 | | Report (volume) | | Handles Peak Wilderness Study Areas, Hinsdale County, Colorado U.S. GEOLOGICAL SURVEY BULLETIN 1715-B...Handles Peak Wilderness Study Areas, Hinsdale County, Colorado By RICHARD F. SANFORD, RICHARD I. CRAUCH...RESOURCES OF WILDERNESS STUDY AREASSOUTHWESTERN COLORADO DEPARTMENT OF THE INTERIOR DONALD PAUL MODEL...Areas, Hinsdale County, Colorado. (Mineral resources of wilderness study areas southwestern Colorado ; ch...mineral resources Colorado Redcloud Peak Wilderness. 2. Mines and mineral resources Colorado Handies Peak |  | | Report (issue) | | Bibliography and Index of Colorado Geology 1983 by Atnerican Geological Institute Colorado Geological Survey...Resources Denver, Colorado I 1987 Information Series 21 BIBLIOGRAPHY AND INDEX OF COLORADO GEOLOGY 1983...Geological Institute Colorado Geological Survey Department of Natural Resources Denver, Colorado 1987 The Colorado...opportunity employer. ii BIBLIOGRAPHY AND INDEX OF COLORADO GEOLOGY SERIALS LIST AAPG Bullett n. [Tulsa... New York, NY: Society of Mining Engineers of American Institute of Mining, Metallurgical and Petroleum |  | Lipman, P. W., Fisher, F. S., Mehnert, H. H., Naeser, C. W., Luedke, R. G., Steven, T. A. (1976) Multiple ages of mid-Tertiary mineralization and alteration in the western San Juan Mountains, Colorado. Economic Geology, 71 (3) 571-588 doi:10.2113/gsecongeo.71.3.571 | Journal (article/letter/editorial) | | nandAlteration in the WesternSanJuanMountains,Colorado PETERW. LIPMAN, FREDERICKS. FISHER, HARALDH. ][VIEHNERT...intrusionsof quartz-bearing silicic porphyry. This associationis commonin many mining districtsin the Rocky Mountainsregion...alterationandmineralization in the SanJuanMoun- minor quartz porphyry intrusionswere empIaced tains: one in the Late...Needle ß Lo Plato Mrs ß ¸Durango • >• • ß COLORADO 37 ø NEW MEXICO 0 0 /I 25 25 50 MILES 50...Son volcanic field Juan B• Bonanza LL, BA, Bachelor P, C, Creeds CO, Cochetopa S, Silverton SJ |  | | Report (volume) | | THE ! UNCOMPAHGRE PRIMITIVE AREA, "OT TTHWESTERN COLORADO - c-t SURVEY BULLETIN 1391-E Mineral Resources...Primitive Area, San Juan Mountains, Southwestern Colorado By T. A. STEVEN, P. W. LIPMAN, F. S. FISHER, U...primitive area, San Juan Mountains, southwestern Colorado. (Studies related to wilderness primitive areas)...I 19.3-.1391-E 1. Mines and mineral resources Colorado San Juan Mountains. I. Steven, Thomas August,...Primitive Area, San Juan Mountains, southwestern Colorado, and some adjoining national forest lands that |  | | Report (issue) | | organization is carrying on for the direct advancement of mining interests throughout the country than can readily...GOLD LODES OF THE CARRVILLE DIS TRICT, TRINITY COUNTY, CALIFORNIA. By DONALD FRANCIS MACDONALD. INTRODUCTION...writer spent 10 days in the Carrville district, Trinity County, Cal., and, incidental to other work,... gathered some data on its mining geology. A paper on the gold gravels x was pub lished, but baggage...written. In November, 1910, another visit to the district was made, but inclement weather handicapped the |  | | Journal (article/letter/editorial) | | Ore Deposition in the Creede Mining District, San Juan Mountains, Colorado: Part VI. Maximum Duration for...establishing that ore formation, at least for the porphyry copper-skarn-epithermal base and precious metals...silver-lead-zinc deposit in the OH vein at Creede, Colorado. Two initial textures are considered: growth-banded...productive epithermal deposit, the OH vein at Creede, Colorado. For more than half a century, D.E. White (e.g...epithermal systems are near-surface expressions of porphyry copper-style mineralization at depth (e.g., Hedenquist |  | | Report (issue) | | of the San Juan Volcanic Field, Southwestern Colorado GEOLOGICAL SURVEY PROFESSIONAL PAPER 958 •...of the San Juan Volcanic Field, Southwestern Colorado By THOMAS A. STEVEN and PETER W. LIPMAN GEOLOGICAL...Calderas of the San Juan volcanic field, southwestern Colorado. (Geological Survey Professional Paper 958) Bibliography:...16:958 1. Calderas-Colorado-San Juan Mountains. 2. Volcanic ash, tuff, etc.-Colorado-San Juan Mountains...18 Central San Juan caldera complex- Continued Bachelor caldera ......................... ........... |  | | Report (volume) | | Radioactivity in the Metal-Mining Districts of the San Juan Mountains Colorado GEOLOGICAL SURVEY --*_-...Radioactivity in the Metal-Mining Districts of the San Juan Mountains Colorado By C. T. PIERSON, W. F. WEEKS...radioactivity in the metal-mining districts of the San Juan Mountains, Colorado, by C. T. Pierson, W. F..._______________ CeboUa district..______________________________ Upper Uncompahgre district. ______ _________________________...Uranium occurrences___________ ________ __ Bonanza district..____________________ ___________________ General |  | | Book | | MINES AND MINERALS OF THE GREAT AMERICAN RIFT (COLORADO-NEW MEXICO) Sine —_—< ¢ te om At _SHT 40...MINES AND MINERALS OF THE GREAT AMERICAN RIFT (COLORADO-NEW MEXICO) Richard Walker Holmes and Marrianna...Mines and minerals of the Great American Rift (Colorado-New Mexico). Bibliography: p. Includes index...index. 1. Mines and mineral resources—Colorado. 2. Mines and mineral resources—New Mexico. I. Kennedy, Marrianna...enter must be obtained to prevent trespass. Old mine workings are dangerous and entering underground |  | | Report (volume) | | GEOLOGY AND ORE DEPOSITS OF THE ' CREEDE DISTRICT, COLORADO BY WILLIAM H. EMMONS AND ESPER S. LARSEN................................................. Mining and treatment of ores................................................................ Rhyolite porphyry................................................................................ Quartz latite porphyry..................................................................... Hornblende-quartz latite porphyry.................................... Chapter VIII |  | | Report (issue) | | Volcanic Rocks, Southeastern SanJuan Mountains, Colorado GEOLOGICAL SURVEY PROFESSIONAL PAPER 852 ...Volcanic Rocks, Southeastern San Juan Mountains, Colorado By PETER W. LIPMAN GEOLOGICAL SURVEY PROFESSIONAL...volcanic rocks, southeastern San Juan Mountains, Colorado. (Geological Survey Professional Paper 852) Includes... . . . . . . . . . Late basalt and rhyolite ·(Hinsdale Formation) . . . . . . . . . . . . . . Basaltic.... . . . . . . . . . . . . . . . . Summitville district . . . . . . . . . . . . . . . . . . . . . . . |  | | Report (volume) | | Notes on the gold lodes of the Carrville district, Trinity County, Cal., by D. F. MacDpnald...............account of the ore deposits of the Loon Creek district, Idaho, byJ. B.Umpleby................................................. Notes on the Antelope district, Nev., by F. C. Schrader................... Notes...Notes on the northern La Sal Mountains, Grand County, Utah, by J. M. Hill. Survey publications on gold............... COPPER: The Turquoise copper-mining district, Ariz., by F. L. Ransome........... Survey |  | | Journal (article/letter/editorial) | | JUAN COUNTY, COLORADO B A R B A R A and J O H N M U N T Y A N 6978 Wapiti Court Boulder, Colorado 80301...material has been obtained from a number of San Juan County mines and prospects during the last decade, in...almost ceased. COLORADO S A N J U A N C O U N T Y L I E S in southwestern Colorado. Some of the state's...vicinity of Silverton, the principal town in the county. The American Tunnel, located just north of town...of the Sunnyside mine complex and has been the major source of specimens in the county. Most museums and |  | | Report (issue) | | Deposits of the Uncompahgre (Ouray) Mining District, Southwestern Colorado Professional Paper 1753 U.S. Department...western San Juan Mountains region of southwestern Colorado. In the foreground is a broad, gently south-sloping...prospects that constitute the Uncompahgre mining district are located mostly within the cliffy slopes...Deposits of the Uncompahgre (Ouray) Mining District, Southwestern Colorado By Wilbur S. Burbank and Robert...deposits of the Uncompahgre (Ouray) mining district, southwestern Colorado: U.S. Geological Survey Professional |  | Doe, B. R., Steven, T. A., Delevaux, M. H., Stacey, J. S., Lipman, P. W., Fisher, F. S. (1979) Genesis of ore deposits in the San Juan volcanic field, southwestern Colorado; lead isotope evidence. Economic Geology, 74 (1) 1-26 doi:10.2113/gsecongeo.74.1.1 | Journal (article/letter/editorial) | | Depositsin the SanJuanVolcanicField, Southwestern Colorado LeadIsotopeEvidence B. R. DOE,T. A. STEVEN,M....other deposits (Summitville, Jasper, Red Mountain district) have values of 2ø•Pb/•ø4Pbsimilar to those of...have lead isotopiccompositions that are portant mining districts. Studies of lead in the as- more radiogenicthan...Antonito COLORADO NEW MEXICO L 0 100 KILOMETERS Fro. 1. Index map of southxvestern Colorado, showing...applied specificallyto the ores in the Creede district by Bethke et al. (1973) and by Stevenand Eaton |  | | Journal (article/letter/editorial) | | MultistageVein Ores of the Lake City District, Western San Juan Mountains,Colorado John,• F. SL^CK U.S. Geological...vein ores of the Lake City district, in the western San Juan Mountains, Colorado,have producedapproximately$12...and fluorite. At the Ute-Ulay mine, the largest producerof the district, titis assemblagehas been divided...massiverhodochrosite'and Id, late quartz-carbonate-fluorite.On a district-wide scale,the quartz-basemetal assemblage showsa...the Ute-Hidden Treasure vein systemat the Ute-Ulay mine, from quartzand sulfidesat the southwest end nearestthe |  | | Report (issue) | | of Ore Deposition in the Creede District San Juan Mountains Colorado GEOLOGICAL SURVEY PROFESSIONAL PAPER...487 Prepared in cooperation with the Colorado State Metal Mining Fund Board Geology and Structural Control...of Ore Deposition in the Creede District San Juan Mountains Colorado , By THOMAS A. STEVEN and JAMES...487 ·Prepared in cooperation with the Colorado State Metal Mining Fund Board UNITED STATES GOVERNMENT...Shallow Creek Quartz Latite ____________________ _ Bachelor Mountain Rhyolite ____________________ _ Farmers |  | | Report (issue) | | Series 30 Bibliography and Index of Colorado Geology, 1984-1989 Colorado Geological Survey Department of...Resources Denver, Colorado 1990 Information Series 30 Bibliography and Index of Colorado Geology, 1984-1989...Institute under contract to the Colorado Geological Survey Colorado Geological Survey Department of...of Natural Resources Denver, Colorado 1990 ii FOREWORD In recognition of the need to more effectively...published literature on the state's geology, the Colorado Geological Survey is pleased to release Information |  | Bove, Dana J., Hon, Ken, Budding, Karin E., Slack, John F., Snee, Lawrence W., Yeoman, Ross A. (2001) Geochronology and geology of late Oligocene through Miocene volcanism and mineralization in the western San Juan Mountains, Colorado. Professional Paper 1642. US Geological Survey doi:10.3133/pp1642 | Report (issue) | | Mineralization in the Western San Juan Mountains, Colorado U.S. Geological Survey Professional Paper 1642...Mineralization in the Western San Juan Mountains, Colorado By Dana J. Bove, Ken Hon, Karin E. Budding, John...mineralization in the western San Juan Mountains, Colorado / by Dana J. Bove ... [et al.]. p. cm. - (U.S...Geology—San Juan Mountains (Colo. and N.M.). 4. Geology—Colorado. 5. Volcanism—San Juan Mountains (Colo. and N...................................... Veins and Porphyry-Style Alteration Related to 26-25 Ma Intrusions |  | | Report (volume) | | Page (A) The New World or Cooke City mining district, Park County, Mont., by T. S. Levering__________..._________________ (B) Recent mining developments in the Creede district, Colo., by E. S. Larsen.____...Shirley, and Seminoe iron-ore deposits, Carbon County, Wyo., by T. S. Lovering*..._____:__..___..._____...geologic map and sections of the New World mining district, Mont. Wyo___-______--___--___________ 2. Cooke...basalt porphyry near Cooke, Mont ______________ 6. Correlation diagram of the New World mining district |  | | Report (issue) | | RECENT MINING DEVELOPMENTS IN THE CREEDE DISTRICT, COLORADO By ESPEK S. LAKSEN ABSTRACT The Creede...Creede district has produced over $43,000,000 worth of metal, mostly silver. By far the greater part of this...the Equity mine, which follows a reverse fault in the extreme northern part of the district. Silver in...Emmons and Larsen 1 on the Creede district was completed, the district has produced over $5,000,000 worth...detailed to the work and spent about 10 days in the district in the summer of 192T and 3 days in August, 1928 |  | | Report (volume) | | ORE DEPOSITION IN THE UNCOMPAHGRE DISTRICT OURAY COUNTY, COLORADO WITH SUGGESTIONS FOR PROSPECTING BY...Prepared in cooperation with the COLORADO METAL MINING FUND AND THE COLORADO GEOLOGICAL SURVEY BOARD Contributions...Structure map and sections of the Uncompahgre district..-.-54. Types of structural control of ore de..._____ FIGURE 32. Index map of the Uncompahgre district and western San Juan Mountains. _____________...CONTROL OF ORE DEPOSITION IN THE UNCOMPAHGRE DISTRICT, OURAY COUNTY, COLO. WITH SUGGESTIONS FOR PROSPECTING |  | | Journal (issue) | | Abraham Rosenzweig Tampa, PL Richard W. Thomssen Carson City, NV ‘ Associate Photographers Nelly Bariand...85740 602-297-6709 Articles The Iron Cap mine, Graham County, A rizona..................................Ouray County, Colorado ............... 89 by B. & J. Muntyan Anatase on quartz from Ouray County, Colorado...Saies Gale Thomssen 1601 Fairview Dr., Suite C Carson City, NV 89701 702-883-2598 Historical notes on...Finds made in Arizona (the Iron Cap mine) and in Ouray County, Colorado, are described in three articles |  | | Report (volume) | | GEOLOGY OF THE SAN JUAN REGION OF SOUTHWESTERN COLORADO BY WHITMAN CROSS AND ESPER S. LARSEN UNITED...latite-andesite._____-_-_---_-_____--__-_____-_-_________ Hinsdale formation.------- ---- --- - -----.General features...________________________ Rhyolite and granite porphyry.___ _ -_ __ _ __ Quartz Mites..._____________-------_________...__-__ Resources. ____ __ ^_____ _ ______ Metal mining.._____________-_-------__--_-______-____--_____Production...of the San Juan region, Colorado _________ In pocket 2. Relief map of Colorado showing the relation of |  | | Report (volume) | | Metadiabase sills in Negaunee Iron-formation near National Mine, Mich., by George C. Simmons ___________________...Lake sill ______________________________ National Mine sill _____________________________ Ash-flow stratigraphy...structures in the San Juan volcanic field, southwestern Colorado, by T. A. Steven, P. W. Lipman, and J. C. Olson...Garita) Tuff __________________ Carpenter Ridge (and Bachelor Mountain) Tuff ___________ Rat Creek and Nelson...Pony Trail Group in the Cortez Mountains, Eureka County, Nev., by J. Fred Smith, Jr ________________________ |
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