Austinite and Andalusite Physical Properties
Tenacity
Brittle
Not Available
Solubility
Easily soluble in cold dilute HCl
Not Available
Durability
Not Available
Not Available
Specific Gravity
4.12
3.05-3.21
Fracture
Brittle, Uneven, Brittle, Uneven
Uneven, Subconchoidal, Uneven, Subconchoidal, Splintery, UnevenArthur Thomas, Gemstones (2009)
Cleavage
Good in two directions parallel to the prism faces {110}
Good on {110}, poor on {100}
Chemical Composition
CaZn(AsO4)(OH)
Al 2SiO 5Michael OâDonoghue , Gems, Sixth edition (2006) More from other references
Austinite and Andalusite Chemical Formula
While comparing Austinite and Andalusite 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 Andalusite chemical formula.
- Chemical formula of Austinite- CaZn(AsO4)(OH)
- Chemical formula of Andalusite- Al 2SiO 5Michael OâDonoghue , Gems, Sixth edition (2006) More from other references
Austinite and Andalusite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Austinite and Andalusite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Austinite and Andalusite Optical Properties during the identification of gemstone. Specific gravity of Austinite is 3.05-3.21 whereas that of Andalusite is 3.05-3.21.