Bl Summary Bl Introduction B3 Investigations by the U.S Bureau of Mines B3 Investigations by the U.S. Geological Survey B4 Appraisal of identified resources B5 Mining and mineral exploration history B5 Mining claims and leases B5 Reserves and identified resources B5 Recommendations for further study B5 Assessment of potential for undiscovered resources B5 Geologic setting B5 Geochemistry B6 Analytical methods B7 Results of study B7 Florence Canyon-Starr Canyon-Cherry Creek anomaly B7 Grover Canyon anomaly B7 War Canyon anomaly B7 Sedimentary rock-hosted antimony anomaly (northeastern part of study area) B7 Precious-metal anomaly (northeastern part of study area) B8 Other anomalies B8 Geophysical studies B9 Airborne gamma-ray spectrometric data B9 Gravity data B9 Aeromagnetic data B9 Mineral and energy resource potential B12 Mineral-deposit models B12 Characteristics of known deposits B12 Potential for undiscovered metal resources B13 Potential for undiscovered zeolite resources B14 Potential for undiscovered petroleum resources B14 Potential for undiscovered geothermal resources B15 References cited B15 Appendix B17 PLATE