Pyromorphite and Powellite Physical Properties
Tenacity
Brittle
Not Available
Solubility
Not Available
Not Available
Durability
Not Available
Not Available
Specific Gravity
6.5-7.1
4.23
Fracture
Uneven, ConchoidalArthur Thomas, Brittle, Metallic
UnevenAnthony et al, Handbook of mineralogy (2001), UnevenAnthony et al, Handbook of mineralogy (2001), Brittle, Conchoidal
Cleavage
Imperfect- [10 1 1]
{111} Distinct
Mohs Hardness
3.5-4
3.5-4
Chemical Composition
Pb 5(PO 4) 3ClArthur Thomas , Gemstones (2009)
CaMoO 4Michael OâDonoghue , Gems, Sixth Edition (2006)
Pyromorphite and Powellite Chemical Formula
While comparing Pyromorphite and Powellite 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 Powellite chemical formula.
- Chemical formula of Pyromorphite- Pb 5(PO 4) 3ClArthur Thomas , Gemstones (2009)
- Chemical formula of Powellite- CaMoO 4Michael OâDonoghue , Gems, Sixth Edition (2006)
Pyromorphite and Powellite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Pyromorphite and Powellite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Pyromorphite and Powellite Optical Properties during the identification of gemstone. Specific gravity of Pyromorphite is 4.23 whereas that of Powellite is 4.23.