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| of the Eureka and Adjoining Districts San Juan Mountains, Colorado By WILBUR S. BURBANK and ROBERT G. LUEDKE...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...________________________ _ Fault systems of Poughkeepsie Gulch ____ _ Downfaulted Red Mountain block _______...Mountain area __________________ --- ___ Poughkeepsie Gulch area ___________ ------------Mineral Point |
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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 . ...... ...'......--...-.............Silver Lake mine..... . -.-.-..--....-.---..-.-. ....................... 145 145 145 149 Iowa mine ........Royal Tiger mine......................... 159 ......--.....-....-.-....-. Buckeye mine ........... |
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| appointm ent only] Wayne and Dona Leicht, 302 Forest Ave. #0 Laguna Beach, Cal. 92651 [714]494-7695...Julius Weber Mamaroneck, New York COLORADO ISSUE #2 Articles Colorado locality index.............................. 323 by B. L. Muntyan What’s new in Colorado minerals? ...................................... Famous mineral localities: the Home Sweet Home mine ......................................................... 339 by M. I. Jacobson The San Juan Mountains of Colorado ..................................349 |
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| Handles Peak Wilderness Study Areas, Hinsdale County, Colorado U.S. GEOLOGICAL SURVEY BULLETIN 1715-B /fj&:~~:£2...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...Hinsdale County, Colorado. (Mineral resources of wilderness study areas southwestern Colorado ; ch. B)...mineral resources Colorado Redcloud Peak Wilderness. 2. Mines and mineral resources Colorado Handies Peak |
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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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| DEPOSITION IN THE UNCOMPAHGRE DISTRICT OURAY COUNTY, COLORADO WITH SUGGESTIONS FOR PROSPECTING BY W. S...Prepared in cooperation with the COLORADO METAL MINING FUND AND THE COLORADO GEOLOGICAL SURVEY BOARD Contributions...Index map of the Uncompahgre district and western San Juan Mountains. __________________________________________...ORE DEPOSITION IN THE UNCOMPAHGRE DISTRICT, OURAY COUNTY, COLO. WITH SUGGESTIONS FOR PROSPECTING By W....miles in Ouray County, southwestern Colorado, lies at the western margin of the San Juan Mountains. The |
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| Flats Wilderness Study Area, western San Juan Mountains, Colorado* by Ken Hon, Dana J. Bove, and V. J...S. Geological Survey, Federal Center, Denver, Colorado, 80225 STUDIES RELATED TO WILDERNESS Bureau...Ouray and Hinsdale Counties, Colorado. SUMMARY The western San Juan Mountains, including the American...south-central Colorado during Oligocene and Miocene time. The earliest volcanic activity in the western San Juan...the largest of these centers is the Uncompahgre-San Juan caldera complex and the associated Silverton caldera |
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| Photo on title page: Lake Fork valley from Frazer mine, Twining Fairview Mountain at right NEW MEXICO...Alteration 113 Mineralization and production 115 Questa mine 119 ELIZABETHTOWN-BALDY DISTRICT 120 Hematite Creek...Mexico and Colorado 5—Modal analyses of Tertiary granites 6—Chemical analyses of Questa mine stock 7—Correlation...11—Stratigraphic column of early Tertiary sediments at Stella mine 12—Photomicrographs of Tertiary intrusive rocks...alteration area in Straight Creek 23—Questa open pit mine Contents of Rear Pocket—listed inside rear cover |
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| drainage in the Animas River watershed, San Juan County, Colorado Com piled by Stanley E. Church1 Open-File...GEOLOGICAL SURVEY 1 Denver Federal Center, Denver, Colorado 80225 Table of Contents Chapter 1. Geologic...metal-mining related wastes in Colorado and Montana and a relative ranking method for mine wastes, , byD.L. Fey...Chapter 5. Quantifying effects of metal loading from mine drainage, by B. A. Kimball, K.E. Bencalla, and R...An investigation of the partitioning of metals in mine wastes using sequential extractions, by R.W. Leinz |
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| Telluride Colorado GEOLOGICAL SU R VEY BULLETIN Prepared in cooperation 'with the Colorado State Geological...Geological Survey Board and the Colorado Metal Mining Fund Board 1112-G Geology and Mineral Deposits...Deposits of the Area South of Telluride Colorado By JOHN S. VHAY CONTRIBUTIONS TO ECONOMIC GEOLOGY GEOLOGICAL...in cooperation with the Colorado State Geological Survey Board and the Colorado Metal Mining Fund Board...formation________________________________________ San Juan breccia_______________________-_____________-____ |
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| of the Silverton 7.5-minute quadrangle, San Juan County Colorado by Robert G. Luedke1 and Wilbur S. Burbank2...quadrangles studied in the western San Juan Mountains of southwestern Colorado ................................. 2. Aeromagnetic map of part of the western San Juan Mountains region showing location of the Silverton...quadrangle, located in the western San Juan Mountains of southwestern Colorado (fig. 1), includes almost 59...the quadrangle, became the county seat of San Juan County when the county was formed in 1876 (Henderson |
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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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| Plain_____________________ Abajo Mountains._______________ San Juan Valley_-__--__-_-_-__. Elk Ridge-_-__--_------...Ridge-_-__--_------.___-.. Alien Canyon country ___________ Grand Gulch Plateau___________ Lime Creek Valley__-___-__..-...___________________ 15 16 Navajo sandstone____ ___________________ San Rafael group (Upper Jurassic) ____________ 16 !8...rock from Duckett mine_______ Greenstone from Dream mine ________________ Low-grade ore from Dream mine_____________...Distribution..--. . ___________________________ San Juan oil field, by H. D. Miser. ____-_-_-._ Oil seeps |
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| MILEAGE L OGS. REVISED EDITION Revised Edition, COLORADO GEM TRAILS AND MINERAL GUIDE HICllAHD :--1. PEARL...an extensive ¥em and mineral collecting tour 01 Colorado, revealing the interesting places where Nature...Swallow, Publisher) 2679 South York Street Denver, Colorado 80210 - , =· - ·, BOOKS BY RICHARD M. PEARL...PEARL Exploring Rocks, Minerals, Fossils in Colorado America's Mountain: Pikes Peak and the Pikes Peak...Atlas of Colorado American Gem Trails Nature As Sculptor: A Geologic Interpretation of Colorado . Scenery |
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| Landsat multispectral scanner image of the San Juan National Forest and vicinity in early October. Red and...of 705 km. Approximate boundary of the San Juan National Forest is shown by white line. Mineral Resource...Resource Potential and Geology of the San Juan National Forest, Colorado Edited by Richard E. Van Loenen and...Minerals By Andrew G. Raby and JohnS. Dersch U.S. Forest Service U.S. GEOLOGICAL SURVEY BULLETIN 2127 ...resource potential and geology of the San Juan National Forest, Colorado I edited by Richard E. Van Loenen |
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| investigations in the Animas River watershed, Colorado to facilitate remediation decisions by the U.S...S. Bureau of Land Management and the U.S. Forest Service, March 29, 2000 Meeting, Denver, Colo. by U...24 Geology Hydrology: Loading Analysis Prospect Gulch subbasin Biology Remediation options that may produce...Interior and U.S. Department of Agriculture Abandoned Mine Lands Initiative (AMLI) was developed as a collaborative...the U.S. Bureau of Land Management and the U.S. Forest Service) and the U.S. Geological Survey (USGS) |
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| — _ ; COLORADO GEM TRAILS AND MINERAL GUIDE ! ■: ' BOOKS BY RICHARD M. PEARL Colorado Gem Trails...Trails and Mineral Guide Colorado Rocks, Minerals, Fossils America’s Mountain: Pikes Peak and the Pikes...Nature As Sculptor: A Geologic Interpretation of Colorado Scenery Guide to Geologic Literature Popular Gemology...Gemology Mineral Collectors Handbook Colorado Gem Trails The Art of Gem Cutting (With Dr. H. C. Dake)...Dake) * RICHARD M. PEARL ★ COLORADO GEM TRAILS AND MINERAL GUIDE ★ SKETCH MAPS BY MIGNON WARDELL PEARL |
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| 4=78 GEOLOGY AND ORE DEPOSITS NEAR LAKE CITY, COLORADO BY JOHN DUER IRVING AND HOWLAND BANCROFT WASHINGTON................................................ San Juan Mountains.................................................................................... San Juan tuff.......................................................... Decomposed porphyry of Deadmaii Gulch........................ 3 30 30 31 31 31 32 4................................................ San Juan region....................................... |
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| Mineral Reports for Colorado, South Dakota, and Wyoming provided to the U.S. Forest Service in Fiscal Year.............................................. 1 COLORADO .......................................................................... 3 Gunnison National Forest Crested Butte Mountain Resort Land Exchange Offer... ............ 10 Pike National Forest County of El Paso (Black Forest) Land Exchange Offer ..................... 124 Roosevelt National Forest Fossey/Paul Land Exchange Offer ............................ |
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| Intrusive Rocks ana Associated Ore Deposits in the Colorado Mineral Belt U.S. GEOLOGICAL SURVEY BULLETIN... Alaska Rm. 101,4230 University Dr. LAKEWOOD, Colorado Federal Center, Bldg. 810 MENLO PARK, California...Intrusive Rocks and Associated Ore Deposits in the Colorado Mineral Belt By Charles G. Cunningham, Charles...understand the temporal and spatial evolution of the Colorado Mineral Belt UNITED STATES GOVERNMENT PRINTING...intrusive rocks and associated ore deposits in the Colorado Mineral Belt / by Charles G. Cunningham ... [et |
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| 91 Geology and Mineral Resources of Rio Arriba County, New Mexico by E D W A R D C . B I N G L E R 1968............ Creasus mine ........................................ 77 Red Jacket mine .................... Production of sand and gravel from Rio Arriba County . . 4. Features of sand and gravel sources .....Rio Arriba County ...................... 4 2 . Geologic provinces in Kio Arriba County . . . . . ....district .................... 78 8. Mine and sample map of the Croesus mine . . . . . . . . . . . . . . 79 |
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| in the Metal-Mining Districts of the San Juan Mountains Colorado GEOLOGICAL SURVEY --*_-. BULLETIN ...in the Metal-Mining Districts of the San Juan Mountains Colorado By C. T. PIERSON, W. F. WEEKS, and F...in the metal-mining districts of the San Juan Mountains, Colorado, by C. T. Pierson, W. F. Weeks, and...p. 412-413. 1. Radioactivity. 2. Uranium ores San Juan Mountains. i. Title. (Series: U. S. Geological...areas tested for radioactivity in the San Juan region, Colorado. 44. Generalized geologic map showing |
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| Geology and Ore Deposits of the Rico District, Colorado GEOLOGICAL SURVEY PROFESSIONAL PAPER 723 ... Geology and Ore Deposits of the Rico District, Colorado By EDWIN T. McKNIGHT GEOLOGICAL SURVEY PROFESSIONAL...Dolores Mountain and vicinity --Faults of Deadwood Gulch ---------------Relation of structure to intrusive...--------------Falcon mine -------------------------------Aztec mine ---------------------------------Nora Lily mine --...--------------Forest Payroll mine -------------------------Iron Clad (Silver Clad) mine ----------------III |
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| 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 |
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| GEOLOGY AND MINERAL RESOURCES OF THE ORTIZ MINE GRANT, SANTA FE COUNTY, NEW MEXICO Open-file Report 560 By ...New Mexico 87801 March 2014 ABSTRACT The Ortiz Mine Grant, as defined by a patent issued by the US Congress...approximately 10 mi x 10 mi tract centered on the old Ortiz Mine in the eastern part of the Ortiz Mountain range...range in the southwestern part of Santa Fe County, New Mexico. The Ortiz Mountains, physiographically and...south, the Cerrillos Hills, the Ortiz Mountains, the San Pedro Mountains, and South Mountain. Proterozoic |
