Mineralpedia Details for Lanarkite
Named after the type locality at the Susanna mine in the Leadhills in Lanarkshire, Scotland. An uncommon mineral that occurs in oxidized lead sulfide deposits. Localities include, additionally, England, Wales, Germany, Austria, France, Greece, Iran, South Africa, Australia, the USA, and Chile, among some others. Lanarkite fluoresces yellow under X-rays and long-wave ultraviolet light.
Ref. Handbook of Mineralogy, Anthony et al (1995) and MSA at http://www.handbookofmineralogy.org/pdfs/lanarkite.pdf
Lanarkite from Leadhills, Lanarkshire, Scotland
Straw-like or splinter-like greyish white crystals to 1cm tucked away in a 2cm vug.