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Mineral Resources of the Notch Peak Wilderness Study Area, Millard County, Utah

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Mineral Resources of the Notch Peak Wilderness Study Area, Millard County, Utah Mineral Resources of the Notch Peak Wilderness Study Area, Millard County, Utah U.S. GEOLOGICAL SURVEY BULLETIN 1749-C Chapter C Mineral Resources of the Notch Peak Wilderness Study Area, Millard County, Utah By DOUGLAS B. STOESER, DAVID L CAMPBELL, VICTOR LABSON, DAVID R. ZIMBELMAN, MELVIN H. PODWYSOCKI, DAVID W. BRICKEY, JOSEPH S. DUVAL, and KENNETH L COOK U.S. Geological Survey WILLIAM LUNDBY U.S. Bureau of Mines U.S. GEOLOGICAL SURVEY BULLETIN 1749 MINERAL RESOURCES OF WILDERNESS STUDY AREAS WEST-CENTRAL UTAH DEPARTMENT OF THE INTERIOR MANUEL LUJAN, JR., Secretary U.S. GEOLOGICAL SURVEY Dallas L Peck, Director Any use of trade, product, or firm names in this publication is for descriptive purposes only and does not imply endorsement by the U.S. Government. UNITED STATES GOVERNMENT PRINTING OFFICE: 1990 For sale by the Books and Open-File Reports Section U.S. Geological Survey Federal Center Box 25425 Denver, CO 80225 Library of Congress Cataloging-in-Publication Data Mineral resources of the Notch Peak Wilderness Study Area, Millard County, Utah / by Douglas B. Stoeser... [et al.]. p. cm. (U.S. Geological Survey bulletin ; 1749-C) (Mineral resources of wilderness study areas west-central Utah) Includes bibliographical references. Supt. of Docs, no.: I 19.3:1749-C 1. Mines and mineral resources Utah Notch Peak Wilderness. 2. Notch Peak Wilderness (Utah) I. Stoeser, D.B. II. Series. III. Series: Mineral resources of wilderness study areas west-central Utah. QE75.B9 no. 1749-C [TN24.U8 ] 557 3 s_ dc20 [553'.09792'45] 89-600357 CIP STUDIES RELATED TO WILDERNESS Bureau of Land Management Wilderness Study Areas The Federal Land Policy and Management Act (Public Law 94-579, October 21, 1976) requires the U.S. Geological Survey and the U.S. Bureau of Mines to conduct mineral surveys on certain areas to determine the mineral values, if any, that may be present. Results must be made available to the public and be submitted to the President and the Congress. This report presents the results of a mineral survey of a part of the Notch Peak (UT-050-078) Wilderness Study Area, Millard County, Utah. CONTENTS Abstract Cl Summary Cl Character and setting Cl Identified resources C3 Mineral resource potential C3 Introduction C5 Investigations by the U.S. Bureau of Mines C5 Investigations by the U. S. Geological Survey C7 Appraisal of identified resouces C7 Mining and mineral exploration history C7 Identified resources C7 Notch Peak intrusive C9 Brown Queen mine area C9 Sawtooth Canyon area CIO Industrial rocks CIO Conclusions CIO Assessment of potential for undiscovered resources C12 Geology C12 Geologic setting C12 Sedimentary rocks C12 Notch Peak intrusive C13 Metamorphic aureole and mineralization C13 Geochemistry C14 Introduction C14 Summary of results CIS Geophysics C20 Gravity C20 Seismic C20 Aeromagnetics C20 Magnetotellurics C23 Radiometrics C23 Remote sensing C24 Mineral and energy resource potential C24 Tungsten and molybdenum C24 Gold and silver C24 Copper, lead, and zinc C25 Uranium and thorium C25 Other metals C25 Oil and gas C26 Coal C26 Geothermal energy C26 References cited C26 Appendix C29 Contents PLATE [Plate is in pocket] 1. Map showing mineral resource potential and geology of the Notch Peak Wilderness Study Area, Millard County, Utah. FIGURES 1-4. Maps showing: 1. Location of the Notch Peak Wilderness Study Area C2 2. Mineral resource potential of the Notch Peak Wilderness Study Area C4 3. Location of the Notch Peak mining district, mines, and prospects in and near the Notch Peak Wilderness Study Area C6 4. Oil and gas leases and lease applications in and near the Notch Peak Wilderness Study Area C8 5. Simplified geologic map of the Notch Peak Wilderness Study Area and vicinity Cll 6. Map showing location of stream-sediment sample sites, drainage basins, and anomalous elements in heavy-mineral-concentrate samples in and near the Notch Peak Wilderness Study Area CIS 7. Map showing location of sample sites and anomalous elements for rock samples in and near the Notch Peak Wilderness Study Area C19 8. Complete Bouguer gravity anomaly map of the Notch Peak Wilderness Study Area and vicinity C21 9. Aeromagnetic map of the Notch Peak Wilderness Study Area and vicinity C22 TABLES 1. Summary of geochemical anomalies for selected elements in heavy-mineral concentrates of stream-sediment samples, Notch Peak Wilderness Study Area, Utah CIS 2. Summary of geochemical anomalies for selected elements in rock samples, Notch Peak Wilderness Study Area, Utah C16 VI Contents MINERAL RESOURCES OF WILDERNESS STUDY-WEST-CENTRAL UTAH Mineral Resources of the Notch Peak Wilderness Study Area, Millard County, Utah By Douglas B. Stoeser, David L. Campbell, Victor Labson, David R. Zimbelman, Melvin H. Podwysocki, David W. Brickey, Joseph S. Duval, and Kenneth L Cook1 U.S. Geological Survey William Lundby U.S. Bureau of Mines ABSTRACT mineral resource potential for undiscovered molybdenum, gold, silver, copper, lead, zinc, uranium, and thorium. The The Notch Peak Wilderness Study Area (UT-050-078) area to the north of the contact zone of the granite has is located in the central House Range, Millard County, moderate mineral resource potential for undiscovered west-central Utah, about 43 miles west of the city of Delta. tungsten, molybdenum, gold, silver, copper, lead, and zinc, The geology of the study area consists of a Jurassic granite and low mineral resource potential for undiscovered uranium that intrudes gently dipping Cambrian and Ordovician and thorium. The area to the south of the contact zone of the limestone and shale. The northern part of the study area granite has low mineral resource potential for undiscovered includes part of the Notch Peak mining district, which has tungsten, molybdenum, gold, silver, copper, lead, zinc, produced tungsten from mines within and near the study uranium, and thorium. The area underlying a small drainage area. Mining within the district, but outside the study area, in the southwestern part of the study area has moderate included gold placer mining. Mineralization in the district is mineral resource potential for undiscovered tungsten and primarily related to the Notch Peak intrusive. A resource of molybdenum, and low mineral resource potential for undis­ 775 short tons, which averages 0.47 percent tungsten triox- covered gold, silver, copper, lead, zinc, uranium, and tho­ ide was defined at the Brown Queen mine in the northern part rium. The entire study area has moderate resource potential of the study area. Limestone and sand and gravel occur for undiscovered oil and gas. The entire study area has low within the study area. For the purposes of assessing mineral resource potential for all other metals, coal, and geothermal resource potential the study area was divided into five energy. subareas: the granite (Notch Peak intrusive), the meta- morphic contact zone of the granite, the area north of the contact zone, the area south of the contact zone, and a small SUMMARY drainage in the southwestern part of the study area. The Notch Peak intrusive has moderate mineral resource potential for undiscovered molybdenum, gold, copper, Character and Setting uranium, and thorium, and low mineral resource potential for At the request of the Bureau of Land Manage­ undiscovered tungsten, silver, lead, and zinc. The meta- ment, 28,000 acres of the Notch Peak Wilderness Study morphic contact zone of the granite has high mineral resource potential for undiscovered tungsten, and moderate Area were studied. In this report the studied area is called the "wilderness study area" or simply the "study area." The study area lies in the central part of the House Manuscript approved for publication, October 16, 1989. Range, which is a classic range of the Basin and Range University of Utah. physiographic province in Utah (fig. 1). The central Notch Peak Wilderness Study Area C1 114° 113° 40' APPROXIMATE BOUNDARY OF THE NOTCH PEAK WILDERNESS STUDY AREA Figure 1. Location of the Notch Peak Wilderness Study Area. House Range has a steep, rugged west face but slopes 5,000 ft (fig. 1, pi. 1). Bedrock is well exposed. Although gently to the east. Maximum relief from the floor of Tule the region is part of the Sevier Desert, much of the area Valley on the west to Notch Peak (9,655 ft), the highest above 7,000 ft is wooded with juniper, pinon pine, and peak in the central part of the range, is slightly more than local aspen. C2 Mineral Resources of Wilderness Study West-Central Utah The House Range is an eastward-tilted upthrown mineral resource potential for undiscovered tungsten, block with a range-front fault on the west side. The and the rest of the study area has low mineral resource geology of the study area is simple and consists of a potential for undiscovered tungsten. Jurassic granite (the Notch Peak intrusive) that intrudes Within the study area, minor molybdenum, copper, gently south dipping Cambrian and Ordovican lime­ uranium, and thorium occurrences are associated with stones and shales. Deep seismic reflection data show that the granite along its western margin. Based on these the central House Range is underlain by several occurrences as well as geochemical anomalies, the detachment surfaces (shallow-dipping major faults), mineral resource potential for undiscovered molyb­ which were formed by regional, easterly directed denum, copper, lead, zinc, uranium, and thorium is thrusting during the late Mesozoic. moderate within the contact zone. In the area north of the contact zone, the mineral resource potential is moderate for undiscovered molybdenum, copper, lead, Identified Resources and zinc, and is low for undiscovered uranium and thorium. Within the granite there is moderate mineral Tungsten, gold, molybdenum, copper, and uran­ resource potential for undiscovered molybdenum, ium mineralization is associated with the Notch Peak copper, uranium, and thorium, and low mineral resource intrusive.
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