Austinite and Aragonite Physical Properties
Solubility
Easily soluble in cold dilute HCl
Dilute acid
Durability
Not Available
Not Available
Specific Gravity
4.12
2.93-2.96
Fracture
Brittle, Uneven, Brittle, Uneven
Subconchoidal, ConchoidalArthur Thomas, Gemstones (2009), Conchoidal, Brittle
Cleavage
Good in two directions parallel to the prism faces {110}
Distinct on {010}, imperfect {110} and {011}
Mohs Hardness
4-4.5
3.5-4
Chemical Composition
CaZn(AsO4)(OH)
CaCO 3Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Austinite and Aragonite Chemical Formula
While comparing Austinite 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 Austinite and Aragonite chemical formula.
- Chemical formula of Austinite- CaZn(AsO4)(OH)
- Chemical formula of Aragonite- CaCO 3Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Austinite and Aragonite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Austinite and Aragonite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Austinite and Aragonite Optical Properties during the identification of gemstone. Specific gravity of Austinite is 2.93-2.96 whereas that of Aragonite is 2.93-2.96.