Caledonite and Austinite Physical Properties
Solubility
Not Available
Easily soluble in cold dilute HCl
Durability
Not Available
Not Available
Specific Gravity
5.6-5.76
4.12
Fracture
Uneven, UnevenAnthony et al, Handbook of mineralogy (2001)
Brittle, Uneven, Brittle, Uneven
Cleavage
[001] perfect; [100] distinct
Good in two directions parallel to the prism faces {110}
Mohs Hardness
2.5-3
4-4.5
Chemical Composition
Pb 5Cu 2(SO 4) 3(CO 3)(OH) 6Anthony et al , Handbook of mineralogy (2001)
CaZn(AsO4)(OH)
Caledonite and Austinite Chemical Formula
While comparing Caledonite and Austinite 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 Caledonite and Austinite chemical formula.
- Chemical formula of Caledonite- Pb 5Cu 2(SO 4) 3(CO 3)(OH) 6Anthony et al , Handbook of mineralogy (2001)
- Chemical formula of Austinite- CaZn(AsO4)(OH)
Caledonite and Austinite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Caledonite and Austinite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Caledonite and Austinite Optical Properties during the identification of gemstone. Specific gravity of Caledonite is 4.12 whereas that of Austinite is 4.12.