Austinite and Faustite Physical Properties
Tenacity
Brittle
Not Available
Solubility
Easily soluble in cold dilute HCl
Not Available
Durability
Not Available
Not Available
Specific Gravity
4.12
2.9
Fracture
Brittle, Uneven, Brittle, Uneven
Conchoidal, ConchoidalAnthony et al, Conchoidal, Brittle, Conchoidal
Cleavage
Good in two directions parallel to the prism faces {110}
{???} Indistinct
Chemical Composition
CaZn(AsO4)(OH)
(Zn,Cu)Al 6(PO 4) 4(OH) 8 · 4H 2OMichael OâDonoghue , Gems, Sixth Edition (2006)
Austinite and Faustite Chemical Formula
While comparing Austinite and Faustite 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 Faustite chemical formula.
- Chemical formula of Austinite- CaZn(AsO4)(OH)
- Chemical formula of Faustite- (Zn,Cu)Al 6(PO 4) 4(OH) 8 · 4H 2OMichael OâDonoghue , Gems, Sixth Edition (2006)
Austinite and Faustite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Austinite and Faustite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Austinite and Faustite Optical Properties during the identification of gemstone. Specific gravity of Austinite is 2.9 whereas that of Faustite is 2.9.