 | | Journal (article/letter/editorial) | | mineralization in sheet-like intrusions of the Duluth Complex RI are characterized by elevated bulk rock...River and South Kawishiwi Intrusions of the Duluth Complex, as well as sulfide mineralization in geometrically... MA the Eagle Intrusion and Tamarack Igneous Complex. These intrusions were emplaced during early stages...sulfide mineralization in intrusions of the Duluth Complex range from -0.85 to 0.45 ‰ whereas values from...from the Eagle Intrusion and the Tamarack Igneous Complex range from 0.69 to 1.84 ‰. 65Cu values of the |  | Czamanske, Gerald K., Bennett, Pauline C., Zientek, Michael L., Weiblen, Paul W., Havach, George A., Foose, Michael P. (1986) Comprehensive bibliographies on mineralized and unmineralized layer mafic intrusions in the United States. Open-File Report Vol. 1986 (86-589) US Geological Survey doi:10.3133/ofr86589a | Report (issue) | | California. Department of Geology, University of Minnesota, Minneapolis *U.S. Geological Survey, Res ton...Weiblen, Department of Geology, University of Minnesota These bibliographies have been compiled at the...prospector with potential. The Duluth Complex, Minnesota, and the Stillwater Complex, Montana, are given separate...the United States. The bibliography on the Duluth Complex and related Keweenawan intrusions includes...references cited in Minnesota Geological Survey Bulletin 46, entitled "Bibliography of Minnesota Geology, 1951-1980 |  | | Journal (article/letter/editorial) | | Copyright © 1999 Elsevier Science Ltd Printed in the USA. All rights reserved 0016-7037/99 $20.00 1 .00 Pergamon...metasedimentary rocks located beneath the Duluth Complex, Minnesota YOUNG-ROK PARK,1 EDWARD M. RIPLEY,*,1...47405, USA Minnesota Natural Resources Research Institute, University of Minnesota, Duluth, Duluth, MN 55811...55811, USA 2 (Received July 6, 1998; accepted in revised form February 11, 1999) Abstract—Thin (3–20...metasedimentary footwall rocks of the Duluth Complex, Minnesota. The sills were emplaced prior to the |  | | Journal (article/letter/editorial) | | Survey, National Center-MS 954, Reston, VA 22092, USA (Received October 10, 1990; accepted after revision...1 ) native copper deposits in basalts and interflow sediments; (2) sediment-hosted copper sulfide and...and native copper; (3) copper sulfide veins and lodes hosted by rift-related volcanic and sedimentary rocks;...hydrothermal sulfides occur (i.e., shale-hosted copper sulfides), the source of sulfur was local sedimentary...and include Cu-Ni-PGE and Ti-Fe (V) in the Duluth Complex, U-REE-Nb in small carbonatites, and breccia |  | | Journal (article/letter/editorial) | | River and South Kawishiwi intrusions of the Duluth Complex occurs in a variety of rock types, all produced...mineralization in the sheet-style intrusions of the Duluth Complex are related in part to sequestration of Ni...The disseminated sulfide occurrences of the Duluth Complex have been known for many years (e.g., Johnson...Ni-Cu-PGE mineralization found in the Duluth Complex of Minnesota and the Eagle deposit of Michigan (Fig...of the Marathon deposit found in the Coldwell Complex is described by Good and Crockett (1994). Bakheit |  | Benko, Z., Mogessie, A., Molnar, F., Severson, M. J., Hauck, S. A., Rai , S. (2015) Partial Melting Processes and Cu-Ni-PGE Mineralization in the Footwall of the South Kawishiwi Intrusion at the Spruce Road Deposit, Duluth Complex, Minnesota. Economic Geology, 110 (5) 1269-1293 doi:10.2113/econgeo.110.5.1269 | Journal (article/letter/editorial) | | Intrusion at the Spruce Road Deposit, Duluth Complex, Minnesota Zsolt Benkó,1,† Aberra Mogessie,1 Ferenc...Resources Research Institute, University of Minnesota, Duluth, Minnesota 55811 Abstract A strong relationship...sulfide deposit (South Kawishiwi intrusion, Duluth Complex) between the contact metamorphic processes...intrusions in the Mesoproterozoic (1.1 Ga) Duluth Complex has been the target of extensive mineral exploration...cumulative resources of 24 million metric tons (Mt) of copper with 0.6 wt % average grade, and 8 Mt of nickel |  | | Journal (article/letter/editorial) | | origin of Cu–Ni sulfide mineralization in the Duluth Complex, midcontinent rift system Edward M. Ripley...25 January 2007 Springer-Verlag 2007 Abstract Copper–nickel sulfide mineralization in the Partridge...Partridge River Intrusion of the 1.1 Ga Duluth Complex is restricted primarily to a 100 m thick zone near the...Sciences, Indiana University, Bloomington, IN 47405, USA e-mail: ripley@indiana.edu Present Address: N. I...the earliest stages in the development of the Duluth Complex at a time when volatile species such as S and |  | Taranovic, Valentina, Ripley, Edward M., Li, Chusi, Rossell, Dean (2015) Petrogenesis of the Ni–Cu–PGE sulfide-bearing Tamarack Intrusive Complex, Midcontinent Rift System, Minnesota. Lithos, 212. 16-31 doi:10.1016/j.lithos.2014.10.012 | Journal (article/letter/editorial) | | sulfide-bearing Tamarack Intrusive Complex, Midcontinent Rift System, Minnesota Valentina Taranovic a,⁎, Edward...Rio Tinto Exploration (Kennecott Exploration), Duluth, MN 55810, United States a r t i c l e i n f...Intrusive Complex Midcontinent Rift System a b s t r a c t The Tamarack Intrusive Complex (TIC, 1105...1105.6 ± 1.2 Ma) in NE Minnesota, was emplaced during the early stages of the development of the Midcontinent...olivine in the sheet-like intrusions in the Duluth Complex (below Fo70), as well as olivine from the smaller |  | | Journal (article/letter/editorial) | | Element Contents and Biotite Compositions of Duluth Complex Troctolitic and Anorthositic Series Rocks B...Geology and Geophysics, University of Minnesota, Minneapolis, Minnesota, U.S.A., 2 Mineral Resources Research...Research Center, University of Minnesota, Minneapolis, Minnesota, U.S.A., 3 Reactor Research Facility, University...biotites in anorthositic series rocks from the Duluth Complex. The data are contrasted with similar data...variation of F/C1 ratios with Fe-Mg compositions of Duluth Complex magmatic biotites may be interpreted to imply |  | Benkó, Zsolt, Mogessie, Aberra, Molnár, Ferenc, Hauck, Steven, Severson, Mark, Ettinger, Karl (2018) The Influence of Thermal Differences and Variation of Cl–F–OH Ratios on Cu-Ni-PGE Mineralization in the Contact Aureole of the South Kawishiwi Intrusion, Duluth Complex. Geosciences, 8 (12) 474 doi:10.3390/geosciences8120474 | Journal (article/letter/editorial) | | Contact Aureole of the South Kawishiwi Intrusion, Duluth Complex Zsolt Benkó 1,2, *, Aberra Mogessie 2 , Ferenc...University of Minnesota, 5013 Miller Trunk Highway Duluth, Minneapolis, MN 55811-1442, USA; shauck@nrri...Abstract: In the contact metamorphic aureole of the Duluth Complex, Cu-Ni-PGE mineralization occurs locally up...sulfide liquid into the footwall. Keywords: Duluth Complex; South Kawishiwi intrusion; Cu-Ni-PGE mineralization;...metamorphic zones, such as in Bushveld Complex, South Africa; Portimo Complex, Finland; and East Bull Lake Intrusive |  | | Journal (article/letter/editorial) | | Copyright © 1995 Elsevier Science Ltd Printed in the USA. All rights reserved 0016-7037/95 $9.50 + .00 Pergamon...0016-7037(95)00387-8 SCIENTIFIC C O M M E N T Solubility of copper in a sulfur-free mafic melt EDWARD M. RIPLEY and...Sciences, Indiana University, Bloomington, IN 47405, USA (Received June 26, 1995; accepted in revisedform...= - 1 1 . 9 to 1.10 wt% at log fo2 = - 7 . 4 . Copper solubilities were in excess of 8 wt% in two runs...dissolves predominantly in the + 1 valence state. Copper solubility decreases with increasing temperature |  | | Journal (article/letter/editorial) | | CONCENTRATIONS IN COUNTRY ROCKS FROM THE DULUTH COMPLEX, MINNESOTA, USA: IMPLICATIONS FOR FORMATION OF THE...S, and δ34S on the magmatic sulfides of the Duluth Complex and on the host-rock sediments of the Virginia...sulfides zones found at the margins of the Duluth Complex, Minnesota (Fig. 1) provide an opportunity to study...have been drilled across the contact between the complex and the country rock, thus offering the possibility...sampling and study. A number of studies of the Duluth Complex have recognized that the source of S that contaminated |  | Taranovic, Valentina, Ripley, Edward M., Li, Chusi, Rossell, Dean (2016) Chalcophile element (Ni, Cu, PGE, and Au) variations in the Tamarack magmatic sulfide deposit in the Midcontinent Rift System: implications for dynamic ore-forming processes. Mineralium Deposita, 51 (7) 937-951 doi:10.1007/s00126-016-0643-2 | Journal (article/letter/editorial) | | sulfide deposit is hosted by the Tamarack Intrusive Complex (1105.6 ± 1.2 Ma) in the Midcontinent Rift System...The most important sulfide mineralization in the Complex occurs in the northern part, which consists of...Bloomington, IN 47405, USA 2 Rio Tinto Exploration (Kennecott Exploration), Duluth, MN 55810, USA platinum-group...intrusions of the Duluth Complex. Regional geology Introduction The Tamarack Intrusive Complex (TIC) occurs...occurs to the southwest of the Duluth Complex (Fig. 1) and crystallized during the early stages in the development |  | Raič, Sara, Mogessie, Aberra, Benkó, Zsolt, Molnár, Ferenc, Hauck, Steven, Severson, Mark (2015) ARSENIC-RICH Cu-Ni-PGE MINERALIZATION IN WETLEGS, DULUTH COMPLEX, ST. LOUIS COUNTY, MINNESOTA, USA. The Canadian Mineralogist, 53 (1) 105-132 doi:10.3749/canmin.1400053 | Journal (article/letter/editorial) | | MINERALIZATION IN WETLEGS, DULUTH COMPLEX, ST. LOUIS COUNTY, MINNESOTA, USA SARA RAIȧ AND ABERRA MOGESSIE...SEVERSON NRRI, University of Minnesota, 5013 Miller Trunk Highway, Duluth MN 55811, U.S.A ABSTRACT The...River intrusion (PRI) of the 1.1 Ga Duluth Complex (northeastern Minnesota) contains disseminated low-grade...chalcopyrite, pentlandite, and cubanite. Secondary copper-bearing sulfide minerals (bornite, covellite, yarrowite...alteration. INTRODUCTION The Duluth Complex in northeastern Minnesota (USA) is the major intrusive unit |  | Gál, Benedek, Molnár, Ferenc, Guzmics, Tibor, Mogessie, Aberra, Szabó, Csaba, Peterson, Dean M. (2013) Segregation of magmatic fluids and their potential in the mobilization of platinum-group elements in the South Kawishiwi Intrusion, Duluth Complex, Minnesota — Evidence from petrography, apatite geochemistry and coexisting fluid and melt inclusions. Ore Geology Reviews, 54. 59-80 doi:10.1016/j.oregeorev.2013.03.001 | Journal (article/letter/editorial) | | elements in the South Kawishiwi Intrusion, Duluth Complex, Minnesota – evidence from petrography, apatite geochemistry...elements in the South Kawishiwi Intrusion, Duluth Complex, Minnesota – evidence from petrography, apatite geochemistry...elements in the South Kawishiwi Intrusion, Duluth Complex, Minnesota – evidence from petrography, apatite geochemistry...Graz, Austria; Duluth Metals Limited, 306 West Superior Street, Suite 610, Duluth, MN 55802, U.S.A...abundant in the South Kawishiwi Intrusion of the Duluth Complex, including the basal, Cu-Ni-PGE mineralized |  | Park, Y.-R., Ripley, E. M., Miller, J. D., Li, C., Mariga, J., Shafer, P. (2004) Stable Isotopic Constraints on Fluid-Rock Interaction and Cu-PGE-S Redistribution in the Sonju Lake Intrusion, Minnesota. Economic Geology, 99 (2) 325-338 doi:10.2113/gsecongeo.99.2.325 | Journal (article/letter/editorial) | | Cu-PGE-S Redistribution in the Sonju Lake Intrusion, Minnesota YOUNG-ROK PARK,* EDWARD M. RIPLEY,† Indiana University...MILLER, JR., Minnesota Geological Survey, 2646 University Avenue West, St. Paul, Minnesota 55114-1057 ...the 1.1 Ga Midcontinent rift-related Beaver Bay Complex, is a 1,200-mthick, strongly differentiated, layered...sequence of mafic cumulates located in northeastern Minnesota. Basal melatroctolite and dunite layers are overlain...confined to the lowermost 25 m of the interval. Copper shows a sharp increase to 630 ppm above the Pd-rich |  | Mogessie, A., Stumpfl, E. F., Weiblen, P. W. (1991) The role of fluids in the formation of platinum-group minerals, Duluth Complex, Minnesota; mineralogic, textural, and chemical evidence. Economic Geology, 86 (7) 1506-1518 doi:10.2113/gsecongeo.86.7.1506 | Journal (article/letter/editorial) | | Fluidsin the Formationof Platinum-GroupMinerals,Duluth Complex,Minnesota:Mineralogic,Textural, and ChemicalEvidence...Departmentof Geologyand Geophysics, Universityof Minnesota,Minneapolis55455 Abstract Severalnew occurrencesof...drill core samplesof the basaltroctolitesof the Duluth Complex.The first documentationof a vanadium-chromiumhercynite...graphite-richsamplesof the mineralizedzone of the Duluth Complexis alsoreported. The PGM are associated... and Duluth Complexes arecalculated fromthePGEdatacompiled by Barneset al. (1985). The Duluth Compl |  | | Journal (article/letter/editorial) | | Copyright © 1999 Elsevier Science Ltd Printed in the USA. All rights reserved 0016-7037/99 $20.00 ⫹ .00 Pergamon...Volcanic Group and Related Hypabyssal Sills, Minnesota YOUNG-ROK PARK and EDWARD M. RIPLEY* Department...Indiana University, Bloomington, IN 47405-1403, USA (Received September 14, 1998; accepted in revised...(NSVG) are intruded by plutonic rocks of the Duluth Complex along the unconformity between the NSVG and...chambers, now represented by intrusions of the Duluth Complex, created a dynamic geological environment conducive |  | | Journal (article/letter/editorial) | | nickel-copper deposits: Example from the Partridge River Intrusion, Duluth Complex, Minnesota, USA N. Samalens...nickel-copper deposits: Example from the Partridge River Intrusion, Duluth Complex, Minnesota, USA, Ore...nickel-copper deposits: Example from the Partridge River Intrusion, Duluth Complex, Minnesota, USA. 1 ...MANUSCRIPT Abstract The basal unit of the Duluth Complex (Minnesota, USA) contains Ni-Cu sulfide deposits. The...mainly from PT mafic magma. RI Keywords. Duluth Complex; Proterozoic black shales; in-situ contamination; |  | Benkó, Zsolt, Mogessie, Aberra, Molnár, Ferenc, Krenn, Kurt, Poulson, Simon R., Hauck, Steven, Severson, Mark, Arehart, Greg B. (2015) Hydrothermal alteration and Cu–Ni–PGE mobilization in the charnockitic rocks of the footwall of the South Kawishiwi intrusion, Duluth Complex, USA. Ore Geology Reviews, 67. 170-188 doi:10.1016/j.oregeorev.2014.11.010 | Journal (article/letter/editorial) | | footwall of the South Kawishiwi intrusion, Duluth Complex, USA Zsolt Benkó a,⁎, Aberra Mogessie a, Ferenc... NV 89557-0138, USA d Natural Resources Research Institute, University of Minnesota, 5013 Miller Trunk...Trunk Highway, Duluth, MN 55811-1442, USA b a r t i c l e i n f o Article history: Received 19 February...Available online 3 December 2014 Keywords: Duluth Complex South Kawishiwi intrusion Charnockite Hydrothermal...Mesoproterosoic (1.1 Ga) South Kawishiwi intrusion of the Duluth Complex, the primary metamorphic mineral assemblage |  | | Journal (article/letter/editorial) | | Rift-Related Echo Lake Intrusion in Northern Michigan, USA Alexander James Koerber and Joyashish Thakurta *...University, 1903 W Michigan Ave, Kalamazoo, MI 49008, USA; alexander.j.koerber@wmich.edu * Correspondence:...intrusion in the Upper Peninsula (UP) of Michigan, USA, was formed during the 1.1 Ga Midcontinent Rift event...deposits, such as the Sonju Lake deposit in northern Minnesota. Keywords: Echo Lake; Midcontinent; palladium;...mafic-ultramafic intrusive bodies of the Duluth Complex in northern Minnesota have been identified and studied |  | | Journal (article/letter/editorial) | | Dakota State University, Fargo, ND, 58105-5517, USA NIKOLAI S. RUDASHEVSKY Mechanobr Technical Corporation...associated with platinum-group minerals in the Noril'sk Complex, and with the Korshunovskoye iron ores of the southern...is up to 100 ~tm. Hibbingite from the Noril'sk Complex contains a significant kempite (Mn2(OH)3CI) component;...hibbingite, kempite, solid solution, Noril'sk complex, Korshunovskoye iron ores, platinum-group mineral...associated with platinum-group minerals in the Noril'sk Complex, and with the Korshunovskoye iron ores of the southern |  | | Journal (article/letter/editorial) | | in the Duluth complex occurs in troctolitic intrusions along the western margin of the complex as a result...although Noril'sk ore contains signi®cantly more copper than does Sudbury, and the PGE:Ni ratio is more...the value of the mineralisation is far greater. Duluth represents a major Ni resource, but the low grade...(1990); those for Noril'sk are an estimate only; for Duluth are from Listerud and Meineke (1977); for Jinchuan...the 1.334 Ga (Amelin et al. 1997) Voisey's Bay complex. This is a member of the Nain Plutonic Suite (1 |  | | Journal (article/letter/editorial) | | AND CONCENTRATION MECHANISMS OF COPPER AND NICKEL IN DULUTH COMPLEX SULFIDE ZONES--A EDWARD DILEMMA...magma.Several researchers(Weiblen and Morey, The Duluth Complexof northeasternMinnesota 1976; Mainwaring...Hostrocksare H2S is generallyapplicableto the Duluth Complex. generallyclassified astroctoliteor, occasionally... an imtionsregardingCu-Ni mineralizationin the Duluth misciblesulfideliquid wasnot importantfor sulfide...mineralization found in the Duluth (RipleyandWatowich,1982; RipleyandA1-Jassar, in Complex(Fig. 1) is disseminated |  | | Report (issue) | | MINNESOTA GEOLOGICAL SURVEY PRISCILLA C. GREW, DIRECTOR BULLETIN 47 BIBLIOGRAPHY OF MINNESOTA GEOLOGY...UNIVERSITY OF MINNESOTA ST. PAUL· 1987 ISSN 0076-9169· ISBN 0-934938-02-04 The University of Minnesota is committed...references to the geologic literature on the State of Minnesota issued from 1981 through 1985, as well as omissions...omissions from the previous two bibliographies of Minnesota geology: Bulletin 34 (published in 1951), with...sources; usage in the index reflects current Minnesota Geological Survey style. The last bibliography |
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