Austinite and Brookite Physical Properties
Solubility
Easily soluble in cold dilute HCl
Not Available
Durability
Not Available
Not Available
Specific Gravity
4.12
3.87-4.14
Fracture
Brittle, Uneven, Brittle, Uneven
Subconchoidal, ConchoidalArthur Thomas, Gemstones (2009), Conchoidal, Brittle
Cleavage
Good in two directions parallel to the prism faces {110}
Poor on {120}, in traces on {001}
Mohs Hardness
4-4.5
5.5-6
Chemical Composition
CaZn(AsO4)(OH)
TiO 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Austinite and Brookite Chemical Formula
While comparing Austinite and Brookite 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 Brookite chemical formula.
- Chemical formula of Austinite- CaZn(AsO4)(OH)
- Chemical formula of Brookite- TiO 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Austinite and Brookite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Austinite and Brookite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Austinite and Brookite Optical Properties during the identification of gemstone. Specific gravity of Austinite is 3.87-4.14 whereas that of Brookite is 3.87-4.14.