Thulite and Staurolite Physical Properties
Tenacity
Not Available
Brittle
Solubility
Not Available
Not Available
Durability
Not Available
Not Available
Specific Gravity
3.1
3.7-3.8
Fracture
Uneven, Conchoidal, ConchoidalArthur Thomas, Gemstones (2009)
Subconchoidal, ConchoidalArthur Thomas, Gemstones (2009), Conchoidal, Brittle
Cleavage
Perfect {010} imperfect {100}
Distinct on {010}
Chemical Composition
Ca2Al3(SiO4)3(OH)
(Fe,Mg,Zn) 2Al 9(Si,Al) 4O 22(OH) 2Ulrich Henn and Claudio C.
Thulite and Staurolite Chemical Formula
While comparing Thulite and Staurolite 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 Thulite and Staurolite chemical formula.
- Chemical formula of Thulite- Ca2Al3(SiO4)3(OH)
- Chemical formula of Staurolite- (Fe,Mg,Zn) 2Al 9(Si,Al) 4O 22(OH) 2Ulrich Henn and Claudio C.
Thulite and Staurolite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Thulite and Staurolite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Thulite and Staurolite Optical Properties during the identification of gemstone. Specific gravity of Thulite is 3.7-3.8 whereas that of Staurolite is 3.7-3.8.