Gahnite and Erythrite Physical Properties
Tenacity
Not Available
Sectile
Solubility
Not Available
Not Available
Durability
Not Available
Not Available
Specific Gravity
4.00-4.62
3.06
Fracture
Conchoidal, Uneven
Sectile Curved shavings or scrapings produced by a knife blade, (e.g. graphite).
Cleavage
Indistinct parting on [111]
Perfect on {010}; poor on {100} and { 1 02}.
Mohs Hardness
7.5-8
Not Available
Chemical Composition
ZnAl 2O 4Michael OâDonoghue , Gems, Sixth Edition (2006)
Co3(AsO4)2•8(H2O)
Gahnite and Erythrite Chemical Formula
While comparing Gahnite and Erythrite 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 Gahnite and Erythrite chemical formula.
- Chemical formula of Gahnite- ZnAl 2O 4Michael OâDonoghue , Gems, Sixth Edition (2006)
- Chemical formula of Erythrite- Co3(AsO4)2•8(H2O)
Gahnite and Erythrite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Gahnite and Erythrite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Gahnite and Erythrite Optical Properties during the identification of gemstone. Specific gravity of Gahnite is 3.06 whereas that of Erythrite is 3.06.