‡Ref.: Schrader, F.C. & J.M. Hill (1915), Mineral deposits of the Santa Rita and Patagonia Mountains, Arizona, USGS Bull. 582: 203.
The Excelsior vein is on the south side of the Alto property. It is known and well-defined for nearly 1,000 feet and is about 3 feet wide.
Workings include several shafts, short tunnels, and drifts.It is not of relatively great importance but is reported to carry Cu-Au-Ag & Pb (a little).
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