 | | Report (issue) | | The Eureka Mining District Nevada By THOMAS B. NOLAN GEOLOGICAL SURVEY PROFESSIONAL PAPER 406 Prepared..._ Pogonip group _____________________________ _ Eureka quartzite ___________________________ _ Hanson...of the ores _______________________ _ Mines and mining ______________ __________________ _ Production...the Eureka mining district, Nevada. 2. Geologic sections of the Eureka mining district, Nevada. 3. Geologic...Geologic structure map of the Eureka mining district, Nevada. UI 24 25 26 26 26 26 27 27 27 27 28 28 |  | | Report (issue) | | Replacement Deposits Part I Bald Mountain Gold Mining Region, Northern Black Hills, South Dakota By JAMES...City Mining District, Utah By CALVIN S. B ROM FIELD Gold in the Eureka Mining District, Nevada By DANIEL...and THOMAS B. NOLAN Gold in the Central City Mining District, Colorado By ALAN R. WALLACE U.S. GEOLOGICAL...bibliographies. Contents: pt. 1. Bald Mountain gold mining region, northern Black Hills, South Dakota / by...City mining district, Utah / by Calvin S. Bromfield. Gold in the Eureka mining district, Nevada / by |  | | Journal (issue) | | Rosenzweig Tampa, Florida Richard W. Thomssen Reno, Nevada photography Nelly Bariand Paris, France Wemer Lieber...quartz, 10 cm tall, from the Yucca Hill claim, Park County, Colorado. Richard A. Kosnar specimen; photo by...significant mineral localities in C o l o r a d o ,by county. In addition, there is a complete listing o f all...LOCALITY INDEX BOULDER COUNTY Caribou Mine Caribou (near Nederland), Caribou District (Silver, Uraninite... Copper Rock Ward District (Azurite, Malachite, Cerussite, Galena) Gold Hill Gold Hill District (Nagyagite, |  | | Journal (article/letter/editorial) | | Ridge National Laboratory, Oak Ridge, TN 37831-611O, USA (Received September 2, 1992; revised and accepted...geothermal systems, e.g., calcite, quartz, chlorite, epidote, alkali feldspar and smectite. An agreement of...SYSTEMS kali feldspar-, smectite-, chlorite-, and epidote-water are taken from O'Neil et al. (1969), Matsuhisa...for a variety of silicates, including secondary epidote (E), feldspar (F), chlorite (C), and smectite (M)...silicates including chlorite (C), smectite (M), epidote (E) and alkalifeldspar (F). The dashedlines are |  | | Journal (article/letter/editorial) | | Abstract The Sunnysidemine, in the Eureka mining district, San Juan County, Colorado, produces700 tons/day...veinsfilling faultsandfracturesalongthe northernsideof the Eureka graben,whichformedduring resurgent doming of the...northerlyflow until they encountered the structuresof the Eureka graben. Here the primary mechanismof precipitationwas...depositionat the Sunnysidemine, Eureka mining district, San Juan County, Colorado (Fig. 1). The rediscoveryin... Summary of Production,SunnysideMine, San Juan County, Colorado Metal 1974t Average ore= grade--1974 |  | | Report (issue) | | BEDROCKS IN THE ANIMAS RIVER HEADWATERS, SAN JUAN COUNTY, COLORADO by George A. Desborough1 and Douglas...chlorite 6.5 trpy chlorite, calcite, epidote, mica 1.02 1.4 chlorite, epidote, orthoclase, trace mica 2.29...6 chlorite, epidote, trace mica 1.94 Drainage dacite lava 1.8 orthoclase, epidote, chlorite 1.94... 2.4 orthoclase, epidote, chlorite 3.56 dacite lava 0.96 orthoclase, epidote, chlorite 1.18 dacite... 2.1 calcite, epidote, chlorite, orthoclase 2.6 dacite lava 2 chlorite, epidote, orthoclase, calcite |  | | Report (volume) | | Geology of tlie Rodeo Greek N and Eureka Cbunty, Nevada -.-.-, ..-.' *.":. -. '.: '' .-J- ' ,>. ;'...Creek NE and Welches Canyon Quadrangles, Eureka County, Nevada flv JAMES G. EVANS G K () 1, () <; I C...quadrangles, Eureka County, Nevada. Bibliography: p. Supt. of Docs, no.: I 19.3:1^73 1. Geology--Nevada Eureka...quadrangle, Nevada --In pocket 2. Geologic map of the Welches Canyon quadrangle, Nevada __In pocket HI...FIGURE 1. Index map of study area in north-central Nevada ....... 2. Stratigraphic column showing Paleozoic |  | | Report (issue) | | MINERALS OF NEVADA MINERALS OF NEVADA Peer Hen By CASTOR oan eGORY.C.oFER DOCK NEVADA AND BUREAU... UNIVERSITY Reno & Las Vegas OF NEVADA PRESS GEOLOGY Nevada Bureau of Mines and Geology Special...University of Nevada Press, Reno, Nevada 89557 USA Copyright © 2004 by University of Nevada Press Photographs...otherwise noted Map of Mining Districts and significant mineral occurrences of Nevada by Nevada Bureau of Mines...Cataloging-in-Publication Data Castor, Stephen B, Minerals of Nevada / Stephen B. Castor and Gregory C. Ferdock.— Ist |  | | Journal (article/letter/editorial) | | 102, pp. 1129–1155 Bald Mountain Gold Mining District, Nevada: A Jurassic Reduced Intrusion-Related Gold...Colorado 80209 Abstract The Bald Mountain mining district has produced about 2 million ounces (Moz) of...with exhumation made them amenable to open-pit mining and processing using cyanide heap leach methods...methods. Introduction MINERAL DEPOSITS in Nevada account for about 70 percent of the Au produced in the United...Carlin-type Au deposits in the Carlin, Battle Mountain-Eureka, Getchell, and Independence (Jerritt Canyon) trends |  | | Report (issue) | | The Stratigraphic Section in the Vicinity of Eureka, Nevada GEOLOGICAL SURVEY PROFESSIONAL PAPER 276 The... The Stratigraphic Section in the Vicinity of Eureka, Nevada By T. B. NOLAN, C. W. MERRIAM, and J. S. WILLIAMS...the pre- Tertiary stratigraphy of east-central Nevada UNITED STATES GOVERNMENT PRINTING OFFICE, WASHINGTON...Ninemile formation. _____ Antelope Valley limestone. Eureka quartzite_______ Hanson Creek formation. _ Western...dolomite__________... Devonian system.__________-_-_-__--_____. Nevada formation_________--______--. Beacon Peak dolomite |  | | Report (volume) | | General Geology of the Jackson Mountains Humboldt County, Nevada By RONALD WILLDEN CONTRIBUTIONS TO GENERAL...BULLETIN 1141-D Prepared in cooperation with the Nevada Bureau of Mines UNITED STATES GOVERNMENT PRINTING...Jackson Mountains and nearby areas in Humboldt County, Nev. Suggested correlation of the Tertiary rocks...the Jackson Mountains and other areas in Humboldt County. Nev. Page Index map.________________________..._____ D3 Generalized geology of northwestern Nevada.______________ Happy Creek volcanic series in the |  | | Journal (article/letter/editorial) | | GEOLOGISTS 1980 MultistageVein Ores of the Lake City District, Western San Juan Mountains,Colorado John,• F...Abstract Polymetallic vein ores of the Lake City district, in the western San Juan Mountains, Colorado,have...the Ute-Ulay mine, the largest producerof the district, titis assemblagehas been divided into four stages(from...massiverhodochrosite'and Id, late quartz-carbonate-fluorite.On a district-wide scale,the quartz-basemetal assemblage showsa...ed in minerals from many veins throughout the district. All observedinclusionsare simpleliquid-vaportypeswithout |  | | Report (issue) | | INTRODUCTION Geographic Setting Geologic Setting Mining History AML INITIATIVE S TUDIES Geologic Studies...ILVERTON Geology Geomorphological Analysis of the Eureka-Howardsville Reach Hydrology: Loading Analysis...in remediating watersheds impacted by historical mining activities (AML 5-year plan, http://amli.usgs.gov/amli)...quality was presumed to be impacted by historical mining activities. The Animas River watershed (fig. 1)...the March 29, 2000 meeting. Not all historical mining sites within the watershed are on public lands |  | | Report (volume) | | and Handles Peak Wilderness Study Areas, Hinsdale County, Colorado U.S. GEOLOGICAL SURVEY BULLETIN 1715-B...and Handles Peak Wilderness Study Areas, Hinsdale County, Colorado By RICHARD F. SANFORD, RICHARD I. CRAUCH...and Handles Peak Wilderness Study Areas, Hinsdale County, Colorado. (Mineral resources of wilderness study...Peak (CO-030-241) Wilderness Study Areas, Hinsdale County, Colorado. CONTENTS Summary 1 Abstract 1 Character...identified resources 9 Methods of evaluation 9 Mining history 9 Appraisal of sites examined 10 Redcloud |  | | Report (issue) | | zinc, tungsten, and copper. In 1896 world-renowned mining engineer Thomas ''T.A." Rickard called the San...San Juans one of Colorado's four great mining regions along with Leadville, Cripple Creek, and Central City...Above: August sunrise on middle Blue Lake, Ouray County Photo Jack Brauer/WideRange Photo LLC, 2010 Facing...(now the location of Silverton, Howardsville, and Eureka). Unfortunately, the rush failed because of the...1874, small mining camps had begun to appear. The towns of Silverton, Howardsville, and Eureka took hold |  | | Report (volume) | | of the Atomic Energy Commission Nevada Proving Grounds Area,^ Nevada GO O «§ 5 .1 525 o o H 'W...OF THE ATOMIC ENERGY COMMISSION NEVADA PROVING GROUNDS AREA, NEVADA By MIKE S. JOHNSON and DONALD E.... HIBBARD ABSTRACT The Nevada proving grounds area in Nye and Clark Counties, Nev., is about 700 square...about 70 miles northwest of Las Vegas in southern Nevada. It consists essentially of two large valleys,...one of Tertiary age have been recognized in the Nevada proving grounds area. The Paleozoic formations |  | Orris, G.J., Bennett, P.C., Theodore, T.G. (1987) A bibliography for the Winnemucca 1 degree by 2 degrees Quadrangle, Nevada, with indexing by county, commodity, mine name, mining district and selected major topics. Open-File Report Vol. 1987 (87-89) US Geological Survey doi:10.3133/ofr8789 | Report (issue) | | 2° quadrangle, Nevada, with indexing by county, commodity, mine name, mining district, and selected major...resources of the Winnemucca 1° x 2° quadrangle area, Nevada, were collected in support of a series of U.S....within the Winnemucca 1° by 2° quadrangle, Nevada: Elko, Eureka, Humboldt, Lander, and Pershing Counties...Table 3 is a listing of references by mine and mining district names. Finally, Table 4 indexes the references...for the five Nevada Counties that occur in the Winnemucca 1° by 2° quadrangle, Nevada. COUNTY REFERENCES |  | | Report (volume) | | ____ Operating conditions and future of copper mining.________________ Mines and prospects _________...sketch map of parts of the Eureka and McDevitt mining districts, Lemhi County, Idaho.__________________...the area covered-,.2. Sketch map of part of Lemhi County, showing the locations of known copper deposits________________...Diagram showing strikes of copper deposits in Lemhi County. 4. Diagram showing strikes of ore deposits other...southern part of the Eureka mining district and the western part of the McDevitt district. They are described |  | | Report (issue) | | Replacement Deposits Part II Gold in the Tintic Mining District, Utah By HALT. MORRIS Gold Deposits in the...Bird Mining Districts, San Juan Mountains, Colorado By FREDERICKS. FISHER Gold in the Alma Mining District...R. SHAWE Precious Metals in the Leadville Mining District, Colorado By TOMMY B. THOMPSON Part I is Chapter...bibliographies. Contents: pt. 1. Bald Mountain gold mining region, northern Black Hills, South Dakota / by...Tintic Mining District, Utah / by Hal T. Morris. Gold in the Sneffels-Telluride and Camp Bird mining districts |  | | Report (issue) | | Powell, United States geological survey Nevada with district Eureka of the Geology | | | title: director...the Geology Arnold Hague | Washington Eureka | district [Vignette] | | Powell, director with...of 4. | | | | government printing | W. Nevada | xvii, (U. S. geological nuney). Monograph...geological survey I Geology of the Eureka Arnold Hague [Vignette] district | | | ? S Washington 4. ... J. | 8 W. Powell, director with an atlus Nevada | | | | by | | government printing [UNITED |  | | Journal (article/letter/editorial) | | O. R¾• Abstract The TungstenQueenmine, Vance County,North Carolina, is a large quartz-huebnerite vein...TungstenQueen deposit,a singlevein in the Hamme district,Vance County,North Carolina,has a geologicsettingand...suggested thatthe veinsof the Hamme understanding district were depositedby hydrothermalfluids which had...the tungstenveins Hamme tungstendistrict,Vance County, North 523 524 T. CASADEVALL AND R. O. RYE...Biotite gneiss g 360 30' i'j•i ii:.•:• I Vance County pluton :':"*:".. .f• Metafelsite --• Greenstone |  | MAGLAMBAYAN, Victor B., ISHIYAMA, Daizo, MIZUTA, Toshio, MATSUBAYA, Osamu, ISHIKAWA, Yohei (2001) Oxygen and Carbon Isotope Study of Calcite and Dolomite in the Disseminated Au-Ag Telluride Bulawan Deposit, Negros Island, Philippines. Resource Geology, 51 (2) 107-116 doi:10.1111/j.1751-3928.2001.tb00085.x | Journal (article/letter/editorial) | | mined jointly by Philex Mining Corporation and Philippine National Bank. The mining rate was initially 2...the bullion ranged from 1:0.6 to 1:1.8 (Philex Mining Corporation, unpublished data). Previous studies...mineralization, and the formation of environment (Philex Mining Corporation, 1992; Manuel and Jadoc, 1992; Maglambayan...phenocrysts. “Heterolithologic breccia” (Philex Mining Corporation, 1992) has been used to describe several...the assemblage calcite-chlorite-quartz-albite-epidote-kaolinite> smectite±anatase±pyrite in andesite |  | | Report (issue) | | Air Force Base Bombing and Gunnery Range, Nye County, Nevada GEOLOGICAL SURVEY PROFESSIONAL Prepared...Air Force Base Bombing and Gunnery Range, Nye County, Nevada By E. B. EKREN, R. E. ANDERSON, C. L. ROGERS...___________________ Antelope Valley Limestone-______________ Eureka Quartzite._________________________ Ely Springs...Devonian._____________________________________ Nevada Formation._________________________ Limestone and...Pahute Mesa___---------Mines and mining. ___________ Antelope Springs district... Trappman Hills-__-____-_ |  | | Report (issue) | | .............. Monzonite porphyry dikes of the Eureka area The Sylvanite composite stock............................ Bedding-plane faults of the Eureka district Interpretation of original conditions along...deposits................ Deposits of the Sylvanite district......................... ' Types of deposits....structural features............ Deposits of the Eureka district .............................. Types of deposits...features............ Zonal relations between the Eureka and Sylvanite districts....................... |  | | Journal (article/letter/editorial) | | associatedwith the two granitic rock series. 1. Epidote skarn is usually found in the depositsassociatedwith...productions have also been considered. mines. Epidote Skarn and PlagioclaseIn Miocenetime, strongacidmagmatismoccurred...include of agesof formation(Shimazaki,1975). epidote-clinozoisite, plagioclase, clinopyroxene, actin-...81 0.12 HOei(Z•5) Yoshioka(2?) 0.08 0.07 ß Epidote skarn An O Plagioclaseclinopyroxene skarn 2,...diagram showing examples of the bulk compositionof epidote skarn and plagioclase-clinopyroxeneskarn. Tie lines |
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Richmond-Eureka mine, Ruby Hill, Eureka Mining District, Eureka County, Nevada, USA