Gahnite and Aragonite Physical Properties
Tenacity
Not Available
Brittle
Solubility
Not Available
Dilute acid
Durability
Not Available
Not Available
Specific Gravity
4.00-4.62
2.93-2.96
Fracture
Conchoidal, Uneven
Subconchoidal, ConchoidalArthur Thomas, Gemstones (2009), Conchoidal, Brittle
Cleavage
Indistinct parting on [111]
Distinct on {010}, imperfect {110} and {011}
Mohs Hardness
7.5-8
3.5-4
Chemical Composition
ZnAl 2O 4Michael OâDonoghue , Gems, Sixth Edition (2006)
CaCO 3Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Gahnite and Aragonite Chemical Formula
While comparing Gahnite and Aragonite 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 Aragonite chemical formula.
- Chemical formula of Gahnite- ZnAl 2O 4Michael OâDonoghue , Gems, Sixth Edition (2006)
- Chemical formula of Aragonite- CaCO 3Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Gahnite and Aragonite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Gahnite and Aragonite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Gahnite and Aragonite Optical Properties during the identification of gemstone. Specific gravity of Gahnite is 2.93-2.96 whereas that of Aragonite is 2.93-2.96.