 | | Catalog/List | | PYRITE, GALENA, SPHALERITE: Various localities, Peru: Check out our Peruvian pages to get an idea of...spent the past three years living and working in Peru and had just moved back with all the goodies he...&Kploration. $5.00 IRIDESCENT GOETHITE COVERING QUARTZ: Grandfather Mountain, Georgia: Choice specimens...morel These are terrific, large, mostly terminated quartz crystal, almost totally covered with a rainbow...wtth lrfdHcant goethite over ma11ive goethlte or quartz. These are only $4.~0 ,ach. MALACHITE FLOWERS: |  | | Journal (article/letter/editorial) | | sulfide mineralization is present in the Julcani mining district, Peru, as fracture fillings in Tertiary volcanics...are used to determinemetal ratios throughoutthe district. The changesin metal ratios are large and systematic...mineralizing solutions. In the southeast.ernpart of the district, Herminia-Lucrecia, ratios change systematicallyaway...changesin three other mineralized areas of the district indicate general domal zoning. In general,Pb/Cu...as are determinedthroughoutthe Julcanimining district, Peru, usingmetalcontentdata available' from seen'by |  | | Report (issue) | | from the Lily mine near Pisco, Pisco Province, Ica Department, Peru. Trinity Minerals specimen; John Veevaert...clinoatacamite in the Lily mine, Pisco Province, Ica Department, Peru. In 1998 this copper mine began giving...clinoatacamite crystals resting on cavity walls with drusy quartz and chrysocolla-stained calcite. At Munich, John...Zirconolite, 1.2 cm, from Kyauk Tha Mountain, Mogok district, Myanmar. Trinity Minerals specimen; John Veevaert...alluvial deposit near Kyauk Tha Mountain, Mogok district, Mandalay Division, Myanmar (Burma). John says |  | | Journal (article/letter/editorial) | | variety of albite, calcite, epidote, muscovite, quartz, titanite, chabazite, and stilbite. Another important...caught my breath and hoped it wasn’t a shard of quartz. Carefully, I used just my index finger to push...coated and uncoated with chlorite and a few small quartz specimens, but no more fabulous apatites. Of course...” 5.6 cm tall, Alchori, Shigar Valley, Skardu district, GilgitBaltistan, Pakistan. Private collection...Central Metasedimentary Belt of the Grenville Province of Canada (Tait and Bainbridge 2013); the apatite-magnetite |  | | Report (issue) | | metal-bearing, epithermal deposits of Mexico and Peru by Nora K. Foley Open File Report 84-633 This...districts Guanajuato District, Guanajuato, Mexico References Geologic map of Guanojuato District, Mexico Pachuca-Real...del Monte District, Hidalgo, Mexico References Geologic map of Pachuca-Real del Monte District, Mexico...Colqui District, Lima, Peru References Geologic map of Colqui District, Peru Julcani District, Huancavelica...Huancavelica, Peru References Geologic map of Julcani District, Peru 1 2 3 4 4 10 11 12 16 18 19 24 25 26 |  | | Journal (issue) | | TSKnerals of i'eru ! Indian miner, Cerro de Pasco, Peru, 1869 (Simonin, 1869). J3E(mes and J3E(merals... 7 cm, from the Huanzala mine, Dos de Mayo Province, Peru. Marty Zinn collection; Jeff Scovil photo................................ 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) | | pp. 931-949 Geologyof theJulcaniMiningDistrict,Peru I,JLRICHPETERSEN, DONAnDC. NOBLE.MARIOJ. ARENAS...(Ag-Bi-Pb-Cu-W-Au) mineralizationat the Julcanidistrict, central Peru, is geneticallyrelatedto a geologicallybrief pulseof...detailedmetal ratio contouring.The central part of the district, characterized by the pyritic gold-tungstenmineralization...considerably in guiding exploration and development of Julcani, alloxvinga marked increasein ore reserves,as well...Julcanimining district has been the object of a large numberof geological the departmentof Huancavelica,Peru (see |  | | Journal (article/letter/editorial) | | Siete Suyos Mine, Atocha-Quechisla District Sud Chichas Province, Potosí Department, Bolivia O ne of...species include azurite, pyromorphite, fluorite, quartz, and calcite. Then there are the minerals that...Siete Suyos mine, Atocha-Quechisla district, Sud Chichas Province, Potosí Department, Bolivia. The main...pseudomorph siderite include hematite, magnetite, quartz, cacoxenite, calcite, barite, and various chlorite...248 ROCKS & MINERALS Figure 2. Siderite with quartz, from Mine Hill, Roxbury, Litchfield County, Connecticut |  | | Report (issue) | | Association: Tetrahedrite, miargyrite, stannite, pyrite, quartz. Distribution: From the Animas mine, Chocaya,...[TL]. At Herminia, Julcani district, and in the San Genaro mine, Huancavelica, Peru. From the Armonia...Quevar, Salta Province, and in the Pirquitas deposit, Riconada Department, Jujuy Province, Argentina. From...Bolivia. At the El Indio mine, El Indio-Tambo district, east of La Serena, Coquimbo, Chile. From the |  | | Journal (issue) | | 89 by W. E. Wilson The Palomo mine, Huancavelica Department, Peru . . . . . . . . . . . . . . . . . .... .95 by J. Hyršl Pseudomorphs from Peru . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...Hyman Savanar Trophy in 2005 for a morganite-and-quartz specimen from the Cryo-Genie mine in San Diego...with hand tools a fabulous pocket of amazonite and quartz crystals. A couple of years later Bob and I rented...March–April, 2008 The Palomo Mine Huancavelica Department, Peru Jaroslav Hyr l e urtum 383 CZ-14200 |  | | Journal (article/letter/editorial) | | rises to 6,272 meters (20,577 feet), Huascaran in Peru is 6,768 meters (22,205 feet), Tocorpuri on the...mining and smelting oxidized copper ores in central Peru about 1500 B.C. By the time the Spanish conquered...Uchucchacua, Peru; emeralds from Muzo, Colombia; pink fluorite and huge pyrites from Huanzala, Peru; 25-cm...Bolivia; and fantastic pyrargyrites from Hauncavelica, Peru. The combination of awe-inspiring topography, mining...in location and age. In the highlands of central Peru, the deposits have veins rich in lead and silver; |  | | 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...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...mining district that accounts for signi cant quantities of Pb, Cu, Ag and Bi, and has been mined intermittently |  | | Journal (article/letter/editorial) | | calcite, dolomite, siderite, barite, fluorite, and quartz. There are occurrences where exceptionally rare...familiar to mineral collectors is the intergrowth of quartz and feldspar known as graphic granite. Pseudomorphs...group of sharp and complex tennantite crystals with quartz from the El Cobre mine, Concepción del Oro, Zacatecas...chalcopyrite and are associated with siderite, pyrite, and quartz. Some of these specimens have a sooty coating that...fingers black if handled carelessly. The Georgetown district, also in Clear Creek County, has produced some |  | | Report (issue) | | characterized by the assemblage alunite+kaolinite+ quartz± pyrite, results from base-leaching by fluids concentrated...characterized by the assemblage: alunite + kaolinite + quartz ± pyrite. It is a product of extreme base-leaching...different origins of alunite in the Marysvale, Utah district. Pickthorn and O'Neil (1985) determined the fractionation...Disproportionation may take place in magmatic (e.g., Julcani) or mixed magmatic-meteoric (e.g., Summitville)...kaolinites: Buckskin Mtn., National district, NV The National district has been well documented by the comprehensive |  | | Journal (article/letter/editorial) | | forms are not rare. Some crystals from Huanzala, Peru, develop hexagonally shaped octahe188 ROCKS 81...easy. RARE BISMUTH SULFOSALTS FROM THE JULCANI DISTRICT, PERU. G. W Robinson’, J. Van Velrhuizenl,and...British Columbia, Canada V6C 3L9. The Julcani mining district is hosted by a Tertiary volcanic complex...approximately 200 kilometers southeast of Lima, Peru. Mining in the district began in the late 1930s, and since that...study of specimens recently obtained from the district has identified five rare bismuth-sulfosalt minerals |  | | Report (issue) | | Geological Survey, Reston, Va.; V. Raul Eyzaguirre, Lima, Peru; Fernando Urquidi B., American Embassy, La Paz,...Argentina, western Boliva, northern Chile, and southern Peru, are potential targets for hydrothermal mineral...volcanism in the central Andean region of southern Peru, northern Chile, western Bolivia, and northwestern...investigations. 1 76" 68' 72° \ 12° 12° PERU Macusani > 16' ijj®...(1984 and the Institute de Geologia y Vh'neria del Peru (1975). 1A Although many papers about the young |  | | Report (issue) | | characterized by the assemblage alunite+kaolinite+ quartz±pyrite, results from base-leaching by fluids concentrated...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...alunite in the assemblage: alunite + kaolinite + quartz ± pyrite (Hemley and Jones, 1964; Meyer and Hemley...Arribas, Jr., currently studying the Rodalquilar district in Spain as part his Ph. D. program, and Jeff |  | | Report (issue) | | deduction of 0.97% insol. and 0.56% pyrite. (2) Huaron, Peru; by electron microprobe. (3) Cu3 AsS4 . Polymorphism...sulfosalts, silver, gold, marcasite, alunite, barite, quartz. Distribution: From the Lepanto mine, Mankayan...La Rioja Province, Argentina. In the Julcani district, at Cerro de Pasco, and at Huaron, Peru. In the...Chariot mine, Jamestown district, Nye Co., and in the Burrus vein, Pyramid district, Washoe Co.; from Butte |  | | Report (issue) | | aggregates of granular crystals, in boulders of vein quartz which occur in the scree of a landslip (Salzburg...Chalcopyrite, covellite, cerussite, chlorite, mica, quartz (Salzburg, Austria); cuprobismutite, cupropavonite...Outlaw mine, Round Mountain district, Nye Co., Nevada. In the Julcani district, Peru. From the Shin-Ohtoyo...Shin-Ohtoyo deposit, Harukayama district, Hokkaido, Japan. In the Funiushan copper skarn deposit, near Nanjing,... Jiangsu Province, China. At Inkur, Transbaikal, Russia. Name: To honor Professor Dr.-Ing Otmar Michael |  | | Journal (article/letter/editorial) | | Geological and Hydrothermal Processes, Northern Peru a b Andrew W. Macfarlane , Rosa-Maria Prol-Ledesma...Geological and Hydrothermal Processes, Northern Peru, International Geology Review, 36:7, 645-677, DOI:...Geological and Hydrothermal Processes, Northern Peru A N D R E W W. MACFARLANE, Department of Geology...Abstract Mineralization in the Hualgayoc district of northern Peru occurs in altered Miocene felsic intrusions...rock-hosted base-metal veins. Igneous rocks in the district are affected by propylytic, sericitic-argillic |  | | Journal (issue) | | minerals associated with ironstones, such as siderite, quartz, millerite, galena, sphalerite, siegenite, ankerite...recognised the tell tale signs of black to greasy brown quartz, in which the crystal structure is destroyed by...phases in a rock sample (including the type of quartz), sphalerite hitherto unsuspected in a galena-barite... mid Wales, northeast Wales, Derbyshire, Lake District, mid Pennines, North Pennines (classic for smithsonite)...around each of these areas, starting with the Lake District. Mention was made of the 10 ton block of smithsonite |  | | Journal (article/letter/editorial) | | isotope and filling temperatures (315 to 730 8C) in quartz. The data from anhydrite and coexisting sulfides...magmatic-hydrothermal environment leading to alunite+pyrite+quartz+kaolinite assemblages results from the disproportionation...1a has oxidation states between those near the quartz–fayalite–magnetite (QFM) buffer (Ohmoto, 1986)...mineralogy of igneous rocks in the Julcani district, Peru The Julcani district (Fig. 3) contains a remarkable...Silberman, 1984; Deen, 1990; Deen et al., 1994). The district is an exceptional area for the study of sulfate |  | | Journal (article/letter/editorial) | | POTASSIUMAND RUBIDIUM METASOMATISM AT THE ]ULCANI DISTRICT, PERU DARYL A. SCHERKENBACH NorandaExploration...determined and rubidium metasomatism on both a district-wide scaleandat closeproximityto veinsandveinsystems...hydrothermalalterationand mineralization(Scherkenbach,1978). The Julcani Mineralogy and Chemical Changes districtis well...mineralizationhave similaroriginaltexturesand com- andesine,quartz, and biotite accompaniedby minor positions,(2)...fine-grainedor glassy Most of the altered rocksin the district thedetermination of accurate background values |  | | Journal (article/letter/editorial) | | December 2014 Realgar Jiepaiyu Mine, Shimen, Hunan Province, China T here has been a dramatic increase recently...the Gold Bar mine, Antelope district; several locations in the Cortez district; the famous Carlin mine and...and Pinson mines, and prospects in the National district, Hum- Downloaded by [University of West Florida]...Scovil photo. boldt County; the Battle Mountain district, Lander County; the Manhattan Consolidated, Paradise...5 cm across occur with cinnabar, stibnite, and quartz scattered over the surface of specimens that reach |  | | Journal (issue) | | Sulfosalt Environment: The Mineralogy of the Julcani District, P e r u ...................................ONLY 206 SPECIALIZING IN AMAZONSTONE & SMOKY QUARTZ SPECIMENS Paterson, N .J. 07 5 0 5 FINE MINERALS...the ex peditions sent to the Andes of Ecuador, Peru, Bolivia, and Chile in 1921; to Greenland in 1923;...Sulfosalt Environment The Mineralogy of the Julcani District, Peru by Philip C. GoodeII Department of Earth...As these deposits are not of eco215 Fig. 3. Julcani mining camp seen from the southwest. Dacite flows |
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Julcani Mine, Julcani District, Angaraes Province, Huancavelica, Peru