Pyrite and Austinite Physical Properties
Solubility
insoluble in water
Easily soluble in cold dilute HCl
Specific Gravity
5.00-5.20
4.12
Fracture
Uneven, Conchoidal, ConchoidalWalter Schumann
Uneven
Cleavage
Indistinct on {001}; partings on {011} and {111}
Good in two directions parallel to the prism faces {110}
Mohs Hardness
6-6.5
4-4.5
Chemical Composition
FeS 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
CaZn(AsO4)(OH)
Pyrite and Austinite Chemical Formula
While comparing Pyrite and Austinite 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 Pyrite and Austinite chemical formula.
- Chemical formula of Pyrite- FeS 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
- Chemical formula of Austinite- CaZn(AsO4)(OH)
Pyrite and Austinite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Pyrite and Austinite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Pyrite and Austinite Optical Properties during the identification of gemstone. Specific gravity of Pyrite is 4.12 whereas that of Austinite is 4.12.