 | Staude, S., Mordhorst, T., Neumann, R., Prebeck, W., Markl, G. (2010) Compositional variation of the tennantite–tetrahedrite solid-solution series in the Schwarzwald ore district (SW Germany): The role of mineralization processes and fluid source. Mineralogical Magazine, 74 (2) 309-339 doi:10.1180/minmag.2010.074.2.309 | Journal (article/letter/editorial) | | solidsolution series in the Schwarzwald ore district (SW Germany): The role of mineralization processes and fluid...Tübingen, Wilhelmstrasse 56, D-72074 Tübingen, Germany [Received 30 October 2009; Accepted 28 April 2010]...locations in the Schwarzwald ore district of SW Germany. Electron microprobe analysis is used to correlate...sediments. The basement is subdivided into the Baden-BadenZone (BBZ) in the North (belonging to the Saxothuringian)...1980). From the Middle Triassic to Jurassic, SW Germany was part of a shelf platform with distinct time |  | | Journal (article/letter/editorial) | | Geodynamik, Eberhard Karls Universität Tübingen, Germany Received 30 December 2003; accepted 15 November...post-Variscan hydrothermal veins of the Schwarzwald area, Germany, can be divided into two major groups. Type A fluorite...The Schwarzwald area in the Southwestern part of Germany is an ideal area to study the effects of REE fractionation...Co–Ni–Ag–Bi–U-bearing barite–fluorite veins of the Wittichen valley (Bliedtner and Martin, 1986). Others are spread...of hydrothermal pitchblende, on U–He dating of hematite, and on K– Ar dating of K-bearing Mn minerals: |  | | Journal (article/letter/editorial) | | no stolzite equivalent of wulfenite’s Red Cloud mine, yet attractive, somewhat wulfenite-like stolzite...from Chillagoe, Queensland, Australia; the Fat Jack mine, Arizona; and Santa Rosa, Argentina. Stolzite is... These include the well-known Loudville (Mahan) mine at Easthampton, Hampshire County, Massachusetts...Chester County, Pennsylvania, and the Silver Hill mine, Davidson County, North Carolina. It has been found...A fine 1.4-un stolzite on matrix from Ste.Lucie mine, Ste.-Lkgerde Peyre, Lozkre, France;Eric Asselborn |  | Scharrer, Manuel, Sandritter, Katharina, Walter, Benjamin F., Neumann, Udo, Markl, Gregor (2020) Formation of native arsenic in hydrothermal base metal deposits and related supergene U6+ enrichment: The Michael vein near Lahr, SW Germany. American Mineralogist, 105 (5). 727-744 doi:10.2138/am-2020-7062 | Journal (article/letter/editorial) | | U6+ enrichment: The Michael vein near Lahr, SW Germany Manuel Scharrer1,*, Katharina Sandritter1, Benjamin...of Tuebingen, Wilhelmstr. 56, D-72074 Tübingen, Germany 1 Abstract Native arsenic is an occasional ore...Michael vein near Lahr, Schwarzwald, southwest (SW) Germany. Here, galena, sphalerite, and native arsenic are...Technology (KIT), Adenauerring 20b, D-76313 Karlsruhe, Germany. 0003-004X/20/0005–727$05.00/DOI: https://doi.org/10...base-metal vein is the Michael mine near Lahr, Schwarzwald, southwest (SW) Germany, since it operated on a hydrothermal |  | | Journal (article/letter/editorial) | | HYDROTHERMAL VEIN-TYPE DEPOSIT: THE CLARA MINE, SW GERMANY, AS A TYPE EXAMPLE GREGOR MARKL§ Universität...Geowissenschaften, Wilhelmstraße 56, D-72074 Tübingen, Germany MAXIMILIAN F. KEIM Technische Universität München... 85748 Garching, Germany RICHARD BAYERL Ludwigstrasse 8, 70176 Stuttgart, Germany ABSTRACT The Clara...Clara baryte-fluorite-(Ag-Cu) mine exploits a polyphase, mainly Jurassic to Cretaceous, hydrothermal unconformity...unconformity vein-type deposit in the Schwarzwald, SW Germany. It is the type locality for 13 minerals, and more |  | D'Agrella-Filho, Manoel S., Tohver, Eric, Santos, João O.S., Elming, Sten-Åke, Trindade, Ricardo I.F., Pacca, Igor I.G., Geraldes, Mauro C. (2008) Direct dating of paleomagnetic results from Precambrian sediments in the Amazon craton: Evidence for Grenvillian emplacement of exotic crust in SE Appalachians of North America. Earth and Planetary Science Letters, 267 (1) 188-199 doi:10.1016/j.epsl.2007.11.030 | Journal (article/letter/editorial) | | the rocks of the Aguapeí Gp.: red beds of the Fortuna Fm. (Plat = 59.8°N, Plon = 155.9°E, A95 = 9.5,...94/80, Q = 4). The Fortuna Fm. magnetization is hosted by massive, interstitial hematite cement and constitutes...constrained. The reliable and precisely-dated Fortuna Fm. paleomagnetic pole fixes the paleogeographic...identification of Amazon crust in the Blue Ridge province region of North America. © 2007 Elsevier B.V. All rights...comprises basal conglomerates and red sandstones (Fortuna Fm.), overlain by pelitic rocks and fine lithic |  | | Journal (article/letter/editorial) | | from Fortuna Ledge, Alaska "The enclosed sand comes from the north bank of Yukon River at Fortuna Ledge...quartz (smoky, colorless, brownish, reddish) red hematite, brown limonite, black magnetite (much of it has...from Near Karlsruhe, Germany Karlsruhe, one of the large cities of Baden, Germany, is a few miles east...Lieber, Hubbschstr. 24, Karlsruhe, U. S. Zone, Germany. This is a fine grained reddish sand consisting...miles long and 20 miles wide in a beautiful lake region on the boundary line between the states of Jalisco |  | Vallance, Jean, Fontboté, Lluís, Chiaradia, Massimo, Markowski, Agnès, Schmidt, Susanne, Vennemann, Torsten (2009) Magmatic-dominated fluid evolution in the Jurassic Nambija gold skarn deposits (southeastern Ecuador) Mineralium Deposita, 44 (4) 389-413 doi:10.1007/s00126-009-0238-2 | Journal (article/letter/editorial) | | quartz veins and veinlets in association with hematite. Fluid inclusion data for the main Editorial...observed at the mine scale, except at Fortuna. The main ore mineral associated with gold is hematite indicating...endoskarn titanite from porphyritic intrusions at Fortuna and Campanillas as well as Re–Os ages of post-gold...intrusions (quartz-diorite to granodiorite at the Fortuna, Cambana, and Campanillas deposits, Fig. 1), which...these intrusions, like Cumay, 2 km north of the Fortuna mine (Fig. 1), are mineralized with copper and molybdenum |  | Markowski, Agnès, Vallance, Jean, Chiaradia, Massimo, Fontboté, Lluìs (2006) Mineral zoning and gold occurrence in the Fortuna skarn mine, Nambija district, Ecuador. Mineralium Deposita, 41 (4) 301-321 doi:10.1007/s00126-006-0062-x | Journal (article/letter/editorial) | | Mineral zoning and gold occurrence in the Fortuna skarn mine, Nambija district, Ecuador Received: 24 February...May 2006 # Springer-Verlag 2006 Abstract The Fortuna oxidized gold skarn deposit is located in the northern...which are named from north to south: Cuerpo 3, Mine 1, Mine 2, and Southern Sector. Massive skarn bodies...intrusion which crops out below the skarn bodies in Mine 2 and the Southern Sector. Endoskarn alteration...zone is centered on two 060° trending faults in Mine 2, where the highest gold grades (5–10 g/t) were |  | Skirrow, R.G, Camacho, A, Lyons, P, Pieters, P.E, Sims, J.P, Stuart-Smith, P.G, Miró, R (2000) Metallogeny of the southern Sierras Pampeanas, Argentina: geological, 40Ar–39Ar dating and stable isotope evidence for Devonian Au, Ag–Pb–Zn and W ore formation. Ore Geology Reviews, 17 (1) 39-81 doi:10.1016/s0169-1368(00)00004-4 | Journal (article/letter/editorial) | | increasing interest, however, is the potential of the region for precious and base metal mineralization. A large... yet the region remains relatively underexplored. The metallogenic diversity of the region is further...reassess the metallogeny of this historic mining region. 2. Geological setting and tectono-magmatic evolution...up to the 1930s ŽCaminos and Cucchi, 1990.. The region is dominated by pelitic to psammitic gneiss, migmatite...sheared gneiss are characteristically chlorite–hematite-altered and overprint the higher grade biotite |  | | Journal (article/letter/editorial) | | 1•88, pp. 1583-1596 Ore Deposits at the Fresnillo Mine, Zacatecas,Mexico DELFINO C. RUVALCABA-RUIZ PasajeE...surface)level. Introduction hills, Loma de la Fortuna, Cerro Proafio, and Cerro Populo, with reliefs...veins,of which more than 30 ental (Fig. 1). The mine area,immediatelysouthand havebeenmajorore producers...Severalmanto-type southwestof FresnilloCity (Fig. 2), lies in a valley depositsaswell aschimneyandminordisseminated approximately2...Fresnilloand other baseand preciousmetal deposits. The mine maybe dividedinto three zones(Fig. 2): SantaElena |  | O'Neil, J. R., Silberman, M. L., Fabbi, B. P., Chesterman, C. W. (1973) Stable isotope and chemical relations during mineralization in the Bodie mining district, Mono County, California. Economic Geology, 68 (6) 765-784 doi:10.2113/gsecongeo.68.6.765 | Journal (article/letter/editorial) | | of an irregular,faulted, dump of the Red Cloud mine contained galena, north-trendinganticlineintrudedby...Almostall of the quartzveinssampled from dumpsor mine workingsin this study contain at leastsomeadulariathat...intermediatecalc-alkalinevolcanic rocksin the westernborder region of the Basin and Rangeprovince. Metasomatic Effects...theserocksproceeded with increasing degrees from mine workingsand dumpson StandardHill of recrystallization...adjacent to quartz vein (Table 2), Standard Mine, Fortuna vein (20')# (8') (12') (18-) (6(23') (9") |  | | Report (issue) | | element principally sought were listed by the State Mine Inspector of which four actually produced some gold...23 Eureka district................. 23 Hillside mine ~.................................................and Dexter mine................................................................ 25 Cowboy mine........................ 26 Crosby mine 26 Southern Cross mine 27 Mammoth or Hubbard mine..................................... 27 Prescott district 28 Bullwhacker mine................................................ |  | | Journal (article/letter/editorial) | | Chronology of the late Turolian deposits of the Fortuna basin (SE Spain): implications for the Messinian...mammal-bearing alluvial fan–fan delta sequences of the Fortuna basin (SE Spain) has yielded an accurate chronology...Messinian (at least between 6.8 and 5.7 Ma), the Fortuna basin records the sedimentation of alluvial–palustrine...of the evaporitic–diatomitic sequences of the Fortuna basin, as being coeval to the late Messinian salinity...The confinement leading to the emergence of the Fortuna basin occurred in the late Tortonian to earliest |  | | Report (issue) | | ......................... Silver Clip or Blaine mine...................................................Saxon mine................................ .................................... Princess mine............................................... Red Cloud mine.......................................... ............................................ Black Rock mine ......................................................................................... Cibola region............................................... |  | | Report (issue) | | DEPARTMENT OF NATURAL RESOURCES GEOLOGY OF EEL RIVER VALLEY AREA HUMBOLDT COUNTY. CALtFOBNIA BULLETIN 164... BULLETIN 164 NOVEMBER GEOLOGY OF EEL RIVER VALLEY AREA HUMBOLDT COUNTY, CALIFORNIA By BURDETTE ...transmit herewith Bulletin 164, Geology of Eel River Valley Area, Humholdt County, California, prepared under...detailed geologic map covering the Fernclale and Fortuna quadrangles and the northern part of the Scotia...and gravel, crushed rock, volcanic ash, lignite, hematite, and water resources. This report represents |  | | Report (issue) | | aa, 16H7 . t Oretlt. ft /Mm# »f.i Falu copper mine has been continuously mined for more than 900 years...gahnite and långbanite were first recognized in this region and the word skarn (originally having a pejorative...copper was mined from 1644 until recently. The first mine in Finland was the Ojamo iron ore deposit, which...Skellefte district, the Laisvall Pb-mine and the Aitik Cu-Au mine. The sulphide ores in the Outokumpu...associated with intrusive rocks include the Vammala Ni-Cu mine in Finland and the Wigström W deposit in Sweden |  | | Book | | Boring — German (West) — Oberpfalz Region. 2. Earth — pfalz Region. I. Emmermann, R. (Rolf), 1940— . Il...the deep continental crust) Crust. 3. Geology - Germany (West) — OberWohlenberg, Jiirgen, 1933- . III....Springer-Verlag Berlin Heidelberg 1989 Printed in Germany The use of registered names, trademarks, etc....Deep Drilling Program of the Federal Republic of Germany (KTB) would be drilled in the Oberpfalz area...the most ambitious project in the geosciences in Germany. From the beginning, the "Senatskommission fiir |  | Ossandon C., G., Freraut C., R., Gustafson, L. B., Lindsay, D. D., Zentilli, M. (2001) Geology of the Chuquicamata Mine: A Progress Report. Economic Geology, 96 (2) 249-270 doi:10.2113/gsecongeo.96.2.249 | Journal (article/letter/editorial) | | 2001, pp. 249–270 Geology of the Chuquicamata Mine: A Progress Report GUILLERMO OSSANDÓN C., CODELCO-Chile...publications summarize geologic mapping by Anaconda mine geologists and internal reports by W. Lindgren (1917)...discovery in 1957 of the Exótica deposit (now South mine) beneath the oxide tailings dump, and its subsequent...concentrator, smelter, refinery, and town close to the mine, and a power plant at Tocopilla on the coast, and...but detailed Anaconda-style 1:400 scale mapping by mine staff, supported periodically by the Anaconda geologic |  | Barra, Fernando, Alcota, Hugo, Rivera, Sergio, Valencia, Victor, Munizaga, Francisco, Maksaev, Victor (2013) Timing and formation of porphyry Cu–Mo mineralization in the Chuquicamata district, northern Chile: new constraints from the Toki cluster. Mineralium Deposita, 48 (5) 629-651 doi:10.1007/s00126-012-0452-1 | Journal (article/letter/editorial) | | of the Collahuasi Group and intrusions of the Fortuna–Los Picos Granodioritic Complex. Hypogene mineralization...that great efforts are made for exploration of the region. This concentrated exploration effort by many international...Potrerillos, Olson 1989; Marsh et al. 1997; La Fortuna-El Negro, Perelló et al. 1996; Quebrada Blanca-Collahuasi...deposit Mina Sur, the newly developed Ministro Hales mine (formerly known as Mansa Mina) located 5.5 km south...although in the Carmen area, east of the Chuquicamata mine, this unit yielded U–Pb zircon ages of 233.1±2.2 |  | Chiaradia, Massimo, Vallance, Jean, Fontboté, Lluis, Stein, Holly, Schaltegger, Urs, Coder, Joshua, Richards, Jeremy, Villeneuve, Mike, Gendall, Ian (2009) U–Pb, Re–Os, and 40Ar/39Ar geochronology of the Nambija Au-skarn and Pangui porphyry Cu deposits, Ecuador: implications for the Jurassic metallogenic belt of the Northern Andes. Mineralium Deposita, 44 (4) 371-387 doi:10.1007/s00126-008-0210-6 | Journal (article/letter/editorial) | | discontinuous skarn orebodies occur from north to south: Fortuna, Cambana, Campanillas, Nambija, Guaysimi, and Sultana...veins with quartz, K-feldspar, calcite, chlorite, hematite±plagioclase±muscovite, and minor amounts of sulfide...N San Carlos de las Minas Ecuador PiÒon 0˚ Fortuna DTR64, 184 Cordille ra Quito Amazon craton Cambana...Biotite-muscovite schist Sultana del Cóndor Gold prospect and mine Warintza San Carlos Porphyry Cu-Mo and Cu-Au...source (for zircon analyses only) DTR64—Mina Fortuna 1 tit 0.0836 2 tit 0.0810 3 tit 0.1323 4 tit 0 |  | | Journal (issue) | | Famous Mineral Localities: The Erupción/Ahumada Mine, Los Lamentos District, Chihuahua, Mexico ........minrec.org Front Cover WULFENITE from the Ahumada mine, Los Lamentos District, Chihuahua, Mexico; 6.6 cm...gathering around a natural amphitheater amid the mine buildings and headframes in order to hear what we...Mexico-II having been devoted to the famous Ojuela mine). Covered here are four more important and prolific...and Arizona Company, then managed the New Cornelia mine at Ajo with great success. While still working for |  | | Journal (article/letter/editorial) | | oxidation state. This study is based on the Los Picos-Fortuna/Pajonal-El Abra igneous complex, a suite of spatially...of the correlative Los Picos-Fortuna intrusive suite. The Los Picos-Fortuna/ Pajonal-El Abra complex was...porphyries and now mantle the greater part of the region (Boric et al. 1990; Maksaev et al. 1994; Maksaev...Dilles et al. 1997; McInnes et al. 1999). Los Picos-Fortuna and Pajonal-El Abra igneous suites Fig. 1 Map...showing the approximate outline of the Los Picos-Fortuna and Pajonal-El Abra igneous suites, the Chuquicamata |  | | Journal (article/letter/editorial) | | porosity are greater in the Upper Oxide unit, whereas hematite, chalcocite, and molybdenite concentrations and...located beneath a flat desert valley about 5 km north of the Chuquicamata mine and 40 km north of the town...town of Calama in the Antofagasta region of northern Chile (Fig. 1), at an elevation of 3,000 m above sea...metallurgical testing. The geologic model that supported the mine project included all the information generated during... Operations began on April 1, 1996, and now the mine is in full production, at an optimized capacity |  | | Report (issue) | | mineral localities, with the minerals found at each mine or locality. Most mining districts and mineral localities...whole, along with those for which the specific area (mine, for instance) is not known. Other minerals, however...Mountains). Bradshaw District (Mineral Range). Fortuna District (Tushar Mountains). Gordon District (Tushar...Newfoundland District (Newfoundland Mountains). Park Valley District (Raft River Mountains). Promontory District...(Mt. Escalante). Gold Springs District (Hamlin Valley). Iron Springs District (Iron and Granite Mountains |
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