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The San Gorgonio Wilderness, located approximately 75 mi east of Los Angeles, California, was investigated using field and laboratory studies. Several abandoned prospect pits, within and immediately adjacent to the wilderness, mark minor occurences of metallic minerals, uranium, and marble, but little mineral production has come from the area. The studies suggest that any undiscovered mineral deposits that may be present in the wilderness probably are small and scattered.
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SAN GORGONIO WILDERNESS, CALIFORNIA.
Geological Survey Professional Paper (United States)