| | Report (volume) | of the Leadville 1°X2° quadrangle, west-central Colorado : summary and discussion I by Alan R. Wallace...Radioactive dating-Colorado-Leadville Region. 2. Geology, Stratigraphic. 3. Geology-Colorado-Leadville Region...Appendix E. Geochronologic data listed by mining district .. ........... ............. .......... .....geochronology samples, Leadville 1°X2 o quadrangle, Colorado. III IV CONTENTS FIGURES 1. 2. 3. 4. 5. 6...of the Leadville 1°X2° quadrangle, west-central Colorado........................ 2 Map showing major geologic | | | 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...deposit is interpreted as a single pulse variant of a Climax-type hydrothermal system. Evidence for this includes...age of the end stages of mineralization of the Climax molybdenum deposit approximately 7.5 km to the | | | 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...deposit is interpreted as a single pulse variant of a Climax-type hydrothermal system. Evidence for this includes...age of the end stages of mineralization of the Climax molybdenum deposit approximately 7.5 km to the | | Lüders, Volker, Romer, Rolf L., Gilg, H. Albert, Bodnar, Robert J., Pettke, Thomas, Misantoni, Dean (2009) A geochemical study of the Sweet Home Mine, Colorado Mineral Belt, USA: hydrothermal fluid evolution above a hypothesized granite cupola. Mineralium Deposita, 44 (4) 415-434 doi:10.1007/s00126-008-0221-3 | Journal (article/letter/editorial) | geochemical study of the Sweet Home Mine, Colorado Mineral Belt, USA: hydrothermal fluid evolution above...fluorite–rhodochrosite mineralization at the Sweet Home Mine occurred coeval with the final stage of magmatic...activity and ore formation at the nearby world-class Climax molybdenum deposit about 26 to 25 m.y. ago. The...Geosciences, Virginia Tech, Blacksburg, VA 24061, USA T. Pettke Institute of Geological Sciences, University...Switzerland D. Misantoni Colorado Calumet Company Inc., P.O. Box 1169, Golden, CO 80402, USA al assemblage was | | | Report (issue) | Mendenhall, Director Bulletin 846 C THE CLIMAX MOLYBDENUM DEPOSIT COLORADO BY B. S. BUTLER and J. W. VANDERWILT...____-___-___--______--________ Previous geologic work in the district..______________________________ Page 195 196...map and sections of Climax molybdenum district. In pocket 24. A, Climax district in winter; B, Panorama...Panorama of a part of Mosquito Range including Climax district.._.______-__-___ 198 25. Recrystallized sc...--_---------_222 32. Detailed map of Climax molybdenum district..__________ In pocket 33-37. Cross sections | | | Report (issue) | The Geological Story of the Blue River Valley, Colorado, and Its Surrounding Mountains Circular 1400...The Geological Story of the Blue River Valley, Colorado, and Its Surrounding Mountains By Karl S. Kellogg...mines—The geological story of the Blue River valley, Colorado, and its surrounding mountains: U.S. Geological...the geological story of the Blue River Valley, colorado, and its surrounding mountains / by Karl S. Kellogg...978-1-4113-3966-8 (pbk.) 1. Geology--Colorado--Blue River Valley. 2. Mountains--Colorado. I. Bryant, Bruce, 1930- | | | Journal (article/letter/editorial) | (above). Pyrite, Alice Glory Hole, Clear Creek County. Cluster of intergrown crystals showing light...Figure 2 (right). Pyrite, Mountain Spring mine, Rico, Dolores County. Cluster of modified cubes; specimen...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...Pyrite is the most common sulfide mineral found in Colorado; it is found in a wide variety of occurrences | | | 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...Center, Rm. 1C402, 12201 Sunrise Valley Dr. SALT LAKE CITY, Utah Federal Bldg., Rm. 8105, 125 South State...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 | | | Journal (article/letter/editorial) | 1988; Carten et al., 1988a, 1993). At Henderson, Colorado, differences in the intensity of mineralization...addressed for the Goat Hill orebody of the Questa mine, New Mexico. † Corresponding author: email, p_s_ross@hotmail...Regional Geology The Questa mine is located in north-central New Mexico, USA, in the Taos Range of the...the Sangre de Cristo Mountains. In the mine vicinity, the Tertiary Latir volcanic field overlies a Proterozoic...foliation Stream Fault, dashed where inferred Mine shaft Contact, dashed where inferred Sulfur Gulch | | | Journal (article/letter/editorial) | example; the quartz veinsof the Bonanzadistrict, Colorado,describedby Burbank• as of moderatesulphidecontentand...him; and the ferberite4 depositsof BoulderCounty,Colorado,may belongto this class. Depositsof dolomiticzinc-leadtype...dolomiticzinc-leadtype in the Weston Pass district, Colorado, interpretedas formed at low temperaturesbut at a...: Geology and Ore Deposits of the Bonanza Mining District, U.S. Geol. Survey, Prof. Paper x69, p. 86...H. Jr.: Zoning of Ore Deposits, Leadville District, Colorado. Ecoa;. Gzo•.., vol. 29, pp. 239-240, x934 | | Burt, Donald M., Sheridan, Michael F., Bikun, James V., Christiansen, Eric H. (1982) Topaz rhyolites; distribution, origin, and significance for exploration. Economic Geology, 77 (8) 1818-1836 doi:10.2113/gsecongeo.77.8.1818 | Journal (article/letter/editorial) | soccuron both sidesof the ColoradoPlateau (in Colorado,New Mexico, Arizona, Utah, and Nevada) and in...and (8) topaz-richporphyry Mo-W depositsof the Climax and Hendersontype. Topaz rhyolite volcanicvent...Introduction occurrencein a lava flow near Nathrop, Colorado, IN 1884 Whitman Crossdescribedtopaz, A12SiO4F2...and garnet in samplesof lithophysalrhyolite lava Colorado,lessthan4 km westof what would84 years from the...beryllium depositswere discoveredin this same district (Shawe, 1968). Since these early discoveries,Cenozoic | | | 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...of 25.7 ± 0.3 Ma (2r). Late stage apatite from the Sweet Home Mine yields a 206Pb/204Pb–238U/204Pb isochron...on earlier sericite and the U–Pb age on later apatite suggests that (i) hübnerite yields accurate U–Pb...Home Mine (Alma mining district, Colorado) The Sweet Home Mine, located in the Alma mining district on | | Peterman, Z.E., Bunker, C.M., Bush, C.A., Bryant, Bruce, Marvin, R.F., Naeser, C.W., Mehnert, H.H., Izett, G.A., Obradovich, J.D., Cebula, G.T. (1981) Shorter contributions to isotope research in the Western United States, 1980. Professional Paper 1199ae. US Geological Survey doi:10.3133/pp1199ae | Report (issue) | Igneous Rocks in the South Park-Breckenridge Region, Colorado, and their Relation to the Tectonic History of... Fission-Track Dating of the Climax and Gold Meadows Stocks, Nye County, Nevada By C. W. NAESER and FLORIAN...igneous rocks in the South Park-Breckenridge region, Colorado, and their relation to the tectonic history of...(E) Fission-track dating of the Climax and Gold Meadows stocks, Nye County, Nevada, by C. W. Naeser and...48°00'- 10 KILOMETERS I EXPLANATION Tertiary syenite Mine Mesozoic sedimentary rocks Contact Paleozoic | | | Report (issue) | is either the major product (as at Climax and Henderson, Colorado, and Questa, New Mexico), or is a co-...XVT XVA XWA XWI XWY ALASKA ARIZONA CALIFORNIA COLORADO GEORGIA IDAHO MAINE MISSOURI MONTANA NEVADA NEW...Steininger, R. C., 1981, Character and origin of Climax-type molybdenum deposits: Economic Geology, 75th...of the Pine Grove-B la*n Mountain area. Beaver County, Utah: U. S. Geological Survey Open-File Report...wah wah Mountains, Beaver County, Utah (abstract): American Institute of Mining, Metallurgical and Petroleum | | | Journal (article/letter/editorial) | Accepted Manuscript The genesis of Climax-type porphyry Mo deposits: insights from fluid inclusions and...this article as: A. Audétat, W. Li, The genesis of Climax-type porphyry Mo deposits: insights from fluid...apply to the journal pertain. The genesis of Climax-type porphyry Mo deposits: insights from fluid...data on fluid inclusions and melt inclusions from Climax-type porphyry Mo deposits. Data are presented from...suggest that the mineralizing silicate melts in Climax-type porphyry Mo systems were highly evolved high-silica | | Wallace, A.R., Ludington, Steve, Lovering, T.G., Campbell, D.L., Case, J.E., Grauch, V.J.S., Knepper, D.H. (1988) Leadville 1 degree x 2 degrees Quadrangle, Colorado; a pre-assessment. Open-File Report Vol. 1988 (88-74) US Geological Survey doi:10.3133/ofr8874 | Report (issue) | GEOLOGICAL SURVEY Leadville I°x2° quadrangle, Colorado: a pre-assessment by Alan R. Wallace , Steve...standards and stratigraphic nomenclature. Denver, Colorado -Menlo Park, California CONTENTS Page Preface........... 10 3. 4. 5. Map showing tracts for Climax and porphyry-type deposits..... Map showing tracts............ 18 19 20 TABLES Table 1. 2. 3. 4. Mining districts in the Leadville quadrangle................................. Base- and precious-metal mining areas......................... 4 11 16 17 PREFACE | | | Report (issue) | SEG Symposia, October 30 and 31, 1988, Denver, Colorado RICHARD W. HUTCHINSON AND RICHARD I, GRAUCH...Brooks Range, Alaska, in 1979, prior to drilling or mining. Ground water seeping from the Red Dog deposit...«2. of the eccisemene of the Misima Gold-Silver Mine, Papua New Guinea ........ .G. I. Wilson and R....eae ie Discovery. The McLaughlin Gold Mine, Napa, Yolo, and Lake Counties, California Fre ee ieee i...HUTCHINSON Department of Geology, Colorado School of Mines, Golden, Colorado 80401 AND RICHARD I. GRAUCH | | | Report (issue) | section --4.--Map showing relationship between Climax stock, Twinridge pluton, Halfpint anticline, and...anomalies to Climax stock, Twinridge pluton, Halfpint anticline, alteration patterns, and past mining and mineral...above ground surface showing anomalies over the Climax stock, Twinridge pluton, and highs along the Halfpint...data suggest that the Twinridge pluton and the Climax stock, a much larger exposure of granitic rocks...with exposures of the Twinridge pluton and the Climax stock; (2) similar mineral composition of the two | | | Report (volume) | ____ Molybdenite_____________________________ Colorado ____________________________ New Mexico _____...Railroad Creek near Lake Chelan, Okanogan County, Wash.; B, From a prospect near Lake Tahoe, Calif______________________...porphyry (?) carrying molybdenite along veinlets, Climax, Colo______ _________ III. A, Radial spherule of...Creek Mountains, 4 miles south of Gold Hill, Tooele County, Utah; B, Sericitized quartz porphyry breccia with...(?) in granite, George Fast's mine, near La Trinidad, Sahuaripa district, Sonora, MexicoVII. Ends of radial | | | 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...enter must be obtained to prevent trespass. Old mine workings are dangerous and entering underground | | | Report (issue) | Ore Deposits of the· Kokomo-Tenmile District, Colorado By M. H. BERGENDAHL and A. H. KOSCHMANN . I...PAPER 652 Prepared in cooperation with the Colorado Mining Industrial Development Board .. 1\ UNITED...ores-----------------------------Mine descriptions----------------------------------Wilfley-Kimberly mine __ --------________________...Consolidated mine, Eldorado and Wilson mines, Felicia Grace mine, and Champion (New York) mine----------...Page PLATE 1. Geologic map of Kokomo-Tenmile district------------------------------------------------------ | | | Journal (article/letter/editorial) | FE ROCKS AND MINER.dLIZ.4 TION NEAR RICO, COLORADO Fission-track and potassium-argonstudies of intrusive...intrusive rocks in the vicinity of Rico, Colorado,have shownthat there are at least two periodsof igneous...several kilometers east of Rico, near Hermosa Rico, Colorado,is a preciousand basemetal min- Peak (Pratt, 1976)...axis of about 5 kin. The dome consists in the Colorado mineral belt (Cunningham et al., of uplifted Mississippianto...rocksthat have been uplifted more than 2 kin. track, apatite), indicatingthat the rock had been Detailed st | | Cao, Chong, Shen, Ping, Pan, Hongdi, Zheng, Liming, Li, Changhao, Feng, Haoxuan (2020) The formation mechanism of reduced porphyry Mo deposits in the West Junggar region, Xinjiang: The Suyunhe example. Ore Geology Reviews, 117. 103286 doi:10.1016/j.oregeorev.2019.103286 | Journal (article/letter/editorial) | Changhao Li2,3, Haoxuan Feng2,3 4 1. College of Mining Engineering, North China University of Science...address: No. 19, Beitucheng Western Road, Chaoyang District, 100029, Beijing, China 17 18 19 20 21 22 23...world, namely arc-related Endako-type, rift-related Climax-type and collision-related 55 Dabie-type Mo deposits...are commonly dominated by H2O-NaCl-(CO2) (e.g. Climax Mo deposit, 62 Audétat, 2015; Henderson Mo deposit...conduct magmatic minerals (e.g. biotite, zircon and apatite) chemical compositions to 89 clarify the essential | | Lipman, P. W., Fisher, F. S., Mehnert, H. H., Naeser, C. W., Luedke, R. G., Steven, T. A. (1976) Multiple ages of mid-Tertiary mineralization and alteration in the western San Juan Mountains, Colorado. Economic Geology, 71 (3) 571-588 doi:10.2113/gsecongeo.71.3.571 | Journal (article/letter/editorial) | nandAlteration in the WesternSanJuanMountains,Colorado PETERW. LIPMAN, FREDERICKS. FISHER, HARALDH. ][VIEHNERT...formation of the Uncompahgre,San Juan, Silverton, and Lake City calderas. The richest ore depositsare associatedwith...silicic porphyry. This associationis commonin many mining districtsin the Rocky Mountainsregion. waningstagesof...Needle ß Lo Plato Mrs ß ¸Durango • >• • ß COLORADO 37 ø NEW MEXICO 0 0 /I 25 25 50 MILES 50...SL, Son Luls H, Mt. Hope U, L, UN, Lake City Lost Lake Platore Ute Creek Uncompahgre Fro | | | Journal (article/letter/editorial) | MICANITE, COLORADO E. Wtu. Herwucn, UniversityoJ Michigan,Ann Arbor, Mi.chigan. ABsrRAcr The Climax pegmatite...pegmatite of the Micanite district in Colorado contains unusually large masses of cordierite, which is altered...IurnooucttoN The Micanite pegmatite district iies acrossthe Park-Fremont County line in south-centralColorado...Sterrett (1923,p.53), who recognizedcordieritein the Climax deposit. The pegmatite was studied by the writer...they were reopened by the Colorado Feldspar Company of Canon City, Colorado, and moderate quantities of |
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