 | | Report (issue) | | THORIUM INVESTIGATIONS 1950-52, WET MOUNTAINS, COLORADO This report concerns work done on behalf of the...THORIUM INVESTIGATIONS 1950-52, WET MOUNTAINS, COLORADO By R. A. Christman, A. M. Heyman, L. F. Dellwig...Description of prospects.. ....... Haputa ranch area .......... Rock units.............. Structure ............. Thorium deposits........ Tuttle ranch area ........... Geology ................ Thorium deposits...... 29 Swartz property ............... 29 Unnamed prospect.............. 29 Literature Cited ....... |  | | Report (volume) | | Associated with Stratabound Sulfide Deposits, Custer County, Colorado GEOLOGICAL SURVEY BULLETIN 1513 ~apphirine...Associated with Stratabound Sulfide Deposits, Custer County, Colorado By WILLIAM H. RAYMOND, PETER A. LEIGGI...associated with stratabound sulfide deposits, Custer County, Colorado. (Geological Survey Bulletin 1 513) Bibliography:...of Docs. no.: I 19.3:1513 1. Sapphirine-Colorado-Custer County. 2. Geology, Stratigraphic-Precambrian.... 3. Sulphides. 4. Geology-Colorado-Custer County. I. Leiggi, Peter A., joint author. II. Sheridan, Douglas |  | | Report (issue) | | Management Property in the Challis Area: Challis Area Group, Custer County, Idaho Virginia S. Gillerman Forrest...Management Property in the Challis Area: Challis Area Group, Custer County, Idaho Virginia S. Gillerman Forrest...Figure 1: Location map of the Challis Area mine sites, Custer County, Idaho. . . . . . . . . 6 HAZARD ASSESSMENT...CARROTHERS/HINES PROSPECT (CH-1099) . . . . . . . . . . . 10 SITE ID-0458-00002: TURTLE MINE (CH-396) . .... . . . . . . . . . 10 SITE ID-0458-00003: UNNAMED PROSPECT ( FILE R 071615a) . . . . . . . . . . . . |  | | Journal (article/letter/editorial) | | METAMORPHOSED PROTEROZOIC BASE-METAL SULFIDE OCCURRENCES, COLORADO: A RE-EVALUATION OF GAHNITE COMPOSITION AS A GUIDE...metamorphosed to the amphibolite and granulite facies in Colorado, many of which are spatially associated with Mg-rich...Mountains (Marion and Amethyst prospects and an unnamed prospect) are depleted in Zn and enriched in Mg and...massive-sulfide deposits in Mg-rich alteration zones in Colorado, causes a marked enrichment in the spinel component...guide, massive sulfides, magnesium enrichment, Colorado. SOMMAIRE Le spinelle zincifère [(Zn,Fe,Mg)Al2O4] |  | | Report (issue) | | Published maps by the USGS that cover parts of the study area................... 2. Thesis work used in the compilation...production of the main copper producers in the study area...... 12. Principal deposit types and cumulative...expanded upon to provide a detailed assessment of the area should such a study be desired. This report makes...determine the extent of published studies within the area and as a preliminary indication of the types of...locations of those deposits, that may be present in the area but are as yet undiscovered. For ease of assembly |  | | Report (volume) | | the Jacumba (In-ko-pah) Wilderness Study Area, Imperial County, California U.S. GEOLOGICAL SURVEY BULLETIN...the Jacumba (In-ko-pah) Wilderness Study Area, Imperial County, California By VICTORIA R. TODD, JAMES E...SOUTHERN CALIFORNIA AND CALIFORNIA DESERT CONSERVATION AREA DEPARTMENT OF THE INTERIOR DONALD PAUL MODEL,...the Jacumba (In-ko-pah) Wilderness Study Area, Imperial County, California. U.S. Geological Survey Bulletin...(In-ko-pah) (CDCA-368) Wilderness Study Area, Imperial County, California. CONTENTS Summary Dl Abstract |  | | Report (volume) | | Resources of the Southern Inyo Wilderness Study Area, Inyo County, California U.S. GEOLOGICAL SURVEY BULLETIN...Resources of the Southern Inyo Wilderness Study Area, Inyo County, California By JAMES E. CONRAD, JAMES E. KILBURN...resources of the Southern Inyo Wilderness Study Area, Inyo County, California. U.S. Geological Survey Bulletin...WILDERNESS Bureau of Land Management Wilderness Study Area The Federal Land Policy and Management Act (Public...the Southern Inyo Wilderness Study Area (CA010-056), Inyo County, California. CONTENTS Summary Bl |  | | Report (issue) | | --8. Cross sections of roll ore bodies of the Colorado Plateau region_________________________________________...size in sandstone beds of Triassic age in the Colorado Plateau region__ 10. Histogram showing the percentage...deposits in sandstone beds of Triassic age in the Colorado Plateau region_______________________________...outcrop of the Coconino Sandstone in the Grand Canyon area, Arizona ___ --------- ______ --------- ________...and shapes of sandstone pipes in the Grand Canyon area, Arizona ___________ -------------· ·--------- ________ |  | | Report (volume) | | the Fish Creek Mountains Wilderness Study Area, Imperial County, California U.S. GEOLOGICAL SURVEY BULLETIN...the Fish Creek Mountains Wilderness Study Area, Imperial County, California By VICTORIA R. TODD, DAVID E...SOUTHERN CALIFORNIA AND CALIFORNIA DESERT CONSERVATION AREA DEPARTMENT OF THE INTERIOR DONALD PAUL MODEL,...the Fish Creek Mountains Wilderness Study Area, Imperial County, California U.S. Geological Survey Bulletin...Creek Mountains (CDCA-372) Wilderness Study Area, Imperial County, California. CONTENTS Summary Cl Abstract |  | | Report (volume) | | McCain Valley Wilderness Study Areas, San Diego County, California U.S. GEOLOGICAL SURVEY BULLETIN 1711-B...Mountains (CA-060-024B) Wilderness Study Area, San Diego County, California and for the Carrizo Gorge/Eastern...McCain Valley (CA-060-025A) Wilderness Study Area, San Diego County, California. CONTENTS Summary Bl Abstract...potential of the Sawtooth Mountains Wilderness Study Area 3 Mineral resources and mineral resource potential...Gorge/Eastern McCain Valley Wilderness Study Area 3 Introduction 3 Area descriptions 3 Previous and present investigations |  | Kelson, C. R., Crowe, D. E., Stein, H. J. (2008) Geochemical and Geochronological Constraints on Mineralization within the Hilltop, Lewis, and Bullion Mining Districts, Battle Mountain-Eureka Trend, Nevada. Economic Geology, 103 (7) 1483-1506 doi:10.2113/gsecongeo.103.7.1483 | Journal (article/letter/editorial) | | Department of Geosciences, Colorado State University, Ft. Collins, Colorado 80523 Abstract The Hilltop...located within the northern Shoshone Range, Lander County, Nevada, are part of the greater Battle Mountain-Eureka...Zn from all three districts exploited ⱕ3-m-wide quartz veins hosted mainly within upper plate Ordovician-Devonian...between quartz vein-hosted gold ± base metal mineralization (e.g., 38.3 ± 0.1 Ma: Gray Eagle mine, Bullion...and Th (115°–425°C) data from ore-bearing vein quartz, in conjunction with measured δ18OVSMOW data (–0 |  | | Report (volume) | | the Turtle Mountains Wilderness Study Area, San Bernardino County, California MAY GOVL , DOCLI"A DIP ...the Turtle Mountains Wilderness Study Area, San Bernardino County, California By KEITH A. HOWARD, JANE...STUDY AREAS: EASTERN CALIFORNIA DESERT CONSERVATION AREA, CALIFORNIA DEPARTMENT OF THE INTERIOR DONALD...the Turtle Mountains Wilderness Study Area, San Bernardino County, California. U.S. Geological Survey Bulletin...WILDERNESS Bureau of Land Management Wilderness Study Area The Federal Land Policy and Management Act (Public |  | | Report (volume) | | Resources of the Mount Limbo Wilderness Study Area, Pershing County, Nevada U.S. GEOLOGICAL SURVEY BULLETIN...Resources of the Mount Limbo Wilderness Study Area, Pershing County, Nevada By WILLIAM J. KEITH, ROBERT L....resources of the Mount Limbo Wilderness Study Area, Pershing County, Nevada. U.S. Geological Survey Bulletin...WILDERNESS Bureau of Land Management Wilderness Study Area The Federal Land Policy and Management Act (Public...the Mount Limbo Wilderness Study Area (NV-020-201). Pershing County, Nevada. CONTENTS Su m mary Abstract |  | | Report (issue) | | Idaho: Volume III: Miscellaneous Properties, Owyhee County, Idaho Earl H. Bennett, John Kauffman, and Victoria...Idaho: Volume III: Miscellaneous Properties, Owyhee County, Idaho Earl H. Bennett, John Kauffman, and Victoria...MINES . . . . . . . . . . . . . . . 2 1.4.1 Acid Mine Drainage . . . . . . . . . . . . . . . . . . . ... . . 7 1.5.3.1 Soil, Rock, Stream Sediment, and Mine Waste Sampling Procedures . . . . . . . . . . .... . . . 11 2.0 MISCELLANEOUS PROPERTIES, OWYHEE COUNTY, IDAHO . . . . . . . . . . . . . . . . . 12 2.1 |  | | Report (volume) | | the Santa Rosa Mountains Wilderness Study Area, Riverside County, California U.S. GEOLOGICAL SURVEY BULLETIN...Bldg., 2600 corridor, 18th and CSts..NW. DENVER, Colorado-Federal Bldg., Rm. 169. 1961 Stout St. LOS ANGELES...ROLLA, Missouri-1400 Independence Rd. DENVER, Colorado-Map Distribution, Bldg. 810, Federal Center FAIRBANKS...the Santa Rosa Mountains Wilderness Study Area, Riverside County, California By J.P. CALZIA, D.J. MADDEN-McGUIRE...AREAS: SOUTH-CENTRAL CALIFORNIA DESERT CONSERVATION AREA, CALIFORNIA DEPARTMENT OF THE INTERIOR DONALD |  | | Report (volume) | | Mountains Wilderness Study Area, Harney County, Oregon, and Humboldt County, Nevada U.S. GEOLOGICAL SURVEY...Mountains Wilderness Study Area, Harney County, Oregon, and Humboldt County, Nevada By ROBERT C. ROBACK...Mountain Wilderness Study Area, Harney County, Oregon, and Humboldt County, Nevada. U.S. Geological Survey...Wilderness Study Area (OR-002-081/NV-020-642) Harney County, Oregon, and Humboldt County, Nevada. CONTENTS...resources 3 Mineral resource potential 3 Introduction 3 Area description 3 Previous and present investigations |  | | Report (issue) | | Survey, Retired, 8920 West 2nd Ave., Lakewood, Colorado 80226 CONTENTS ABSTRACT .............................................................. Cu-Au Quartz-Tourmaline Veins ................................Veins ........................................ Quartz-Alunite Epithermal Gold-Silver Veins ............economic concentration of minerals in the study area. Middle Jurassic arc-related hydrothermal mineral...Mo-W porphyry-skarn systems with assock*ed Cu-Au quartz-tourmaline veins (for example, Risue Canyon and |  | | Journal (article/letter/editorial) | | occur as microcrystals with rongibbsite in the quartz vein at the type locality. Rongibbsite is named...at a small unnamed prospect in the Big Horn district, Big Horn Mountains, Maricopa County, Arizona. Noting...an underground miner’s helper at the Pine Creek mine near Bishop, California. Gibbs’s field expeditions...Freeport McMoRan Copper and Gold) at the New Cornelia mine in Ajo, Arizona. He and Gail Arrington were married...babies delivered at the Ajo hospital before the mine closed in 1984. From Ajo, Gibbs was transferred |  | Theodore, Ted G., Blair, Will N., Nash, J. Thomas, McKee, E.H., Antweiler, J.C., Campbell, W.L. (1987) Geology and gold mineralization of the Gold Basin-Lost Basin mining districts, Mohave County, Arizona, with a section on K-Ar chronology of mineralization and igneous activity, and a section on implications of the compositions of lode and placer gold. Professional Paper 1361. US Geological Survey doi:10.3133/pp1361 | Report (issue) | | Gold Basin-Lost Basin Mining Districts, Mohave County, Arizona U.S. GEOLOGICAL SURVEY PROFESSIONAL PAPER...GOLD BASIN-LOST BASIN MINING DISTRICTS, MOHAVE COUNTY, ARIZONA Placer gold nugget about 1 cm wide showing...molded partly against rounded fragment of clear vein quartz. Collected from King Tut placer workings, Lost...Gold Basin-Lost Basin Mining Districts, Mohave County, Arizona By TED G. THEODORE, WILL N. BLAIR, and...Gold Basin-Lost Basin mining districts, Mohave County, Arizona. (U.S. Geological Survey Professional |  | | Report (issue) | | POTENTIAL OF THE CONDREY MOUNTAIN ROADLESS AREA SISKIYOU COUNTY, CALIFORNIA by R. G. Coleman, R. C. Jachens...Mountain Roadless Area (570*, 670*), Klamath and Rogue River National Forests, Siskiyou County, California...Mountain Roadless Area was classified as a further planning area during the Second Roadless Area Review and...January 1979. SUMMARY The Condrey Mountain Roadless Area contains no identified metallic mineral resources...into the study area. The Blue Ledge mine, adjacent to the west boundary of the roadless area, occurs in a |  | | Report (issue) | | Search for garnet quarries in Litchfield County, Conn 9. Area search -------------------------------------10...methods for estimating the magnitude of potential mine"'al resources are needed to provide the knowledge...Several storage and r~trieval files in the Washington area now use the GIPSY system, including the project-status...feature of GIPSY and functions as a temporary holding area for records selected during the previous SELECT...specific information on garnet quarries in Litchfield County, Conn. Specific items desired include the district |  | | Report (issue) | | Geological Survey editorial standards. Denver, Colorado August 1986 Table of Contents Introduction...RECORD 16 ADD A NEW RECORD 17 RETRIEVE BY GEOGRAPHIC AREA 17 ADD A REFERENCE TO THE REFERENCE FILE 18 RETRIEVE...Location 27 Digitizing latitude/longitude point and area outline data 27 Merging of digitized latitude/longitude...fields Section, Township, and Range/ 43 Mine descriptions 43 Area outlines 43 Program revisions required...SITE NAME 59 SYNONYMS 59 SITE TYPE 59 DISTRICT/AREA 60 COUNTY 60 STATE 60 COUNTRY 61 2 DEGREE QUADRANGLE |  | | Report (issue) | | Idaho: Volume II: Flint Creek-South Mountain Area, Owyhee County, Idaho Earl H. Bennett, John Kauffman, and...Idaho: Volume II: Flint Creek-South Mountain Area, Owyhee County, Idaho Earl H. Bennett, John Kauffman, and...MINES.. . . . . . . . . . . . . . . . 2 1.4.1 Acid Mine Drainage. . . . . . . . . . . . . . . . . . . .... . . 7 1.5.3.1 Soil, Rock, Stream Sediment, and Mine Waste Sampling Procedures. . . . . . . . . . . ...1 Summary of the Flint and South Mountain Study Area. . . . . . . . . . . . . . . . 12 2.2 GEOLOGY. |  | | Report (issue) | | Boise National Forest: Volume I: Atlanta Area, Elmore County, Idaho John Kauffman Ted Erdman Earl H....Boise National Forest: Volume I: Atlanta Area, Elmore County, Idaho John Kauffman Ted Erdman Earl H....PROBLEMS AT MINES ......... ... .. . 2 1. 4. 1 Acid Mine Drainage . . . . . . . . . . . . . . . . . . . ....... 7 1.5.3.1 Soil, Rock, Stream Sediment, and Mine Waste Sampling Procedures . . . . . . . . . . ........ . .... . .. . ... . 11 2.0 ATLANTA AREA, ELMORE COUNTY, IDAHO ............ .................. 13 |  | | Report (volume) | | Resources of the Eagletail Mountains Wilderness Study Area, La Paz, Maricopa, and Yuma Counties, Arizona U...Resources of the Eagletail Mountains Wilderness Study Area, La Paz, Maricopa, and Yuma Counties, Arizona By...resources of the Eagletail Mountains Wilderness Study Area, La Paz, Maricopa, and Yuma counties, Arizona /...part of the Eagletail Mountains Wilderness Study Area (AZ-020-128), La Paz, Maricopa, and Yuma Counties...G3 Mineral resource potential G3 Introduction G3 Area description G3 Previous and present investigations |
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