 | | Report (issue) | | metavolcanic rocks of probable Mesozoic age. Cerro el Picacho, Arispe area, centered on lat 30°25'N., long...the Cerro de Oro area (1.3 km northeast of Cerro El Cielo, 1.5 km northeast of Cerro Copete), 29°37.3'N...(Yeso mine on 1:50,000-scale topographic map H12D51) (MartĂn Valencia, oral commun., 1997). El Jaralito...corals, and pelmatozoan detritus. In outcrops near El Trigo (lat 27°31'N., long109°06'W.), Angermann (1904)...Paleozoic, possibly Permian age (King, 1939). In the El Trigo region, Triassic strata have been identified |  | | Report (volume) | | Resources of the ChiricahuaWilderness Area, Cochise County, Arizona By HARALD DREWES, U.S. GEOLOGICAL SURVEY...................................... History of mining..................................................RESOURCES OF THE CHIRICAHUA WILDERNESS AREA, COCHISE COUNTY, ARIZONA By HARALD DREWES, U.S. Geological Survey...attractive. The wilderness is virtually devoid of mining activity. Traces of mineralization were found mainly...east-northeast and southwest corners of the area. A few mining claims have been located at these places, but there |  | | 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 |  | GonzĂĄlez-JimĂ©nez, JosĂ© M., CamprubĂ, Antoni, ColĂĄs, Vanessa, Griffin, William L., Proenza, JoaquĂn A., O'Reilly, Suzanne Y., Centeno-GarcĂa, Elena, GarcĂa-Casco, Antonio, Belousova, Elena, Talavera, Cristina, FarrĂ©-de-Pablo, JĂșlia, Satsukawa, Takako (2017) The recycling of chromitites in ophiolites from southwestern North America. Lithos, 294. 53-72 doi:10.1016/j.lithos.2017.09.020 | Journal (article/letter/editorial) | | subduction, dated at ïŸ 311 Ma. Keywords: Chromitite, zircon, UHP conditions, mantle recycling, Baja California...de San AndrĂ©s, the Central part of the ED Sierra El Placer and along the south coast of the Peninsula...magnetite. At the localities of the Sierra del Tigre, Sierra de Puerto Nuevo and San CristĂłbal chromitite...sequence. This unit is observed in the Sierra del Tigre, Sal-Si-Puedes Canyon and San CristĂłbal, and consists...for the mafic-ultramafic rocks by U-Pb dating on zircon from plagiogranites that intrude peridotites in |  | | 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 |  | | Report (volume) | | vols. 3, 4, 5, nos. 1, 2. American Institute of Mining Engineers: Bulletin, nos. 145-156; Transactions...nos. 1-9. San Francisco, Calif. California State Mining Bureau: Bulletin, nos. 85-88; Preliminary report... 1-6, vol. 34, nos. 1-9. Ottawa, Out. Canadian Mining Institute: Monthly Bulletin, nos. 81-104; Transactions...Transactions, vols. 21, 22. Ottawa, Ont. Canadian Mining Journal, vols. 40, 41. Toronto and Montreal, Canada...Boletin de Miuas, nos. 5, 6. Habana, Cuba. Delaware County Institute of Science: Proceedings, vol. 8, no. |  | | Report (issue) | | Tertiary normal faults and to margin of Turkey Creek caldera suggest a Tertiary age for some deposits...deposits TERTIARY ROCKS ASSOCIATED WITH THE TURKEY CREEK CALDERA Moat deposits and related dikes A sequence...subordinate sedimentary rocks deposited in moat of Turkey Creek caldera. The tuff map units contain block-and-ash...quartz, and Fe-Ti oxides; accessory biotite and zircon present in some samples. Devitrified, except at...ledges and massive cliffs in exhumed moat of Turkey Creek caldera. Maximum thickness approximately 300m Unit |  | Litherland, M., Annells, R. N., Appleton, J. D., BerrangĂ©, 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 (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 âą 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) | | 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) | | 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 |  | | 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 (chapter) | | Guillermo; M: Pampa del MeÌdano; R: Rodeo town; J: JaÌchal-El Fiscal basin; H: Pampa de HualilaÌn; LN: Loma NegraâMatagusanos...NegraâMatagusanos brachianticline; ETF: El Tigre fault; and Pp: Sierras Pampeanas. (b) Oblique (transpressional...beds. A major structure of this sector is the El Tigre fault (ETF in Fig. 2a; BastıÌas et al. 1984; BastıÌas... Mogna Formation Middle andesites and dacites El Corral and Loma de las Tapias formations CuculıÌ...central sector of the El Tigre locality seems to be indicative of proximity to the El Tigre fault (TC sites |  | | 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 |  | Riel, N., Guillot, S., Jaillard, E., Martelat, J.-E., Paquette, J.-L., Schwartz, S., Goncalves, P., Duclaux, G., Thebaud, N., Lanari, P., Janots, E., Yuquilema, J. (2013) Metamorphic and geochronogical study of the Triassic El Oro metamorphic complex, Ecuador: Implications for high-temperature metamorphism in a forearc zone. Lithos, 156. 41-68 doi:10.1016/j.lithos.2012.10.005 | Journal (article/letter/editorial) | | Metamorphic and geochronogical study of the Triassic El Oro metamorphic complex, Ecuador: Implications for...the Andean active margin in southwest Ecuador, the El Oro metamorphic complex exhibits a well exposed tilted...constrain the pressureâtemperature (PâT) evolution of the El Oro metamorphic complex during Triassic times. Our...zone. Migmatites UâThâPb geochronology yielded zircon and monazite ages of 229.3± 2.1 Ma and 224.5± 2...region of the Andean margin of southwest Ecuador, the El Oro metamorphic complex (Fig. 1) exhibits a continental |  | | 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 |  | | 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...shoreline placer Ti deposits 271 Zro 2 grades from zircon in shoreline placer Ti deposits 272 Ti02 grades...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 |  | Izaguirre, Aldo, Iriondo, Alexander, Kunk, Michael J., McAleer, Ryan J., Atkinson, William W., MartĂnez-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 GeodinĂĄmica, Universidad del...production (e.g., La Herradura, San Francisco-Llano, El Chanate, Soledad-Dipolos, and Noche Buena) that,...Tajitos 30° ja Age ~68â64 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 |  | 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) | | 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 | | 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...ALICE GLORY HOLE The Alice glory hole, Clear Creek County, Colorado (by T. A. Hanson & W. B. Craft) 18:185187 |  | | 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: |  | | 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 inÂŹ dexer uses Atchison County Kansas the Terms KanÂŹ sas, Midwest, and United |  | | 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 - âą Vll...Breccia Pipes 87 Pegmatites 88 "Mine Fire" Minerals, United Verde Mine, Jerome Arizona Meteorites PART | | | 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 âMine Fireâ Minerals, United Verde Mine, Jerome Arizona Meteorites 93 PART |
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