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| articles on the mines and minerals of Michigan's Copper Country Rocks & Minerals 2001.76:156-188. Tom...I , < h,,,rl,rp,, ,,I I r,,,,l>,l\ T HE MICHIGAN COPPER DISTRICT stretches in a southwest-northeast...from the White Pine mine in Ontonagon County to Copper Harbor in Keweenaw County. Copper mineralization occurs...(chalcocite) deposit at the White Pine mine and (2) the world-class native copper deposits that occur in the Portage...Lake Volcanics (PLV) and the Copper Harbor Conglomerate. The native-copper deposits can be further divided |
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| very low-grade metamorphic rocks, Keweenaw Peninsula Michigan, USA Edward Hansen a,ā, Jesse Reimink a...Hope College, 35 E 12th Street, Holland, Michigan 49423 USA Section 3.3 Chemistry and Physics of Earth...low-grade metamorphism Titanite TiO2 Pseudorutile Keweenaw Peninsula Prehniteāpumpellyite-facies a b s t...basalt and rhyolite clasts from the Keweenaw Peninsula, Michigan, USA which were metamorphosed to the prehniteā...and rhyolite clasts in a conglomerate from the Keweenaw Peninsula, Michigan, USA metamorphosed to the p |
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| University University Michigan Townsend Drive Drive 1400Townsend 1400 Houghton, Houghton, Michigan Michigan49931-1...J. the Keweenaw Peninsula, Michigan: Institute on Lake Superior Geology Proceedings, Keweenaw Peninsula...Peninsula, Michigan: Institute on Lake Superior Geology Proceedings, 40th 40thAnnual AnnualMeeting, Meeting..."Field Guide to the Geology Geology of the the Keweenaw Keweenaw Annual Institute Institute on on Lake Lake...Lake Superior Superior Geology Peninsula, Michigan" Michigan" (Bornhorst (Bornhorst and others, 1983) for |
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| with a large mass of native copper in the Quincy mine ca. 1918. (Michigan Technological University Archives...of Donald Pearce (1941-1989) The āCopper Kingā The MICHIGAN COPPER COUNTRY L. W i l s o n New Mexico...t a n l e y J. D y l II Seaman Mineral Museum Michigan Technological University % 1992 T h e M in e...COVER: Native copper crystal group, 13.6 cm, from an unknown mine in the Michigan Copper Country. Richard...Burbank) wrote the classic work on the copper deposits of Michigan in 1929. Photo by Wendell E. Wilson. |
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| MICROMOUNTING AT THE KEWEENAW PENINSULA, MICHIGAN By PAUL B. MOORE and RICHARD M. 6EGER Depr. of Geolophysical...INTRODUCTION The Keweenaw Feninsula is well-known for its fine specimens of copper, datolite, calcite...afford little material of interest besides the usual copper and silver. With mounting discouraging trips, we...particularly pumpellyite and chlorastrolite and copper xls can only be fully appreciated by use of a microscope...collectors with limited time, may we suggest the Hancock Mine (on Ingot St., Hancock). The dump looks terrible |
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| CONTRIBUTIONS OF THE MICHIGAN T. M. BRODERICK, OF GEOLOGISTS 1946 TO COPPER C. D. HOHL, No. 7................................ 686 Presenceof Copper ...... : ........................................previously publishedin geologicalstudies of the Michigan copperdistrict by the Calumetand Hecla GeologicalDepartment...Love11, President, Calumet and Hecla Consol{dated Copper Company. 675 676 T. M. BRODERICK, C. D. HOHL...effectually concealsuchdeposits. The tendencyfor conglomerate ore shootsto have shortlengthsalongthe strike |
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| Park 13700 13.25 LaneĀ Ā Garden, Michigan 49835 Tel: (906) 644-2603 Keweenaw Peninsula Jill Barbour (jnbarbour@mtu...Department of Geological Sciences & Engineering Michigan Technological University 1400 Townsend Dr., Houghton...Rocks National Lakeshore P.O. Box 40, Munising, Michigan 49862 Tel: (906) 387-2607 / Email: David_Kronk@nps...Mining Engineering and Sciences (adjunct) Northern Michigan University Marquette, MI 49855 Tel: (906) 227-1176...wildr@michigan.gov Mine Descriptions Rob Porritt, Dept of Geological Sciences & Engineering, Michigan Technological |
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| ZONING IN MICHIGAN COPPER SIGNIFICANCE. DEPOSITS AND ITS ā¢ T. M. BRODERICK. PART I. DISTRIBUTION...DISTRIBUTION OF ARSENIC IN THE MICHIGAN NATIVE COPPER DEPOSITS. CONTENTS. Introduction .............................. Arsenic distributionin the Wolverine mine .......... Arsenic distributionin the Baltic lode...broader aspectsof the district as presentedin "The Copper Depositsof Michlgan" (U.S. G. S. Prof. Paper i44...Sketchmap showingprincipal copperbearing lodes,Keweenaw Point, Michigan. the more importantof the many depositswhich |
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| s o r g e conglornero t e .... @ Quincy mine @ Allouez no. 3 shaft Other detailed sections . I...GEOI.OGIC M A P O F SOME PEGMATITIC LAVA FLOWS, MICHIGAN C O P P E R D I S T R I C T Downloaded from https://pubs...KEWEENAWAN SERIES AND THE ORIGIN OF THE COPPER DEPOSITS OF MICHIGAN By HENRY R. CORNWALL ABSTRACT Five lava...lava flows in the Keweenawan series of the Michigan copper district have been studied and chemical analyses...differentiation in the flows to the origin of the copper deposits. The primary factors in the differentiation |
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| completely covered by patches of Cretaceous conglomerate and a thick mantle of glacial drift, presenting...stratigraphic succession in the Iron River district of Michigan from the Brule river northward consists of finegrained...by diabase dikes. About 200 feet of slate and conglomerate are exposed on Pilot Knob. The igneous rocks...Allen, "The Iron River Iron-bearing District of Michigan," Mich. Geol. and Biol. Surv., 1910, 144 pp.,...that the fresh rocks contain more copper than the altered, the copper being in the form of a basic silicate |
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| BEDROCK GEOLOGY AND COPPER DEPOSITS OF THE MATCHWOOD QUADRANGLE, ONTONAGON COUNTY, MICHIGAN By Robert F. Johnson...Lava Series 3 Unnamed formation 5 Copper Harbor Conglomerate 9 Nonesuch Shale 13 Jacobsville Sandstone...BEDROCK GEOLOGY AND COPPER DEPOSITS OF THE MATCHWOOD QUADRANGLE, ONTONAGON COUNTY, MICHIGAN ' ~ By Robert...The Matchvood quadrangle is in central Ontonagon County, just west of the Ontonagon River and its Middle...consisting of mafic and felsic lava flows, the Copper Harbor Conglomerate, the Nonesuch Shale, and the Freda Sandstone |
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| 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 |
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| filling from a basaltic Houghton County lava flow. Small specks of native copper occur as inclusions near the...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 |
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| February 2015 Figure 2. A generalized map of the Michigan copper district showing the location of new finds...Besse. arborescent copper crystal groups cached at the Central mine town site, (2) copper crystals recovered...Gull Rock fissure vein, (3) hundreds of copper from the Indiana mine, and (4) more than two hundredV aecilS...analcime/calcitecrystal groups from the Rhode Island mine. This article describes these and other finds made...starting with Keweenaw Point and continuing in a southwestern direction to the White Pine mine at the southern |
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| Geological Engineering, Michigan College of Mining & Technology Houghton, Michigan Introduction There is...Historical In the Keweenawan series of the Michigan Copper Country occur the so-called felsite conglomerates... they have yielded about one-half of the total copper product of the district. Stratigraphically, they...demonstrated by the usual custom of the amygdaloidal mine operators; this is, that when the operators lose...they are stratigraphically they cross-cut to a conglomerate. These conglomerates vary in thickness from |
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| Michiganās Copper Country Ellis W. Courter Contribution to Michigan Geology 92 01 Table of Contents.......................................... 2 The Keweenaw Peninsula ............................................................ 6 Europeans Come to the Copper Country .........................................Ontonagon Copper Boulder ............................................................... 18 The Copper Rush...Michiganās Copper Country ā CMG 92 01 - page 1 of 144 Preface Few people realize that Michigan's copper had |
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| Calumet, Michigan 49913 datolite@charter.net Keweenaw Figure 1. A delicate group of copper crystals...crystals collected at the Ojibway No. 1 mine in summer 2009 by Steve Whelan. The specimen is 12.4 Ć 6.2 cm and...minerals of Michiganās Copper Country Figure 2. Generalized map of the Michigan copper district showing the...Michiganās Copper Country T he Michigan Copper Country, also known as the Lake Superior native copper district...scenic Keweenaw Peninsula, which juts out into Lake Superior at the western end of Upper Michigan. The |
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| GRAVE Life, Work, and Death at the Lake Superior Copper Mines LARRY LANKTON OXFORD UNIVERSITY PRESS New...life, work, and death at p.cm. the Lake Superior copper mines./ Larry Lankton. Includes bibliographical...(pap) 1. Copper industry and tradeāMichiganāKeweenaw PeninsulaāHistory. 2. Copper minersāMichiganāKeweenaw...Ā„ mS Preface It is quite possible that the Keweenaw was in the long run the most profitable of any...Perhaps the reason for its lack of fame outside Michigan itself is that its annals, like those of happy |
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| Historical Sketch of Smelting and Refining Lake Copper, by Jas. B. Cooper. ..............................................23 No. 5 Shaft at the Tamarack Mine, by W. E. Parnall, Jr. .26 The Crystalization of........31 A Cause for Inaccuracy in Colorimetric Copper determinations, by Dr. Geo. A. Koenig ...........Testing and Control of the Product in a Modern Copper Refinery, by Geo. L. Heath ......................Corliss Cross-Compound Pumping Engine in Penobscot Mine, by Jno. A. Redfern ........................... |
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| Flows of the Portage Lake Lava Series below conglomerate No. 14 near E:earsarge, Mich_____________ 4...Portage Lake Lava Series between conglomerate No. 14 and conglomerate No. 15 near Kearsarge, Mich____...Flows of the Portage Lake Lava Series above conglomerate No. 15 near Kearsarge, Mich_ _ _ _ _ _ _ _ _...flows near Grand Portage, Minn., gabbro in Cook County, Minn., sedimentary rocks of the Sibley Series...group includes the Portage Lake Lava Series on the Keweenaw Peninsula and most of the North Shore Volcanic |
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| Texas 78204 Mlcrocryā¢tal Collectlng In Keweenaw County, Michigan by Jean R. Rentmeister .................CA. Host, Gem and Mineral Society ol San Mateo County. H.B. Murnan, P.O. Box 53, NAS Mollett Field, CA...Mineralogy Society. Annual Show. Benton-Franklin County Fairgrounds. Kennewick, WA. 10-10 and 10-6. Donald...Soc:lety. Annual " Artistry from Nature." Ventura County Fairgrounds, Ventura, CA. 10-10 and 10-5. Ed Turner...Howard County Gem, Mineral and Artlfact Show. Host. Big Springā¢ Proapec:ton Club. Howard County Fair Bldg |
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| 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...-Ā·Ā·Ā·-Ā·--Ā· 2 The Portage Lake Volcanics on the Keweenaw Peninsula__ 3 The Portage Lake Volcanics on Isle...------Correlation between Isle Royale and the Keweenaw Peninsula -----------------------------------...middle and upper Keweenawan rocks of northern Michigan and adjacent parts of Wisconsin-------------- |
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| MICHIGAN COPPER! The Mineralogical Record JANUARY-FEBRUARY 2023 ? VOLUME 54 ? NUMBER 1 ? $40 ... KRISTALLE Est.1971 Laguna Beach, California, USA ā¢ Tel: +1 949 494 5155 ā¢ Email: info@kristalle.com...gemgypsy@bellsouth.net JANUARYāFEBRUARY 2023 Articles Copper Country II Introduction..............................................3 by W. E. Wilson The Keweenaw County Fissure Mines....................................13 by C. J. Stefano The Cliff Mine, Keweenaw County, Michigan................................... |
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| Lake Superior mining The Keweenaw copper district of Michigan 33 35 35 Copper mining on Isle Eoyal and...developments 45 ., 45 Clinton iron ores of Dodge County, Wis 45 Paleozoic iron ores in western Wisconsin...geologic 70 knowledge 72 Bibliography 73 Michigan Northern Wisconsin Minnesota 77 Ontario 81...Menominee 96 96 97 district Crystal Falls district Keweenaw Point Northern ^Wisconsin Central Wisconsin...99 Royal and Michipicoten Island Keweenaw Point and northern Michigan and Wisconsin Keweenawan mesas Huronian |
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| Menlo Park, CA Donald R. Peacor University of Michigan Ann Arbor, Ml George W. Robinson Natl. Museums...R. Kampf Natural History Museum of Los Angeles County George Robinson National Museums of Canada Arthur...........19 by O. Johnsen Michigan Native silver occurrences in the copper mines of Upper M ich ig a...Islet Famous mineral localities: the Silver Islet mine, O n ta rio ............... 49 by W. E. Wilson ...photo Ā© SILVER crystals, 3.3 by 4.5 cm, from the mine, Kongsberg, Norway. (See the this issue.) Keith |
