Campylite

Campylite
Mimetite (Var.: Campylite)
General
Category	Mineral
Formula (repeating unit)	Pb5(AsO4)3Cl

Campylite is a variety of the lead arsenate mineral mimetite which received the name from the Greek 'kampylos'- bent, on account of the barrel-shaped bend of its crystals. It has also been used as an alternate name for pyromorphite.

It occurs in the upper lead deposits through the oxidation of galena or cerussite. The main deposits are Příbram in Bohemia and Dry Gill, Caldbeck Fells, near Wigton, Cumbria, England.

References

• Mindat with location data
• Webmineral pyromorphite page

Further reading

• Mick Cooper and Chris Stanley, 1990, Minerals of the English Lake District, Natural History Museum Publications, London, ISBN 0-11-310022-1