 | | Journal (article/letter/editorial) | | KENNETH SEGERSTROM MATURELAND OF NORTHERN CHILE AND ITS RELATIONSHIP TO ORE DEPOSITS Abstract: The old...extends over a long north-striking belt in northern Chile probably reached the mature stage of erosion by...between Tres Puntas and Cerro del Fraile, in Atacama province (Fig. 2). In that sector no fault scarps are...Antofagasta provinces and the northern part of Atacama province, Chile, extends about 600 miles from the Peruvian...interrupted by bedrock hills. The nitrate deposits of Chile are distributed along the west edge of the pampa |  | | Journal (article/letter/editorial) | | Central Atacama Province, Chile Abstract: Geologically, the central part of Atacama Province straddles...contact between the Andean batholith of western Chile and the stratified rocks to the east. Apophyses...The entire area is in the copper metallogenetic province of Ruiz and Ericksen (1962), and parts of it are...hypogene ore deposits in Chile are represented in the central part of Atacama Province. However, most of the...References cited 317 Figure 1. Index map of Atacama Province, Chile . . . 306 2. Locations of figures in Plates |  | | Journal (article/letter/editorial) | | Candelaria-Punta del Cobre Iron Oxide Cu-Au(-Zn-Ag) Deposits, Chile ROBERT MARSCHIK†,* Lehrstuhl für Lagerstättenlehre...coastal batholith near Copiapó, Chile. This belt includes the large Candelaria mine and a group of middle-...middle- and small-sized mines in the Punta del Cobre district, which is located about 3 km northeast of the...alteration at Candelaria. In the Punta del Cobre district, ore in the deeper parts of the deposits is similarly...formation of specular hematite. In parts of the district, the pseudomorphic replacement of early specular |  | | Journal (article/letter/editorial) | | sulfide mine tailings of Fe oxide Cu–Au deposits from the Punta del Cobre belt, northern Chile Bernhard...del Cobre belt, south of Copiapó, Atacama desert, northern Chile, are geochemically (largely using sequential...mineralogically compared. Main ore minerals are pyrite, magnetite and/or hematite and chalcopyrite. Gangue...of acid potential (7.1 wt.% calcite and 3.5 wt.% pyrite), whereas the older downstream tailings are characterized...2 wt.% pyrite) and intervals with high acid potential (about 3 wt.% calcite and 4 wt.% pyrite). Acid |  | MATHUR, R., Marschik, R., Ruiz, J., Munizaga, F., Leveille, R. A., Martin, W. (2003) AGE OF MINERALIZATION OF THE CANDELARIA Fe OXIDE Cu-Au DEPOSIT ANDTHE ORIGIN OF THE CHILEAN IRON BELT, BASED ON Re-Os ISOTOPES--A REPLY. Economic Geology, 98 (5) 1050-1052 doi:10.2113/gsecongeo.98.5.1050 | Journal (article/letter/editorial) | | de Geología y Geofísica, Universidad de Chile, Santiago, Chile RICHARD A. LEVEILLE, Phelps Dodge Exploration...Minera Candelaria, Tierra Amarilla, III. Region, Chile Sir: We appreciate the opportunity to further discuss...the Lower Cretaceous rock sequences of northern Chile. The brecciated gypsiferous limestones in the upper...evaporites in the Lower Cretaceous belt of northern Chile are not restricted to the Chañarcillo Group. They...1985, p. 913) occur not far from the El Romeral mine (29º42.8' S, 71º14.9' W). In regard to the Re-Os |  | | Journal (article/letter/editorial) | | METALLOGENETIC CARLOS RUIZ PROVINCES F. AND GEORGE OF CHILE, S. A. • E. ERICKSEN CONTENTS PAGE Abstract........... ABSTRACT The metalliferousdepositsof Chile tend to be restrictedto well defined metallogeneticprovinces...synthesis of the knowledgeof the ore depositsof Chile basedon studiesnow beingcarriedout and on publishedand...ore deposits. Most of the known ore depositsof Chile are in the northern half of the country; relativelyfew... 1960) indicatethe magnitudeof presentday mining in Chile: Copper Molybdenum Lead Zinc Gold Silver Mercury |  | | Report (volume) | | in the development of Labrador-Quebec iron ore district, by J. K. Gustafson and A. B. Moss: Engenharia...W. D. Johnston, Jr., and F. M. de Vasconcelos: Mining Mag., v. 72, no. 6, p. 374-375, London, 1945. Manganese...report on manganese deposits in the Serra do Navio district, Territory of Amapa, Brazil, by J. V. N. Dorr...1949. Manganese deposits of the Serra do Navio district, Territory of Amapa, Brazil, by J. V. N. Dorr...14-17, figs. 6-38, 1950. Ores and mining in the Itabira iron district, Brazil [abs.}, by Gilbert Whitehead |  | | Journal (article/letter/editorial) | | tabular bodies, and IOCG mineralization in Northern Chile SERGIO GELCICH,1,2,* DONALD W. DAVIS,3 and EDWARD...Servicio Nacional de Geologia y Mineria, Santiago, Chile Jack Satterly Geochronology Laboratory, University...iron oxide Cu-Au (IOCG) district in the Coastal Cordillera of northern Chile (⬃26°S). They define a precise...Cretaceous magnetiteapatite tabular body in northern Chile and related igneous rocks * Author to whom correspondence...2. GEOLOGY The Coastal Cordillera of northern Chile consists mainly of Jurassic to Cretaceous igneous |  | | Journal (article/letter/editorial) | | the Cordillera of North America, P r o terozoic pyrite-chalcopyrite-sphalerite deposits, syngenetic with...volcanogenic -sedimentary deposits of complex composition (pyrite, siderite, galena, sphalerite, chalcopyrite, and...association of Central Kazakhstan, there are gold-pyrite and pyritic polymetallic deposits (Maykain, Bayankol...the Paleozoic Sambagawa schists; and the Huelva province in Spain ( Rio Tinto). Cimmerian pyritic deposits...Cheshmeh, e t c . ) , recently discovered in this province, are genetically associated with orogenic intrusions |  | | Catalog/List | | and Nevada were his favorites because of their mining and coin minting history. During his second year...the university, Kevin delved into mineralogy and mining history, and began to update his mineral collection...country as well as exploring scores of abandoned mining towns from California to New Mexico to Montana...and in particular, the towns of the Hwy 95 mining district from Rhyolite to Goldfield and Tonopah. Kevin...Kevin Ward Minera! on QUARTZ RHODOCHROSITE District Mine. Climax Climax olTolg-Yole Lake. County. ncredibly |  | | Book | | Universidad de Concepci6n Casilla 4107 Concepci6n, Chile ISBN 978-3-642-88284-5 DOI 10.1007/978-3-642-88282-1.... . . . 37 The Metalliferous Ore Deposits of Chile and Argentina, and Their Geologic Framework J. Oyarzun... . . . . . . . . 147 X Contents El Aguilar Mine: An Ordovician Sediment-Hosted Stratiform Lead-Zinc...Sulfides in the Greenstone Belt of South-Central Chile - An Overview G. Alfaro and S. Callao . . . . ....Formation and Massive Sulfide Orebodies, South-Central Chile: Geologic and Isotopic Aspects S. Callao, G. Alfaro |  | | Journal (issue) | | mines, Kalahari Manganese Field, Northern Cape Province, South Africa ..................................crystals on matrix, 17.2 cm, from the N’Chwaning I mine, collected in 1978. Private collection and photographer...FineMineral.com APATITE Nagar, Hunza Valley, Gilgit District, Northern Areas, Pakistan, 11.5cm. Fine Minerals...Show and Riverpark Inn Rhodochrosite, Sweet Home Mine, USA, 10 cm Photo: Malte Sickinger MARCUS BUDIL...budil-minerals.com Chrysocolla on Malachite Mashamba West Mine Democratic Republic of Congo 26 cm - Joe Budd Photo |  | | Journal (article/letter/editorial) | | University, Pullman, Washington 99164-2812 AND TERESITA F. MONTENEGRO CONICET, Universidad Nacional de...of northwest Neuquén, Argentina, the Caicayén district shares the following features with Cu skarn-porphyry...hematite-magnetite; (3) skarns contain up to 15 percent sulfides (pyrite >> pyrrhotite-chalcopyrite) and locally are associated...silica-pyrite bodies replace prograde skarn and marble; (5) pyroxene-skarn and silica- pyrite alteration...prograde garnet-pyroxene and retrograde silica-pyrite, respectively; and (7) Cu-Au anomalies occur in |  | | Journal (article/letter/editorial) | | chalcopyrite, galena, and sphalerite in quartz–pyrite veins that also have a Ag–As–Hg–Te signature. The...(205 to 382 ◦ C). Sulfur isotope compositions of pyrite (−6.2 to +0.4h) from the Banana Creek prospect...Navilawa caldera. Sulfur isotope compositions of pyrite from the Banana Creek prospect obtained here are...ironoxides, oxides,magnetite, magnetite,and andpyrite. pyrite. The The second second unit unitisisaamonzonite...withminor minoraugite, augite,biotite, biotite,pyrite, pyrite,and andiron ironoxides. oxides. Porphyry Cu-Au–style |  | 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....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...of the adularia-sericite type in the Orcopampa district were worked during Spanish times and since 1965...buried Calera structure was recognized during district-scale geologic mapping in 1972. Exploration began |  | | Report (issue) | | 147. Gold deposits in the French Gulch-Deadwood district, Shasta and Trinity Counties, California, by John...culminating in primary metallization in the Central mining district, Grant County, New Mexico, by W. R. Jones,...depth of flow for mean annual flood, Piedmont Province, by F. A. Kilpatrick ___·__________ Geology and...Willden __________ _ 193. Geology of the ~ount Wheeler mine area, White Pine County, Nevada, by Donald H. Whitebread...change in Neocomian rocks of the Teresita-Chula area, Atacama Province, Chile, by Kenneth Segerstrom_ 230 |  | | Report (issue) | | nomenclature. ABSTRACT The Castrovirroyna mining district lies in the Andean Cordillera of South Central...Supervene silver ores vere first mined. Currently the district produces about 20,000 tons of laad*sinc ore and...and 50OO tons of silver ore annually* The district: Is underlain by Tertiary andesitlc rocks interbedded...vestermaost veins at la Virreyna* In tha center of the district, around Caudalosa, lead sulfantiiaonldas are the...pattern of vallrock alteration throughout the district grades from silicification and scricitization |  | | Report (issue) | | PROSPECTS OF THE I, H, IE, IV, AND V REGIONS, NORTHERN CHILE compiled by William C. Williams Open-File Report...complement to my dissertation work in northern Chile under the auspices of Dr. John Guilbert at the University...prospects in the I, n, IE, IV, and V Regions of Chile (Figure 1). Over 3000 sites were compiled from published...well as descriptions of the major mines throughout Chile with insights as to their genesis. Finally, Frutos...accessed through MRDS computer database). District Name District to which site belongs. Lati tude / Long |  | | Journal (article/letter/editorial) | | chemistry and fate of heavy metal-bearing particles in mining-affected river systems K. A. HUDSON-EDWARDS* Research...discharge of mine or processing waste, tailings dam failures, remobilization of mining-contaminated alluvium...alluvium and mine drainage. The mineralogy and geochemistry of these particles is dependent upon the...chemistry and fate of heavy metal-bearing particles in mining-affected river systems, and identifies six important...heavy metal, mining, mineralogy, geochemistry. Introduction PRESENT-DAY and historic mining activities |  | | Journal (issue) | | the complex 5 General setting 5 Geology of Sub-province I 6 Tahuin semi-pelitic division 6 El Tigre unit...the Zanjon-Naranjo fault zone 19 Geology of Sub-province II 20 Palenque melange division 20 Raspas ophiolitic...Pelado area 46 Loma Larga mine 48 Manganese mine 48 Sacachispas gold mining area 48 Alluvial gold 48 Magnetite...Non-metallic mineral occurrences 48 Jerusalein feldspar mine 48 Quarrying operations 49 Brick clays 49 Sand and...complex, Ecuador segment 45 31 Areas of established mining and distribution of anomalous stream sediment gold |  | | Journal (article/letter/editorial) | | com/journal/minerals Review Environmental Risk of Metal Mining Contaminated River Bank Sediment at Redox-Transitional...January 2014 Abstract: Diffuse metal pollution from mining impacted sediment is widely recognised as a potential...partitioned with iron, manganese and sulphur minerals in mining-contaminated sediment, therefore the dissolution...environmental risk these climate change events pose to mining impacted river systems it is recommended that research...and precipitation of iron and sulphur minerals in mining contaminated river bank sediment; (ii) The temporal |  | | Journal (article/letter/editorial) | | earlystageis definedby quartzq-adulariaq-sericite+ pyrite alteredwall rock and by mineralogicallysimilarveinlets...However,with the discoveryof a largetonthermal district. nage of rich ore containinggold as well as silver...conditionsunder which McKeeandNoble, 1989). In the Orcopampa district, thedifferenttypesoforesweredeposited. Thispaper...theprincipal veinsofthenorthern partofthe Oreopampa district. Qac= Quaternary alluvium andcolluvium; Tm= Mantotuff...AndahuaValley, a largeasymmetric Formation.Within the Calera mine, a thick sequence grabenthat boundsthe districton |  | | Journal (issue) | | crystal group, 7 cm, from the Huanzala mine, Dos de Mayo Province, Peru. Marty Zinn collection; Jeff Scovil...Gustavo Adolfo 250-J Estacion Central Santiago, Chile jZonfenls * * . I n t r o d u c t i o n ..................................... History of Peru Mining in Peru The Mineral Specimen Business C o l l e....................... 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 |  | | Report (issue) | | PUERTO RICO GROUND-WATER QUALITY By Alien Zack, Teresita Rodriguez-Alonso, and Angel Roman-Mas U.S. Geological...presence of relatively soluble and finely disseminated pyrite within the South Coastal Plain alluvial aquifer...Alien Zack, Teresita Rodriguez-Alonso, and Angel Roman-Mas FOR ADDITIONAL INFORMATION: District Chief, U |  | | Journal (article/letter/editorial) | | vein in the central part of the Guanajuato mining district. Hydrothermally altered rocks were characterized...of undiscovered orebodies in the Guanajuato mining district and elsewhere where similar mineralization...(Smirnov, 1962, 1963, 1976, Vassallo, 1981). The district has a 450 year history of production. Estimated... 2009a,b). Hydrothermal mineralization in the district is hosted in several vein systems, but by far...displacement of 1200 m near Las Torres mine and of 1700 m at the Valenciana Mine. The Veta Madre vein was discovered |
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