Mineral resources potential of the John Muir Wilderness, Fresno, Inyo, Madera, and Mono counties, California summary report ... [caption title]. N.p. [Reston, VA]: Department of the Interior, United States Geological Survey, n.d. . 28 cm, pp. 1-10, 2 figures, self wrappers, side stapled. The mineral resource survey by the U.S. Bureau of Mines and the U.S. Geological Survey identified many areas of the 483,155-acre John Muir Wilderness in the southern Sierra Nevada as having marginal and sub-economic resources of tungsten, molybdenum, copper, gold, silver, and other metallic commodities. Geologic, geochemical, and geophysical evidence suggested that undiscovered mineral resources may also exist in the area. The summary report accompanies Map MF-1185-C, Mineral resources potential map of the John Muir Wilderness, Fresno, Inyo, Madera, and Mono counties, California, 1982, 98x129 cm, folded to 24.5x21.5 cm., large map: scale 1: 250,000 with text "Miscellaneous field studies Map MF-1185-C." The map is based on du Bray's 1981 "Generalized Bedrock Geologic Map of the John Muir Wilderness ..." (Map MF-1185-A) and Diggles, Dellinger and du Bray's 1982 "Maps and Interpretation of Geochemical Anomalies in the John Muir Wilderness ..." (Map MF-1185-B). A fine copy. (#138988).
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