,Mg,Zn) 2Al 9(Si,Al) 4O 22(OH) 2Ulrich Henn and Claudio C.
CaCO 3Ulrich Henn and Claudio C.
Staurolite and Calcite Chemical Formula
While comparing Staurolite and Calcite 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 Calcite chemical formula.
- Chemical formula of Staurolite- (Fe,Mg,Zn) 2Al 9(Si,Al) 4O 22(OH) 2Ulrich Henn and Claudio C.
- Chemical formula of Calcite- CaCO 3Ulrich Henn and Claudio C.
Staurolite and Calcite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Staurolite and Calcite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Staurolite and Calcite Optical Properties during the identification of gemstone. Specific gravity of Staurolite is 2.67-2.73 whereas that of Calcite is 2.67-2.73.