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| 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...p. 412-413. 1. Radioactivity. 2. Uranium ores San Juan Mountains. i. Title. (Series: U. S. Geological..._______________ CeboUa district..______________________________ Upper Uncompahgre district. ______ _________________________ |
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| August 2013 BARBARA L. MUNTYAN P.O. Box 495 Ouray, Colorado 8 I427 hodochrosite, a manganese carbonate with...botryoids at San Luis, Argentina. Rhodochrosite has also been found in many localities in Colorado, particularly...particularly in the mines of the San luan Mountains in the southwestern part of the state. It occurs in colors...it i s one of the most recognized and coveted Colorado minerals. partiY DO e the presence of a mix...occurs in significant amounts in many mining districts of the Colorado mineral belt, a large, elongated, |
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| 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...minerals of the Great American Rift in New Mexico and Colorado. Great American Rift is the name we use for a |
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| Episodic Introduction of Metallic Nanoparticles into Bonanza Epithermal Ores James A. Saunders Department of...Geography, Auburn University, Auburn, AL 36849, USA; E-Mail: saundja@auburn.edu; Tel.: +1-334-844-4884...sulfidation (LS) epithermal deposits in the western USA often show evidence of the former presence of nanoparticle-sized...precious-metal and silica phases in the highest grade (bonanza) ores. Here, nanoparticles are defined to have...deposited to form the banded bonanza veins typical of many western USA epithermal deposits. Chalcopyrite |
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| of COLORADO ED RAINES Geology Museum Colorado School of Mines 1310 Maple Street Golden, Colorado 80401...Figure 1. Camp Bird mine, level 2, Sneffels district, Ouray County. Raines-Pettem collection, photographer...photographer unknown. B etween 1868 and 1922, Colorado produced almost 260 million pounds of copper. Nearly 100...from the Leadville district, with another 50 million pounds mined in San Juan County (Henderson 1926).... During the twentieth century, the Gilman district surpassed Leadville in total copper production with |
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| . . . . . . . . . . . . . . . . . 1 Chapter I. Mining Districts of Counties and the State of Utah. .... . . . . . . . . . . . . . . . . . . . . . . 1 County Listings. . . . . . . . . . . . . . . . . . . ... . . . . . . . . . . . . . . . . 1 Chapter II. Mining Districts of Utah . . . . . . . . . . . . . . .... . . . . . . . 4 Mineral Localities Listed by County . . . . . . . . . . . . . . . . . . . . . . . .... . . . . . . . . . . . . . . . . . . 7 Beaver County . . . . . . . . . . . . . . . . . . . . . . . |
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| The Triangle of Colorado Mountains of Minerals Contributors David W. Bunk, Robert B. Cook, Don Earnest... Contents PAGE4 PAGE 10 4 The San Juan Triangle of Colorado Ho for the San Juans! by Duane A. Smith, Mark...ocated in southwestern Colorado and covering over 31,000 square kilometers, the San Juans are some of the...not until the last 25 years of the 1800s that the San Juans began revealing the extent of their mineral...In 1896 world-renowned mining engineer Thomas ''T.A." Rickard called the San Juans one of Colorado's |
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| Julius Weber Mamaroneck, New York COLORADO ISSUE #2 Articles Colorado locality index.............................. 323 by B. L. Muntyan What’s new in Colorado minerals? ............................................. 339 by M. I. Jacobson The San Juan Mountains of Colorado ..................................349...10 cm tall, from the Yucca Hill claim, Park County, Colorado. Richard A. Kosnar specimen; photo by John...Natural History for conceiving the idea of a second Colorado issue and for helping a great deal in bringing |
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| inch on edge, from the Henderson mine, Clear Creek County. Figure 2 (right). Green fluorite encrusted with...Mountain Wilderness area near Columbine Lake, La Plata County; largest crystal measures 1.25 inches on edge;... FLUORITE BARBARA L. MUNTYAN Ouray County Museum Ouray, Colorado 81427 Mineral photographs by John R...locations in Mexico; in Elmwood, Smith County, Tennessee, and in Hardin County, Illinois, in the United States;...eastern Russia. It also occurs in many localities in Colorado, where it is found in colors ranging from pale |
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| at 13:31 09 June 2016 Colorado boasts numerous localities where fine sphalerite specimens have been found...reported from numerous localities worldwide. Fine sphalerite specimens, for example, have been found at Elmwood...Elmwood, Tennessee; the mines of the Tri-State district of Missouri-OklaDownloaded by [University of Nebraska...We1I-crystaIIized examples of sphalerite also occur at many localities in Colorado, in shades of amber, emerald-...marmatite), pink, or dark red (Eckel et al. 1997). Sphalerite crystallizes in the hextetrahedrat class of the |
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| Minerals of Colorado: A 100- Year Record By EDWIN B. ECKEL GEOLOGICAL SURVEY BULLETIN 1 1 14 A...knowledge____________________________________ Future of Colorado mineralogy______________________________________...mineral localities and metallic mineral deposits of Colorado ________________________________ In pocket III...mineral localities and metallic mineral deposits of Colorado, has not been included in this reprint. Many of...especially Fischer and others, 1946). MINERALS OF COLORADO: A 100-YEAR RECORD By EDWIN B. EcKEL ABSTRACT |
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| description of the geology, mining history, and production of the major gold-mining districts in 21 States...relations ---------------------------History of gold mining and trends in production_ J\labama -----------...--------------Cleburne County ----------~----------------- Tallapoosa County --------------------------Alaska...------------------Cochise County -----------------------------Gila County --------------------------------Greenlee...ee County ----------------------------R[aricopa County ----------------------------R[ohave County -- |
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| Ore Deposits of the Eureka and Adjoining Districts San Juan Mountains, Colorado By WILBUR S. BURBANK...with the Colorado State Mining Industrial Development Board A study of part of the western San Juan Mountains...Tertiary volcanic rocks_- ___ - ___________________ _ San Juan Formation ________________ -------Silverton Volcanic...___________________ _ Picayune Formation _______ ------ ______ _ Eureka Tuff ___________________________ _ Burns Formation...___________________ _ Cauldron ring-fault belt ________________ _ Eureka graben ________________________ _ Fault systems |
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| COLORADO STATE GEOLOGICAL SURVEY BOULDER R. D. GEORGE, State Geologist BULLETIN 9 GEOLOGY AND ORE DEPOSITS...OF THE BONANZA DISTRICT SAGUACHE COUNTY COLORADO By HORACE B. PATTON 1915 DENVER,COLORADO EAMES BROTHERS...DOI: https://doi.org/10.58783/cgs.b09.vtso7767 Colorado State Geological Survey. Bulletin No. 9, Plate...rnor of Colorado LIVINGSTON FARRAND ______________________ President University of Colorado HowARD C...TRANS:\IITTAL ST.I.TE GEOLOGICAL SuRVEY, UNIVERSITY OF CoLORADO, December 2, 1916. Governor George A. Carlson |
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| Downloaded by [University of California, San Diego] at 15:26 22 February 2016 - Featured Mineral at...(above). Pyrite, Alice Glory Hole, Clear Creek County. Cluster of intergrown crystals showing light...(right). Pyrite, Mountain Spring mine, Rico, Dolores County. Cluster of modified cubes; specimen 2 by 2 inches;...C*O*L*O*R*A*D*O PYRITE BARBARA L. MUNTYAN Ouray County Museum Ouray, Colorado 81427 Mineral photographs by John R...Park City, Utah; Washington State; and numerous Colorado localities. Pyrite crystallizes in the isometric |
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| (1) Wolfsberg, Germany. (2) Red Mountain district, Colorado, USA. (3) Pb9 Sb22 S42 . Occurrence: A constituent...fülöppite, cassiterite, stannite, andorite, pyrite, sphalerite, chalcopyrite, arsenopyrite, galena. Distribution:...Noire, Finistère, France. Fine crystals from the San José, Itos, and other mines, Oruro, Bolivia. At...Mountain district, San Juan Co., Colorado; from the Morey mine, Morey district, Nye Co., and Eureka, Eureka...Eureka Co., Nevada, USA. In Canada, from Bonanza Creek, Bridge River district, British Columbia; and the |
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| 4=78 GEOLOGY AND ORE DEPOSITS NEAR LAKE CITY, COLORADO BY JOHN DUER IRVING AND HOWLAND BANCROFT WASHINGTON........................................ Official mining districts..................................................................................... San Juan Mountains.................................................................................... San Juan tuff............................................volcanic group....'................................... Eureka rhyolite...................................... |
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| MANGANESEMINERALSOF THE SUNNYSIDE VEINS, EUREKA GULCH,CoLoRADo ' W. S. BunsaNK,t U. S. GeologicalSurvey...geologic survey carried on jointly by the State of Colorado and the United States Geological Survey has undertaken...undertaken the remapping of a number of the San Juan mining districts. Much attention has been given to...mineralogy of the veins since only a few of the San Juan ores have been studied in the light of modern...the manganese minerals of the Bonanza district2 in the northeastern San Juan and of the manganiferous base-metal |
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| DEFINITION OF SOUTH A MINERAL CENTRAL BELT COLORADO. IN • JOHN W. GABELMAN. CONTENTS. PAGE Abstract............... Geologichistory of south central Colorado ................................ 180 182 182.................................. South central Colorado mineral belt ...................................morethan$100,000production.............. 193 194 194 Bonanza ........................................................................... 196 196 Areas of district definitionwith lessthan $100,000production... |
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| The last Wild West Silver Mining Camp in Colorado T he Creede mining district, located at a lofty elevation...Grande in the scenic and rugged San Juan Mountains of southwestern Colorado. Although silver was discovered...2005). The deposit turned out to be a short-lived bonanza, but within a year word about the rich strike spread...Amethyst, Last Chance, Commodore, and Bachelor. The mining encampment grew from a small settlement to a town...assortment of Wild West characters who gravitated to mining boom towns. In 1890 the settlement was unofficially |
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| 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...the Ute-Ulay mine, the largest producerof the district, titis assemblagehas been divided into four stages(from...massiverhodochrosite'and Id, late quartz-carbonate-fluorite.On a district-wide scale,the quartz-basemetal assemblage showsa...ed in minerals from many veins throughout the district. All observedinclusionsare simpleliquid-vaportypeswithout |
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| from deep in the Cresson Mine, Cripple Creek, Colorado, analyzed by Unger (2008), contained 693 ppm Mo...Rose, Buena, and Golden Age Mines) of Jamestown, Colorado, contained similar concentrations of Au, Mo, and...minerals, and the reevaluation of many historic mining districts that took place in the latter half of...Ortiz 3, 4 30. Central City 3, 4 31. Boulder County 3, 4 32. Black Hills 3, 4 33. Golden Sunlight...serpentinized peridotite) from diatremes in the Colorado Plateau (Smith, 2010). Smith (2010) suggested |
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| The endsheet maps are reprinted from The Mexican Mining Industry 1890-1950 by Marvin D. Bernstein, by permission... CONTENTS • Foreword lX Preface Xl Important Mining Districts 1 Discovery and Developments in Mexico...introduction contains an interesting summary of the mining history and the development of mineralogy. It also...The author discusses eight of the more important mining districts in Mexico, which produce fine mineral...geologists, mineralo- LX x I Foreword gists, and mining engineers, but also for mineral and gem collectors |
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| The endsheet maps are reprinted from The Mexican Mining Industry 1890-1950 by Marvin D. Bernstein, by permission...is * CONTENTS Foreword Preface Important Mining Districts Discovery and Developments in México...introduction contains an interesting summary of the mining history and the development of mineralogy. It also...The author discusses eight of the more important mining districts in México, which produce fine mineral...geologists, mineralo- x / Foreword gists, and mining engineers, but also for mineral and gem collectors |
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| ............................................. Colorado........................................................................................ 102 District of Columbia ....................................to refer to Geological Survey Bulletin 507, "The mining districts of the western United States," and to...abundant it may have been completely exhausted by mining or quarrying. Deposits of minerals that are widely...because they occur in sufficient quantity to warrant mining for their usual products, but because they furnish |
