Anorthite and Gahnite Physical Properties
Tenacity
Brittle
Not Available
Solubility
Not Available
Not Available
Durability
Not Available
Not Available
Specific Gravity
2.77
4.00-4.62
Fracture
Uneven, Uneven, Gems, Sixth Edition (2006)
Conchoidal, Uneven
Cleavage
Perfect [001] good [010] poor [110]
Indistinct parting on [111]
Mohs Hardness
6-6.5
7.5-8
Chemical Composition
CaAl 2Si 2O 8Michael OâDonoghue , Gems, Sixth Edition (2006)
ZnAl 2O 4Michael OâDonoghue , Gems, Sixth Edition (2006)
Anorthite and Gahnite Chemical Formula
While comparing Anorthite 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 Anorthite and Gahnite chemical formula.
- Chemical formula of Anorthite- CaAl 2Si 2O 8Michael OâDonoghue , Gems, Sixth Edition (2006)
- Chemical formula of Gahnite- ZnAl 2O 4Michael OâDonoghue , Gems, Sixth Edition (2006)
Anorthite and Gahnite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Anorthite and Gahnite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Anorthite and Gahnite Optical Properties during the identification of gemstone. Specific gravity of Anorthite is 4.00-4.62 whereas that of Gahnite is 4.00-4.62.