Austinite and Pyrophyllite Physical Properties
Tenacity
Brittle
Not Available
Solubility
Easily soluble in cold dilute HCl
Not Available
Durability
Not Available
Not Available
Specific Gravity
4.12
2.65-2.90
Fracture
Brittle, Uneven, Brittle, Uneven
Gemstones (2009), Flexible Flexible fragments.
Cleavage
Good in two directions parallel to the prism faces {110}
{001} Perfect
Mohs Hardness
4-4.5
Not Available
Chemical Composition
CaZn(AsO4)(OH)
Al 2Si 4O 10(OH) 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Austinite and Pyrophyllite Chemical Formula
While comparing Austinite and Pyrophyllite 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 Pyrophyllite chemical formula.
- Chemical formula of Austinite- CaZn(AsO4)(OH)
- Chemical formula of Pyrophyllite- Al 2Si 4O 10(OH) 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Austinite and Pyrophyllite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Austinite and Pyrophyllite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Austinite and Pyrophyllite Optical Properties during the identification of gemstone. Specific gravity of Austinite is 2.65-2.90 whereas that of Pyrophyllite is 2.65-2.90.