Pyromorphite and Caledonite Physical Properties
Solubility
Not Available
Not Available
Durability
Not Available
Not Available
Specific Gravity
6.5-7.1
5.6-5.76
Fracture
Uneven, ConchoidalArthur Thomas, Brittle, Metallic
Uneven, UnevenAnthony et al, Handbook of mineralogy (2001)
Cleavage
Imperfect- [10 1 1]
[001] perfect; [100] distinct
Mohs Hardness
3.5-4
2.5-3
Chemical Composition
Pb 5(PO 4) 3ClArthur Thomas , Gemstones (2009)
Pb 5Cu 2(SO 4) 3(CO 3)(OH) 6Anthony et al , Handbook of mineralogy (2001)
Pyromorphite and Caledonite Chemical Formula
While comparing Pyromorphite 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 Pyromorphite and Caledonite chemical formula.
- Chemical formula of Pyromorphite- Pb 5(PO 4) 3ClArthur Thomas , Gemstones (2009)
- Chemical formula of Caledonite- Pb 5Cu 2(SO 4) 3(CO 3)(OH) 6Anthony et al , Handbook of mineralogy (2001)
Pyromorphite and Caledonite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Pyromorphite and Caledonite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Pyromorphite and Caledonite Optical Properties during the identification of gemstone. Specific gravity of Pyromorphite is 5.6-5.76 whereas that of Caledonite is 5.6-5.76.