Austinite and Fayalite Physical Properties
Tenacity
Brittle
Not Available
Solubility
Easily soluble in cold dilute HCl
Not Available
Durability
Not Available
Not Available
Specific Gravity
4.12
4.392
Fracture
Brittle, Uneven, Brittle, Uneven
Conchoidal, ConchoidalAnthony et al, Handbook of mineralogy (2001), Conchoidal, Brittle
Cleavage
Good in two directions parallel to the prism faces {110}
{010} moderate, {100} imperfect
Mohs Hardness
4-4.5
6.5-7
Chemical Composition
CaZn(AsO4)(OH)
Fe 2SiO 4Michael OâDonoghue , Gems, Sixth Edition (2006)
Austinite and Fayalite Chemical Formula
While comparing Austinite and Fayalite 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 Fayalite chemical formula.
- Chemical formula of Austinite- CaZn(AsO4)(OH)
- Chemical formula of Fayalite- Fe 2SiO 4Michael OâDonoghue , Gems, Sixth Edition (2006)
Austinite and Fayalite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Austinite and Fayalite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Austinite and Fayalite Optical Properties during the identification of gemstone. Specific gravity of Austinite is 4.392 whereas that of Fayalite is 4.392.