 | Cornwall, H.R., Runner, J.J., Stromquist, A.A., Swanson, R.W., White, W.S. (1949) Detailed geologic map of the recently active copper mines; Houghton and Keweenaw Counties, Michigan. Open-File Report Vol. 1949 (50-4) US Geological Survey doi:10.3133/ofr504 | Report (issue) | | copper nines, -..- roughton and Keweenaw Counties, Michigan H. R. Cornwall, J. J. Runner, A. A. Stromquist................. 10 Central Exploration fissure mine, 12 Introduction................ + (- ; Stratigraphy...Distribution of copper,.*»...................... 33 The Houghton conglomerate *>re body, Allouez No* 3* shaft.*...copper*«...._................,.. 26 ->- Quincy mine ,..........*.......*................... Introduction............^.................... 32 Isle Royale mine ................................... 3U ; *" 30 |  | | Report (issue) | | (CaBSiO4OH) vesicle filling from a basaltic Houghton County lava flow. Small specks of native copper occur...the surface and between the nodular masses. The Michigan Bicentennial symbol (back cover) incorporates...Survey Division BULLETIN 6 THE MINERALOGY OF MICHIGAN by E. Wm. Heinrich Professor of Mineralogy and...University of Michigan Ann Arhor, Michigan Lansing, Michigan 1976 STATE OF MICHIGAN WILLIAM G. Mrr...State of Michigan CL '48 s.321.6. Printed by Speaker-Hines and Thomas, Inc., Lansing, Michigan. Available |  | | 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...Proceedings, 40th 40thAnnual AnnualMeeting, Meeting,Houghton, Houghton,Ml, 40, part part2, 2, 185 185p. p. MI,v...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 |  | | Journal (article/letter/editorial) | | Michigan Mineralogy: A LOCALITY INDEX TOM MORRIS, JR. 4553 Shenandoah Allen Park, Michigan 48101 Tom...occurrences. These localities have been listed by county; and, strictly for convenience, the list has been...compiling this information was The Mineralogy of Michigan (Heinrich, 1976), which should be consulted by...locality labeling of Michigan specimens. It should be pointed out that the list of Michigan mineral localities...None theless, with the aid of a good state or county map, plus local inquiries, the list could be helpful |  | | Book | | Mineralogy of Michigan by E. W. Heinrich updated and revised • by George W. Robinson M By E W~ Hellnr]ch...Museum Michigan Technological University Houghton, Michigan 49931 2004 © 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 |  | | Journal (issue) | | copper in the Quincy mine ca. 1918. (Michigan Technological University Archives, Houghton) D e d ic ated...Donald Pearce (1941-1989) The “Copper King” The MICHIGAN COPPER COUNTRY L. W i l s o n New Mexico Bureau...t a n l e y J. D y l II Seaman Mineral Museum Michigan Technological University % 1992 T h e M in e...crystal group, 13.6 cm, from an unknown mine in the Michigan Copper Country. Richard A. Kosnar collection;...wrote the classic work on the copper deposits of Michigan in 1929. Photo by Wendell E. Wilson. TENT . |  | | Journal (article/letter/editorial) | | MICROCLINE IN THE NATIVE COPPER DEPOSITS OF MICHIGAN Ina KrorN, Stanf ord, U ni.oersity, C al'iJorni...intensive mining activity in the copper country of Michigan, and detailed study of the native copper deposits...650-654 (1900). 643 IRA KLEIN on which the Calumet Mine was sunk, pointing out its adularialike habit and...is aware of only two such localities outside of Michigan from which secondary feldspar is reported. A "pink...the workings of the Mass, the Adventure, and the Michigan mines. About 60 miles northeast, the Arcadian |  | | Journal (article/letter/editorial) | | Finland Heikki S. Pankka a and Erkki J. Vanhanen b a Michigan Technological University, Department of Geological...Geological Engineering, Geology and Geophysics, Houghton, M149931, USA b Geological Survey of Finland, Regional...confined to the two lowermost sedimentary units, the Sericite Quartzite and Siltstone Formations. These are...dolomite-intercalations grading into the overlying Sericite Quartzite Formation. This formation, which is...quartzite its lower part which grades upwards into a sericite schist with stromatolitic dolomite interlayers |  | | Journal (article/letter/editorial) | | SOCIETY NOVEMBER, RECENT CONTRIBUTIONS OF THE MICHIGAN T. M. BRODERICK, OF GEOLOGISTS 1946 TO COPPER...previously publishedin geologicalstudies of the Michigan copperdistrict by the Calumetand Hecla GeologicalDepartment...ProfessionalPaper 144, "The Copper Depositsof Michigan," and the continuationof geological studiesby...deposits of Michigan, U.S. Prof. Pap. 144, p. 2, 1929. Geol. Surv. GEOLOGYOF MICHIGAN COPPERDISTRICT...These are as follows: T. M. Broderick, Zoning in Michigan copperdepositsand its significance. EcoN. Gv.ox |  | | Journal (article/letter/editorial) | | Subprovince Hudson Bay 49˚N Superior Craton Canada USA 500 km Hemlo Wawa Subprovince Renabie Wawa Gold...89 Ga) Archean - International Boundary - Gold Mine(s) (Current or Past Production) Fig. 1. Simplified...DISTRICT - Au Occurrence Rennie Lake Stock Renabie Mine Area 2668?2 45 5,360,000 mN 50 Michipicoten...A’ C-Zone 50 2688±2.01 2728.6±1.11 Renabie Mine 65 Wawa Gneiss Domain 85 N 286,000 mE (A)...East 50 75 Braminco 40 65 2720.8±1.41 70 30 Baltic D 1 km 5,360,000 mN Proterozoic Fine-Grained |  | | Report (issue) | | the Iron River-Crystal Falls District, Iron County Michigan GEOLOGICAL SURVEY PROFESSIONAL Prepared...cooperation with the Geological Survey Division of the Michigan Department of Conservation PAPER 570 Geology...the Iron River-Crystal Falls District, Iron County Michigan By H. L. JAMES, C. E. BUTTON, F. J. PETTIJOHN...cooperation with the Geological Survey Division of the Michigan Department of Conservation UNITED STATES GOVERNMENT...northern Iron River area. Sections A-A' to E-E' through mine workings in the southeastern Iron River area. 1-3 |  | | Book (volume) | | Dahlonega Co. and Rabum Co., and the McDuffie County Belt extending through portions of McDuffie, Warren...Sphalerite. BALDWIN COUNTY MILLEDGEVILLE, at state farmjasper. BANKS COUNTY COMMERCE, along Hwy. 59...along adjoining Co. linerock crystal. BARROW COUNTY WINDER, along rd. to Jefferson and 1½ mi. inside...Guide for Rock Hounds in the United States BARTOW COUNTY AREA, Saltpeter Cave, as floatjasper. CARTERSVILLE:...agate, (banded, various colors), jasper. BIBB COUNTY MACON: at Holton Quarry, 7½ mi. NWagate; N |  | | Journal (article/letter/editorial) | | 5251 Broad Branch Rd., N.W., Washington, DC 20015, USA b Department of Geology, University of Helsinki,...Maryland at College Park, College Park, MD 20742, USA Received 13 November 2005; received in revised form...of the Chocolay Group in the Lake Superior area, USA and the Gordon Lake Formation of the correlative...Carbonates of the Mille Lacs Group (Trout Lake, Glen Township, and Denham formations) in Minnesota have δ13...units of the Chocolay Group in Wisconsin and Michigan and the Mille Lacs Group of Minnesota. Our objectives |  | | Report (issue) | | Copper Country Ellis W. Courter Contribution to Michigan Geology 92 01 Table of Contents Preface ........geology and history of the copper deposits of Michigan. Every effort has been made to present accurate...necessarily reflect the policies or practices of the Michigan Department of Natural Resources, Geological Survey...Nonetheless, he was very well known by hobbyists in Michigan and surrounding areas. The National Rockhound...collector whose specialty was Michigan. He was also a past president of the Michigan Mineralogical Society and |  | | Journal (article/letter/editorial) | | AND ASSOCIATED ROCKS IN THE IRON RIVER DISTRICT, MICHIGAN By HAROLD L. JAMES ABSTRACT The iron formation...L. JAMES—IRON FORMATION, IRON RIVER DISTRICT, MICHIGAN INTRODUCTION Iron-rich sedimentary strata are...northern peninsula of Michigan (Fig. 1). This district and adjacent areas of Michigan have been studied by...cooperation with the Geological Survey Division of the Michigan Department of Conservation, for the past several...the compilation of a geologic map of Iron County by the Michigan Survey in 1929 (Barrett, Pardee, and Osgood) |  | | Journal (volume) | | lithogenesis in the south-eastern part of the Baltic Shield . V. A. Sokolov and K. I. Heiskanen On the...reaction suggests that illite, now recrystallized to sericite in the Witwatersrand and Pongola mudstones and...felds par is absent. The matrix constituents are sericite and chlorite: Some of the chlorite consists of...braided alluvial, fan-delta deposits (Button & Adams 1981). The shallow-marine sub environments recognized...ripples and desieeated mudstone drapes (Button and Adams 1980, p. 140). Transgression was probably promoted |  | Driese, Steven G., Medaris, L. Gordon, Kirsimäe, Kalle, Somelar, Peeter, Stinchcomb, Gary E. (2018) Oxisolic processes and geochemical constraints on duration of weathering for Neoproterozoic Baltic paleosol. Precambrian Research, 310. 165-178 doi:10.1016/j.precamres.2018.02.020 | Journal (article/letter/editorial) | | constraints on duration of weathering for Neoproterozoic Baltic paleosol Steven G. Driese, L. Gordon Medaris Jr...constraints on duration of weathering for Neoproterozoic Baltic paleosol, Precambrian Research (2018), doi: https://doi...on duration of weathering for 2 Neoproterozoic Baltic paleosol 3 Steven G. Driese1*, L. Gordon Medaris...Stinchcomb4 5 1 6 One Bear Place #97354, Waco, Texas, USA; *E-mail: Steven_Driese@baylor.edu 7 2 Department...University of Wisconsin-Madison, Madison, WI 53706 USA 8 3 Department of Geology, Tartu University, 50411 |  | | Report (issue) | | quartz-pebble conglomerates, Southern Lake Superior Region, USA ...................................................conglomerates of the Black Hills, South Dakota, USA .......... J.A. Redden Application of the time and...quartz-pebble conglomerate in southeastern Wyoming, USA ..................................... R.S. Houston...Dakota, Montana, Colorado, Arizona, California, Michigan, and Wisconsin. Models were developed around the...models by Houston and Karlstrom [4] and Button and Adams [5], and are used in a report by Karlstrom and others |  | Hein, James R, Fan, Delian, Ye, Jie, Liu, Tiebing, Yeh, Hsueh-Wen (1999) Composition and origin of Early Cambrian Tiantaishan phosphorite–Mn carbonate ores, Shaanxi Province, China. Ore Geology Reviews, 15 (1) 95-134 doi:10.1016/s0169-1368(99)00017-7 | Journal (article/letter/editorial) | | 345 Middlefield Rd., MS 999, Menlo Park, CA 94025, USA b Institute of Geology, Chinese Academy of Sciences...batteries. The outlook is not good for a large-scale Mn mine Žsee Section 4 for additional grade data on individual...beds.. 3. Geological setting The Tiantaishan P–Mn mine covers about 80 km2 , and has complex structural...Yagushan phosphorite blocks ŽFig. 2.. Rocks in the mine area are Precambrian, Lower Cambrian, Lower Silurian...metavolcanic rocks Žgrayish-green albite–sericite–chlorite schist, albite–sericite–quartz schist. in the lower part; |  | | Book (volume) | | CB2 1RP 32 East 57th Street, New York, NY 10022, USA 10 Stamford Road, Oakleigh, Melbourne 3166, Australia...Avalon Platform and basins Phosphatic sediments Baltic Platform 94 Phosphatic sediments Precambrian 95...Australia 246 Huron River and Dead River Basin, Michigan, United States of America 246 Carleton Country...Minas Gerais, Brazil 246 East Fork District, Sevier County, Tennessee, United States of America 246 Kodjari... Australia 25/ Dead River Basin, Michigan 25/ Huron River, Michigan 252 East-central Minnesota 252 Udaipur |  | | Book (volume) | | 600 to 800 feet thick in the north. ALEXANDER COUNTY FAYVILLE, area stream gravels⎯agate, jasper, rare...⎯agate, jasper; d RR siding of Clay⎯agate. CALHOUN COUNTY AREA, shores of the Mississippi R., in the Warsaw...crystals). CRAWFORD COUNTY PALESTINE, area deposits⎯Siderite. EDWARDS COUNTY AREA, T. 1 S, R. 10 E...deposits⎯Siderite. FULTON COUNTY FARMINGTON, W 6 mi. on Rte. 116 to the Rapatee No. 5 strip mine⎯pyritized gastropods...gastropods (Pennsylvanian age). GRUNDY COUNTY AREA: c Regional rd. and RR cuts and banks of Mason Cr.⎯fossils; |  | | Book (volume) | | 600 to 800 feet thick in the north. ALEXANDER COUNTY FAYVILLE, area stream gravels⎯agate, jasper, rare...⎯agate, jasper; d RR siding of Clay⎯agate. CALHOUN COUNTY AREA, shores of the Mississippi R., in the Warsaw...crystals). CRAWFORD COUNTY PALESTINE, area deposits⎯Siderite. EDWARDS COUNTY AREA, T. 1 S, R. 10 E...deposits⎯Siderite. FULTON COUNTY FARMINGTON, W 6 mi. on Rte. 116 to the Rapatee No. 5 strip mine⎯pyritized gastropods...gastropods (Pennsylvanian age). GRUNDY COUNTY AREA: c Regional rd. and RR cuts and banks of Mason Cr.⎯fossils; |  | | Journal (article/letter/editorial) | | Svecofennianprov. ~ Normal fault Fig. 1. The Baltic Shield with major subdivisionsof provinces and...the Archaean domain in the northern part of the Baltic Shield (Fig. 1 ). This domain consists of Archaean... and calcareous sediments, and accompanied by sericite-chlorite-quartz alteration. The volcanic pile...consistent way up determinations in the Viisternorrland county indicate at least a 10 km thick pile (Lundqvist...alterations are dominated by sericite, and often form what are called "sericite-quartzites". Chloritic alteration |  | | Journal (volume) | | bedrock of Sweden is Precambrian and belongs to the Baltic Shield. The Precambrian rocks have been affected...metasediments is confined to the southeast along the Baltic sea. Scattered remnants of this cover occur in...base metal ores . To the north, in the Norrbotten county, there is the iron ore district of Kiruna which...of jaspilitic hematite and magnetite. The Längban mine is famous for its mineral wealth, there G eological...of the Falu type (e.g. the Silver mine at Hällefors and Gruväsen mine) contained within dolomite and limestone |  | | Journal (article/letter/editorial) | | ending with collision between the Laurentian and Baltic continents (the climactic Scandian phase of orogeny)...which were ultimately thrusted eastwards above the Baltic plate margin. The present consensus is that sequences...were present. Early rift basins preserved on the Baltic side of the rifted megacontinent, were ®lled with...tectonostratigraphically above and west of the Baltic platform lithologies. These host many Cu-Zn sulphide...20 Mt were known at the now abandoned Tverrfjell mine and the recently closed Joma deposit. Minor Cu-Ni |
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