Caledonite and Corundum Physical Properties
Solubility
Not Available
insoluble
Durability
Not Available
Not Available
Specific Gravity
5.6-5.76
3.90-4.05
Fracture
Uneven, UnevenAnthony et al, Handbook of mineralogy (2001)
Uneven, Uneven, Gems, Difficult, Fibrous
Cleavage
[001] perfect; [100] distinct
None – parting in 3 directions
Chemical Composition
Pb 5Cu 2(SO 4) 3(CO 3)(OH) 6Anthony et al , Handbook of mineralogy (2001)
Al 2O 3Arthur Thomas , Gemstones (2009)
Caledonite and Corundum Chemical Formula
While comparing Caledonite and Corundum 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 Corundum 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 Corundum- Al 2O 3Arthur Thomas , Gemstones (2009)
Caledonite and Corundum Specific Gravity
Another important criteria for qualitative analysis of gemstones is Caledonite and Corundum Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Caledonite and Corundum Optical Properties during the identification of gemstone. Specific gravity of Caledonite is 3.90-4.05 whereas that of Corundum is 3.90-4.05.