Gypsum and Gahnite Physical Properties
Tenacity
Flexible
Not Available
Solubility
Soluble
Not Available
Durability
Not Available
Not Available
Specific Gravity
2.20-2.40
4.00-4.62
Fracture
Conchoidal, Splintery, Fibrous, UnevenArthur Thomas, Gemstones (2009)
Conchoidal, Uneven
Cleavage
Perfect on {010}, distinct on {100}
Indistinct parting on [111]
Chemical Composition
CaSO 4 -2(H 2O)Arthur Thomas , Gemstones (2009)
ZnAl 2O 4Michael OâDonoghue , Gems, Sixth Edition (2006)
Gypsum and Gahnite Chemical Formula
While comparing Gypsum and Gahnite 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 Gypsum and Gahnite chemical formula.
- Chemical formula of Gypsum- CaSO 4 -2(H 2O)Arthur Thomas , Gemstones (2009)
- Chemical formula of Gahnite- ZnAl 2O 4Michael OâDonoghue , Gems, Sixth Edition (2006)
Gypsum and Gahnite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Gypsum and Gahnite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Gypsum and Gahnite Optical Properties during the identification of gemstone. Specific gravity of Gypsum is 4.00-4.62 whereas that of Gahnite is 4.00-4.62.