‡Ref.: Schrader, F.C. & J.M. Hill (1915), Mineral deposits of the Santa Rita and Patagonia Mountains, Arizona, USGS Bull. 582: 206-207.
USGS Mt Wrightson 15 minute topo map.
A former underground Pb-Cu-Ag-Au-Sb-As-Cl-Br prospect/mine located just east of Bond's cabin.
Mineralization is a 5 foot wide lode that dips 80ºS. at surface, in latite breccia, and occupies a well-defined fissure 4 to 6 feet wide, filled mostly with gouge and crushed rock. Toward its middle; however, it contains 2 small veins or pay streaks from 2 to 6 inches (5 to 15 cm) wide, composed principally of a quartz-calcite-siderite gangue with a little rhodochrosite and rhodonite. The filling of the lode in general, not including the 2 quartz veins or pay streaks, is said to average $20 to the ton in Cu & Ag.
One of the pay streaks is composed chiefly of copper and lead-stained quartz showing galena and seemingly a little gray copper (tetrahedrite). Some of it is banded, but post-mineral movement has crushed it. The richest ore is said to occur on the 80 foot level, where the 2 pay streaks join or intersect. Some of it carries to 120 oz. Ag/T.
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Map Reference: 31°37'15"N , 110°52'23"W
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