 | 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...associatedigneous activity, as indicated by 31 new K-Ar and fission-track ages. Mineralization occurred...silicic porphyry. This associationis commonin many mining districtsin the Rocky Mountainsregion. waningstagesof...southern of firm evidenceto the contrary. Our new K-Ar RockyMountainsregion,havingyieldedmorethan and...Needle ß Lo Plato Mrs ß ¸Durango • >• • ß COLORADO 37 ø NEW MEXICO 0 0 /I 25 25 50 MILES 50 |  | | Journal (issue) | | 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 by J. A...10 cm tall, from the Yucca Hill claim, Park County, Colorado. Richard A. Kosnar specimen; photo by John |  | | 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...Wilderness Study Area (CO-030-217), Ouray and Hinsdale Counties, Colorado. SUMMARY The western San Juan...volcanic field that covered much of south-central Colorado during Oligocene and Miocene time. The earliest...Juan Mountains between the towns of Ouray and Lake City, Colorado (fig. 1). The study area is adjacent |  | | Journal (article/letter/editorial) | | Geology Vol. 72, 1977, pp. 1285-1320 Sunnyside Mine,EurekaMiningDistrict,SanJuanCounty, Colorado'Geochemistry...Sunnysidemine, in the Eureka mining district, San Juan County, Colorado, produces700 tons/day of gol...ore-forming fluids. The ore-forming fluids were largely K-Na-Ca solutionswhose concentrations rangedfrom 0.03...geologicaland •09 o MONTROSE iO =1 'IsUN NYs IDE MINE __ <[I •-•:1 Ii iI •I -- •' • •U•AN•O COLa...southwesternColorado showing location of the Sunnyside mine and calderas of the San Juan volcanicfield. (Modified |  | | Report (issue) | | volcanic units in the San Juan Mountains, Colorado: Recalculated K-Ar age determinations using IUGS constants...S. Geological Survey, Federal Center, Denver, Colorado 80225 CONTENTS Page Abstract................Discussion of revised K-Ar ages........................................... 1 K-Ar decay constants......Juan Mountains, Colorado.................................3 Table 2.--Recalculated K-Ar ages using IUGS...Tertiary volcanic units of the San Juan Mountains, Colorado..............................4 Appendices Appendix |  | 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 (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...the Forest that overlaps the energy-rich San Juan Basin. • It is not implied that any commodities, leasable |  | | Journal (article/letter/editorial) | | MultistageVein Ores of the Lake City District, Western San Juan Mountains,Colorado John,• F. SL^CK U.S. Geological...vein ores of the Lake City district, in the western San Juan Mountains, Colorado,have producedapproximately$12...and fluorite. At the Ute-Ulay mine, the largest producerof the district, titis assemblagehas been divided...massiverhodochrosite'and Id, late quartz-carbonate-fluorite.On a district-wide scale,the quartz-basemetal assemblage showsa...the Ute-Hidden Treasure vein systemat the Ute-Ulay mine, from quartzand sulfidesat the southwest end nearestthe |  | | Journal (issue) | | paragenesis of the Little Three mine pegmatites, Ramona district, San Diego County, California ...............25046, M .S. 905 Denver Federal Center Denver, Colorado 80225 In recent decades the science of mineralogy... 905 Box 25046 Denver Federal Center, Denver, Colorado 80225 Louis B. Spaulding, Jr. P. O. Box 807, Ramona...plus an interesting range o f rare species. The mine, first opened in 1903, continues to produce fine...Three mine is one of several mines located on the Little Three property in the Ramona district, San Diego |  | | Book (volume) | | instance, a single Spodumene crystal from the Etta Mine near Keystone on the east side of the Mount Rushmore...beds, excavations, etc.Selenite roses. BRULE COUNTY AREA: in the Oacoma zone of the Pierre Fm. On Elm...gray Barite rosette up to 5 or 6 inches. CAMPBELL COUNTY MOUND CITY, W to the Missouri R., regional hillsides...gravels, etc.petrified wood, wood opal. CORSON COUNTY LITTLE EAGLE: area ridges, slopes, stream beds...Hounds in the United States CUSTER COUNTY AREA: The November Mine, 1.2 mi. SE of the Needles Eye Tunnel |  | | Report (volume) | | . 234 " y { " ,-t .. .~,:",. I " , COLORADO "or.! _ +, (~ STATE OF .~ :'(' COL~ADO /... BULLETIN 40 RADIOACTIVE MINERAL OCCURRENCES OF COLORADO AND BlaLlllGRAPHY by James L. Nelson-Moore,...Energy COLORADO GEOLOGICAL SURVEY DEPARTMENT OF NATURAL RESUURCES STATE OF COLORADO DENVER, COLORADO 1978...provides an essentially camp I ete 11 st r ng of rad i aaet 1ve occurrences 1n Colorado, with a comprehensive...on the Colorado Plateau sparked several periods of exploratIon that ultimately led to a mining "boom ll |  | | Journal (article/letter/editorial) | | ............ 1445 1447 1447 1449 1449 1449 K-feldspar(adularia?) .......................................................................... Van Dorn mine ............................................. Countryrocksof..................................... 1453 Tower mine ................................................................. Rock from Alderman mine, Browns Canyon, Colorado .............. Age of the veins ................................................... Colorado ............................................. |  | | Book | | long (Marty, 2004 ). AFRICA widely in Litchfield County, where good crystals were taken from quartz veins...region (Brunet, I 977b ). NEW YORK Amity, Orange County. At many isolated collected sites between the towns...Mount Malosa, Chilwa alkaline province, Zomba district. "Illite" is the name of a series of incompletely...Litchfield County. Ilmenite masses and crystals from somewhere near Washington, Litchfield County, were described...Lake Road occurrence, Faraday Township, Hastings County. In fall 1994, Dan and Shelley Lambert extracted |  | | Report (issue) | | Geological of America, Boulder, INC. Place Colorado Printed in the United States by Edwards Inc...8137-1131-2 Published THE GEOLOGICAL Society Card Colorado Michigan Soctety 80301 48104 The publication...no OIL ORO OIG ZoZ 292 Boulder County Tellurides .... 294 Boulder County Tungsten ...... eeoeeesee 296...e@eeeeeeoe 323 COLORADO PLATEAU (COLORADO-UTAH-NEW MEXICO-ARIZONA) ... 323 A. Rifle area, Colorado «0s... 323...323 B. Uravan District, Colorado 324 Cope tick Rock DIsEEIcL sCoLoradO) sietss) 0001010016 «06 324 DeeGkante |  | | Journal (issue) | | $384/three years, (Canada) $231/one year, (outside USA other than Canada) $325 for one year Subscription...James M. Gebel Paul Geffner & Lisa Bennett George K. Hickox, Jr. Stuart Wilensky Wally Mann Stephanie...Spruce Ridge in King County, Washington (for quartz and pyrite) and the Rock Candy mine in British Columbia...geology major, first at Adams State College in Colorado and then later in a Master’s program at the University...locations, including the Little Gem amethyst scepter mine in Montana, the Fluorita Dulcita prospect in Arizona |  | | Book | | Bagby US Geological Survey, Menlo Park, California, USA William Bagby received a Ph.D. in Earth Science from...rocks in the Sierra Madre Occidental, Mexico. His mining industry experience includes porphyry copper exploration...Berger US Geological Survey, Spokane, Washington, USA Byron Berger has been involved in exploration for...volcanic-rock-related epithermal deposits in the Western Great Basin and Pacific Northwestern United States. Administratively...served as an Adjunct Professor, University of Colorado, and Chief, Branch of Geochemistry in the USGS |  | Gebre-Mariam, M., Groves, D. I., McNaughton, N. J., Mikucki, E. J., Vearncombe, J. R. (1993) Archaean Au−Ag mineralisation at Racetrack, near Kalgoorlie, Western Australia: a high crustal-level expression of the Archaean composite lode-gold system. Mineralium Deposita, 28 (6) 375-387 doi:10.1007/bf02431597 | Journal (article/letter/editorial) | | Porphyritic basalt ~ Flow basalt / Fault [~ ~ Gold mine zopo~ z~oo~ / >~+++++iti~ ~ Andesite '~ ...n d a area is similar to that at Kalgoorlie a n d K a m b a l d a (Travis et al. 1971; Roberts 1988)....a (Pidgeon 1986), essentially the same age as the K a m b a l d a greenstones ( 2 7 0 2 - t - 4 Ma), dated...a e r o m a g n e t i c data. Mine geology and structure In the mine environment, the stratigraphy is...zones, oriented 320-330~ ~ W, are common in the mine environment and, in places, have displaced the ore |  | Doebrich, Jeff L., Albino, G.V., Barker, C.E., Duffield, W.A., Dunn, V.C., Hanna, W.F., McFarlan, J.P., McGuire, D.J., Miller, M.S., Peters, S.G., Plouff, Donald, Raines, G.L., Sawatasky, D.L., Spanski, G.T. (1994) Resource assessment of the Bureau of Land Management's Winnemucca District and Surprise Resource Area, Northwest Nevada and Northeast California. Open-File Report Vol. 1994 (94-712) US Geological Survey doi:10.3133/ofr94712 | Report (issue) | | OF THE BUREAU OF LAND MANAGEMENT'S WINNEMUCCA DISTRICT AND SURPRISE RESOURCE AREA, NORTHWEST NEVADA AND...the Bureau of Land Management's (BLM) Winnemucca District and Surprise Resource Area, an area covering 13...Conservation Area), and the impact of mine dewatering on drainage basin groundwater resources (for example...example, the Humboldt River drainage basin). Primary objectives of this assessment include 1) identifying areas...part of their Resource Management Plan for the District/Resource Area or for other planning units such |  | | Book (edition) | | • t --•- """"" ' The Lornex copper-molybdenum mine and plant, Highland Valley, British Columbia. (By...measurements have been retained in specific cases such as mine levels when measured in feet, values of gold and...inhabited continent. Also, to those exploration and mining geologists, and the personnel of foreign geological...L. Jensen Salt Lake City, Utah CONTENTS "The mining industry is infinitely worse off today than it...the politicians' failure to recognize that the mining industry is a highly risky business." James Boyd |  | | Report (issue) | | East Mojave National Scenic Area, San Bernardino County, California by U.S. Geological Survey 1991 Open-File...East Mojave National Scenic Area, San Bernardino County, California......................................altered dacite-rhyolite samples collected at Hart Mine, Castle Mountains................................. including gossan, all collected at Hidden Hill Mine site. ......................... 204 13. Spectra...altered quartz monzonite collected at the Big Horn Mine....... 210 18. Spectra of Tertiary rocks collected |  | | Book (edition) | | Linopolis, Brazil, H Page 13: Gold, 35 mm.Eagle's est Mine, California, G Publi!>hed by Grdllit.u.o. Stefanikova43...archetype 2J Sulfosalts of PbS archetype 2.K Sulfarsenates )K zh zhemchuzhnikovite 3. Halides w !>h...H Vanadatcs 4J Arsenite!, and similar compounds 4.K Iodates -- - ---------,-. . r 9 5. Carbonates...abbreviations: Rep. (republic), prov. (province), co. (county), munic. (municipio), pref. (prefecture), dept...dept. (departement), dept. (departamento), dist. (district). Less common terms are not abbreviated, e.g. |  | | Book (edition) | | Morocco; (center, left) wulfenite, San Francisco mine, Sonora, Mexico; (center) ameihyst, Veracruz, Mexico;...rnodochrosite, N’Chwaning mine, South Africa; (lower left, center) wulfenite, Red Cloud mine, Arizona; (lower...Encyclopedia of minerals Sagiiache County Pu blic Library Saguache , Colorado DEMCO For Reference Not to...Wendell E. Wilson Library Saguache County Public Saguache, Colorado VAN NOSTRAND REINHOLD New York ...Cal and Kerith Graeber Cureton Mineral Company Colorado School of Mines Charles and Marcelle Weber Dan | | | Book (edition) | | Morocco; (center, left) wulfen ite San Francisco mine, Sonora, Mexico; (center) amethyst, Veracruz, Mexico;...Mountains, Utah; (lower le ft) rhodochrosite, N'Chwaning mine, Sou th A frica; {lower left, center) wulfenite...Encyclopedia of minerals ~~cbe County Public Library Saguache, Colorado OEMCO For Refere nee Not to...Sagtiache Co1tntr Publlc I...ibran' Saguache, Colorado ~ VANNOSTRAND REINHOLD ~ - - - - N e w York...Cal and Kerith Graeber Cureton Mineral Company Colorado School of Mines cw Charles and Marcelle Weber |  | | Report (issue) | | 1965. 1966. 1967. 1968. Numerous Federal, State, county, and local agencies and other organizations and...-___ California. _ __________________________ Colorado ______________________________ Montana. _____...Mineral-resource studies.________________ Western Belt Basin..___._______ Montana disturbed belt.________________...Mountains_--_-------------- A41 Precambrian rocks of Colorado.__________ 41 41 Mesozoic stratigraphy.__________________...field, New Mexico..---------------------------43 43 Basin and Range region----....-. ._ -45 Pacific coast |  | | Book | | The original Turin Papyrus of the Egyptian gold mine (circa 1320 B.C.), the oldest geological map extant...script on the Turin Papyrus of the Egyptian gold mine (after Ball, 1942; see chapter 3). GOLD History...GOLD 85 Geochemistry of Gold / 88 8-1 BISCHOF, K. GUSTAV: Gediegenes Gold / 89 Lehrbuch der chemischen...Clarendon Press, Oxford, 1954, pp. 197-205 8-5 RANKAMA, K., and TH. G. SAHAMA: Silver, Gold / 128 Geochemistry... C. Curtain, A. E. Hubert, H. T. Shacklette, and K. G. Doxtader: Geochemistry of Gold in the Weathering |
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