 | 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) | | Formation in the Paleocene to Eocene of Southern Peru* ADAM T. SIMMONS,1,** RICHARD M. TOSDAL,1,â JOSEPH...California 94305 Peru Copper Corporation, Casilla 303, Toquepala, Peru 4 Southern Peru Copper Corporation...Cuajone, Peru 5 AngloAmerican Exploration, Lima, Peru Abstract The Paleocene to Eocene southern Peru porphyry...porphyry Cu-Mo deposits at Cuajone, Quellaveco, and Toquepala. Ten new zircon U-Pb Sensitive High Resolution...MicroprobeReverse Geometry (SHRIMP-RG) ages for Cuajone and Toquepala, together with published ages for Quellaveco, |  | | Journal (article/letter/editorial) | | variablebut persistent andgenerallyminoramounts of anhydrite. Each of theseassemblages will be morefully described...exceedsthe total of with or withoutcarbonate, anhydrite,and apatite. chloriteand epidotereplacingmafic...biotite-K-feldspar alteration assemblage with quartz, sericite,anhydrite,pyrite,chalcopyrite, molybdenite, and tracesof...A ',âą" veinlet of mosaic quartz, K-feldspar, anhydrite, and biotite in potassicalteration assemblage...(a) Kfeldspar (stippled, lower left corner) and anhydrite (vertically twinned) in veinlet. The white stippledtablet |  | | Journal (article/letter/editorial) | | of the orebody and its environs. Bedrocknear the mine consistsmostly of extensivevolcanic flows and i...e. The most prominent structural feature in the mine area is the Braden Pipeâąa circular, downward-tapering...porphyry-type deposits. INTRODUCTION THE E1 Teniente Mine of the Braden Copper Company is on the western flank...three-yearperiod, surface geologyin the vicinity of the mine was mappedon a scaleof 1:2,500, accessibleundergroundworkingswere...Reconnaissance traversesand aerial flights over the mine area helped to establishthe regionalsetting. Topographic |  | | Report (issue) | | biotite, muscovite (sericite), magnetite, chlorite, anhydrite, and epidote. Other commonly occurring gangue...K-feldspar, biotite, muscovite (sericite), albite, anhydrite, chlorite, calcite, epidote, and kaolinite. In...albite-oligoclase, and sericite (compare Beane, 1982). Anhydrite is common, but its abundance varies greatly between...copper-bearing mineral assemblages at the Lakeshore mine in Arizona, as follows: chalcocite zone, brochantite...solutions (Hartley and Rice, 2005). At the Lakeshore mine in Arizona, Cook (1988) found chrysocolla mineralization |  | | Journal (article/letter/editorial) | | 6. Anhydrite is readily dissolvedand removedby acid meteoric waters. In deposits where anhydrite is an...mixing of the fluidswith coolmeteoricwater,or due anhydrite),phyllic (quartz, sericite,pyrite), argillic hydrothermal...BRECCIA PIPE I Diamond drill hole. DACITEPORPHYRY Mine workings. QUARTZDIORITE Location of sections ...collected on a 40meter interval along all of the mine workings and diamond drill holes shown in this figure...volcanicsequence(Table 2), the intrusive rocks anddioritesat Toquepala,Peru (Richardand Court- showonly a slightdecrease |  | | Report (issue) | | ........................................... P20 Mine Waste Characteristics........................................................................ P25 Mine Closure...................................................... P11 Pie chart showing world rhenium mine production in 2012, by country and percent of world...substitute for molybdenum in molybdenite. Annual world mine production of rhenium is about 50 metric tons. Nearly...Chile account for about 55 percent of the worldâs mine production of rhenium; rhenium is also recovered |  | | Journal (article/letter/editorial) | | 150 X 150 >600 Angularto sub- Absent rounded Peru San Pedro de 10 to >50% rounded Granodiorite...Aiken, 1982) and Toquepala, exhibit a greater variety of texturesthan isolated Peru (ZwengandClark, 1984)...Chalcopyrite,pyrite, molybdenite Quartz, K-feldspar, anhydrite,calcite Premineral High-gradeore, especiallyon...chalcopyrite,tetrahedrite Quartz, biotite, Kfeldspar,anhydrite, apatite, siderite or quartz, tourmaline Mo ore...sericite, breccias consti- Warnaars lybdenite anhydrite tute hypogene (1085) et al. ore Cassiterite |  | | Book | | Potteriics, Chile . 4 Âą Section Through Arequipa, Peru 5 Âą Section Through Potrerillos, Chile . ; 6...Rego Chile : 7 Âą Michiquillay Regional Geology (Peru) . 8 © Structure at Chuquicamata, Chile . 9 Âą Surface...Morococha, Peru, including Toro Mocho Area . 13 © Structural Outline of Toquepala, Peru . â 14 Âą...Âą Detailed Surface Geologic Map of Toquepala . 15 16 17 18 19 Âą © Âą Âą Âą Index Map (Appalachian Orogen)...Plutonic Belt, ies 27 @ Geology of the Kobuk-Koyukuk Province (Alaska). 28 © Interior Belt (Alaska). 3 ; , |  | | Journal (article/letter/editorial) | | pit; 200 Kt Mo @ 0.012%; 10 Mt Cu @ (0.3â0.6%) Mine on standby; 52 Kt Mo @ 0.015%; 2.3 Mt Cu @ 0.67%...@ 0.04â0.20%, (average 0.1%) Active underground mine; ~50â60 Kt Mo @ 0.1â0.5%; 50 Kt Cu @ 0.1â0.2% Lebedev...quartzâcalcite. At lower levels, the rocks are rich in anhydrite, and, to a lesser extent, also barite and celestine...Deeper levels of the deposit are enriched in anhydrite. The Cu content in primary ores is 0.3 to 0.6%;...open pits (Zhireken, Sora and Erdenetuin-Obo) and mine benches (Shakhtama). These 22 samples are monomineralic |  | | Journal (article/letter/editorial) | | have been depletedno more than 50 percentin the Peru to delineateindividual mineral deposits:Inst. Mining..., 1968, Potassium-Argondates from Toquepala and Michiquillay, Peru: Summary and Conclusions ECON. GEOâą...rleaching of the La Granjaporphyrycopperdeposit,Peru,in Rose,A. W., and Gundlach, H., ed., GeochemicalExploration...age, is locatedwithin the Grenville structural province of the Precambrian CanadianShield.Specificallythe...intrusiveevents.Brown (p. 14) alsoclearly rec- the Grenville province(Table 1) indicatesa strong ognizedthat a "cla |  | | Journal (article/letter/editorial) | | 267-272. THE PORPHYRY COPPER DEPOSIT AT LA GRANJA, PERU MICHAEL O. SCHWARTZ Bundesanstalt fiir Geowissenschaften...of a hill of the Serviciode Geologiay Minerla of Peru in coop- quartz-richrocks,which reachesa heightof...the sericite-clayzone. clinozoisite,calcite, anhydrite, clay minerals,and Advancedargillicalteration...SelectedMinor Elementsin AlteredIgneousRocks,La Granja,Peru Surfaceexposures Propyliticalteration Biotite...have been depletedno more than 50 percentin the Peru to delineateindividual mineral deposits:Inst. Mining |  | | Journal (article/letter/editorial) | | Guinaoang (Mankayan dist.) Reko Diq Cotabambas Toquepala & Cuajone Los Pelambres Los BroncesRĂo Blanco...(Sillitoe, 2005, and references therein). 72° 68° PERU 18° ARICA BOLIVIA Collahuasi Chuquicamata El...northern Chile-southern Peru, southwestern North America) or Au (northern Peru; Sillitoe, 2008). Notwithstanding...the latest Cretaceous to Paleocene (Laramide) province of southwestern North America, middle Eocene to...m.y. at Cerro de Pasco and Colquijirca, central Peru (BendezĂș et al., 2008; Baumgartner et al., 2009) |  | | Journal (article/letter/editorial) | | batholith in Nevada, and associated with the Yerington mine and the AnnMason deposit, provide a basis of comparison...Laramide, mid-Mesozoic) Limit of Basin and Range Province copper deposits post-Laramide cover Laramide...America, showing the limit of the Basin and Range province, the schematic representation of domains that... 1984; Dilles et al., 2000). Both the Yerington mine and Ann-Mason deposits are exposed continuously...inferred to be the source of both the Yerington mine system (Fig. 2A) and the Ann-Mason system (Fig. |  | | Journal (article/letter/editorial) | | variableamountsof quartz, tourmaline,specularitc,anhydrite, pyrite, chalcopyrite,bornitc,molybdenite,sericite...youngestasGhost,Central, Western,Infiernillo,Anhydrite,FineGray,andDonoso.The brecciacomplexhassharpcontacts... at an averagegradeof about 1.2 percent Cu. The mine is about 800 m east âą "n/I/oX Sâąn EnrlqueâąBx-...severalflotationconcentrators was installed near the mine site. ?âą 71 70 32 CompafiiaMineraDisputadadelasCondesS...neck,or diatreme,at La Copa,northof the Rio Blanco mine,probablyremoveda significantpart of the center of |  | | Journal (article/letter/editorial) | | GEOLOGY AND MAJOR ORE DEPOSITS OF CENTRAL ULRICH PERU PETERSEN CONTENTS PAGE Abstract ..............recentinitiation of productionfrom Marcona and Toquepala,the main sourceof metalswas Central Peril. Mineral...complexenterprise,includingthe Goyllarisquizga coal mine, concentrating, smelting,and refiningfacilitiesand...observations and ideas. MAJOR ORE DEPOSITS OF CENTRAL PERU 409 General summariesare presentedby McLaughlin...ĂO0âąA BASILIA YAURIOOCHA LOCATION CENTRAL 50 MAP PERU 0 50 âąILOM[T[RS Ă Fro. 1. Locationmap. GASTROVlRREYNA |  | Perello, J., Carlotto, V., Zarate, A., Ramos, P., Posso, H., Neyra, C., Caballero, A., Fuster, N., Muhr, R. (2003) Porphyry-Style Alteration and Mineralization of the Middle Eocene to Early Oligocene Andahuaylas-Yauri Belt, Cuzco Region, Peru. Economic Geology, 98 (8) 1575-1605 doi:10.2113/gsecongeo.98.8.1575 | Journal (article/letter/editorial) | | Oligocene Andahuaylas-Yauri Belt, Cuzco Region, Peru JOSĂ PERELLĂ,â Antofagasta Minerals S.A. Ahumada...belt of southeastern Peru is rapidly emerging as an important porphyry copper province. Field work by the...deflection. Similarly, evidence from southeastern Peru suggests that the Andahuaylas-Yauri belt may be...the process of subduction flattening in southern Peru also may have taken place in northern Chile between...an area of approximately 25,000 km2 in southern Peru and extends for about 300 km between the localities |  | | Journal (article/letter/editorial) | | waters from the supergene zone in the La Escondida mine (Alpers and Whittemore 1990) compared to low salinity...have given rise to more homogeneous values. Before mine development, soil samples were collected by Minera...et al. (2005) collected salt samples (gypsum + anhydrite + halite), which were dissolved in aqua regia...copper-bearing smectites from the Radomiro Tomic mine, Chile: insoluble mineral occurrences. Econ Geol...mineralization of the Mantos Blancos district, Antofagasta Province, Chile. PhD Thesis, California University Berkley |  | | Journal (article/letter/editorial) | | table Elevation at top of Ca sulfates(gypsum,anhydrite) Leachingefficiency:percent removal of original...at La Escondida,Chile tectonic phasedocumentedin Peru, central Chile, La Escondidais a large, relatively...as mentioned above. The hydration of hypogene anhydrite to gypsumoccursat an elevationgenerallyat or below...serieite, with minor K-feldspar, gypsum,calcite, anhydrite, and little to no flux. Under certain conditions...constant and we have postulatedthat this ratio has Toquepala,Peru (Richard and Courtright, 1958; Anderson,1982) |  | | Book (volume) | | existence o f a new unconformity-vein style uranium province in the Proterozoic of the Great Sandy Desert....the largest deposits in any established porphyry province. For a discussion of the accepted terminology...âSouth-westâïŒ and in northern Chile and southern PeruïŒand were Cu-Mo orebodies (Gilmour, et. a i , 1995)...in this publication) and in Chile, Argentina and Peru in South America (see Camus; Stem and Skewes; Brown;...E.J., 1982 â The segmented coastal batholith of Peru: its relatio n sh ip to volcanicity and metallogenesis: |  | | Journal (article/letter/editorial) | | the cemented breccias and comprises sericite-anhydrite (sericitic), grandite (calcic), and chlorite-...Abbreviations: act = actinolite, alb = albite, anh = anhydrite, ank = ankerite, ap = apatite, bio = biotite,...nonexplosive Abbreviations: alb = albite, anh = anhydrite, bn = bornite, chl = chlorite, cpy = chalcopyrite...(Byrne et al., 2010). A phlogopite ± K-feldspar ± anhydrite ± magnetite ± diopside ± Cu-Fe sulfide cemented...minerals. Euhedral K-feldspar ± phlogopite ± anhydrite ± rare quartz crystals 921 922 BYRNE AND TOSDAL |  | | Journal (article/letter/editorial) | | an evolvingsupergenesystem. rositiccappingat Toquepala,Peru. Multiple stagesof leachingandenrichmentha...pyrite oxidation, such as acid sulfate soilsand acid mine drainages(van Breemen, 1973; Nordstrom et al.,...AlpersandBrimhall, hillsB andC), veinsof potassium feldspar,anhydrite, 1988). quartz, andbiotite are preservedlocallybeneaththe... of a digenite(-anilite)zone may be useful for mine planningand grade control during mining, because...limonite mineralspre- nationby hazardouswastesand acid mine drainage servedin the leachedcappingzone at La Escondida |  | | Report (issue) | | Mines and mineral resourcesâPeruâHistory. 2. MetallurgyâPeruâHistory. 3. Peruâ Antiquities. I. Title. TN52...use today. Native copper from the Cerro de Pasco Mine, a shell used as a palette for mixing cinnabar-based...in Latin America. The pleasure has certainly been mine. I would like to express my sincere thanks and appreciation...world. And, if I remember correctly, it was Prof. Jorge Muelle who first told me about Petersenâs geological...MinerĂa y Metalurgia en el Antiguo PerĂș. When Dr. Jorge Muelle became director of the Museo Nacional de |  | | Book | | Universidad Nacional de lngenieria, and Newmont Peru Limited Gerente de Exploraciones Av. Jose Galvez...Galvez Barrenechea 218, Urb. Corpac Lima-San Isidro, Peru Prof. Dr. ESTEBAN CEDILW Facultad de Minas, Metalurgia...place in September 1986 in Cusco, Peru, sponsored by Multiciencias (Peru) and UNESCO. During this seminar...Latorre, Director of the Multiciencias courses in Peru strongly supported the whole organization of the...Occurrences in the Paleozoic of the Yauli Dome, Central Peru H. W. Kobe . . . . . . . . . . . . . . . . . . |  | | Journal (article/letter/editorial) | | Casino (Godwin, 1976). The daciteagglomerate at Toquepala(Richard and Courtright, 1958) and rocks of the...clearly later than and superposedon all deuteric Anhydrite either replacesthe interiors of plagioclasegrains...quartzdioriteis normallywell zoned.) In a few examples anhydrite grains occur throughout the plagioclase with no...moderate biotite alteration that is coextensive with Anhydrite and calcite are mutually exclusive in pervasivesecondary...andCesbron, F. P., 1977, Rutileandapatite: pala,Peru: Mining Eng., v. 10, p. 262-266. Usefulprospecting |  | Chen, H., Clark, A. H., Kyser, T. K., Ullrich, T. D., Baxter, R., Chen, Y., Moody, T. C. (2010) Evolution of the Giant Marcona-Mina Justa Iron Oxide-Copper-Gold District, South-Central Peru. Economic Geology, 105 (1) 155-185 doi:10.2113/gsecongeo.105.1.155 | Journal (article/letter/editorial) | | Justa Iron Oxide-Copper-Gold District, South-Central Peru HUAYONG CHEN,1,â ,* ALAN H. CLARK,1 T. KURTIS KYSER...Costa of northern Chile and central and southern Peru, are now recognized as hosting major IOCG mineralization...ne Ca Rosa Maria s Marcona Pampa de Pongo 12 Peru B N o Tocopilla Guanillo s Gatico Ocean Ocean...iron deposits, and manto-type Cu-Ag deposits in Peru and Chile (from Clark et al., 1990; Hawkes et al...of the IOCG mineralization belt of south-central Peru (modified from Vidal et al., 1990), illustrating |
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