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Mineral-resource surveys of the North Fork of the American River Wilderness study area, California have identified a zone of substantiated resource potential for gold and silver. Zones of probable gold and silver potential occur in the eastern part of the area between the Wubbena and La Trinidad mines and locally around the Marrs mine. A zone with probable chromium potential occurs in the serpentinite belt along the western border of the area. No energy resources were identified in this study.
Additional Publication Details
NORTH FORK OF THE AMERICAN RIVER WILDERNESS STUDY AREA, CALIFORNIA.
Geological Survey Professional Paper (United States)