 | | Report (issue) | | Wilderness Study Area, western San Juan Mountains, Colorado* by Ken Hon, Dana J. Bove, and V. J. S. Grauch...S. Geological Survey, Federal Center, Denver, Colorado, 80225 STUDIES RELATED TO WILDERNESS Bureau...Area (CO-030-217), Ouray and Hinsdale Counties, Colorado. SUMMARY The western San Juan Mountains, including...volcanic field that covered much of south-central Colorado during Oligocene and Miocene time. The earliest...Mountains between the towns of Ouray and Lake City, Colorado (fig. 1). The study area is adjacent to the Big |  | | Report (issue) | | INTERIOR GEOLOGICAL SURVEY MINERAL RESOURCES OF ELKO COUNTY, NEVADA By Roscoe M. Smith Prepared in cooperation...Cave Creek district ----Charleston district_--Coal Mine district~ Contact district Cornucopia district -...Delano district Delker districtDivide district - Dolly Varden district --Edgemont district---Elk Mountain...Illustrations . Plate 1. Mineral resources map of Elko County. Figure 1. Index-map of mining districts 2. Exploratory...petroleum, through 1973 9 Temperatures of some Elko County hot springs- -- 12 Distribution of mineral deposits |  | | Journal (article/letter/editorial) | | Paao ama, Clark County. Walt Lombard0 specimen, Jeff Scovil photo. Churchill County Chalk Mountain District...District Chalk Mountain mine: calcite, cerussite, chlorargyrite, descloizite, galena, hemimorphite, leadhillite...Quartz, 14.2 cm across, Newbeny Mountains,Clark County. Steve Scott specimen, Jeff Scovil photo. Figure...Clinotyrolite spray, 3.4 mm across, Lovelock mine, Churchill County. Figure 2 (bottom). Wulfenite, 1.1 mm high...high, Chalk Mountain, Churchill County. Dan Behnke specimens and photos. Hot Springs Iron meteorite |  | | Report (volume) | | ........................................ Clark County.............................................................. Lincoln mine........................................ Bennett mine.........................prospects...................................... Elko County.................................................. CONTENTS. 5 Deposits and mines Continued. Elko County Continued. Mud Springs district Continued. Page..... 73 Copper Queen mine.................................. 74 Fourth of July mine.................... |  | | Report (issue) | | till samples collected from near Highland Valley mine in the Interior Plateau. The Survey has invested...pathfinder elements in subglacial till, Highland Valley mine area, south-central British Columbia .... 169 Elia...high-precision dating (U-Pb zircon and Re-Os molybdenite) of mineralized stocks of the Klaskish Plutonic...subglacial till samples collected in the Highland Valley mine area by Ferbey et al. (2016) and principal component...interface with the geology of the Highland Valley mine area and data from MINFILE, and Mineral Titles Online |  | | Journal (article/letter/editorial) | | Sweet Home rhodochrosite specimen mine, Alma District, Central Colorado: the porphyry molybdenum–fluorine...hrosite–fluorite in the Sweet Home Mine, Alma District, Colorado were originally mined for silver starting...For the last 13 years up until 2004, however, the mine has produced world-class rhodochrosite specimens...local quartz–molybdenite veins in the nearby area; (4) a small pegmatite within the mine with an age (25...Geological Engineering, Colorado School of Mines, 1516 Illinois Street, Golden, CO 80401, USA e-mail: pbartos@mines | | | Journal (article/letter/editorial) | | Sweet Home rhodochrosite specimen mine, Alma District, Central Colorado: the porphyry molybdenum–fluorine...hrosite–fluorite in the Sweet Home Mine, Alma District, Colorado were originally mined for silver starting...For the last 13 years up until 2004, however, the mine has produced world-class rhodochrosite specimens...local quartz–molybdenite veins in the nearby area; (4) a small pegmatite within the mine with an age (25...Geological Engineering, Colorado School of Mines, 1516 Illinois Street, Golden, CO 80401, USA e-mail: pbartos@mines |  | | Report (volume) | | Wilderness Study Area, Ouray and Hinsdale Counties, Colorado U.S. GEOLOGICAL SURVEY BULLETIN 1715-A W* ,...Wilderness Study Area, Ouray and Hinsdale Counties, Colorado By KEN HON, V. J. S. GRAUCH, and DANA J. BOVE...RESOURCES OF WILDERNESS STUDY AREASSOUTHWESTERN COLORADO DEPARTMENT OF THE INTERIOR DONALD PAUL MODEL...Counties, Colorado. (Mineral resources of the wilderness study areas southwestern Colorado ; ch. A)(U...and mineral resources Colorado American Flats Wilderness. 2. Geology Colorado American Flats Wilderness |  | | Report (issue) | | 31 University of Nevada Press, Reno, Nevada 89557 USA Copyright © 2004 by University of Nevada Press Photographs...Olivenite, 1.6-cm cluster, Majuba Hill Mine, Antelope district, Pershing County. N. Prenn collection. Photograph...Goodsprings (Yellow Pine) Mining District, Clark County John C. Kepper 91 References 467 Contributors...COLOR PLATES (following page 242) Gold, Mexican Mine Gold, Majuba Placer Pyromorphite after Galena with...with Conichalcite Gold, Round Mountain Mine Quartz, Lovelock area Acanthite Grossular, Nightingale |  | | Journal (volume) | | 182, Analysis of Aluminium Clogau Copper-Gold Mine Coal from South Africa to Europe 88, 1.52, »£i...Cobalt, Ontario Cobalt, Silver Ores at Coed Mawr Mine Coke-Oven Gases. Alcohol from Collins, Colloil ...Compass, Gyrostatic Congo Copper Output Connemara Gold Mine, Metallurgy at "* Report Consolidated Langlaagte...South- West Africa Diamonds, West African Ding Doner Mine Dolcoath Dunn 350 *306 378 253 383 (jn.d.) (m...End of Honman, 2.31,357 Dolly Varden Litigation R. Dollv Varden Silver Mine Dorr Thickeiv^rs for Rock-Bits |  | Febbo, Gayle E., Kennedy, Lori A., Nelson, JoAnne L., Savell, Michael J., Campbell, Michelle E., Creaser, Robert A., Friedman, Richard M., van Straaten, Bram I., Stein, Holly J. (2019) The Evolution and Structural Modification of the Supergiant Mitchell Au-Cu Porphyry, Northwestern British Columbia. Economic Geology, 114 (2) 303-324 doi:10.5382/econgeo.2019.4632 | Journal (article/letter/editorial) | | State University, Corvallis, Oregon 97331–5503, USA 6 Department of Earth and Atmospheric Sciences...8 AIRIE Program, Colorado State University, Fort Collins, Colorado 80523–1482, USA 9 Geosciences, University...halo (190.3 ± 0.8 Ma, 191.3 ± 0.7 Ma; Re-Os, molybdenite) that is accompanied by phyllic alteration (stage...deposit, 192.0 ± 1.0 Ma, 191.1 ± 0.8 Ma; Re-Os, molybdenite) ~1,600 m to the east-southeast. Host structures...property encompasses the Brucejack high-grade gold mine (Valley of the Kings and West zone deposits). Copper-gold | | | Report (issue) | | 3i University of Nevada Press, Reno, Nevada 89557 USA Copyright© 2004 by Uni versity of Nevada Press Photographs...te, r.6-cm cluster, Majuba Hill Mine, Antelope district, Pershing County. N. Prenn coJlection. Photograph...Goodsprings (Yellow Pine) Mining District, Clark County John C. Kepper MINERAL CATALOG 91 121 Gregory...Hen1in1orphite Azurile Barite, N1eikJe Mine Barite, '\forthun1berland Mine Bante, Rosebud t1ine Barile v;ith...inclusions Bolt½'OOdite Calcite, Meikle Mine Calcite, Getchell Mine Callaghanite Cassiterite and Hema tile |  | | Journal (article/letter/editorial) | | U–Pb age for hübnerite (MnWO4), Sweet Home Mine, Colorado Rolf L. Romer *, Volker Lüders GeoForschungsZentrum...granites. Hübnerite from the Sweet Home Mine (Alma, Colorado) formed in a Pb-rich, U-poor environment...Ma (2r). Late stage apatite from the Sweet Home Mine yields a 206Pb/204Pb–238U/204Pb isochron corresponding...Hübnerite from the Sweet Home Mine (Alma mining district, Colorado) The Sweet Home Mine, located in the Alma mining...19th century. The mineralization of the Sweet Home Mine is hosted by Precambrian igneous and metamorphic |  | 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...2. 3. 4. Map of the San Juan volcanic field, Colorado, showing location of Oligocene calderas...... |  | | Journal (article/letter/editorial) | | Mail Stop 973, Denver Federal Center, Denver, Colorado 80209 Abstract The Bald Mountain mining district...porphyry-related Cu deposit at the small Victoria mine in the Dolly Varden Mountains (Atkinson et al., 1982), replacement...pits); central and shallow (RBM; acronyms are actual mine names). The deposits are enriched in base and precious...upper part, sandstone and conglomerate. The RBM mine occurs in the upper part of the Mississippian Chainman...mined for Au, includes Cu and W skarn and Cu and molybdenite veins, but the concentrations of Cu, W, and Mo |  | | Report (issue) | | Wildgust, Cui, Clarke, and Hickin Fig. 6. Cobble to boulder conglomerate and pebbly sandstone with light-toned...than 30,000 people. For 2022, the forecast value of mine production in British Columbia is $18.2 billion...anticlinorium is the Black Lake intrusive Canada USA Fig. 1. Terrane map of the Cordilleran orogen and... B-Baker mine; L-Lawyers mine; K-Kemess mine; R-Ranch project (Thesis mine); S-Shasta mine. Informal... B-Baker mine; L-Lawyers mine; K-Kemess mine; R-Ranch project (Thesis mine); S-Shasta mine. b) Sketch |  | | Report (issue) | | Stuhini Group rocks in the past-producing Scottie gold mine area near Stewart and a Hazelton Group stratigraphy...LA-ICP-MS zircon geochronology of the Scottie gold mine area, northwestern British Columbia ..............Kitsumkalum North Coast Decar Terrace QUEST Equity Silver Mine Chilcotin-Bonaparte Bonaparte North Vancouver...rocks (Fig. 7) in the past-producing Scottie gold mine area in the southern part Fig. 7. Stuhini Group...mainly in siderite. The ash chemistry of Willow Creek mine samples is generally similar to that of Gething |  | | Book | | Bancroft Bancroft, H. PI., “History of Nevada, Colorado, and Wyoming, 15-10-1888”, San FFrancisco, (1890)...L., “Notes on Some Mining Districts in Humboldt County, Nevada”, USGS B 414 (1909). S • Science. SLMR...o/'Nevada Section One —Mining Districts CHURCHILL COUNTY ALPINE (Clan Alpine) Gold, Silver, (Molybdenum)...shortly after wards and has been inactive since. Molybdenite is said to occur at Scott’s camp, near Alpine...in the Bruner mill. Production. The Broken Hills Mine produced about $70,000 from 1913 to 1920. Geology |  | | Report (volume) | | classn_____ classification Co_______. Company, County Coll______ Collections Conini_____ Committee Cominuii____...Cleveland, Ohio. Colorado Mining Association Mining Yearbook 1940-43. Denver, Colo. Colorado Museum of Natural...2, 3), 12. (no. 1), 18 (no. 1). Denver, Colo. Colorado School of Mines: Mines Magazine vols. 32, 33;...vols. 37, 38 and Supplements A, B. Golden, Colo. Colorado University: Bulletin vols. 42 (no. 17), 43 (no... 1, 2); Series D, vols. 1 (no. 4), 2 (no. 1). Boulder, Colo. Compass of Sigma Gamma Epsilon vols. 22 |  | | Report (issue) | | Geology and Ore Deposits of the Front Range Colorado By T. S. LO\'ERING and E. N. GODDARD GEOLOGICAL...in cooperation with the Colorado State Geological Survey Board and the Colorado Metal Mining Fund ~ oopr..._ Quartz diorite and associated hornblendite_ Boulder Creek granite _________________ _ Pikes Peak granite...Pre-Cambrian deposits _________________________ _ Mine descriptions __________________________ _ 39 39...disseminations_ Cotopaxi mine _____________________ _ Copper deposits in Jefferson County __ _ F. M.D. property |  | | Journal (issue) | | Marvin Hanner Additions to the Ore Mineralogy of Colorado.................................................by Donald Grybeck Crystallized Minerals of the Colorado Mineral Belt....................................had achieved considerable fame, and the right to mine diopside was obtained that year by G eorge L. English...thereafter. In 1971 both the land and the right to mine diopside were purchased by the present owners, Schuyler...Alveum, R obert Dow, and G eorge Robinson. T he mine is now being worked interm ittently each year for |  | Weiland, Erick F., Lindemann, J.W., Connors, R.A., Meyers, W.T., Johnson, S.A., Heran, W.D. (1981) Geochemical and geostatistical evaluation of American Flats-Silverton planning units, San Juan volcanic province, Colorado. Open-File Report Vol. 1981 (81-599) US Geological Survey doi:10.3133/ofr81599 | Report (issue) | | FlatsSilverton Planning Units, San Juan Volcanic Province, Colorado by E. F. Weiland, J. W. Lindemann, R. A. Connors...FLATS-SILVERTON PLANNING UNITS SAN JUAN VOLCANIC PROVINCE, COLORADO Prepared for: United States Bureau of Land Management...Research Inc. 1626 Cole Blvd., Suite 120 Golden, Colorado 80401 September 26, 1980 BARRINGER RESEARCH...American Flats-Silverton Planning Units in southwest Colorado (fig. 1). Barringer Research Incorporated conducted...Juan Mountains, between Silverton and Lake City, Colorado (fig. 1). The study was done to further assess |  | | Report (issue) | | Oxidized Zinc Deposits of the United States Part 3. Colorado By ALLEN V. HEYL GEOLOGICAL SURVEY BULLETIN...deposits and the resources of oxidized zin.c ores in Colorado UNITED STATES· GOVERNMENT PRINTING OFFICE, WASHINGTON...19180xidized zinc deposits of the United States. Part 3. Colorado. Washington, U.S. Govt. Print. Off., 1964. vi...Bibliography : p. 88-91. 1. Zinc ores-Colorado. 2. Zinc mines and mining-Colorado. I. Title. (Series) For sale...PLATE 1. Map showing oxidized zinc deposits of Colorado. 2. Map showing ore bodies and location of known |  | | Report (issue) | | of uranium in hematite, limonite, wolframite, molybdenite, pyrite, tetrahedrite, fluorite, and the hydrous...with hematite, limonite, bornite, chalcopyrite, molybdenite,, pyrite, bismuth, gold and silver, have been...galena, sphalerite, pyrite, chalcopyrite, and molybdenite; IPOH OIFIPIOIAL UC3 01111 JOB tie tt-raniferous...magnetite-chalcopyrite deposits containing hematite ar* molybdenite with fluorite reported in one prospect; a sample...ore mineral. Kcseiusko Island, near Shakan Molybdenite lode containing various other sulphides and iron |  | | Book (volume) | | 600 to 800 feet thick in the north. ALEXANDER COUNTY FAYVILLE, area stream gravels⎯agate, jasper, rare...⎯agate, jasper; d RR siding of Clay⎯agate. CALHOUN COUNTY AREA, shores of the Mississippi R., in the Warsaw...crystals). CRAWFORD COUNTY PALESTINE, area deposits⎯Siderite. EDWARDS COUNTY AREA, T. 1 S, R. 10 E...deposits⎯Siderite. FULTON COUNTY FARMINGTON, W 6 mi. on Rte. 116 to the Rapatee No. 5 strip mine⎯pyritized gastropods...gastropods (Pennsylvanian age). GRUNDY COUNTY AREA: c Regional rd. and RR cuts and banks of Mason Cr.⎯fossils; |
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