Spinel and Caledonite Physical Properties
Tenacity
Not Available
Brittle
Solubility
none
Not Available
Durability
Not Available
Not Available
Specific Gravity
3.64-3.66
5.6-5.76
Fracture
Conchoidal, Uneven, ConchoidalArthur Thomas, Gemstones (2009)
Uneven, UnevenAnthony et al, Handbook of mineralogy (2001)
Cleavage
None, but may exhibit slight parting
[001] perfect; [100] distinct
Chemical Composition
MgAl2O4
Pb 5Cu 2(SO 4) 3(CO 3)(OH) 6Anthony et al , Handbook of mineralogy (2001)
Spinel and Caledonite Chemical Formula
While comparing Spinel and Caledonite 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 Spinel and Caledonite chemical formula.
- Chemical formula of Spinel- MgAl2O4
- Chemical formula of Caledonite- Pb 5Cu 2(SO 4) 3(CO 3)(OH) 6Anthony et al , Handbook of mineralogy (2001)
Spinel and Caledonite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Spinel and Caledonite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Spinel and Caledonite Optical Properties during the identification of gemstone. Specific gravity of Spinel is 5.6-5.76 whereas that of Caledonite is 5.6-5.76.