 | | Journal (issue) | | Number 67 BRITISH GEOLOGICAL SURVEY Number 67 The El Oro metamorphic complex, Ecuador: geology and economic...rejerence Aspen,JA, Bonilla, W, and Duque, P. 1995. The El Oro metamorphic complex, Ecuador: geology and economic...Sub-province I 6 Tahuin semi-pelitic division 6 El Tigre unit 6 La Victoria unit 6 Depositional age of...La Bocana unit 10 La Florida unit 13 Marcabeli and El Prado plutons 13 Age of La Bocana unit and Marcabelf...Palenque melange division 32 Rio Panupali unit 32 El Toro unit and unnamed serpentinites 36 Strncture |  | | Report (issue) | | Hu1nan aspect 3 Access 3 Previous geological work 3 Mining history 4 Project operations 5 Reports and maps...and skarns 33 Alao terrane 36 Alao-Paute unit 36 El Pan unit 38 Maguazo unit 39 Guamote terrane • 41...Seven Geology of the El Oro metamorphic belt 64 Palaeozoic and Triassic rocks 64 El Tigre unit 64 La Victoria...Jurassic-Lower Cretaceous rocks 69 Palenque unit 69 El Oro ophiolitic co1nplex 69 Tecconometarnorphic events...event 71 Palenque event 73 Structural lirnits of the El Oro belt 74 Other meta1norphic occurrences 74 Eight |  | | Report (volume) | | Bulletin, vol. 41. New York. American Institute of Mining Engineers: Bulletin, nos. 25-36; Transactions,...series, vols. 27, 28. New Haven, Conn. American Mining Congress: Papers and Addresses, llth Annual Session;... vol. 2, no. 2. Oakland, Cal. California State Mining Bureau: Bulletin, nos. 54-56. San Francisco, Cal...Transactions, vol. 8, pt. 3. Toronto, Ont. Canadian Mining Journal, vol. 30. Toronto and Montreal, Canada...vol. 12, pp. 95-222. Davenport, Iowa. . Delaware County Institute of Science: Proceedings, vol. 4, nos |  | Litherland, M., Annells, R. N., Appleton, J. D., Berrangé, J. P., Bloomfield, K., Burton, C. C. J., Darbyshire, D. P. F., Fletcher, C. J. N., Hawkins, M. P., Klinck, B. A., Llanos, A., Mitchell, W. I., O'Connor, E. A., Pitfield, P. E. J., Power, G., Webb, B. C. (1986) The geology and mineral resources of the Bolivian Precambrian shield. Overseas Memoir 9. British Geological Survey | Report (volume) | | and post-orogenic rock units 71 The Rincon del Tigre Igneous Complex 71 Granitoids 72 Mi gmacites 73...Santiago groups 92 The El Prado Formation 92 Mesozoic 93 92 84 IV The El Port6n Group 93 The Velasco...for the Orobayaya Granite 43 Rb-Sr plot for the El Tigre Alkaline Complex 44 Rb-Sr plot for the Cerro Grande...Huanchaca 49 Possible sectional configuration of the El Tigre Alkaline Complex 50 Cartoon showing possible relations...Piedra Granite 64 38 Rb-Sr plot for the Rincon de! Tigre Igneous Complex 65 39 Regional distribution and |  | | Report (volume) | | vols. 9, 10. Tulsa, Okla. American Institute of Mining and Metallurgical Engineers: Transactions, vols...11, 12. San Francisco, Calif. California State Mining Bureau: Bulletin, nos. 79, 94-97. San Francisco...39, 40. Ottawa, Ontario. Canadian Institute of Mining and Metallurgy: Transactions, vols. 27, 28; Bulletin...Bulletin, nos. 153-176. Montreal, Quebec. Canadian Mining Journal, vols. 46, 47. Toronto and Montreal, Canada... nos. 1-2. Chapel) Hill, N. C. Engineering and Mining Journal-Press, vols. 119-122. New York. Engineers |  | | Report (issue) | | Gavilanes Tungsten District El Antimonio District Magdalena District Cananea District Preliminary Deposit-Type...or to a group of closely-spaced deposits. Two district records have been included (MX00018 and MX02161)...or names of individual orebodies. DISTRICT/AREA Informal district name used in the literature. Names...economic interest. MINOR: Coproducts or byproducts of mining. POTEN: Commodities that have not been exploited...geologic inferences only ("inferred ore"). The mining industry terms "proven", "probable", and "possible" |  | | Book | | ARIZONA-V] 265-352 257-320 353-400 321-384 TOURMALINE ] 327--438 439-508 225-288 289-352 353-416...On a spectacular find of crocoite in the Adelaide mine, Dundas, Tasmania (by A. H. Chapman) 3:111-113 ADOLFSSON...Iaria from the Howard-Montgomery quarry, Howard County, Maryland (by J. S. White) 25:53-54 AFGHANISTAN...AJO Famous mineral localities: the New Cornelia mine, Ajo, Arizona (by W. J. Thomas & R. B. Gibbs) 14:283-298...Iron-manganese phosphates of the Williams pegmatites, Coosa County, Alabama (by P. B. Leavens & T. A. Simpson) 6:66-73 |  | | Report (volume) | | Canada and for carbonate-hosted zinc in east Tennessee. As the older ideas have been replaced, additional...rock types 133 Cross section through the Kalavos district Cyprus showing relationship of massive sulfide...based on considerations that extend far beyond the mine itself, in some instances relating to the overall...subject, as in a scale model of the workings of a mine, to a unifying concept that explains or describes...significant tasks. GRADE-TONNAGE MODELS Estimated pre-mining tonnages and grades from over 3,900 well-explored |  | | Book (edition) | | McDonald Co\·er photo: \\ 7 ulfenite, Rowley Mine, Maricopa County, 4 cm high specimen, Evan and Melissa Jones...used mining districts as part of the locality description. These political and geographic district names...with a more descriptive term, metallic mineral district. This term shows the geochemical and mineralogical...reader to learn more about the geology of the district and to possibly predict the minerals that could...districts. Where possible, the metallic mineral district for each mineral locality is given for the mineral |  | Hodges, C.A., Cox, D.P., Singer, D.A., Case, J.E., Berger, B.R., Albers, J.P. (1984) U.S. Geological Survey-INGEOMINAS mineral resource assessment of Colombia. Open-File Report Vol. 1984 (84-345) US Geological Survey doi:10.3133/ofr84345 | Report (issue) | | complex mineralogy (such as the California-Vetas district) would be useful, not only for exploration in...the Eastern Cordillera at the California-Vetas District (Domain 23) (Sillitoe and others, 1982). Undiscovered...each of which contains minor copper deposits. The El Rincon deposit, in undivided Mesozoic red beds, consists...successful in exploration of the Viburnum Zn-Pb district of southeast Missouri, U.S.A. (Pratt, 1981). Electromagnetic...to nearby alkaline dikes that occur in the Muzo district. High salinity fluid inclusions suggest temperatures |  | | Report (issue) | | Gold Mines Ltd........................ 186 El Limon mine .................................. 189 Small... 194 La Viborita mine............................... 199 Anori placer district......................in Zone II............... 206 Future of gold mining in Zone II.................... 206 Copper, lead............................................. 211 El Jordan.................................................................. 217 Placer andalusite at El Bagre.................... 217 Exploitability.. |  | | Report (volume) | | 4-Nuria 11 Domain 5-Cerro San Cristobal 11 Domain 6-El Callao Formation 11 Domain ?-Greenstone-belt rocks...Map showing geographic and geologic features and mining districts, NB-20-4 quadrangle 2 Stratigraphic chart...lode deposit at the Vuelvan Caras-Purgatorio gold district, which may be more representative of a gold-rich...within the quadrangle, as evidenced by small-scale mining activity. INTRODUCTION The U.S. Geological Survey...of Bolfvar State. The town of Tumeremo, the gold-mining districts of Botanamo and Vuelvan Caras-Purgatorio |  | | Book (edition) | | Wu!fenite. Red Cloud mine, Si/district, Trigo Mountains, La Paz County, Arizona. Smithsonian Institution...and Second Editions PART 2 HISTORY OF ARIZONA MINING AND MINERALOGY The Prehistoric Period 20 Arizona...Deposits 63 The Bisbee District, Cochise County 64 The Tombstone District, Cochise County 70 The Mammoth-St...Mammoth-St. Anthony Mine, Tiger, Pinal County 78 Uranium and Vanadium Deposits 80 Monument Valley 81 - • Vll...Breccia Pipes 87 Pegmatites 88 "Mine Fire" Minerals, United Verde Mine, Jerome Arizona Meteorites PART |  | Izaguirre, Aldo, Iriondo, Alexander, Kunk, Michael J., McAleer, Ryan J., Atkinson, William W., Martínez-Torres, Luis M. (2017) Tectonic Framework for Late Cretaceous to Eocene Quartz-Gold Vein Mineralization from the Caborca Orogenic Gold Belt in Northwestern Mexico*. Economic Geology, 112 (6) 1509-1529 doi:10.5382/econgeo.2017.4519 | Journal (article/letter/editorial) | | 20192, USA of Geological Sciences, University of Colorado at Boulder, Boulder 80309, Colorado, USA of Geology...Colorado School of Mines, Golden 80401, Colorado, USA 6 Departamento de Geodinámica, Universidad del...production (e.g., La Herradura, San Francisco-Llano, El Chanate, Soledad-Dipolos, and Noche Buena) that,...Tajitos 30° ja Age ~68–64 Ma Hillsboro lif Ca El Boludo San Manuel New Mexico Red Mountain orn...San Judas Cumobabi ia La Colorada Tres Piedras El Arco a Piedras Verdes o f Batopilas C o La |  | | Report (volume) | | 4, 5, 8; Museum Paper, nos. 5, 6; County Report, no. 1 (Clay County). Montgomery, Ala. Alberta, Scientific...vols. 3-12. Tulsa, Okla. American Institute of Mining Engineers: Bulletin, nos. 145-156; Technical Publication...1-157; Transactions, vols. 60-76. New York. See also Mining and Metallurgy. American Journal of Science, 4th...vols. 9-17. San Francisco, Calif. California State Mining Bureau: Bulletins 79, 85-101. San Francisco, Calif...vols. 33-42. Ottawa, Ont Canadian Institute of Mining and Metallurgy: Transactions, vols. 23-30; Monthly | | | Book (edition) | | Wulfenite. Red Cloud mine, Silver district, Trigo Mountains, La Paz County, Arizona. Smithsonian Institution...and Second Editions PART 2 HISTORY OF ARIZONA MINING The Prehistoric Period 20 Arizona Under Spanish...Deposits The Bisbee District, Cochise County 64 70 The Tombstone District, Cochise County The Mammoth-St.... Anthony Mine, Tiger, Pinal County Uranium and Vanadium Deposits 80 Monument Valley 81 63 78 il S:...Breccia Pipes 87 Pegmatites 88 “Mine Fire” Minerals, United Verde Mine, Jerome Arizona Meteorites 93 PART |  | | Report (volume) | | Horn Mountains Wilderness Study Area, Maricopa County, Arizona OCT 77 U.S. GEOLOGICAL SURVEY BULLETIN...Horn Mountains Wilderness Study Area, Maricopa County, Arizona By FLOYD GRAY, R.J. MILLER, J.R. HASSEMER...WEST-CENTRAL ARIZONA AND PART OF SAN BERNARDINO COUNTY, CALIFORNIA DEPARTMENT OF THE INTERIOR DONALD...Horn Mountains Wilderness Study Area, Maricopa County, Arizona. U.S. Geological Survey Bulletin 1701-A...Mountains Wilderness Study Area (AZ-020-099), Maricopa County, Arizona. CONTENTS Summary Al Abstract 1 Character |  | | Journal (issue) | | ....................... 2 A short history of mining in New Mexico ...................................DeMouthe Famous mineral localities: The Magdalena district, Kelly, New Mexico .................................. 13 by R. B. Gibbs The Stephenson-Bennett mine ..................................................Hammond Famous mineral localities: The Hansonberg district, Bingham, New Mexico ...........................Foord Fluorite from the Pine Canyon deposit, Grant County, New Mexico .................................. |  | | Report (volume) | | anonymous papers, placed at the end of Part I Co. county cos. · counties CORPORATE AUTHORS. Am G American...Miners' Association Cal St :M Bur California State Mining Bureau Can G S Canada, Geological Survey Can :M...Inst Smithsonian Institution Tenn Agr Exp Sta. Tennessee Agricultural Experiment Station U P R Co Union...Adams (F D), 18 Federal Government, relation to the mining industry: Hayes, 06 Fossil insects: Cockerell,...to geology: Davis ( W M), 12a Geologic bases of mining law: De Kalb, 10 Geologic basis for artesian prediction: |  | | Report (issue) | | ARIZONA LODE GOLD MINES AND GOLD MINING by Eldred D. Wilson, J. B. Cunningham, and G. M. Butler Bulletin...Arizona Tucson ARIZONA LODE GOLD MINES AND GOLD MINING by Eldred D. Wilson, J. B. Cunningham, and G. M...Mines Bulletin No. 137, ARIZONA LODE GOLD MINES AND MINING, was originally issued in 1934 in response to the...and, in view of the restrictions placed on gold mining during the war, it was not considered necessary...which deals with the laws and regulations governing mining, however, have been deleted, inasmuch as many of |  | | Conference Proceedings (Volume) | | copper mine in the very north of Sweden. Mining operations started in 1968 and the current mining depth...the Bathtub intrusion (Duluth Complex, Minnesota, USA) .. ...............................................Kawishiwi intrusion, Duluth Complex, Minnesota, USA . . ...............................................A. Hronsky The boron isotope composition of tourmaline from the Val-d’Or orogenic gold deposits, Québec...evolution of the world class Siguiri orogenic gold district (Guinea, West Africa) ....................... |  | | Book (edition) | | the total of 4,284 new Terms were United States county and city Terms. Counties and Cities in the United...States Earlier editions had Terms such as Washington County and Portland for counties and cities of the United...for example: Washington County Arkansas and Portland Maine. Each new county Term can now autopost its...to counties was a major task. The scope of U.S. county and city Terms can now be clear even when they...For example, whenever an in¬ dexer uses Atchison County Kansas the Terms Kan¬ sas, Midwest, and United |  | | Report (issue) | | en el modelaje de yacimientos minerales. Los colegos del Geological Survey de Canada preceden el presente...canadiense. En la industria minera es bien conocido el axioma que dice que cualquiera escusa sufice para...carbonatada, ubicados en la parte oriental de Tennessee (EUA), basados en los controles estructurales...han descubierto mas yacimientos minerales. Aunque el concepto de modelos ha sido utilizado por muchos...Mississiippi Valley no se puede haber originado de uno o el otro los procesos singeneticos o de las aguas superficiales |  | | Journal (volume) | | A. Logan, District Mining Engineer C. Jenkins, Chief Geologist McK. Laizure, District W. Burling...Francisco - - Mining Engineer District Sampson, Assistant Mining Engineer District Engineer Chas...Chas. V. Averill, District Mining Engineer Frank Sanborn, .... .... - - - Statistician and Curator...Junior Mining Engineer (Librarian) - San Francisco TABLE OF CONTENTS REPORTS OF DISTRICT MINING ENGINEERS...Redding Field District 1 Sacramento Field District 1 San Francisco Field 24 District Los Angeles |  | Carrillo-Rosúa, J., Morales-Ruano, S., Morata, D., Boyce, A. J., Belmar, M., Fallick, A. E., Fenoll Hach-Alí, P. (2008) Mineralogy and geochemistry of El Dorado epithermal gold deposit, El Sauce district, central-northern Chile. Mineralogy and Petrology, 92 (3) 341-360 doi:10.1007/s00710-007-0203-7 | Journal (article/letter/editorial) | | Mineralogy and geochemistry of El Dorado epithermal gold deposit, El Sauce district, central-northern Chile...Springer-Verlag 2007 Editorial handling: B. deVivo Summary The El Dorado Au-Cu deposit is located in an extensive intra-caldera...intermediate-sulfidation model is proposed for the formation of the El Dorado deposit. Introduction Epithermal deposits...Detailed geological map of the El Sauce District and location of the El Dorado goldbearing epithermal...Emparan and Pineda, 1999) J. Carrillo-Rosua et al.: El Dorado epithermal gold deposit 343 crop out in |
|
