PYROMORPHITE
Pyromorphite is a lead chlorophosphate mineral (Pb5(PO4)3Cl).
Where well-developed, it forms hexagonal crystals, and can occur in several
different colors. Pyromorphite is a secondary mineral found in the
supergene zone of lead-rich areas.
Pyromorphite - nice plate of yellowish-brown pyromorphite crystals (CM public
display, Carnegie Museum of Natural History, Pittsburgh, Pennsylvania, USA).
Pyromorphite - greenish pyromorphite plate from Phoenixville, Pennsylvania, USA (CM
public display, Carnegie Museum of Natural History, Pittsburgh, Pennsylvania,
USA).