 | | Journal (article/letter/editorial) | | USI FE ROCKS AND MINER.dLIZ.4 TION NEAR RICO, COLORADO Fission-track and potassium-argonstudies of...of intrusive rocks in the vicinity of Rico, Colorado,have shownthat there are at least two periodsof...episodes. Cretaceous?-Paleocene hornblende siteof Rico. This heatingmay indicatethe presence latite rocks...kilometers east of Rico, near Hermosa Rico, Colorado,is a preciousand basemetal min- Peak (Pratt, 1976)....This bodyhas a minimumage ing camp situatedon the Dolores River in the west- of 57.2-----6.9m.y. (fissiontrack |  | | Report (volume) | | Potential and Geology of the San Juan National Forest, Colorado Edited by Richard E. Van Loenen and Anthony B...potential and geology of the San Juan National Forest, Colorado I edited by Richard E. Van Loenen and Anthony...: I 19.3.2127 1. Mines and mineral resources--Colorado-San Juan National Forest. I. Van Loenen, Richard...famous mining districts, such as those at Rico and La Plata, but there is no significant mining being...Foley, and Anthony B. Gibbons Exploration and Mining History ...................................... |  | | Report (volume) | | 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 |  | | Journal (article/letter/editorial) | | PorphyryMolybdenumMineralizationin the RicoMiningDistrict,Colorado PETER B. LARSON Department of Geology,Washington...99164-2812 Abstract The Rico miningdistrict,westernSanJuanMountains,Colorado,containsepithermal veindeposits...sedimentaryrocksthat havebeen uplifted into the Rico dome,whichis coredby a horstof Precambriangreenstoneand...1985; Brooks et al., 1986; The Ricominingdistrict,Colorado,containsa diverseassemblage of hydrothermalmineraldeposits...vein formationat Ca- mineralization in the Rico district, and to look for sapalca,Peru. Minor magmatic |  | | Report (volume) | | 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 |  | | 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...minerals of the Great American Rift in New Mexico and Colorado. Great American Rift is the name we use for a |  | | Report (issue) | | magnetite pounds magnesium manganese molybdenum molybdenite metric tons columbium (niobium) columbite nickel...million st with 0.19% Mo. [1] Arizona Banner District, Gila Co. Chillito deposit (Kennecott) reserve...massive-bedded ore both with 31% chabazite. [1] Bunker Hill District, Graham Co. Copper Creek deposit (Exxon/Newmont)...million st with 1.5% Cu. [1] Cochise (Johnson Camp) District, Cochise Co. 1-10 deposit (Cyprus/Superior) reserve...Mo, or 250 million st with 0.4% Cu. [1] Harshaw District, Santa Cruz Co. Hardshell (Asarco) deposit reserve |  | Collins, Donley S., Cobban, Robert R., Foord, Eugene E., Murphy, Jack A. (1989) Bibliography for update and revision of U.S.G.S. Bulletin 1114, Minerals of Colorado -- a 100 year record, by Edwin B. Eckel, Part A - Paper copy --Bibliography data file disks. Open-File Report Vol. 1989 (89-206) US Geological Survey doi:10.3133/ofr89206a | Report (issue) | | Survey Denver, Colorado Department of Geology, Denver Museum of Natural History Denver, Colorado NOTE FOR...revision of U.S.G.S. Bulletin 1114, Minerals of Colorado A 100 year record, by Edwin B. Eckel By Donley...Prepared in cooperation with Friends of Mineralogy - Colorado Chaptar, and the Denver Museum of Natural History...references dealing with the mineralogy of the state of Colorado. It is part of a more than 10 year effort to update...and revise U.S.G.S. Bulletin 1114, Minerals of Colorado: A 100 year record, by Edwin B. Eckel (1961). |  | | Report (issue) | | GEOLOGICAL SURVEY Locatable Mineral Reports for Colorado, South Dakota, and Wyoming provided to the U.S.............................................. 1 COLORADO ................................................San Isabel and White River National Forests Lake County Land Exchange Offer (Iocmin40) ......................... 47 White River National Forest Dillon District Land Exchange Joint Venture (Iocmin38) ......................... 138 FIGURES OR ATTACHMENTS COLORADO Pike National Forests Shepard and Associates Land |  | | Journal (article/letter/editorial) | | this paper. Anhydriteoccursin the Bully Hill district,Calif., in lodesin alaskiteporphyryand is associated...alsoregardsthegypsumandanhydriteof the Bully Hill district as of deep-seated origin, supposingthat the calciumwas...Graton, L. C., "The Occurrenceof Copper in Shasta County, Calif.," U.S. Geol. Survey Bull. 43o, p. IOO..."Geology and Ore Depositsof the Bully Hill Mining District, Calif.," Am. Inst. Min. Eng. Trans., Vol.... chalcopyrite, bornire, galena, sphalerite, molybdenite,tennantite, enargiteand hfibnerite,and the gangueminerals |  | | Report (issue) | | Theodore................................. Granite molybdenite systems, by S. 0. Ludington............................. Characteristics of the Colorado-type (Climax-type) molybdenum deposits readily recognized at...... Stratabound Precambrian sulfide deposits, Colorado and southern Wyoming, by D. M. Sheridan and W...of the Southeast Missouri base metal and barite district, by A. V. Heyl..................................structures containing Pags 3 Examples^ Skelletaa District, Sweden Hljura-Kotalenti Belt, Finland Thompson |  | | Journal (volume) | | A. Logan, District Mining Engineer C. Jenkins, Chief Geologist McK. Laizure, District W. Burling...Tucker, Reid J. Mining Engineer District Sampson, Assistant Mining Engineer District Engineer Chas...Chas. V. Averill, District Mining Engineer San Francisco Sacramento San Francisco Los Angeles Los Angeles...Junior Mining Engineer (Librarian) San Francisco San Francisco TABLE OF CONTENTS Page DISTRICT REPORTS...REPORTS OF MINING ENGINEERS—— 7 Redding Field District 7 Sacramento Field District 7 San Francisco |  | | Report (issue) | | . . . . . . . . . . . . . . . . . . 'Vasatch Mountains............................................................ .. ................... Uinta Mountains ...................................................... : ......... · Correlation with Wyoming and Colorado .. .............................................INTRODUCTION. reports are those on the Mercur district, by J. E. Spurr and S. F. Emmons; the Bingham...Bingham The senior author, J3. S. Butler, began district, by J. M. Boutwell, Arthur Keith, and field work on |  | | Report (volume) | | Volcanic Center, Chaffee and Gunnison Counties, Colorado By PRIESTLEY TOULMIN Ill and JANE M. HAMMARSTROM...volcanic center, Chaffee and Gunnison counties, Colorado. · (U.S. Geological Survey bulletin ; 1864) Bibliography:...tuff, etc. -Colorado-Chaffee County. 2. Volcanic ash, tuff, etc.-Colorado-Gunnison County. 3. Volcanism-Colorado-Chaffee...Volcanism-Colorado-Chaffee County. 4. Volcanism-Colorado-Gunnison County. 5. GeologyColorado-Chaffee County. 6...6. Geology-Colorado-Gunnison County. I. Hammarstrom, Jane Marie. II. Title. Ill. Series. QE75.B9 no. |  | | Report (volume) | | crystalline rocks Maine 1. Rocks from Aroostook 'County 2. Miscellaneous rocks5 v New Hampshire 5 Vermont...rocks New Jersey Pennsylvania Maryland and the District of Columbia 1. Peridotite and pyroxenite 2. Gabbro...Carolina Georgia Kentucky 1.. Elliott County dike 2. Crittenden County dike Tennessee Missouri Arkansas Oklahoma...1. Marquette region, Michigan 2. Crystal Falls district, Michigan 5 3. Keweenaw Point, Michigan 4. Menominee...region 6. Pigeon Point, Minnesota 5 7. Mesabi district, Minnesota 8. Miscellaneous rocks from Minnesota |  | Palache, Charles, Berman, Harry, Frondel, Clifford (1951) The System of Mineralogy (7th ed.) Vol. 2 - Halides, Nitrates, Borates, Carbonates, Sulfates, Phosphates, Arsenates, Tungstates, Molybdates, Ect. John Wiley and Sons, New York. | Book (volume) | | Verde Valley, Yavapai County, Arizona. In Nevada along the Virgin River in Clark County, and in distorted...distorted crystals from Humboldt County. From Borax Lake, San Bernardino County, California. In the Permian basin...100. Found at several mines in the Huantajaya district, calcite, embolite, cerargyrite, bromyrite, iodyrite...in great quantities during the early period of mining in these districts. An earthy variety (Buttermilk...Russia, especially at Schlangenberg, in the Altai Mountains. The mineral also has been found, although in |
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