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| Deposits of the. South Silverton Mining Area, San Juan County, Colorado GEOLOGICAL SURVEY PROFESSIONAL...Prepared in cooperation with the Colorado Metal Mining Fund and the Colorado Geological Survey Board QE 75...378-A 1963 Lii Buresietidt latitioq Denver, Colorado c-1 cE U. S. Geological Survey. 75u Professional...Silverton Mining Area, San Juan County, Colorado By DAVID J. VARNES SOUTH SILVERTON MINING AREA, SAN JUAN...JUAN COUNTY, COLORADO GEOLOGICAL SURVEY PROFESSIONAL PAPER 378-A Prepared in cooperation with the Colorado |
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| Recent Collecting Activity in SAN JUAN COUNTY, COLORADO B A R B A R A and J O H N M U N T Y A N 6978...6978 Wapiti Court Boulder, Colorado 80301 Photographs by the authors; specimens from the authors' collection...material has been obtained from a number of San Juan County mines and prospects during the last decade...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 |
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| Howardsville 7.5-minute quadrangle, San Juan and Hinsdale Counties, Colorado by Robert G. Luedke 1 and Wilbur...quadrangles studies in the western San Juan Mountains of southwestern Colorado ......................... Aeromagnetic...Aeromagnetic map of part of the western San Juan Mountains region showing location of the Howardsville...quadrangle, located in the western San Juan Mountains of southwestern Colorado (fig. 1), includes almost 59...altitudes ranging from about 9,500 ft (2895 m) in the Animas River valley at the west edge of the map to 13 |
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| 1129690-R8SDMS RECLAMATION FEASIBILITY REPORT ANIMAS RIVER ABOVE EUREKA E^«^.|3lt- f 4 ^ JIM HERRON...HERRON, BRUCE STOVER AND PAUL KRABACHER COLORADO DIVISION OF MINERALS AND GEOLOGY OCTOBER, 1999 1129690-R8SDMS...FEASIBILITY REPORT ANIMAS RIVER ABOVE EUREKA JIM HERRON, BRUCE STOVER AND PAUL KRABACHER COLORADO DIVISION OF...OF MINERALS AND GEOLOGY OCTOBER, 1999 Upper Animas River Reclamation Feasibility Report TABLE OF CONTENTS...Sampling Mine Waste Sampling Watershed Chemistry Upper Animas In-stream Aluminum Upper Animas In-stream |
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| a floater specimen, Cross vein, Idarado mine, Ouray and San Miguel countries. Figure 2 (right). Cluster...Fremont County. C-O-L-O-R-A-O-O CALCITE BARBARA L. MUNTYAN Ouray County Museum Ouray, Colorado 81427...Tennessee; the Viburnum Trend district, southeastern Missouri; the Tri-State district (Missouri-Kansas-Oklahoma);...Russia. Calcite also occurs at many localities in Colorado. Further, the state is the source of calcite as...marble (from the Yule quarry at Marble in Gunnison County) that has been used for many of the great monuments |
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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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| Gkologim-in-charge. CATALOGUE OF MINERALS FOUND IN COLORADO. BY • F. M. ENDLICH. [EXTRACTED FROM THE TENTH...been adopted. tar as practicable, analyses of Colorado minerals have been given. They will aid examination...of the catalogue. systematic enumeration of the Colorado mineral species and references to the publications...Endlich, S. IN COLORADO. X. D. The continuous development of mineral resources of Colorado is productive...Geological .Report for PS75. Now, the survey of Colorado is completed, many additions of species new to |
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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...enter must be obtained to prevent trespass. Old mine workings are dangerous and entering underground |
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| REPORT ECONOMIC GEOLOGT 7 SILVERTON QUADRANGLE, COLORADO FREDERICK RANSOME WASHINGTON GOVERNMENT PRINTING...Whitman Cross........................... ........ San Juan volcanic area .......................... .......the volcanic area ......... ...........:..... San Juan formation . ...... ...'......--...-............................./................:. Methods of mining and treatment of ores....-....--. ...... ........Silver Lake mine..... . -.-.-..--....-.---..-.-. ....................... 145 145 145 149 Iowa mine ..... |
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| AND ENVIRONMENTAL GEOLOGY OF THE SUMMITVILLE, COLORADO ACID-SULFATE MINERAL DEPOSIT By J.E. Gray1 ,...in pocket Figure 1. Location map showing the San Juan volcanic field.......21 Figure 2. Schematic cross-section...the Summitville mine................... 29 INTRODUCTION The Summitville mining district has received...environmental problems related to mining activities. Summitville Consolidated Mining Company, Inc. (SCMCI), a...open-pit gold mine at Summitville during the period from 1986 to 1992. Although mining ceased in the |
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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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| Publisher Wendell E. Wilson Circulation Manager Mary Lynn Michela Editorial Board written content: Pete...Consultants President Wendell E. Wilson Vice President Mary Lynn Michela Secretary- Treasurer Patricia A. Carlon...R. Kampf Natural History Museum of Los Angeles County Arthur Roe Tucson, AZ Abraham Rosenzweig University...Behnke Famous mineral localities: the Corrego Frio mine and vicinity, Minas Gerais, Brazil .............................. 239 by C. G. Doll Across the San Juan Mountains ................................... |
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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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| it helpful to refer to 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 of wide distribution...because they occur in sufficient quantity to warrant mining for their usual products but because they furnish...William H. Storms, San Francisco. Prof. A. F. Rogers, Stanford University, Palo Alto. Colorado.........Prof...See Bauxite and Hallpysite. Asbestos. Tallapoosa County, with corundum deposits near Dudleyville; not found |
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| _________________ ___. Nevada ___________ Elko County. - ______ ... _ Star mine, Harrison Pass _____ ____ Pag« 59...63 Good Hope barite mine, Tuscarora Range _____ _ ._. ________ Humboldt County Golconda manganese-tungsten...Ltd., mine...... --_--______.______ Lincoln County__-__-----_-----_-----___ Tern Piute district.........district____ .________..__ Nevada Scheelite mine.. _ ______ Hooper No. 2 mine __ _____ _ _ Yankee Girl mine_______________...Mountains_____________.____ Desert Scheelite mine..... _______ Gunmetal mine _ ___________ _ Manganese-tungsten |
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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 |
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| Mountain Area, Needle Mountains, Southwestern Colorado by , James D. Collier 1 Open-File Report 84-336...^Department of Geology Fort Lewis College Durango, Colorado 81301 CONTENTS Abstract......................................................... History of Mining and Exploration........................... Methods...outside study area.......................... Grizzly Gulch............................................... Thunder...southwestern Colorado ............in pocket Figure 1. 2. 3. Index map of southwestern Colorado showing |
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| Smith. Director Professional Paper 138 MINING IN COLORADO A HISTORY OF DISCOVERY, DEVELOPMENT AND PRODUCTJON...location, area, and organization of the mining counties of Colorado _________________________ _ Adams County_-..._____________________ _ Alamosa County __________________________ _ Arapahoe County _________________________...Archuleta County _________________________ _ Baca CountY-----------------------------Boulder CountY------...CountY----------------------~----Chaffee County _____________________·______ _ Clear Creek County _______________________ |
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| Geologicstudiesduringrecentopen-pitminingat Summitville,Colorado,haveprovided newinformationonanepithermalacid...Summitvilledepositis locatedin the southeastern San Juan volcanicfield, approximately10 km northwestof...surfacewas the primary objectiveof underground mining in the late 1800s, when over 3,000 kg (100,000...discussion of the geologyof the Summitville dated Mining Company produced approximately depositanditsrelationship...Platorocalderaformedat about dera), the GoldenFleece mine (Uncompahgrecal30 to 29 Ma and associated ashflowspondedwithin |
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| Consultants Carson City, NV ( * O Vice President Mary Lynn Michela Secretary- Treasurer Ronald Bentley...R. Kampf Natural History Museum of Los Angeles County George Robinson National Museums of Canada Arthur...Julius Weber Mamaroneck, NY Circulation Manager Mary Lynn Michela Promotions and Book Sales Gale Thomssen...Mineralogical Research Co., 15840 E. Alta Vista Way San Jose, CA 95127. A list of other dealers in back issues...SPECIMENS from the collection of the Geology Museum, Colorado School of Mines. See page 242 for a full description |
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| 510EastPlumbLane,Reno,Nevada89502 Abstract In thePioche district, lead,zinc,silver, gold,copper, andmanganese ...priortothelateOligocene. Theserocks nowunderlie thePioche district, alongtwolow-angle detachment faults.Leadandsulfurisotope...ofdeposits atPiocheand inothermultiple-intrusion mining districts intheGreatBasin mayprovide valuable exploration...thesedataallowsomedeposits thatareisoBristol,Jackrabbit, Highland,andCometdistricts(Tschanz Interpretation lated...beddingreplacement, fissure The literature of the Pioche district includes definitive replacement, andfissurevein |
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| GEOLOGICAL SURVEY Locatable Mineral Reports for Colorado, South Dakota, and Wyoming provided to the U.S.............................................. 1 COLORADO .................................................................. 27 San Isabel and White River National Forests Lake County Land Exchange Offer (Iocmin40)...(Iocmin40) ......................... 36 San Juan National Forest Lindner Ranches Land Exchange Offer (Iocmin46.......... 47 White River National Forest Dillon District Land Exchange Joint Venture (Iocmin38) ...... |
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| and Ore Deposits ofthe Summitville District San Juan Mountains Colorado By THOMAS A. STEVEN and JAMES C...PAPER 343 Prepared in cooperation with the Colorado Metal Mining Fund Board UNITED STATES GOVERNMENT PRINTING...the Summitville district and surrounding areas. Geologic map of the Summitville district, and section showing...Index map of the San Juan Mountains, showing the location of the Summitville district._____________________...South Mountain and Little Annie Mining camp, Summit district, Colorado.____________ __________________ |
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| Broadway, 220-228 Battery Street, New York, N. Y. San Francisco, California. THE MINES HANDBOOK BALL...so successful. Allis-Chalmers Manufacturing Co. Mining Machinery Dept. OFFICES For Canadian MILWAUKEE...Canada THE MINES HANDBOOK Meeting tbe Needs of Mine and Smelter Hundreds of plants on both American...service from Superior Jaw Crusher Worthington mining equipment the from the standpoint of first cost...most wear, Worthington meets the needs of the mining industries with a complete line of products, from |
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| GEOLOGY AND ORE DEPOSITS OF TILE LEADVILLE MINING DISTRICT, COLORADO BY S. F. EMMONS, J. D. IRVING, AND G...Glaciers of the last stage _ 10 Iowa Gulch glacier_ 10 Evans Gulch glacier _ 10 Effects of glaciation on...deposition _ 12 Moraines _ 13 Moraines of_ Evans Gulch glacier.. 13 Lateral moraines _ 13 Terminal moraine...Arkansas glacier _ 14 North_ lateral_ moraine_ of Iowa Gulch glacier _ 15 Glacio-fluviatile deposits_ 15 High...Lincoln porphyry _ 46 Johnson Gulch porphyry _ 48 Mafic varieties_ 50 Evans Gulch porphyry _ 50 Mount Zion |
