Gahnospinel and Staurolite Physical Properties
Tenacity
Not Available
Brittle
Solubility
Not Available
Not Available
Durability
Not Available
Not Available
Specific Gravity
3.65-4.55
3.7-3.8
Fracture
ConchoidalArthur Thomas, Gemstones (2009)
Subconchoidal, ConchoidalArthur Thomas, Gemstones (2009), Conchoidal, Brittle
Cleavage
None, but may exhibit slight parting
Distinct on {010}
Mohs Hardness
7.5-8
7-7.5
Chemical Composition
(Mg,Zn)Al 2O 4Gemdat.org , Management Team (2012)
(Fe,Mg,Zn) 2Al 9(Si,Al) 4O 22(OH) 2Ulrich Henn and Claudio C.
Gahnospinel and Staurolite Chemical Formula
While comparing Gahnospinel 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 Gahnospinel and Staurolite chemical formula.
- Chemical formula of Gahnospinel- (Mg,Zn)Al 2O 4Gemdat.org , Management Team (2012)
- Chemical formula of Staurolite- (Fe,Mg,Zn) 2Al 9(Si,Al) 4O 22(OH) 2Ulrich Henn and Claudio C.
Gahnospinel and Staurolite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Gahnospinel and Staurolite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Gahnospinel and Staurolite Optical Properties during the identification of gemstone. Specific gravity of Gahnospinel is 3.7-3.8 whereas that of Staurolite is 3.7-3.8.