 | | Report (issue) | | Paragenesis of the Pride of America Mine, Lake City, Hinsdale County, Colorado by Richard F. Sanford, Ann M....PARAGENESIS OF THE PRIDE OF AMERICA MINE, LAKE CITY, HINSDALE COUNTY, COLORADO By Richard F. Sanford, Ann M. Kramer...Sapinero Mesa Tuff. This small mine in the Galena District principally produced Ag, which occurs in freibergite...west of Lake City, Colorado, in Hinsdale County (Fig. 1) and belongs to the Galena District (Irving and...1947), one of many Ag-Au mining districts in the San Juan Mountains. The district lies within and on the |  | | Report (volume) | | Handles Peak Wilderness Study Areas, Hinsdale County, Colorado U.S. GEOLOGICAL SURVEY BULLETIN 1715-B...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...Areas, Hinsdale County, Colorado. (Mineral resources of wilderness study areas southwestern Colorado ; ch...mineral resources Colorado Redcloud Peak Wilderness. 2. Mines and mineral resources Colorado Handies Peak |  | | Report (issue) | | SURVEY Evolution of the Red Mountain alunite deposit, Lake City, Colorado by Dana J. Bove1 Robert O...geologic map of the Lake City caldera ....... Simplified geologic map of the Red Mountain area ....... Hydrothermal...alteration at Red Mountain .............. Cross-section showing alteration at Red Mountain ........ Distribution.... Stage 1 alunite replacing feldspar crystals ............... Stage 2 lath-shaped alunite crystals ...................... SEM micrograph of stage 2 alunite crystals ............. SEM view of early and late |  | | Report (issue) | | INTERIOR GEOLOGICAL SURVEY The Gladiator Mine, Lake City, Colorado: The mineralogy and paragenesis of an epithermal...standards and stratigraphic nomenclature. Denver, Colorado CONTENTS Abstract............................of the Lake City area, showing the location of some of the more prominent mines in Lake Mining district...Generalized geologic map of the Gladiator Mine Lake City, Colorado........................................ Topographic...which is exposed in the Gladiator mine, Lake City, Colorado, is similar in size and mineralogy to many |  | | Report (volume) | | Hydrothermaf Alteration at the Red MouQtaio Alunite., Deposit, Lake City, Colorado AVAILABILITY OF BOOKS AND...2600 corridor, 18th and C Sts., NW. • DENVER, Colorado--Federal Bldg., Rm. 169, 1961 Stout St. • LOS...Center, Rm. 1C402, 12201 Sunrise Valley Dr. • SALT LAKE CITY, Utah--Federal Bldg., Rm. 8105,125 South State...ROLLA, Mlssourl--1400 Independence Rd. • DENVER, Colorado--Map Distribution, Bldg. 810, Federal Center •...Hydrothermal Alteration at the Red Mountain Alunite Deposit, Lake City, Colorado By DANA J. BOVE and KEN |  | 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...outflow Fish Canyon Tuff (lower cliffs), near Lake City, Colo. Geochronology and Geology of Late Oligocene...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 |  | | Report (issue) | | 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 |  | | Report (issue) | | and activities (Glenn H. Allcott) Application of deposit models in U.S. Geological Survey programs (Dennis...Richard Blank) Central San Juan caldera cluster, Colorado-New stratigraphic and structural interpretations...Luncheon {Harry A. Tourtelot, presiding) Welcome by Colorado State Geologist {John W. Rold) Luncheon Address:...Au-rich Co-Cu lodes in the Blackbird mining district, Lemhi County, Idaho (J. Thomas Nash and Gregory A...types of placer gold in the KoyukukChandalar mining district, Alaska {Edwin L. Mosier, John B. Cathrall |  | Sahlström, Fredrik, Arribas, Antonio, Dirks, Paul, Corral, Isaac, Chang, Zhaoshan (2017) Mineralogical Distribution of Germanium, Gallium and Indium at the Mt Carlton High-Sulfidation Epithermal Deposit, NE Australia, and Comparison with Similar Deposits Worldwide. Minerals, 7 (11) 213 doi:10.3390/min7110213 | Journal (article/letter/editorial) | | at the Mt Carlton High-Sulfidation Epithermal Deposit, NE Australia, and Comparison with Similar Deposits...at the Mt Carlton high-sulfidation epithermal deposit in NE Australia, using electron probe microanalysis...analyzed include: Stage 1 acid sulfate alteration (alunite), Stage 2A high-sulfidation enargite mineralization...concentrations of Ga were measured in Stage 1 alunite (up to 339 ppm) and in Stage 3 dickite (up to 150...sequence (Figure 1; [30]). The most significant deposit in the northern Bowen Basin, and the only one currently |  | | Report (issue) | | 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...on acidic and metal-rich waters in the southeast Red Mountains area, near Silverton, Colo., by D. J. Bove...............................1-1 Chapter 2. Pre-mining bed sediment geochemical baseline in the Animas...leach procedures applied to metal-mining related wastes in Colorado and Montana and a relative ranking |  | | Journal (article/letter/editorial) | | from the text by simply using the code of each deposit in the chart. This code can be created by combining... . . . . 3.4. Metamorphic chromium (gemstone) deposit . . . . . . . . . . . 3.5. Chromium supply and... . . . . . . . . 11.3. Structure-bound copper deposit . . . . . . . . . . . . . . . . . . . . . . . ...present of mining and metallurgy of lead . . . . . . . . . . . 18.7.2. Past and present of mining and metallurgy...hampering our access to mineral deposits, such as mining depth controlled among others by the geothermal | | | Journal (article/letter/editorial) | | from the text by simply using the code of each deposit in the chart. This code can be created by combining... . . . . 3.4. Metamorphic chromium (gemstone) deposit . . . . . . . . . . . 3.5. Chromium supply and... . . . . . . . . 11.3. Structure-bound copper deposit . . . . . . . . . . . . . . . . . . . . . . . ...present of mining and metallurgy of lead . . . . . . . . . . . 18.7.2. Past and present of mining and metallurgy...hampering our access to mineral deposits, such as mining depth controlled among others by the geothermal |  | Corral, Isaac, Cardellach, Esteve, Corbella, Mercè, Canals, Àngels, Gómez-Gras, David, Griera, Albert, Cosca, Michael A. (2016) Cerro Quema (Azuero Peninsula, Panama): Geology, Alteration, Mineralization, and Geochronology of a Volcanic Dome-Hosted High-Sulfidation Au-Cu Deposit. Economic Geology, 111 (2) 287-310 doi:10.2113/econgeo.111.2.287 | Journal (article/letter/editorial) | | a Volcanic Dome-Hosted High-Sulfidation Au-Cu Deposit Isaac Corral,1,2,† Esteve Cardellach,1 Mercè Corbella...Panama) is a high-sulfidation epithermal Au-Cu deposit hosted by a dacite dome complex of the Río Quema...of lower Eocene (~55–49 Ma) for the Cerro Quema deposit. It was probably triggered by the emplacement of...be taken into account when exploring for this deposit type in similar geologic terranes. Introduction...(Arribas, 1995). A distinguishing feature of this deposit type is the presence of alteration halos (grading |  | Bethke, Philip M., Rye, Robert O., Stoffregen, Roger E., Vikre, Peter G. (2005) Evolution of the magmatic-hydrothermal acid-sulfate system at Summitville, Colorado: integration of geological, stable-isotope, and fluid-inclusion evidence. Chemical Geology, 215 (1) 281-315 doi:10.1016/j.chemgeo.2004.06.041 | Journal (article/letter/editorial) | | magmatic-hydrothermal acid-sulfate system at Summitville, Colorado: integration of geological, stable-isotope, and...20192, U.S.A. U.S. Geological Survey, Denver, Colorado 80225, U.S.A. c 305 Swissvale Avenue, Pittsburgh...Summitville Au–Ag–Cu deposit is a classic volcanic dome-hosted high-sulfidation deposit. It occurs in the...the Quartz Latite of South Mountain, a composite volcanic dome that was emplaced along the coincident margins...quartz monzonite porphyry intrusion underlies the district and is cut and overlain by pyrite–quartz stockwork |  | | Journal (article/letter/editorial) | | geochemistry of the Pierina high-sulfidation Au–Ag deposit, Peru: influence of hydrodynamics on SO24 –H2S...2004 Abstract The Pierina high-sulfidation Au–Ag deposit formed 14.5 my ago in rhyolite ash flow tuffs that...formation of some magmatic-steam and steam-heated alunite, a phenomenon not previously recognized in similar...for early magmatic hydrothermal and main-stage alunite (y34S=8.5x to 31.7x; y18OSO4=4.9x to 16.5x; y18OOH=2...argillicYpropylitic alteration zoning. Magmatic-steam alunite has higher y34S (8.5x to 23.2x) and generally lower |  | | Report (issue) | | of the earth science community, particularly the mining and petroleum industries, and will foster closer...Metallogeny of Archean and Proterozoic ter· ranes in the Lake Superior region ....... . P.K. Sims Metallogenetic...... . WarrenJ. NoklebergandlanM Lange Mineral deposit models-Theory and prac· tice .... Steve Ludington...mineralization in the southern Toquima Range, Nye County, Nevada .............. .Daniel R. Shawe -Session...metallization in the western San Juan caldera complex, Colorado ........ . R.I. Grouch, Ken Hon, R.L. Reynolds |  | | Journal (article/letter/editorial) | | examples from Yellowstone National Park, Wyoming, USA Sean A. Guidry *, Henry S. Chafetz Department of...Rm. 312, University Park, Houston, TX 77204-5007, USA Received 7 June 2001; accepted 29 March 2002 Abstract...diameter, and are common deposits in Yellowstone Lake. Domal mounds are characterized by siliceous precipitates...spring systems is Yellowstone National Park, Wyoming, USA. Hot springs that precipitate amorphous hydrated...Fig. 1. Map of Yellowstone National Park, Wyoming, USA. Major areas of interest include the Norris Geyser |
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