Chlorastrolite and Gahnite Physical Properties
Tenacity
Not Available
Not Available
Solubility
Not Available
Not Available
Durability
Not Available
Not Available
Specific Gravity
3.1-3.5
4.00-4.62
Fracture
Granular
Conchoidal, Uneven
Cleavage
Not Available
Indistinct parting on [111]
Chemical Composition
Ca 2(Mg,Fe)Al 2(SiO 4)(Si 2O 7)(OH) 2 · H 2O)Arthur Thomas , Gemstones (2009)
ZnAl 2O 4Michael OâDonoghue , Gems, Sixth Edition (2006)
Chlorastrolite and Gahnite Chemical Formula
While comparing Chlorastrolite 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 Chlorastrolite and Gahnite chemical formula.
- Chemical formula of Chlorastrolite- Ca 2(Mg,Fe)Al 2(SiO 4)(Si 2O 7)(OH) 2 · H 2O)Arthur Thomas , Gemstones (2009)
- Chemical formula of Gahnite- ZnAl 2O 4Michael OâDonoghue , Gems, Sixth Edition (2006)
Chlorastrolite and Gahnite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Chlorastrolite and Gahnite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Chlorastrolite and Gahnite Optical Properties during the identification of gemstone. Specific gravity of Chlorastrolite is 4.00-4.62 whereas that of Gahnite is 4.00-4.62.