Sulphur Springs Valley, Cochise County, Arizona, USA
Sulphur Springs Valley, Cochise County, Arizona, USA : Ref.: Lausen (1927b), Piedmontite from Sulphur Springs Valley, Arizona, American Mineralogist: 12: 283-287. Galbraith, F.W. & D.J. Brennan (1959), Minerals of Arizona: 60. Peterson, D.L. ...
Source: mindat.org