Hamburg Mine, Silver District, La Paz Co., Arizona, U.S.A.
Judkins Quarry, Nuneaton, Warwickshire, England
Western Union Mine, Cerbat, Arizona, U.S.A.
Whitwell Quarry, Whitwell, Derbyshire, England
Glove Mine, Globe, Arizona, USA
Belton Grain Vein, Wanlockhead, Dumfriesshire, Scotland
