Pyromorphite and Neptunite Physical Properties
Solubility
Not Available
Not Available
Durability
Not Available
Not Available
Specific Gravity
6.5-7.1
3.19-3.23
Fracture
Uneven, ConchoidalArthur Thomas, Brittle, Metallic
Conchoidal, ConchoidalAnthony et al, Handbook of mineralogy (2001), Brittle
Cleavage
Imperfect- [10 1 1]
{110} good
Chemical Composition
Pb 5(PO 4) 3ClArthur Thomas , Gemstones (2009)
KNa 2Li(Fe2+ ,Mn2+ ) 2Ti 2Si 8O 24Michael OâDonoghue , Gems, Sixth Edition (2006)
Pyromorphite and Neptunite Chemical Formula
While comparing Pyromorphite and Neptunite 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 Neptunite chemical formula.
- Chemical formula of Pyromorphite- Pb 5(PO 4) 3ClArthur Thomas , Gemstones (2009)
- Chemical formula of Neptunite- KNa 2Li(Fe2+ ,Mn2+ ) 2Ti 2Si 8O 24Michael OâDonoghue , Gems, Sixth Edition (2006)
Pyromorphite and Neptunite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Pyromorphite and Neptunite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Pyromorphite and Neptunite Optical Properties during the identification of gemstone. Specific gravity of Pyromorphite is 3.19-3.23 whereas that of Neptunite is 3.19-3.23.