Gahnospinel and Ettringite Physical Properties
Tenacity
Not Available
Not Available
Solubility
Not Available
Partially soluble in water
Durability
Not Available
Not Available
Specific Gravity
3.65-4.55
1.77
Fracture
ConchoidalArthur Thomas, Gemstones (2009)
Not Available
Cleavage
None, but may exhibit slight parting
Perfect on {10 1 0}
Mohs Hardness
7.5-8
2-2.5
Chemical Composition
(Mg,Zn)Al 2O 4Gemdat.org , Management Team (2012)
Ca 6Al 2(SO 4) 3(OH) 12 26H 2OMichael OâDonoghue , Gems, Sixth Edition (2006)
Gahnospinel and Ettringite Chemical Formula
While comparing Gahnospinel and Ettringite 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 Ettringite chemical formula.
- Chemical formula of Gahnospinel- (Mg,Zn)Al 2O 4Gemdat.org , Management Team (2012)
- Chemical formula of Ettringite- Ca 6Al 2(SO 4) 3(OH) 12 26H 2OMichael OâDonoghue , Gems, Sixth Edition (2006)
Gahnospinel and Ettringite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Gahnospinel and Ettringite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Gahnospinel and Ettringite Optical Properties during the identification of gemstone. Specific gravity of Gahnospinel is 1.77 whereas that of Ettringite is 1.77.