Pyromorphite, chlorinated lead phosphate,
Formula Pb5(PO4)3Cl.

Crystal system: Hexagonal
Hardness: 3.5 to 4
Density: 7 gms/cm3
Colour: Yellow, green, or brown.
Streak: White

Pyromorphite is a secondary mineral found in the oxydation zones of lead deposits. Particularly beautiful golden-yellow crystals of Pyromorphite are found at Bunker Hill in Idaho, USA. Pyromorphite is a minor ore of lead.

The specimen shown is from Daoping Mine, Guangxi Province, China.

Pyromorphite from Daoping Mine, Guangxi Province, China