Caledonite from Mammoth-Saint Anthony Mine, Arizona, USA
Caledonite, 6.5 cm, from the 400-foot level of the Collins vein, Mammoth–St. Anthony mine, Tiger, Pinal County, Arizona. Ex collection of E. Mitchell Gunnell (1903–1986); Jeff Scovil photo.
A collector's guide to Mammoth-Saint Anthony Mine, USA: its geology, mining history and notable minerals, illustrated with the 255 specimens documented from this locality on EarthWonders.
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