 | | Journal (article/letter/editorial) | | pohwatp@si.edu ENARGITE Longfellow Mine, Red Mountain District, San Juan County, Colorado Are all things...the north orebody of the Longfellow mine, Red Mountain district, San Juan County, Colorado. Specimen...Chemically, enargite is Cu3AsS4 and is dimorphous with luzonite, whose chemical formula is the same as enargite’s...marcasite crystals are orthorhombic.) Enargite and luzonite are ores of copper, with enargite being the more...sedimentary-hosted lead-zinc deposits of the Tri-State district in the United States. It is known to replace pyrite |  | | Journal (article/letter/editorial) | | Skinner (1967, p. 306). The relations between luzonite,the low temperaturepolymorphof enargite, and famatinite...from such low temperaturedepositsas the Joplin district, Goldfield, Nevada, and Chinkuashih, Taiwan, raise...famatinite. X's representanalyzedcoexistingpairs from Julcani,Peru. The enargite-famatinite solvusis as shownin...conducted on the ARL from Julcani mining district, Province of Angaraes, Peru (Goodell,1970), hasconfirmedthat...searchCorporation. temperaturesof 325ø to 365øC from the district DEPARTMENT OF GEOLOGICAL SCIENCES (Petersen and |  | | Journal (issue) | | TSKnerals of i'eru ! Indian miner, Cerro de Pasco, Peru, 1869 (Simonin, 1869). J3E(mes and J3E(merals...crystal group, 7 cm, from the Huanzala mine, Dos de Mayo Province, Peru. Marty Zinn collection; Jeff Scovil............................... History of Peru Mining in Peru The Mineral Specimen Business C o l l e c....................... Quiruvilca district, Santiago de Chuco province, department of La Libertad PASTO.......................... Pasto Bueno district, Pallasca province, department of Ancash R a u r a -H u |  | | Journal (article/letter/editorial) | | GEOLOGY AND MAJOR ORE DEPOSITS OF CENTRAL ULRICH PERU PETERSEN CONTENTS PAGE Abstract ..............the center of the districts to the margins. This district zoning is modifiedby local or orebodyzoning and...complexenterprise,includingthe Goyllarisquizga coal mine, concentrating, smelting,and refiningfacilitiesand...observations and ideas. MAJOR ORE DEPOSITS OF CENTRAL PERU 409 General summariesare presentedby McLaughlin...ßO0•A BASILIA YAURIOOCHA LOCATION CENTRAL 50 MAP PERU 0 50 •ILOM[T[RS ß Fro. 1. Locationmap. GASTROVlRREYNA |  | | Journal (article/letter/editorial) | | and Ag-sulphosalts in a zoned ore deposit, Julcani, Peru R. O. SACK1,* 1 2 AND P. C. GOODELL2 Department...ABSTR ACT The sulphide ores from the Julcani mining district (Peru) display many retrograde reactions that...[~(Cu,Ag)10(Zn,Fe)2(Sb,As)4S13] from the Herminia mine exhibit pronounced downstream enrichments in molar...retrograde reactions, Julcani District, Peru. Introduction THE Julcani mining district in Peru is located in...in the Angaraes province, Department of Huanacavelica, ~250 km SE of Lima (Fig. 1). It is a major mining |  | | Report (issue) | | Luzonite Cu3 AsS4 c 2001-2005 Mineral Data Publishing, version 1 Crystal Data: Tetragonal. Point Group:...deduction of 0.97% insol. and 0.56% pyrite. (2) Huaron, Peru; by electron microprobe. (3) Cu3 AsS4 . Polymorphism...the Lepanto mine, Mankayan, Luzon, Philippines [TL], as an ore mineral. In the Chinkuashi mine, Keelung...La Rioja Province, Argentina. In the Julcani district, at Cerro de Pasco, and at Huaron, Peru. In the...Golden Chariot mine, Jamestown district, Nye Co., and in the Burrus vein, Pyramid district, Washoe Co.; |  | | Journal (article/letter/editorial) | | 1924-1938 The MagmaticHydrothermalSystemat Julcani,Peru' Evidencefrom Fluid InclusionsandHydrogenand...died in an automobileaccidentnear Cerro de Pasco,Peru,onJuly13, 1994. JeffwasbornDecember3, 1957, in Oakland...-1554.00 1924 MAGMATICHYDROTHERMALSYSTEM,JULCANI,PERU 1925 hadreturnedto field-orientedstudies,in...southeast of Lima(Fig. 1). Production from the district began in Spanishcolonial times whenfree-milli...Julcanidistricthave concentratedon the geologyof the district,mineralogy of the veinsand associatedalterated |  | Škácha, Pavel, Buixaderas, Elena, Plášil, Jakub, Sejkora, Jiří, Goliáš, Viktor, Vlček, Vojtěch (2014) Permingeatite, Cu3SbSe4, from Příbram (Czech republic): Description and Raman spectroscopy investigations of the luzonite-subgroup of minerals. The Canadian Mineralogist, 52 (3) 501-511 doi:10.3749/canmin.52.3.501 | Journal (article/letter/editorial) | | DESCRIPTION AND RAMAN SPECTROSCOPY INVESTIGATIONS OF THE LUZONITE-SUBGROUP OF MINERALS Pavel ŠKÁCHA§ Institute of...occurrence, the Příbram uranium-base metal ore district (central Bohemia, Czech Republic), has been studied... only two, Sb-As and S-Se, play a role in the luzonite group minerals. The only other element (as documented...present study) which enters the structure of the luzonite-group minerals in considerable concentrations...to characterize vibrational properties of the luzonite group of minerals. The dominant feature in the |  | | Journal (article/letter/editorial) | | ag e of the Cerro de Pasco Cu-Zn-Pb-Ag deposit, Peru E.S. Cheney * Department of Geology, Rand AfrikaansUniversity...world-famous Cu-Zn-Pb-Ag deposit at Cerro de Pasco, Peru, consists of texturally massive pyrite, texturally...Longitudinal fault, one of the largest faults in the district, but the Vent is not. Imbrication by the Longitudinal...The Cerro de Pasco Cu-Zn-Pb-Ag deposit of central Peru (Fig. 1) has long been genetically linked to the...associated smaller pipe-like bodies of enargite and luzonite and of pyrite that yields payable silver), massive |  | | Report (issue) | | steam-heated environments, such as those at the Tolfa district, Italy and Marysvale, Utah, and numerous modern...epithermal deposits such as Summitville, Colorado; Julcani, Peru and Red Mountain, Lake City, Colorado are characterized...Arribas, Jr., currently studying the Rodalquilar district in Spain as part his Ph. D. program, and Jeff...recently completed a Ph. D. dissertation on Julcani, Peru each conducted the stable isotope portion of...of acid-sulfate alteration in the Red Mountain district near Lake City, Colorado, and supplied samples |  | | Journal (article/letter/editorial) | | tetrahedritesfrom Coeur d'Alene,Idaho, and Orcopampa andJulcani,Peru,to documenttheseobservations. Similarheterogeneity...Althoughgenerallyclassedasa copper samplesfrom Casapalca,Peru (Wu and Petersen, sulfosalt,its crystalstructur...tetrahedritesare commonlyhet- Idaho; Orcopampaand Julcani,Peru; and Creede, erogenousin composition(Yui, 1971;...proximalto the presumedsourceof the solutions Casapalca,Peru (determinedby the zonationof wall-rockalteration...1932). (1974), and Wu and Petersen(1977). This district :::.:•:• ?•;;i•?,'•, -•:--•.' •-;•-:?'ii•i;•i |  | | Journal (article/letter/editorial) | | volcanicdomefield. Many peoplehave vidual deposits:Julcani, Peru; Summitville,Colo- contributedto our knowledgeof...200øto minutesat dikelets is in the center of the district. Six centers of 400øC(Table1). Theseratesof equilibration...Percent eventsthat reachedvery shallowlevels.The district hasbeentheobjectof studyformanyyears(Goodell ...SOCIETYOF ECONOMICGEOLOGISTS FIc. 6. Geologyof the Julcani,Peru,domefield showingigneousstagesand outlineof...oxidationstateof both preoreandore-stagehydrothermalfluidsat Julcani appearsto have been controlledby exchangewith |  | | Journal (article/letter/editorial) | | chalcosfibite; sin, sinnerite; faro, famatinite-luzonite solid solution; cpy, chalcopyrite; pbs, miscellaneous...miscellaneous lead sulfosalts, # Fahlore from area c in Julcani sample 8764 (J-c) contains 11.42(0,69) wt. % Ag...indicates one bournonite-argentian fahlore pair from Julcani (Table 1). Error bracket above the solid ellipse...(Mishra and Mookherjee, 1986) and the Julcani mining district, Peru (Goodell and Petersen, 1974) provide...bournonite-argentian fahlore-bearing ores from the Julcani mining district, in which bournonites are intimately intergrown |  | | Journal (article/letter/editorial) | | Zn-Pb-Ag-Cu-Bi Mineralization at Cerro de Pasco, Peru* REGINA BAUMGARTNER†,** LLUÍS FONTBOTÉ, Department...Pasco Cordilleran base metal deposit in central Peru is located on the eastern margin of a middle Miocene...Teck Cominco Peru, Psje. los Delfines 159, Las Gardenias, Santiago de Surco Lima 33, Peru. 0361-0128/08/3739/493-45...American 0361-0128/98/000/000-00 $6.00 Cordillera and Peru. Table 1 summarizes the characteristics of several...after Butte (Montana), is Cerro de Pasco, in central Peru. It is a Zn-Pb-Ag-Cu-Bi deposit spatially related |  | Bethke, Philip M., Rye, Robert O., Stoffregen, Roger E., Vikre, Peter G. (2005) Evolution of the magmatic-hydrothermal acid-sulfate system at Summitville, Colorado: integration of geological, stable-isotope, and fluid-inclusion evidence. Chemical Geology, 215 (1) 281-315 doi:10.1016/j.chemgeo.2004.06.041 | Journal (article/letter/editorial) | | quartz monzonite porphyry intrusion underlies the district and is cut and overlain by pyrite–quartz stockwork...acidsulfate-altered rocks host subsequent covellite + enargite/luzonite + chalcopyrite mineralization accompanied by kaolinite...the geology, mineralogy, and geochemistry of the district (Steven and Ratté, 1960; Stoffregen, 1985, 1987;...weathering of such deposits in both natural and mine-related exposure (Gray et al., 1994). Deposits having...contain bhigh-sulfidationQ minerals (enargite–luzonite–covellite–pyrite) are of the Summitville P.M |  | | Journal (issue) | | Sulfosalt Environment: The Mineralogy of the Julcani District, P e r u ............................................ 247 WULFENITE—from level 4 of the 79 mine, Gila County, Arizona. The specimen was collected...their help, and their country, where a change in mine ownership has also response has been wonderful....Individuals who have con sometimes meant a change in mine name. How many sented to serve as members of this... VIOLARITE FROM N IIH tlf A L u ■THE GAP NICKEL MINE by J. A. Speer and E. C. M artin Virginia Polytechnic |  | | Journal (article/letter/editorial) | | Metal Ratiosof the Quiruvilca Mining District, Northern Peru PAULJ. BARTOS ASARCOInc., RockyMountai...generate too muchnoiseto discernsignificantpatterns. District-scale metalratiosof basemetallodedepositsshowconsiderable...Thisstudydealswiththe southern partof theQuiruvilcabasemetallode district(Coco-LuzAngelica area),whichis locatedapproximately...locatedapproximately 80 km eastof Trujillo in north-central Peru (Fig. 1). Detailsof the districtandregionalgeologyare...districtresembles other basemetal lodessuchasJulcani,Peru (Petersenet al., 1977); CentralCity, Colorado(Simsand |  | | Journal (article/letter/editorial) | | 2017 Reequilibrated fluid inclusions in enargite-luzonite from the Chelopech high-sulfidation Cu-Au epithermal...fine-grained sulfide ore. Weak manifestations of luzonite followed enargite, but highresolution transmission...numerous luzonite layers in enargite structure, as well as abundant pseudomorphs of luzonite after enargite...probably by the polymorphous transition enargite-luzonite on cooling. It is concluded that enargite is deposited...the high-temperature polymorph of the enargite-luzonite series (Cu3AsS4) with an inversion temperature |  | | Report (issue) | | the Summitville mine................... 29 INTRODUCTION The Summitville mining district has received...of Galactic Resources, operated an open-pit gold mine at Summitville during the period from 1986 to 1992...pond. Acidic, metal-rich mine waters emanating from several sources on the mine site are long-term concerns...SCMCI operated a low-grade/high tonnage open-pit mine from which approximately 9,250,000 metric tons of...event 6, are widespread in the Summitville open-pit mine (pi. 1), but are generally small and rarely exceed |  | | Journal (issue) | | Cd-bearing phosphate mineral from the Gold Quarry mine, Eureka County, Nevada . . . . . . . . . . . . ...crystal cluster, 7.3 cm, from near Bapu, Guangdong Province, China. Rob Lavinsky specimen, now in the Tom...recovered from the dumps of this small mine. Local collectors reworked the mine dumps many times in search of...about 325 meters southwest of the Bishop manganese mine. The locality was early on referred to as a “copper...spatially distinct from the nearby Bishop manganese mine. The dumps do not contain significant manganese |  | | Journal (article/letter/editorial) | | high-sulfidation gold deposits, such as Yanacocha, Peru, are the surface expression of structurally-controlled...Red Mountain, CO6, Underground sample, Longfellow Mine, Red Mountain, Silverton, Colorado). Images: a)...inclusions in alteration assemblages in the Nansatsu district, Japan, as did Jannas et al. (1999) in alunite...sampled from a number of deposits in Europe and Peru (Moritz and Benkhelfa, 2009). These liquid-phase...An estimate of the range for Lepanto ‘enargite–luzonite’ is provided based on a smelter concentrate assay |  | | Journal (article/letter/editorial) | | Srednogorie, en Bulgarie. Le développement de ce district métallogénique est lié à une activité magmatique...deposits in the Panagyurishte ore district, Bulgaria. The district is part of the Srednogorie zone (Fig...geology of the southern part of the Panagyurishte district with location of the major mineral occurrences...data from the southern part of the Panagyurishte district confirm that both metals and sulfur in the ore...by-product from the pyrite and copper concentrate. The mine closed in 1995. The deposit consists of several |  | | Journal (article/letter/editorial) | | determinedfrom tennantite assemblages from the Hock Hocking mine at :0.1, (yfii/7li!) the values of ln for Xli! 0...ERTIES OF T ET RAH EDRIT E.T ENN AN T IT ES Hocking mine span virtually the entire range of Xff. Raabeand...growth-zoned tetrahedrite-tennantitesfrom Hock Hocking mine is consistent with fluid inclusion temperaturesfrom...reported by Shimazaki (1974)and those from Julcani, peru (Kane and Peterson,1985).If values of RT ln...remarkablyparallel,exceptfor severalsamples from Julcani (Fig. 6). It is apparentthat most of these trends |  | | Journal (article/letter/editorial) | | Estrella mine), contains tetrahedrite isotypic series minerals (TISM), famatinite–luzonite series minerals...sphalerite, whereas the upper level (Majadillas mine), shows an “epithermal association” composed by...zonation verticale. Le niveau inférieur, exposé dans la mine La Estrella, contient des minéraux de la série isotypique...tétraédrite, des minéraux de la série famatinite–luzonite, pyrite, chalcopyrite, ainsi que des quantités... tandis que le niveau supérieur, exposé dans la mine Majadillas, montre une “association épithermale” |  | | Journal (article/letter/editorial) | | particularly well revealed in the Mankayan mineral district of northern Luzon, Philippines, where the Lepanto...The ore stage at Lepanto consists of enargite-luzonite (Cu,As&), pyrite, tennantitetetrahedrite, and...particularly well revealed in the Mankayan mineral district of northern Luzon, Philippines, where the Lepanto...and base metal deposits are also present in the district (Garcia, 1991). This common spatial association...high-sulfidation Cu-Au deposit is located in the Mankayan district, -70 km northeast of Baguio, in northern Luzon |
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