The silver mines of the Cerro Colorado Mining district in Santa Cruz County have attracted the attention of miners who worked the narrow quartz veins in sedimentary volcanic rocks for several hundred years.
By William Ascarza Special to the Arizona Daily Star, Tucson Daily Star
Sun, 11/06/2016 - 7:54pm
The silver mines of the Cerro Colorado Mining district in Santa Cruz County have attracted the attention of miners who worked the narrow quartz veins in sedimentary volcanic rocks for several hundred years.