 | | Journal (article/letter/editorial) | | Genesisof Cu-Ni Sulfidcs in the Water Hen Intrusion,Duluth Complex,Minnesota P. R. MAINWARINGANDA. J. NALDRETT...NALDRETT Abstract The Water Hen intrusion is a small (2 miles long, 1 mile wide) body of layered rocks...portion of the Duluth Complex, near Hoyt Lakes, Minnesota. Cyclical units of mineral-gradedlayers are well...anorthositic eral-gradedlayerssimilarto thosein the Water Hen troctolite, and gabbros. The Bald Eagle, South...smallandfunnel-shaped or are partsof largerpoorly ter Hen intrusion and the intrusive bodies to the definedintrusivecomplexes |  | | Journal (article/letter/editorial) | | Copyright Ā© 2000 Elsevier Science Ltd Printed in the USA. All rights reserved 0016-7037/00 $20.00 ā«¹ .00 Pergamon...AbstractāIn order to better understand the behaviour of nickel in magmatic processes, we have measured the apparent...temperature range 1200 to 1400Ā°C and with 5 to 50 wt.% nickel in the sulphide liquid. Measured values of K D...sulphur fugacity, but increase linearly with the nickel content of the sulphide liquid, and follow a power-law...of f O2 and f S2. The variation of K D with melt nickel content and f O2 is most likely the result of nonideal |  | | Journal (article/letter/editorial) | | and G. B. MOREY Minnesota Geological Survey, 1633 Eustis Street, Saint Paul, Minnesota 55108 ABSTRACT...and from there east-northeast toward Hovland, Minnesota (fig. 1). The complex is underlain to the west...Although the Keweenawan rocks in northeastern Minnesota provide an excellent view of a more or less complete...Gunflint corridor. (E) E-\V cross section across the Water Hen Intrusion 20 km south of Hoyt Lakes. Modified...Department of Geology and Geophysics, Cniversity of Minnesota. Analyses of samples from the Gunflint corridor |  | | Journal (article/letter/editorial) | | 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...extending from Duluth to the northeastern tip of Minnesota (Weiblen and Morey, 1980; Weiblen et al., 1989;...basal rocks, presumably products of silica and water enrichment due to country rock assimilation. Mineral...well-defined (e.g., the Bald Eagle, Sonju Lake and Water Hen intrusions, Figs. 1 and 3). A model of the rift-related |  | | Journal (article/letter/editorial) | | systematic variations in Fe-Ni partitioning with sulfide nickel content. In light of the recent experimental results...oxygen (fO 2) and sulfur (fS 2). In principle, the nickel content of olivine coexisting with a sulfide liquid...linear function of the nickel content of the sulfide liquid and at constant nickel content follow a power...MacRae (1987), in that each involved different nickel contents in the sulfide liquid. Moreover, given...given the dependence of KD on fO 2 and sulfide nickel content, the large range of KD values measured in olivine- |  | | Journal (article/letter/editorial) | | the Dunka Road Cu-Ni Deposit, Duluth Complex, Minnesota EDWARD M. RIPLEY Department of Geology,Indiana...sulfidesfrom the Water Hen intrusionand underlying Virginia Formation (ā¢p4s--11.0 to 18.8%0). The Water Hen intrusionis...Precambrā¢on FlO. l. Generalized bed-rock geology of Minnesota (after Cooperet al., in press)showinglocationof...indicative of an external addition of alkalis, water, or silicathat sulfideconcentrations are highest...bn--bornite, py--pyrite. is also near that of the nickel-nickel oxide buffer ex2Hornfels= metamorphosed Vir |  | | Journal (article/letter/editorial) | | if heated(French, 1966, 1968). Iron, copper,and nickel sulfidesoccur mostly as As a result of the program..., 1974, Copper and nickel resources in the Duluth Complex, northeastern Minnesota: Minn. Geol. to mineralsrich...of the Biwabik Iron Formation, Mesabi Range, Minnesota: Minn. Geol. Survey Bull. 45, 103 p. Graeber,...COMMUNICATIONS rocks in St. Louis and Lake Counties, northeastern Minnesota: Hibbing, Minn. Dept. Nat... A. J., 1977, County rock assimilationand the genesisof Cu-Ni sulfidesin the Water Hen intrusion, Duluth |  | | Report (issue) | | BIBLIOGRAPHY OF MINNESOTA 1951-1980 GEOLOGY ves ai Ć© Lita: ae i if āPe va MINNESOTA GEOLOGICAL...DIRECTOR BULLETIN BIBLIOGRAPHY SURVEY 46 OF MINNESOTA GEOLOGY 1951-1980 COMPILED G.B. MOREY, NANCY... BY BALABAN, AND LYNN Gn UNIVERSITY OF MINNESOTA ST. PAUL e 1981 SWANSON ISSN 0076-9169 @ ISBN...ISBN 0-934938-01-6 The University of Minnesota is committed to the policy that all persons shall have...bibliography brings Minnesota Geological Survey Bulletin 34, āāBibliography of Minnesota Geology,āā by T |  | | Report (issue) | | MINNESOTA GEOLOGICAL SURVEY PRISCILLA C. GREW, DIRECTOR BULLETIN 47 BIBLIOGRAPHY OF MINNESOTA GEOLOGY...UNIVERSITY OF MINNESOTA ST. PAULĀ· 1987 ISSN 0076-9169Ā· 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 |  | | Journal (article/letter/editorial) | | Copyright Ā© 2003 Elsevier Science Ltd Printed in the USA. All rights reserved 0016-7037/03 $30.00 ā«¹ .00 Pergamon...fugacities. KD values show an increase with the nickel content of the sulfide liquid, but this effect...as arising from variations in fO2, fS2, and the nickel content of the sulfide liquid. Estimates of fO2...decreasing 1. INTRODUCTION Numerous studies have used nickel partitioning between olivine and sulfide liquid...The reaction that describes the partitioning of nickel between olivine and an iron and sulfur-rich, oxygen-poor |  | 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...F or G 4- F where A B C D E F G = = = = = = = nickel or cobalt or platinum or pentlandite mineralization...prospector with potential. The Duluth Complex, Minnesota, and the Stillwater Complex, Montana, are given...references cited in Minnesota Geological Survey Bulletin 46, entitled "Bibliography of Minnesota Geology, 1951-1980 |  | | Journal (article/letter/editorial) | | the Partridge River Troctolite, Duluth Complex, Minnesota Norman K. Grant and Philip A. Molling* Department...of Geology, Miami University, Oxford, Ohio 45056 USA Abstract. Initial STSr/S6Sr ratios down a 2,315...Terrace East, Suite 200, Englewood, Colorado 80112, USA * Present Address: Of]~rint requests to." N.K...core DDH-295 is Sec. 32, T 60~ R II~ in St. Louis CO., Minnesota. The coordinates on the MINNAMAX Grid...method are - 0 . 6 % and 1.5%, respectively. Zr, Y, St, Rb, Zn, Cu, and Ni also were determined by XRFS |  | | Journal (article/letter/editorial) | | Department of Geological Sciences, 100 East 10th St., Indiana University, Bloomington, Indiana 47405...mineralization found in the Duluth Complex of Minnesota and the Eagle deposit of Michigan (Fig. 1). Reviews...Lake area of Figure 2 EGS 1107 intrusion Minnesota NSVG PLV e1069-1094 LST 1087 PD Sup Ontario...Bay Complex, CC = Coldwell Complex, CCD = Carlton County dikes, DC = Duluth Complex, EGS = Early Gabbro...of this type have been identified in Michigan, Minnesota, and the Lake Nipigon area of Ontario (Fig.1) |  | Taranovic, Valentina, Ripley, Edward M., Li, Chusi, Rossell, Dean (2015) Petrogenesis of the NiāCuāPGE 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) | | Intrusive Complex, Midcontinent Rift System, Minnesota Valentina Taranovic a,ā, Edward M. Ripley a,1...Intrusive Complex (TIC, 1105.6 Ā± 1.2 Ma) in NE Minnesota, was emplaced during the early stages of the development...Element (PGE) occurrences in the Duluth Complex of Minnesota, the principal exposed plutonic portion of the... PMG 1105.6 w na ee MPF w South DAKOTA MINNESOTA IOWA WISCONSIN ILLINOIS Eagle intrusion 1107...Deposit CCD 300 Km B PD La ek Michigan Minnesota LS intrusion 1109 ift Crystal Lake EGS 1107 |  | | Journal (article/letter/editorial) | | CONCENTRATIONS IN COUNTRY ROCKS FROM THE DULUTH COMPLEX, MINNESOTA, USA: IMPLICATIONS FOR FORMATION OF THE Cu-Ni-PGE...zones found at the margins of the Duluth Complex, Minnesota (Fig. 1) provide an opportunity to study how S...Ontario Sup erio e r DULUTH COMPLEX Lak CANADA USA Duluth 0 500 km G RE NV IL L E F RONT U.S.A...Kawishiwi intrusion. Ni-Cu-PGE mineralization: (1) Water Hen; (2) Wyman Creek; (3) Wetlegs; (4) Dunka Road...obtained from boreholes at Wetlegs, Wyman Creek, and Water Hen. The xenoliths and rocks surrounding the xenoliths |  | | Journal (article/letter/editorial) | | the Partridge River Intrusion, Duluth Complex, Minnesota ROBERT D. THĆRIAULT,ā ,* SARAH-JANE BARNES, DĆ©partement...Resources Research Institute, University of Minnesota, Duluth, Minnesota 55811 Abstract Four subeconomic Cu-Ni-PGE...circles represent CuNi-PGE sulfide deposits (1 = Water Hen; 2 = Wyman Creek; 3 = Wetlegs; 4 = Dunka Road;...Company, 9 = Department of Natural Resources, Minnesota, 10 = ThĆ©riault et al., 1997 Tiger Boy. The strong...Acknowledgments The authors thank Steven Hauck of the Minnesota Natural Resources Research Institute for his collaboration |  | | Journal (article/letter/editorial) | | AT THE BABBITT Cu-Ni DEPOSIT, DULUTH COMPLEX, MINNESOTA, U.S.A. EDWARD Department of M. RIPLEY Geology...rocks at the Babbitt Ni deposit, Duluth Complex, Minnesota, U.S.A. Chem. Geol. (Isot. Geosci. Sect.), 73:...were analyzed. Samples from drillhole 2 of the Minnesota Deep Drilling project (MDDB, Fig. 1) were collected...Virginia Formation in the Gunflint Lake area in Minnesota) analyzed by H. Strauss (in prep. ) have 613C-values...dehydration progresses the fluid phase becomes richer in water, until a maximum H,O is reached. Although complications |  | | Journal (article/letter/editorial) | | diameter a b o u t 75 gin) and washed in distilled water, whereas that o f runs OP22 a n d OP23 is < 4 0...10 to 15 min in a solution o f 10 ml distilled water, 30 to 40 ml concentrated hydrochloric acid and...grains were washed several times with distilled water, dried, m o u n t e d in epoxy on a glass side a...sulfide-rich basal duuite of the Water Hen intrusion, Duluth complex, Minnesota (Mainwaring and Naldrett 1977)...disseminated N i - C u sulfide ore from the Great Lakes Nickel intrusion, Pardee township, Ontario (analysed at |  | | Journal (article/letter/editorial) | | ORIGIN AND CONCENTRATION MECHANISMS OF COPPER AND NICKEL IN DULUTH COMPLEX SULFIDE ZONES--A EDWARD DILEMMA...press).Massive Discussionof the Origin of Copper and Nickel sulfidemineralization israreandis of majorsignifiq...resentative of a previousin- nismof copper and nickel enrichment(0.35-1.0% trusivefloor,an interpretationthat...thezones.Mineralogy ofthedeposits isnor- of copper and nickel as to be able to producethe mallysimple,withpyrrhotite...suchzonesindicatesthatthe development of copper-nickel-enriched areasis stronglylinked to sulfideevolution |  | RaiÄ, Sara, Mogessie, Aberra, BenkĆ³, Zsolt, MolnĆ”r, 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 RAIÄĀ§ AND ABERRA MOGESSIE ...HAUCK AND MARK SEVERSON NRRI, University of Minnesota, 5013 Miller Trunk Highway, Duluth MN 55811, U...(PRI) of the 1.1 Ga Duluth Complex (northeastern Minnesota) contains disseminated low-grade Cu-Ni sulfide...INTRODUCTION The Duluth Complex in northeastern Minnesota (USA) is the major intrusive unit of the 1.1 Ga...107 FIG 1. (a) Geologic map of northeastern Minnesota (modiļ¬ed from Miller et al. 2001) showing footwall |  | | Report (volume) | | cooperation with the Missouri Geological Survey and Minnesota Geological Survey Geology and Metallogeny of... Missouri Geological Survey, and G.B. MOREY, Minnesota Geological Survey Prepared in cooperation with...with the Missouri Geological Survey and Minnesota Geological Survey A description of major known and potential...cooperation with the Missouri Geological Survey and Minnesota Geological Survey." Bibliography: p.42 Supt. of... G. B. Ill. Missouri. Geological Survey. IV. Minnesota Geological Survey. V. Title. VI. Series. VII. |  | | Journal (article/letter/editorial) | | RockInteraction, Babbitt Cu-Ni Deposit, Duluth Complex,Minnesota EDWARDM. RIPLEYAND TamQ J. AL-JASSAR GeologyDepartment..., North Shore Volcan cGroup ā¢,:' . 'ā¢..ā¢.WATER HEN North Shore ,""1 Volcanic Group..ā¢J FIG. 1...(Sudbury)deposit,but it is not charac- andWater Hen deposits. teristicof all magmaticdeposits.It shouldbe...hornfels, Dunka Road, Ripley 1981 V.F.hornfels, Water Hen,Mainwaring andNaldrett 1977 V.F.hornfels, Babbitt...maybe addedto the melt from dehydrationwaters. If water dissolves aseither OH- (Burnham,1975) or H20 (Stolper |  | | Journal (article/letter/editorial) | | (1979) have pointedthis out, using the caseof a Water Hen intrusionof the Duluth complex (Main- classic...ores,by Mainwaring and Naldrett (1977) for the Water Hen oresat XmDSm/Xā¢(R q- 1) Duluth, and by Naldrett...present---exactly depositsat $udbury, thoseof the Ungava nickel belt the rangeof olivinecompositions actuallypresentin...partitioning "make the liquid immiscibility hypothesisfor nickel sulfide genesisappearuntenable" the major part...net-texturedore, and the overlyingbilliard balls in water corresponded to the peridotiteoverlying the ore |  | | Journal (article/letter/editorial) | | Complex, Minnesota E.M. Ripley Depa~ment of Geology, Indiana Univemi~, Bloomington, Indiana, USA The Deer...Deer Lake Complex, located in north-central Minnesota, consists of a series of layered peridotite-pyroxenite-gabbro...Viljoen, ]970). Similar sills found in northern Minnesota have recently been described by Schulz (1977)...a series of layered sills exposed near Effie, Minnesota (Fig. I), and collectively known as the Deer Lake...Pig. 1. Regional geologic map of northeastern Minnesota, showing location of the Deer Lake Complex. Most |  | | Journal (article/letter/editorial) | | magmatic nickel-copper deposits: Example from the Partridge River Intrusion, Duluth Complex, Minnesota, USA...magmatic nickel-copper deposits: Example from the Partridge River Intrusion, Duluth Complex, Minnesota, USA...magmatic nickel-copper deposits: Example from the Partridge River Intrusion, Duluth Complex, Minnesota, USA...Abstract The basal unit of the Duluth Complex (Minnesota, USA) contains Ni-Cu sulfide deposits. The S PT...Mesoproterozoic (1100 Ma) mafic complex located in Minnesota, TE USA. It consists of a number of mafic intrusions |
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