PYROMORPHITE
Pyromorphite, Cordoba, Spain
Pb5(PO4)3Cl , Lead Chlorophosphate Hardness: 3-3.5
Other characteristics.
Pyromorphite is a secondary mineral found in the oxidized zone of lead deposits and named from the Greek "pyro" for fire and "morph" for form, referring to its property of taking on a crystalline form after it has been melted in laboratory studies.