 | | Report (issue) | | Geology and Ore Deposits of the Cuyuna North Range Minnesota GEOLOGICAL SURVEY PROFESSIONAL PAPER 407 ... Geology and Ore Deposits of the Cuyuna North Range Minnesota By ROBERT GORDON SCHMIDT GEOLOGICAL SURVEY ...1924Geology and ore deposits of the Cuyuna North range, Minnesota. Washington, U.S. Govt. Print. Off., 1963. v,...Bibliography: p. 87-91. l.Geology Minnesota Cuyuna North range. 2.Ore-deposits Minnesota Cuyuna North Range. S.Iron...Iron ores Minnesota Cuyuna North range. I.Title: The Cuyuna North range, Minnesota. (Series) For sale |  | | Journal (article/letter/editorial) | | EpigeneticManganeseDepositsin Iron-Formationof the Emily District, CuyunaIron Range,East-CentralMinnesota G....Minnesota55114 Abstract Early Proterozoicstrataof the Emily districtat the far northernend of the Cuyunairon...Animikiebasinin east-centralMinnesota.As such,the rocksof the Emily districtare correlativewith strataof the well-knownAnimikie...monoclinalnatureof the MesabiRange, stratain the Emily districtare deformedinto a seriesof broad,open,eastward-plunging...gdistrictsin TI•ECuyuna range ineast-central Minnesota (Fig.1) the Lake Superiorregion.The rangestillcontainsan |  | | Report (issue) | | STRUCTURE OF THE MESABI RANGE, MINNESOTA UNIVERSITY OF MINNESOTA MINNESOTA GEOLOGICAL SURVEY GEORGE M...Mesabi Range, Minnesota BY DAVID A. WHITE MINNEAPOLIS • 1954 THE UNIVERSITY OF MINNESOTA PRESS PRINTED...Number: A54-8933 FOREWORD The Mesabi range of Minnesota, because of its great economic importance, has...several publications on the geology of the Mesabi district, only recently has development of the range proceeded...the department of geology at the University of Minnesota. The problem was suggested to Mr. White as a suitable |  | | Journal (article/letter/editorial) | | Iron Range, Minnesota, USA PETER L. McSWIGGEN, G. B. MOREY AND JANE M. CLELAND Minnesota Geological Survey...Survey, 2642 University Avenue, St. Paul, Minnesota 55114, USA Abstract The recent discovery of hyalophane...Proterozoic Cuyuna Iron Range of east-central Minnesota has shed new light on the depositional environment...Proterozoic manganiferous iron ores of east-central Minnesota casts doubt on the historic interpretation of...deposits, hydrothermal activity, Cuyuna Iron Range, Minnesota. Introduction OUR recent discovery of hyalophane |  | | Journal (article/letter/editorial) | | States are in the Lake Superior region, in Minnesota, Wisconsin, and Michigan. Thinner units occur...iron-formationin the Lake Superiorregionis in the Iron River district,where a 50foot bed containing35 to 40 percentpyrite...oĹ“the separaterangesin Montana, State Surveysof Minnesota,Wisconsin,and Michi"Geologyof the Wyoming, and...iron-formationalsooccurin older rocks, both in Minnesota and Michigan, but the relative agesare uncertain...at least two places:the Vermilion districtof Minnesota,and DickinsonCounty,Michigan. A few patchesof |  | | Report (issue) | | OF THE CUYUNA DISTRICT, MINNESOTA: A PROGRESS REPORT UNIVERSITY OF MINNESOTA MINNESOTA GEOLOGICAL SURVEY... BULLETIN 36 The Geology of the Cuyuna District, Minnesota A PROGRESS REPORT BY FRANK F. GROUT AND...WOLFF, SR. MINNEAPOLIS· 1955 THE UNIVERSITY OF MINNESOTA PRESS PRINTED AT LUND PRESS, INC., MINNEAPOLIS...F. Wolff, Sr., studied the mines of the Cuyuna district in considerable detail. About 1940 a brief synopsis...Metallurgical Engineers at the University of Minnesota. In 1941 Mr. Grout started active field work on |  | | Journal (article/letter/editorial) | | (12) Tiantaishan, (13) UrkĂşt, (14) Urucum, (15) Usa, (16) Wafangzi. Size of the circle is proportional...rock-hosted deposits have some form of chert or jasper as the immediate host to the mineralization, and...Mamatwan (Paleoproterozoic), Nsuta (Paleoproterozoic), Usa (Cambrian), Jiaodingshan (Ordovician), Taojiang (Ordovician)...dig. supplement, App 2, for references). Data from Usa are shown in Figure 4 as an example. Oxygen isotopes...oxygen isotopes with the level of metamorphism. 5 Usa deposit - Cambrian, Russia y = -0.3022x - 1.4852 |  | Planavsky, Noah, Rouxel, Olivier, Bekker, Andrey, Shapiro, Russell, Fralick, Phil, Knudsen, Andrew (2009) Iron-oxidizing microbial ecosystems thrived in late Paleoproterozoic redox-stratified oceans. Earth and Planetary Science Letters, 286 (1) 230-242 doi:10.1016/j.epsl.2009.06.033 | Journal (article/letter/editorial) | | Riverside, 900 University Ave., Riverside, CA, 92521, USA Department of Marine Chemistry and Geochemistry,...MS25, 266 Woods Hole Road, Woods Hole, MA 02543, USA Department of Geological Sciences, University of...California State University, Chico, Chico, CA 95929, USA e Department of Earth Sciences, Lakehead University...Lawrence University, P.O. Box 599, Appleton, WI, 54912, USA b c a r t i c l e i n f o Article history: Received...Riverside, 900 University Ave., Riverside, CA, 92521, USA. E-mail address: noah.planavsky@email.ucr.edu (N |  | | Report (issue) | | and their setting in the southern Lake Superior district . Jeffrey K. Greenberg and Bruce A. Brown Early...rocks and the Penokean orogeny in east-central Minnesota . G. B. Morey iii 49 67 85 97 IV Contents...southern margin of the Superior Province from Minnesota to the Grenville Pro¬ vince, a distance of 1400...adjacent Wisconsin, to north central Wisconsin, to Minnesota. The final two pa¬ pers discuss two important...signifi¬ cance of red quartzites in Wisconsin and Minnesota. It is hoped that this collection of papers will |  | | Journal (article/letter/editorial) | | Mineralization Associated with the BolĂ©o Cu-Co-Zn District, Mexico ANDREW G. CONLY,†,1 STEVEN D. SCOTT,2...within stratiform ore beds or mantos, the BolĂ©o district of central Baja, Mexico, also contains significant...water table. Introduction THE BOLÉO Cu-Co-Zn district, situated midway along the eastern side of the...percent Mn. In the northwestern region of the district, Mn grades and tonnages (0.3 Mt averaging 40%...Santa RosalĂa district. Inset map shows the location of Baja California and the BolĂ©o district relative to |  | | Report (issue) | | no OIL ORO OIG ZoZ 292 Boulder County Tellurides .... 294 Boulder County Tungsten ...... eeoeeesee 296...323 A. Rifle area, Colorado «0s... 323 B. Uravan District, Colorado 324 Cope tick Rock DIsEEIcL sCoLoradO)...324 DeeGkante District, New sMext Comer. clecetsls cused cists! 0/0 326 E. Shiprock District, Utah—Arizona...Utah—Arizona ....vccccsnens F. Monticello-Moab-Thompsons District, Utah .....secvceee 326 327 ee eeseeee Gig GE...eeeeecenerereesrne er erence eee 498 MINNESOTA .... Minnesota eee Iron eer e eer ee Ranges eee |  | | Journal (article/letter/editorial) | | types may be subdivided into layered (Stillwater, USA, Kemi , Finland, Fiskenaesset, Greenland, and funnel-shaped...deposits such as Guseva-Gora, Russia, Duke Island, and USA, bridge the gap between the chromium deposit originating...Ostermann and Deutsch, 1997). The Stillwater Complex, USA, is akin to this group of mineralization — see PGE...occur at Jinchuan, China, in the Duluth Complex, USA, Muskox, Nunavut and Crystal Lake, Canada (Barnes...sediments but rarely in volcanic rocks e.g., Cobalt district of Ontario, Canada, Wittichen, Richelsdorf, Bieber | | | Journal (article/letter/editorial) | | types may be subdivided into layered (Stillwater, USA, Kemi , Finland, Fiskenaesset, Greenland, and funnel-shaped...deposits such as Guseva-Gora, Russia, Duke Island, and USA, bridge the gap between the chromium deposit originating...Ostermann and Deutsch, 1997). The Stillwater Complex, USA, is akin to this group of mineralization — see PGE...occur at Jinchuan, China, in the Duluth Complex, USA, Muskox, Nunavut and Crystal Lake, Canada (Barnes...sediments but rarely in volcanic rocks e.g., Cobalt district of Ontario, Canada, Wittichen, Richelsdorf, Bieber |
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