 | | Journal (article/letter/editorial) | | Rock-Hosted Stratiform Copper Deposit, Upper Peninsula, Michigan Theodore J. Bornhorst1,ā and William C. Williams2...Mineral Museum, Michigan Technological University, 1404 E. Sharon Avenue, Houghton, Michigan 49931 2 Orvana...Copperwood is located in Gogebic County, Upper Peninsula, Michigan, within the Porcupine Mountains copper...gray to black shales and siltstones of the basal Nonesuch Formation. Copper mineralization is overlain by...by laminated gray siltstones of the Nonesuch Formation and is underlain by red-bed sandstones, conglomerates |  | | Journal (article/letter/editorial) | | PRECAMBRIAN (1.1 GA) NONESUCH FORMATION IN THE VICINITY OF THE WHITE PINE COPPER MINE, MICHIGANI GEJING...ofMichigan, Ann Arbor, Michigan 48109-1063 Abstract-The Middle Proterozoic (1.1 Ga) Nonesuch Formation, host...host ofthe stratiform copper deposit at White Pine, Michigan, consists of 200 m of principally dark grey...rocks. Clay minerals from sampies collected from the mine area and drill holes up to 100 km away have been...phyllosilicates, both including white mica and chlorite, occur in the 'lower' Nonesuch Formation: (1) detrital-shaped |  | | Journal (article/letter/editorial) | | Minnesota-Duluth, Duluth, MN, 55812, USA b University of Wisconsin-Superior, Superior, Wl, USA Accepted 20 August 2001... two deep boreholes in the Upper Peninsula of Michigan are described in detail for the first time. Both...shale sequence is similar to the petroleum-bearing Nonesuch Formation farther west, there is no conglomerate...1355 Jefferson Forest Lane, Blacksburg, VA 24060, USA. 0037-0738/02/$ - see front matter D 2002 Published...boreholes in the MRS in the Upper Peninsula of Michigan. The Amoco Production #1-29R test (St. Amour) |  | | Journal (article/letter/editorial) | | variations in the Mesoproterozoic Nonesuch Formation, northern Wisconsin, USA Esther Kingsbury Stewart, Jeffrey...variations in the Mesoproterozoic Nonesuch Formation, northern Wisconsin, USA, Precambrian Research (2017)...variations in the Mesoproterozoic Nonesuch Formation, northern Wisconsin, USA Esther Kingsbury Stewartā 1 and...stratigraphic surfaces for the Mesoproterozoic Nonesuch Formation within the Ashland syncline, Wisconsin...fluctuatingprofundal facies association (lower Nonesuch Formation). The fluctuating-profundal facies association |  | | Book | | Mineralogy of Michigan by E. W. Heinrich updated and revised ā¢ by George W. Robinson M By E W~ Hellnr]ch...Museum Michigan Technological University Houghton, Michigan 49931 2004 Ā© MINERALOGY OF MICHIGAN 3 FOREWORD...FOREWORD Michigan has a long and varied geologic history that includes repeated episodes of volcanism...before the first Europeans set foot here. When Michigan became a state in 1837, one of the first actions...and we continue to learn more about them today. Michigan minerals helped to build the state and nation |  | Bornhorst, Theodore J., Paces, James B., Grant, Norman K., Obradovich, John D., Huber, N. King (1988) Age of native copper mineralization, Keweenaw Peninsula, Michigan. Economic Geology, 83 (3) 619-625 doi:10.2113/gsecongeo.83.3.619 | Journal (article/letter/editorial) | | Native Copper Mineralization,KeweenawPeninsula,Michigan THEODOREJ. BORNHORST,JAMESB. PACES, Departmentof...MichiganTechnological University,Houghton,Michigan49931 NORMAN K. GRANT, Departmentof Geology,Miami University,Oxford...the Keweenaw Peninsula THE Keweenaw Peninsulaof Michigan is the location of a dormant native copper mining...volcanicsare located within a belt 45 km long from (White, 1960). Twenty-two interflow sedimentary beds occur...of 2,500 to 5,200 m (Butler and Burbank, 1929; White, 1960, 1968). These basaltsrepresent the product |  | | Journal (article/letter/editorial) | | 895-914 A Sulfur IsotopicStudy of the White Pine Mine, Michigan S. W. BURā¢IE, H. P. Scaw^Rcz, ^m) J. H...cupriferouszone of the NonesuchShale at the White Pine Mine have a meangSa4of 3.5%o(CDT), ā¢ = 11.7%ā¢,and...sorted sand- Introduction Tā¢. White Pine Mine in OntonagonCounty,Michigan,is developed in the lowerNonesuchShale...seriesfilling the upper PrecambrianSuperiorbasin. The Nonesuch Shale is about 500 to 700 feet thick and is ex-...formationexhibit significantcopper mineralization. The Nonesuch Shaleconformably overliesthe CopperHarbor Conglomerate |  | | Report (issue) | | Oronto Group E2 Copper Harbor Conglomerate E2 Nonesuch Shale E2 Freda Sandstone E4 Bayfield Group E6...sedimentary rocks in Minnesota, Wisconsin, and Michigan were examined, sampled, and described with the...northeastward throughout the Keweenaw Peninsula in Michigan, and on Isle Royale in Lake Superior. Copper Harbor...from 2.6 to 5.4 percent of the rock by volume. Feldspar (5.7-12.6 percent) consists of slightly to intensely...having fluidal texture and containing potassium feldspar fragments predominate; basalt and diabase are |  | | Journal (article/letter/editorial) | | of footwall red beds (commonly, hundreds of km3: White, 1971; Hitzman, 2000; Hitzman et al., 2005). This...paleohydrologic analysis of the White Pine mineralization of northern Michigan, White (1971) concluded that both...footwall Copper Harbor Conglomerate in the White Pine district, Michigan (Elmore, 1981). The diagenetic reddening...Pyroxene Biotite Amphibole Magnetite Plagioclase K-feldspar 861 No. of analyzed samples Average Cu content...copper in actual deposits: the White Pine district in northern Michigan, and the Kupferschiefer copper |  | | Report (issue) | | University University Michigan Townsend Drive Drive 1400Townsend 1400 Houghton, Houghton, Michigan Michigan49931-1...Peninsula, Michigan: Institute on Lake Superior Geology Proceedings, Keweenaw Peninsula, Michigan: Institute...Lake Superior Superior Geology Peninsula, Michigan" Michigan" (Bornhorst (Bornhorst and others, 1983)... time, we considered that that "It is held at Michigan Technological presumptuous for for us us to put...Keweenaw Keweenaw Peninsula, Michigan" the late late This "Self-guided Michigan" is dedicated to the mapping |  | | Journal (article/letter/editorial) | | Deposit, Michigan Theodore J. Bornhorst1,ā and Mark J. Logsdon2 1 A.E. Seaman Mineral Museum, Michigan Technological...Drive, Suite 2, Aptos, CA 95003 Abstract Modern mine development requires consideration of environmental...tests commonly used to assess the potential for mine wastes to generate acidic and/or metalliferous drainage...would significantly overestimate the potential for mine rocks to affect water quality. While progressive...consequences of developing, operating, and closing a mine. Neither public policy nor community standards will |  | | Report (volume) | | Congress Cataloging-in-Publication Data Sims, P. K. (Paul Kibler), 1918Geology and metallogeny of Archean...distinguish them from I- and S-type (Chappell and White, 1974) orogenic granitoids. Anorogenic granitoids...previously by Kisvarsanyi (1980) to describe the alkali-feldspar-rich rocks of the St. Francois granite-rhyolite...35-1.4 Ga). Small to large intrusions of alkali feldspar-rich granitic rocks (1"1..11.4-1.5 Ga) were emplaced...Minnesota and northern Wisconsin and Michigan. In Wisconsin and Michigan they mainly compose the cores of |  | | Journal (article/letter/editorial) | | Geological Sciences, University of Michigan, Ann Arbor, Michigan 48105-1063 Department of Geological...and Sciences, Michigan Technological University, 1400 Townsend Drive, Houghton, Michigan 49931 Abstract-Siltstones...': .., Freda Sandstone PreĀ·Keweenawan Rocks Nonesuch Formation +~: Copper Harbor Congtomerate ..;:...AEM and TEM. GEOLOGICAL BACKGROUND The Freda and Nonesuch Formations are part of the Upper Precambrian Oronto...Formation), the thin siltstone-shale sequence of the Nonesuch Formation, and the finingupward cycles of fluvial |  | | Journal (article/letter/editorial) | | Earth and Environmental Sciences, University of Michigan, Ann Arbor, MI 48109, United States a r t i c...mass-balance from ~1.1 Ga old Midcontinent Rift System (USA) paleosols is used to reconstruct atmospheric pCO2...Nopeming Formation Oronto Group Freda Sandstone Nonesuch Formation (?) Copper Harbor Conglomerate Porcupine... 1094 Ma Solar Church Formation Wisconsin & Michigan Powder Mill Group 1087 Ma Keweenawan Supergroup...length from the Great Lakes region (Fig. 1) of the USA/Canada as far south as Kansas (Davis and Green, 1997) |  | | Report (volume) | | designate chapters] (A) Authigenic potassium feldspar in the Davis Formation (Upper Cambrian), Missouri...from selected aplites and quartz veins of White Pine County, Nevada, by D.E. Lee, E.L.M. Brandt, and J...micas from meta_clastic rocks of eastern White Pine County, Nevada, by D.E. Lee, R.E. Van Loenen, E.L...the Great Lakes region-A brief overview, by Paul K. Sims 55 (F) Sodium hypochlorite as an aid to the...Platinum and palladium in a mafic dike, Sanders County, Montana, by R.E. Van Loenen, Joseph Haffty, and |  | | Journal (article/letter/editorial) | | 1972; Cailteux, 1974; Fleischeret al., 1976), the White Pine deposit(Ensignet al., 1968; Brown, 1971), as...authigenicmineralassemblages, suchascarby Brown(1971), White (1971), Lur'ye and Gablina bonatesand sulfates,indicatesthat...2, 8; 1972, fig. 12). White McArthurbasin(Muir, 1979),partsof the Gunpowder Pine copper mineralizationis...southeastNew Mexico (Sarg, 1981). None of the White Pine mine area, southof the high, and in the aboveexamplesoverlie...adjacent to stratiformcopperore deposits. this feature(White andWright, 1966). The KupferThe hematite-bearin |  | | Journal (article/letter/editorial) | | Charlottesville, VA C.S. Martens, Chapel Hill, NC K. Marti, San Diego, CA G.A. McKay,t Houston, TX S.M...Bender T. Benjamin Ronald Benner M. Bennett Larry K. Benninger Gaboury Benoit Harold Bentley William Berelson...Michael I. Bird Tyson C. Birkett A. Bischoff James K. Bishop Malvin Bjeroy T. H. Blackbum Bonnie Blackwell...De Boer Donald D. Bogard R. Bohler J. K. Bohlke M. C. Boiron J. K. Bokke Jim Boland James R. Boles A. M...Jeremy Burdett David J. Burdige Donald S. Burnett Alan K. Bumham Roger G. Bums Robert C. Burruss Donald M |  | | Journal (article/letter/editorial) | | Charlottesville, VA C.S. Martens, Chapel Hill, NC K. Marti, San Diego, CA G.A. McKay,? Houston, TX S.M...Bender T. Benjamin Ronald Benner M. Bennett Larry K. Benninger Gaboury Benoit Harold Bentley William Berelson...De Boer Donald D. Bogard R. Bohler J. K. Biihlke M. C. Boiron J. K. Bokke Jim Boiand James R. Boles A....Jeremy Burdett David J. Burdige Donald S. Burnett Alan K. Burnham Roger G. Bums Robert C. Burruss Donald M...A. Floyd Robert Adam Fogel Kenneth A. Foland Nora K. Foley M. Fontugne C. J. R. Fookes H. Forstel U. Forstner |  | | Journal (article/letter/editorial) | | Geological Sciences, University of Michigan, Ann Arbor, Michigan 48109-1063 2Geology Department, University...sediments, has K as the dominant interlayer cation, suggesting that precursor smectite may be a major K source...Or7oAb3Q' The glass shards are largely replaced by K-rich, Si-rieh heulandite ranging into elinoptilolite...siltstones contain elasts of quartz; plagioclase feldspar; abundant intermediate to felsie fine-grained...illite layers, some sampies were treated with L.R. White resin (Kim et al. 1995) prior to TEM sampie preparation |  | Drahovzal, James A., Harris, David C., Wickstrom, Lawrence H., Walker, Dan, Baranoski, Mark T., Keith, Brian, Furer, Lloyd C. (1992) The East Continent Rift Basin: a new discovery. Special Report 52. Indiana Geological & Water Survey doi:10.5967/e8r2-c634 | Report (issue) | | sandstones below the Mount Simon Sandstone in Warren County, Ohio, in 1988. This sandstone, the Middle Run...Putnam County, Ohio, in the north, to Jessamine County, Kentucky, in the south, and to Fayette County, Indiana...the Midcontinent Rift System (MRS) in southern Michigan. The southern boundary is poorly defined, but...Ohio Geological Survey research borehole in Warren County (ODNR DGS No. 2627) was predicted to reach crystalline...gravity anomalies that extends from southwestern Michigan to north-central Tennessee (Fig. 2). This gravity |  | Aleinikoff, J. N., Hayes, T. S., Evans, K. V., Mazdab, F. K., Pillers, R. M., Fanning, C. M. (2012) SHRIMP U-Pb Ages of Xenotime and Monazite from the Spar Lake Red Bed-Associated Cu-Ag Deposit, Western Montana: Implications for Ore Genesis. Economic Geology, 107 (6) 1251-1274 doi:10.2113/econgeo.107.6.1251 | Journal (article/letter/editorial) | | ALEINIKOFF,1,ā TIMOTHY S. HAYES,2 KARL V. EVANS,3 FRANK K. MAZDAB,4 RENEE M. PILLERS,5 AND C. MARK FANNING5...operated by Revett Minerals, Inc., as their Troy Mine. Spar Lake is one of more than 40 Cu-Ag deposits...Kootenay Orogeny (White, 1959; McMechan and Price, 1982). 2. Near the Sullivan Mine, British Columbia...west of Plains, Montana (Fig. 1), J (silty beds) and K (quartzite beds) occur at the bottom of the formation;...rocks (White, 1979; Hayes, 1990; Boleneus et al., 2005). Revett-hosted ore systems are in white, pale |  | | Book | | Science Center Boston University Boston, MA 02215, USA Dr. David M. McKirdy, Sr. Lecturer Dept. of Geology...Carolina State University Raleigh, NC 27695-8208, USA Dr. Philip A. Trudinger Bureau of Mineral Resources...Taylor P. A. Trudinger H. G. Triiper J. Veizer J. K. Volkmann M. R. Walter M. A. Wilson List of Contributors...Louisiana State University, Baton Rouge, LA 70803-4104, USA AI-Biatty, H.J., Dr. Department of Earth Sciences...University of Santa Barbara, Santa Barbara, CA 93106, USA Banerjee, D. M., Dr. Department of Geology, University |  | | Journal (article/letter/editorial) | | low-grade metamorphic rocks, Keweenaw Peninsula Michigan, USA Edward Hansen a,ā, Jesse Reimink a, Daniel Harlov...Hope College, 35 E 12th Street, Holland, Michigan 49423 USA Section 3.3 Chemistry and Physics of Earth...rhyolite clasts from the Keweenaw Peninsula, Michigan, USA which were metamorphosed to the prehniteā pumpellyite...a conglomerate from the Keweenaw Peninsula, Michigan, USA metamorphosed to the prehniteāpumpellyite-facies...Lake Volcanics of the Keweenaw Peninsula in Michigan, USA (Fig. 1a), are a thick (2500 to 5000 m) sequence |  | | Report (issue) | | VOLCANICS (MIDDLE KEWEENAWAN) ON ISLE ROYALE, MICHIGAN Prepared in cooperation with the National Park...Isle Royale, Michigan By N. KING HUBER GEOLOGY OF ISLE ROYALE NATIONAL PARK, MICHIGAN GEOLOGICAL SURVEY...middle and upper Keweenawan rocks of northern Michigan and adjacent parts of Wisconsin--------------...NATIONAL PARK, MICHIGAN THE PORTAGE LAKE VOLCANICS (MIDDLE KEWEENAWAN) ON ISLE ROYALE, MICHIGAN By N. KING...[Portage Lake Volcanics] as it exists from the Central Mine to Portage Lake," on the Keweenaw Peninsula. Since |  | | Book | | variety, etc. T Tsumeb (vol. 8, no. 3) M y Michigan Copper Country (vol. 23, no. 2) Co. Company...five book-format issues (8/#3, Tsumeb; 23/#2, Michigan Copper Country; 23/#4, Yukon Phosphates; 24/#2...of the] FM-TGMS-MSA Wulfenite Symposium (chairman: K. Wenrich) 21:98100 Abstracts of the FM-TGMS-MSA Symposium...(chairman: K. Wenrich) 22:65-69 [Abstracts of the] FM-TGMS-MSA Symposium on Garnet (chairman: K. J. Wenrich)...On a spectacular find of crocoite in the Adelaide mine, Dundas, Tasmania (by A. H. Chapman) 3:111-113 ADOLFSSON |
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