 | | 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...biotite-potassium feldspar, or albite-chlorite ± calcite alteration. Mineralization at Candelaria-Punta |  | | 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...hematite and chalcopyrite. Gangue is dominantly calcite with minor quartz. The host silicate assemblage...tailings have excess of acid potential (7.1 wt.% calcite and 3.5 wt.% pyrite), whereas the older downstream...40 wt.% calcite and 2 wt.% pyrite) and intervals with high acid potential (about 3 wt.% calcite and 4 wt |  | | Journal (article/letter/editorial) | | REGIONAL GEOLOGY MINING OF THE CHANARCILLO SILVER DISTRICT AND ADJACENT AREAS, CHILE 1 KENNETH SEGERSTROM...of silver-producingmining districts in northern Chile. Part of the belt, parallel to the Pacific Coast...bodies. INTRODUCTION THE Chafiarcillosilver mining district is locatedat 27o48.6 ' S. Lat. and 70o25.6...Chafiarcillois the chief one of about 20 silver mining districts(Fig. 1) that lie withina narrowbeltroughlyparallelto...unpublishedmap, later incorporatedin the MetallogenicMap of Chile (in press), but for criticallyreviewingthe presentmanuscript |  | | 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 |  | | 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...memories are of collecting quartz in Montana, calcite in Utah, silver, galena, sphalerite, and amethyst |  | | 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 |  | | 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 (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...THE NORTH-CENTRAL ANDES of Chile is a well-known porphyry copper province with many large deposits (Munizaga...and mineralization. One example is the Caicayén district, in northwest Neuquén state (Fig. 1), where skarn...with porphyrystyle alteration. Although Fe mining in the district began during early 1950, no geochemical |  | | 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 |  | | Journal (article/letter/editorial) | | Chalcopyrite, and minor bornite, occurs in quartz–calcite–(adularia) veins in the Kingston deposit associated...propylitic alteration consisting of calcite epidote(Cal) (Ep)inand calcite (Cal) photomicrograph of propylitic...V2 O3 . Epidote that coexists with chlorite and calcite in propylitic alteration varies in composition...and diorites todiorites the Escondida deposit, Chile, Cu contain 6–80Chile, ppm Cu and 32–99 ppm Cu and...epidote and chlorite filling voids between the calcite (Figure 3c). Sulfides and oxides associated with |  | | 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 |  | | 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 |  | 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 |  | | 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 |  | | 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 |  | | 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) | | except the Dale Beck Valley, Dry Gill and Carrock End Mine. Grahamis hoping to get the permit system properly...still very much a 'frontier place'. One supposed mine was started by a character called Otto van Stryk...Stryk who thought he had found a huge iron mine. Alas, he never got any useable ore out of it. Rick went... So now it is recognised as a potential uranium mine! Another anecdote involved a light plane brought...amethyst, fluorapatite and tourmalines. Rossinguranium mine, a uraniferous granite, was also mentioned. Rick |  | | Report (issue) | | literature. An example was with the Osamu Utsumi mine in Brazil. This deposit has been reported in the...includes the deposit or occurrence name, the mining district, the tectonic setting, the geological type...The given name for the occurrence or deposit. PROVINCE The major region political subdivision of the...producer. Mine A mine is a deposit from which ore is currently being recovered. Depleted Mine A depleted...depleted mine is, a mine-out or depleted ore deposit with insufficient Reasonably Assured Resources recoverable |  | | Journal (article/letter/editorial) | | 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...finelybeddedsedimentary rockforms Veins of the Oreopampa District partoftheSantaRosaFormation. Dacitedomes, flows |  | | 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 (issue) | | Department of Geology, New Mexico Institute of Mining and Technology, Socorro, New Mexico. We are indebted...Spectacular Rhodochrosites Call and ask about recent mining discoveries 20660 N.W. 27th Avenue Boca Raton...E - M - S - T - O - N - E Wulfenite, Red Cloud Mine, La Paz Co., Arizona Send $7.50 for our Mineral...noted sinhalite from Eheliyagoda in Sabaragamuwa Province. Gunawardene and Rupasinghe (1986) in cluded...minerals from the Elahera gem field in Central Province. Henn (1985) characterized a distinctive olive-green | | | Journal (issue) | | Department of Geology, New Mexico Institute of Mining and Technology. Socorro, New Mexico. We are indebted...· E · M · S · T· 0 · N · E Wulfenite, Red Cloud Mine, La Paz Co., Arizona Send $7.50 for our Mineral...noted sinhalite from Eheliyagoda in Sabaragamuwa Province. Gunawardene and Rupasinghe ( I 986) in cluded...minerals from the Elahera gem field in Central Province. Henn ( 1 985) characterized a distinctive ol...occurrence in the Kwakonje area of the Handeni district in northeast Tanzania (von Knorring, 1 967; Bowden |
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