 | | Report (issue) | | 14 1. 2. 3. 4. 5. Asbestos ore Lead ore, Balmat mine, N. Y. Chromite-chromium ore, Washington Zinc ore...Survey in accordance with the provisions of the Mining and Minerals Policy Act of 1970 (Public Law 91-631...discovered or not currently profitable to mine. The mining of mineral deposits, once discovered, depends...________________———— Utah __________________________ Marysvale district (Piute and Sevier Counties) Southern Wah Wah Mountains...____________ Nevada ___________________————— Lincoln County _______________——— Clark County __________————————— |  | Gibson, Peter Craig, Noble, Donald C., Benavides, Raúl G., Mayta, Oscar T. (1993) Discovery, Development, and Production of a Blind Ag-Au Bonanza in the Calera Vein, Orcopampa District, Peru. International Geology Review, 35 (9) 780-796 doi:10.1080/00206819309465557 | Journal (article/letter/editorial) | | Blind Ag-Au Bonanza in the Calera Vein, Orcopampa District, Peru a a b Peter Craig Gibson , Donald C....Mackay School of Mines , University of Nevada , Reno, Nevada, 89557 b Companía de Minas Buenaventura...Blind Ag-Au Bonanza in the Calera Vein, Orcopampa District, Peru, International Geology Review, 35:9, 780-796...Blind Ag-Au Bonanza in the Calera Vein, Orcopampa District, Peru 1 P E T E R C R A I G G I B S O N , D O...NOBLE Mackay School of Mines, University of Nevada, Reno, Nevada 89557 R A U L B E N A V I D E S G., A N |  | | Journal (article/letter/editorial) | | is comprised of several economically important mining districts producing copper, zinc, lead, silver...of less than 1 km below the surface. The Huanzala mine (Compañía Minera Santa Luisa S.A.) has produced...descriptions of the geological features of the mining district (Fukahori et al., 1980; Imai et al., 1985;...McKee, 1999) developed. Around the Huanzala mining district, the regional stratigraphy (Fig. 1b) is composed...exposed at the present surface. The Huanzala mining district occupies the eastern limb of one of the synclines |  | | Journal (article/letter/editorial) | | HUANCAVELICA DISTRICT, PERU DONALD C. NOBLE Mackay Schoolof Mines, Universityof Nevada-Reno,Reno,Nevada89557...assemblageoccursmainly as impregnations of the district have been describedby Yates et al. in the quartzite...re presentin surmine, the mostimportantin the district (Fig. 1), is roundingareas.Pyrite and tetrahedriteare...chalcedonicsilica,and clay.Tracesof barite, temptsof bulk mining. marcasite,galena, and sphaleritewere observedin...SANTABARBARA MINE ChaclatoconoOpen Pi• D FIG.1. Mapofa partoftheHuancavelica district,largelygeneralized |  | | Journal (article/letter/editorial) | | degreeof uplift anderoPalo Verde, Carnaval, and San Alberto skarns;the E1 by depthof emplacement, sion, and... apparent Silver Dyke and Quick-Tungdepositsin Nevada, agescan be related to specificgeologiceventsof...metersalongthe inpipesin the Buenavista Cu-Mo-W district,with the trusion-skarncontact.Primary alterationaway...-- hornblende, K = orthoclase, M = muscovite (sericite), Z = zircon.Scale = 1:1,000,000. rhyoliteporphyry...Tertiaryrhyolitevolcanic rockssuggest thattherhy- SanAntonio mine, where mineralization occurswithin oliteporphyrywasemplaced |  | | Report (issue) | | Norte Cty, CA Santa Helena, Antioquia, Colombia Goto Mine, Luzan, P.I. References Wells, F. G. et al 1946...upward from Mo+Cu to Cu, Au to Zn, Buckingham, Nevada USSR deposits References Blake and others, 1979...References Atkinson and Einaudi, 1978 Petersen, 1965 Alberto Nunez, oral commun., 1982 13 Copper skarn 2...Australia El Sapo, Colombia References Ashley, 1980 Alberto Nunez, oral commun., 1982 14 2.8 DEPOSIT TYPE...(Cyprus), York Harbor, (Canada) Turner-Albright, (USA) References 3.1 (continued) Petersen and Zantop |  | | Report (issue) | | SURVEY CIRCULAR 1062 .r • San jose tin~silver mine at Oruro, Bolivia, where high-grade ores are hosted...on Mineral and Energy Resources, held in Reno, Nevada, February 11-14, 1991 U.S. GEOLOGICAL SURVEY CIRCULAR...-Soviet research on mineral deposits in the Noril'sk district is underway. Seventh Annual V.E. McKelvey Forum...mineral resources. Once again, we have selected Reno, Nevada, as the site for the Forum, as the city represents...represents an important center for the United States mining industry. Such an environment should enhance the |  | | Journal (article/letter/editorial) | | Longitudinal fault, one of the largest faults in the district, but the Vent is not. Imbrication by the Longitudinal...thickened the deposit so that it is amenable to openpit mining. Dikes and pyrite-enargite veins pass from the...University of Washington, Seattle, Washington 98195, USA their origin) are older than and, therefore, unlikely...al. (1988). However, only the features of the district and deposit that are germane to the structure...oft-ignored observations of previous authors. Modern mining at Cerro de Pasco, which began in 1906, has not |  | | Journal (article/letter/editorial) | | porphyry copper deposits of South America: AIME Soc. Mining Engineers Trans., v. 255, p. 45-53. McLaughlin...Q., Alberto, 1975, Chronology of late Tertiary volcanism and mineralization, Huachocolpa district, central...McKee, E. H., Arenas, Mario, and BenavidesQ., Alberto, 1972, Cenozoicvol- M. L. S. U.S. GEOLOGICAL SURVEY...central Peru: A MACKAY SCHOOL OF MINES UNIVERSITY OF NEVADA late Pliocene collapse caldera complex with associated...probablyCretacelaterized and erodes readily. The sericite is more ous. The northern limit is indeterminant |  | Simmons, A. T., Tosdal, R. M., Wooden, J. L., Mattos, R., Concha, O., McCracken, S., Beale, T. (2013) Punctuated Magmatism Associated with Porphyry Cu-Mo Formation in the Paleocene to Eocene of Southern Peru. Economic Geology, 108 (4) 625-639 doi:10.2113/econgeo.108.4.625 | Journal (article/letter/editorial) | | Bel, 1985; Mukasa, 1986). 40Ar/39Ar hydrothermal sericite alteration ages are 61.8 ± 0.7 and 62.0 ± 1.1...Santa Rosa (Quang et al., 2003). Hydrothermal sericite alteration at Cuajone has been dated by 40Ar/39Ar...40Ar/39Ar ages of igneous biotite and hydrothermal sericite suggest the porphyry Cu system formed between...Quellaveco, Estrada (1975) reported a K-Ar age on sericite of 56.2 Ma (no uncertainty provided), whereas...whereas a slightly younger 40Ar/39Ar age on sericite of 54.3 ± 2.0 Ma 625 Submitted: October 22, 2011 Accepted: |  | Eyzaguirre, V. R., Montoya, D. E., Silberman, M. L., Noble, D. C. (1975) Age of igneous activity and mineralization, Morococha District, central Peru. Economic Geology, 70 (6) 1123-1125 doi:10.2113/gsecongeo.70.6.1123 | Journal (article/letter/editorial) | | IGNEOUS ACTIVITY AND MINERALIZATION, MOROCOCHA DISTRICT, CENTRAL PERU Introduction and D. E. Montoya...the Morocochadistrict, one southernpart of the district and an unalteredquartz of the classiccopper-producing...hasresulted fromthe recentdiscovery northernpart of the district,as well as a specimenof of the Toro Mochocomplexdisseminated...Analytical Data for Samples from the Morococha District, Central Peru Sample Anticona Diorite Location...monzonite porphyry intrusions of the Morococha district. Acknowledgments The K-Ar ages on the Yantac intrusion |  | | Journal (article/letter/editorial) | | one-half from the southern end. The names of the mine workings (Fig. 2) listed in order from north to...Janeiro, Brazil. 48? 488 PAUL F. KERR AND ALBERTO I. ERICHSEN {'lt-,1'rQ ).i,'.)l;ltg b-\',ry:5...available the facili- 490 PAAL F. RERR AND ALBERTO I. ERICHSEN ties of the government services,is...Manganeseand iron are present in minor amount. Sericite,so common in quartz veins, may have been a prominent..."u".ui feet of clay. 494 PAT]L F, RERR AND ALBERTO I. ERICHSEN relations in the pits where the vein |  | | Journal (article/letter/editorial) | | the diatreme breccia is altered to pyrite-quartz-sericite-pyrite. This body was, in part, replaced by pipelike...the first historic record of production from the district is in 1630 (Bowditch, 1935, and references therein)...Cerro de Pasco Corporation. In the early 1970s, the mine was nationalized and was integrated into the state-owned...S.A., the current owner, took the control of the mine. Mineralization at Cerro de Pasco comprises two...Collahuasi, Rosario vein, Chile3 ore in the district ore in the district 3 Cordilleran ores are not mined 4 Pyrite |  | | Report (issue) | | reserves in the western Serra do Curral by deposit and mine area.______________ 9. Potential iron resources... but a fifth of the population is dependent on mining and related activities. The major crops are corn...Souza Noschese, F&cho do Funil, and Inhotim are mining communities, and the latter three are loading stations...economy that depends upon hydroelectric power, mining, smelting, farming, and railroading. Four principal...Itatina. All-weather secondary roads connect the mining areas with nearby towns and loading stations, and |  | | Journal (article/letter/editorial) | | (D) Ortiz Mine (Cunningham Hill) (D) Castañeda de Llamuco Mine (D) Silverton (Sunnyside Mine?) (D) Huya...Huya (D) New Zealand New Mexico, USA Chile Colorado, USA China Vein-type Breccia? Breccia? Polymetallic...Mexico Polymetallic vein? Ag (Pb-Zn-Au) Kovárna Mine (Obřı́ dul, Riesengrund) (D) Moose River (D) Czechoslovakia...Jardine (D) Delnite (D) Morro Velho (D) Montana, USA ON, Canada Brazil Turbidite-hosted? Greenstone-hosted...Greenstone-hosted Au (As-W) Au-Ag Au Sigma Au Mine(D) Mackenzie Mine (D) QC, Canada ON, Canada Greenstone-hosted |  | | Report (volume) | | application of mineral deposit models to classic mining areas in Bolivia. The data that result from these...United States. Bolivia has a long and important mining history, and mineral resources will probably continue...development of future exploration and investment of the mining industry in nontraditional areas of the Andean...being the best example. After hundreds of years of mining, these deposits are still productive and the Cordillera...effort to promote the development of the Bolivian mining sector, TDP provided a grant of $2 million to the |  | | Journal (article/letter/editorial) | | SHINKOLOBWE MINE, Host rock 1. Formational Name Mineral association I. Major Metallic Minerals Mine series...uranium.Because of the longmininghistoryof the district, theJoachimsthal areahasbeendescribed in greatdetailin...PITCHBLENDE VEINS. TABLE 81 III. JOHANNGEORGENSTADT DISTRICT, CZECHOSLOVAKIA. Hostrock 1. Formational Mineral...northwestand east- White dolo- Phyllites, containing sericite, Bismuth Zinc pitchblende. northeast. Dip 600-80...groupnear St. Stephen,Cornwall,and the Trenwith mine at St. Ives, Cornwall--haveyieldedsignificantquantitiesof |  | | Journal (article/letter/editorial) | | porphyrybody Santo,the volcanicdome shownin Figure 2A. Mine hostedby sedimentary rocksof Silurianage(Ahlfeld...caniclastic sediments andiscutby brecciapipes;mine The Carangas district,about18 km northeast of workingsin all...individual miners have since reworked old waste dumpsand mine fill to extract and handconcentrate CERRO silver...Rico de Potosi. Todos Santos district Mines of the Todos Santos district, also worked may be part of...daciteandOrdovician alunite occursin the oxide ores.Current mining opshale,which we interpret to be an explosionbreccia |  | | Book | | Spanish-English, English-Spanish glossary of gem, mineral and mining terms. BY PAUL WILLARD JOHNSON Price $2.00 r...El Antimonio District Cananea District ...... Arizpe District ........... Nacozari District ...... Moctezuma...Moctezuma District ... Hermosillo District ... Alamos District ........ San Bernardo Area Alistos District...SECTION 2 — Highway 45 Sabinal District ............... Los Lamentos District.... Placer de Guadalupe Puerto...Aire District Chihuahua .......................... Santa Eulalia District....... El Potosi Mine..... |  | | Report (volume) | | Railroad Valley-Grant Range region, eastcentral Nevada, from interpretation of potential-field anomalies...geology and mineral deposits of the Berenguela district, northwestern Bolivia By Alan R. Wallace, Richard...and silver in acid-sulfate alteration and quartz-sericite-pyrite stockworks, La Espanola prospect, northwestern...inclusions in vein quartz from Battle Mountain, Nevada By Edwin H. McKee, James E. Conrad, Brent D. Turrin...White River National Forest and the Dillon Ranger District of the Arapaho National Forest, Colorado By Margo |  | | Journal (article/letter/editorial) | | adjacentquartz monzoniteand volcanicagglomerateto sericite-pyrite-quartz. Upward and outward zoning relative...monoclinicpyrrhotite on the deepest level of the mine below the bottom of Pb-Zn ore. On higher levels...associated with sericitic and advanced argillic district lies east of the continental divide and west alteration...Group is absent or unrecognized in the underground mine workings, where Triassic-Jurassic Pucar,5limestone...breccia. A. Section through Eastern CN-A and San Alberto pyrrhotite pipes. B. SectionthroughwesternCN-A |  | | Journal (issue) | | phosphate minerals from Mauldin Mountain, Montgomery County, A rkansas.......................................unusual quartz pipe deposits o f the Kingsgate mining area were among Australia's leading producers o...bismuth in the early 1900s. In the course o f active mining some o f the world's finest specimens o f molybdenite...micromount material. T INTRODUCTION The Kingsgate mining area lies in rugged, heavily wooded coun try near...1800s, one of the richest and most important tin mining districts in the world. The early prospectors, |  | | Journal (article/letter/editorial) | | California-Vetas mining district. Coeval volcanic rocks are not recognized in the district and volumetrically...system and characterized by phyllic alteration (sericite-illite, quartz, pyrite) associated with quartz-pyrite...geochronology on hydrothermal muscovite (i.e., sericite) to ~3.4 Ma. The epithermal phase comprises stages...Epithermal mineralization in the California-Vetas mining district at 7.4° N and 70.9 W in the eastern Cordillera...hydrothermal sericite from the Angostura deposit within the California-Vetas mining district and a spatial |  | | Journal (article/letter/editorial) | | largely passively eraplacedand are pervasively sericite altered. Locally sericitic alteration grades outward...featurescharacteristic of porphyry ore vertical on the lower mine levels, where it measures deposits, asdefined by...breccia from the Llallagua deposit. Fragments of sericite altered, quartz latite porphyry containing disseminated...sedimentary rock in all to an aggregateof quartz, sericite,and tourmaline; proportions(Fig. 2). The matrix...center of mining activity since 1545 when it was first worked for silver by the Spaniards. Tin mining did |  | 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) | | Diaz, Hermann Duque-Caro, Rodrigo Vargas Higuera, Alberto Nunez Tello, Jairo Alvarez Agudelo, Clemente Ropain...complex mineralogy (such as the California-Vetas district) would be useful, not only for exploration in...in such areas may be appropriate. 12° SIERRA NEVADA DE SANTA MARTA Figure 1. Geologic provinces of...vertical uplift is post-middle Miocene. The Sierra Nevada de Santa Marta, a triangular-shaped fault-bounded...Juan-Atrato Basin), the Serrania de Perija and Sierra Nevada de Santa Marta (Cesar Basin), and along the Caribbean |
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