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| Sholdeis-Doane and Hed Rock explorations, Iron County, Michigan Kenneth L. Wier and Brace E. Kennedy Prepared...cooperation of the Geological Survey Division Michigan Department of Conservation This report and accompanying...with inter"bedded metasediments (Hemlock formation) .............. 7 Iron-formation .......................... 12 Volcanic greenstones (Hemlock formation) ..... 12 Iron-formation .................. 13...area, Iron County, Michigan Magnetic data in vicinity of ShoIdeis and Doane explorations, Iron County |
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| Geology of the Kelso Junction Quadrangle Iron County, Michigan By KENNETH L. WIER GEOLOGICAL SURVEY ...cooperation with the Geological Survey Division Michigan Department of Conservation tUtIV JUN271967 S...metarhyolite porphyry.________________________ Amasa Formation.____________________________________________...Metadiabase associated with West Kiernan sill and Hemlock Formation._ ________________________________________...geology____-_____-__-___-__-___--____-_______-_-_-______ Iron.________________________________________________________ |
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| Geology of the Kiernan Quadrangle Iron County Michigan By JACOB E. GAIR and K. L. WIER GEOLOGICAL...relations______________________________________________ Hemlock formation____________________________________________... CONTENTS Middle Precambrian rocks-Continued Hemlock formation-Continued Biotite-, hornblende-, and...PLATE 1. Geologic map of Kiernan quadrangle, Iron County, Mich. 2. Map showing relationship of magnetic...geology in vicinity of Michigamme Mountain, Iron County, Mich. 3. Geologic cross sections and magnetic |
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| Geology of the Lake Mary Quadrangle Iron County, Michigan By RICHARD W. BAYLEY GEOLOGICAL SURVEY...cooperation with the Geological Survey Division Michigan Department of Conservation UNITED STATES GOVERNMENT...1919Geology of the Lake Mary quadrangle, Iron County, Michigan. Washington, U. S. Govt. Print. Off., 1959...Division, Michigan Dept. of Conservation. Bibliography: p. 108--110. 1. Geology-Michigan-Iron Co. Iron County...County, Michigan. (Series) QE75.B9 no. 1077 ----Copy 2. 1. Title: Lake Mary quadrangle, 557.74975 G |
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| and Ore Deposits of the Iron River-Crystal Falls District, Iron County Michigan GEOLOGICAL SURVEY PROFESSIONAL...of the Michigan Department of Conservation PAPER 570 Geology and Ore Deposits of the Iron River-Crystal...River-Crystal Falls District, Iron County Michigan By H. L. JAMES, C. E. BUTTON, F. J. PETTIJOHN, and K. L...cooperation with the Geological Survey Division of the Michigan Department of Conservation UNITED STATES GOVERNMENT...________ Hemlock Formation___________________ Greenstone in the Hemlock FormationBird Iron-Bearing Member |
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| Stratigraphy of Pre-Keweenawan Rocks in Parts of Northern Michigan GEOLOGICAL SURVEY PROFESSIONAL PAPER 314-C Prepared...cooperation with the Geological Survey Division, Michigan Department of Conservation Stratigraphy of...of Pre-Keweenawan Rocks in Parts of Northern Michigan By HAROLD L. JAMES SHORTER CONTRIBUTIONS GEOLOGICAL...cooperation with the Geological Survey Division, Michigan Department of Conservation UNITED STATES GOVERNMENT...Goodrich quartzite._ ______ Hemlock formation __________ Fence River formation._ Amasa formation__ ________ |
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| Geology of the Florence Area, Wisconsin and Michigan GEOLOGICAL SURVEY PROFESSIONAL Prepared under...Wisconsin Geological and Natural History Survey; Michigan Department of Conservation^ Geological Survey... Geology of the Florence Area, Wisconsin and Michigan By CARL E. DUTTON GEOLOGICAL SURVEY PROFESSIONAL...Wisconsin Geological and Natural History Survey; Michigan Department of Conservation, Geological Survey...________________________________ Discovery and mining of iron ore_________________ Previous geologic work____ |
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| Economic Vol. 68, 1973, pp. 934-959 Precambrian Iron-Formations of the United States * R. W. B^YLE¾^m)...The thickest and most extensive Precambrian iron-formations of the United States are in the Lake...Superior region, in Minnesota, Wisconsin, and Michigan. Thinner units occur within the Precambrian cores...of Colorado, New Mexico, and Arizona. The major iron-formations in the Menominee, Marquette, Gogebic...about 2 b.y. Lithologic associationsand detailed iron-formation stratigraphy,however, differ greatly from |
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| WALCOTT, DIRECTOR THE CMSTAL FALLS IRON-IARING DISTRICT OF MICHIGAN liY J. MORGAN CLEMENTS and HENRY...clay slate with analyses of other clay slates. and iron ores ferruginous chert, and ore bodies .. Siderite-slate...Thickness Ore deposits General description of Mansfield mine deposit Relations to surrounding beds 64 65 66...concentration 68 Exploration 73 69 70 72 —The Hemlock formation 73 Distribution, exposures, and topography...Continued. I'agn. Normal scdiinontaiit^s (if the Hemlock formation Economic products Building and ornamental |
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| Michigamme Formation and Goodrich Quartzite, Northern Michigan Regional Stratigraphic Implications and Suggested...Michigamme Formation and Goodrich Quartzite, Northern Michigan Regional Stratigraphic Implications and Suggested...Michigamme Formation and Goodrich Quartzite, northern Michigan: regional stratigraphic implications and suggested...Geology, Stratigraphic Proterozoic. 2. Geology Michigan. 3. Michigamme Formation (Mich. and Wis.). 4....Michigamme Formation R4 Slate members R4 Bijiki Iron-formation Member R7 Drill hole descriptions R7 Clark |
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| UNDERGROUND 10 Winter visitors enjoy underground mine tours, mineral museums, and limestone caverns. By...By Jim Landon THE MINERALS THAT MADE AMERICA 36 Iron, copper, lead and zinc transformed the United States...By Steve Voynick ROCK & GEM KIDS 48 46 THE HEMLOCK CLAIMS 48 World-class sources rich in history and...called a “skull”. Source: Keweenaw Peninsula, Michigan (3 x 2 x 1.5 inches) (Heritage Auctions photo/HA... Rock & Gem Winter Visitors Enjoy Underground Mine Tours, Mineral Museums and Limestone Caves Story |
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| Geology of Central Dickinson County Michigan GEOLOGICAL SURVEY PROFESSIONAL Prepared in cooperation...Division^ Michigan Department of Conservation PAPER 310 Geology of Central Dickinson County Michigan By...cooperation with the Geological Survey Division, Michigan Department of Conservation UNITED STATES GOVERNMENT...relations__ Conditions of deposition._-_____-_-__ Vulcan iron-formation.___.______________ Description ________________________...Continued Baraga group._____________________________ Hemlock formation. ____________________ Michigamme sla |
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| Belatlre age* of the crystalline roik* ........ 12 Hemlock green tchlat* (ago uncertain) ........... 13 ...aagnetie anomalies of f. 42 I. t &. 30 ¥., Diekimso* County, Illchigan *r r. j. Introduction Scop* and purpose...work done la T. 42 £,, R. 30 W. t DickinseB County, Michigan, during the turner of 1948. This study is...v Norway j EXPLANATION rm; " -^r<' ^- *% IRON co, A.orfttA ^ t^^T." * *.- S^ ' & #: W^*k^..."frein Range, Michigan ^a,v && ^rr S.: '* .>v v^ N ANOICKINSOncQUNTICS, L Index mqp of Iron an^ OicKJnfwr |
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| district of Michigan 33 35 35 Copper mining on Isle Eoyal and elsewhere Marquette iron district Menominee...39 iron district Crystal Falls, Florence, and Iron River Gogebic iron district Vermilion iron district...Mesabi iron district Accounts of the district before Opening and development Cuyuna 37 39 iron districts...42 44 iron district Baraboo iron district Less important developments 45 ., 45 Clinton iron ores...ores of Dodge County, Wis 45 Paleozoic iron ores in western Wisconsin Iron ores of the north .''hore of |
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| 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 |
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| THE VOLCANICS OF THE MICHIGAMME DISTRICT, OF MICHIGAN (PRELIMINARY). THIS name is given to a series of...volcanic rocks occurring on the Upper Peninsula of Michigan, between Townships 42 and 47 N., and Ranges 30...tributaries, the Fence (Mitchigan), the Deer, and the Hemlock Rivers. Previous work in this area.-The chief interest...occurrence of iron ores in the sedimentary rocks associated with the volcanics. The iron deposits first...Major T. B. Brooks in his report on the iron-bearing rocks of Michigan.' Apparently little attention was paid |
 | | Journal (article/letter/editorial) |
| Hise' describes the geology of the Lake Superior iron ore deposits. The general succession of formations...formation). bearing formation). Biwabik formation (iron- (iron-bearing formation.) Palms formation (quartzbearing...porphyries, and greenstones. Soudan formation (the iron-bearing formation). Ely greenstone, an ellip I...basic igneous and largely volcanic rock. T" The Iron-Ore Deposits of the Lake Superior Region," by C...formation into three parts: (a) upper slate member, (b) iron-bearing member, (c) lower slate member. Ishpeming |
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| is attached. The liquid is boiled down in large iron pots to the required thickness and then sugared...as a means of sudden cooling. The French, of the County of Madawaska, are the largest manufacturers of...sugar, and there is but little other used in that County. ver may In the bright warm April common frequently...been employed as a hedge in some portions of York County, but has not been observed elsewhere. In the Northern...) plant in the Province, not only in the John county, where interior but in St. 13 the rocky barrens |
 | | Journal (article/letter/editorial) |
| or equivalent Middle pre-Cambrian(Huronian) rocks Iron-formation shown in solid black Staurolite or equivalent...MENOMINEE GENERALIZED GEOLOGIC MAP OF NORTHERN MICHIGAN, SHOWING METAMORPHIC ZONES BULLETIN OF THE GEOLOGICAL...REGIONAL METAMORPHISM IN THE PRECAMBRIAN OF NORTHERN MICHIGAN BY HAROLD L. JAMES ABSTRACT Precambrian rocks...an area of about 7500 square miles in northern Michigan. Of this area, approximately 3300 square miles...the Huronian sedimentary rocks, especially in the iron formations and the graywackes and slates, and in |
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| (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 |
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| GAS RECENT INNOVATIONS John C. Osmond LAND MICHIGAN 1100 Ring Building, Member— Audit Bureau of... of Minerals Analysis, Policy and National Mine Health and Safety Academy and the remainder of...Federal Mine Safety and Health Act of 1977 and its standards to working conditions on mine sites and...mines where the responsible employer is neither a mine operator nor an independent contractor. In clarifying...construction facilities to OSHA unless the borrow pit is on mine property. Carter would increase U.S. wilderness |
 | | Journal (article/letter/editorial) |
| entrance and arch of the Palermo mine, North Groton, Grafton County. Rob Lawrence photo, courtesy Bob...at 15:01 05 January 2015 LOCATIONS BY COUNTY Belknap County Alton area: arsenopyrite, galena, quartz...occurrence is particularly noteworthy for Carroll County Albany, Blackberry Crossing (includes the Moose...epidote (microcrystals), fluorite (crystals), hematite (microcrystals), magnetite (microcrystals), manganocolumbite...tall, Government Gravel pit, North Conway, Carroll County. Jeff Scovil specimen and photo. Downloaded by |
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| Developments in Precambrian Geology 6 IRON-FORMATION: FACTS AND PROBLEMS DEVELOPMENTS IN PRECAMBRIAN...Plate Tectonics 5. Y.P. MEL’NIK Precambrian Banded Iron-formations. Physicochemical Conditions of Formation...Formation DEVELOPMENTS IN PRECAMBRIAN GEOLOGY 6 IRON-FORMATION FACTS AND PROBLEMS Edited by A.F. TRENDALL...b l i c a t i o n Dai:, Main entry under title: Iron-formation, facts and problems. (Developments in...c) I n c l u d e s bibliograrhies ;rd index. 1. Iron ores. I. Trendall, A. F. (Alec FraEcis) 11. Morris |
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| of Geochemistry ' * Chapter W. Chemistry of the Iron-rich Sedimentary Rocks GEOLOGICAL SURVEY PROFESSIONAL...FLEISCHER, Technical Editor Chapter W. Chemistry of the Iron-rich Sedimentary Rocks By HAROLD L. JAMES GEOLOGICAL...PAPER 440-W Chemical composition and occurrence of iron-bearing minerals of sedimentary rocks, and composition...distribution, and geochemistry of ironstones and iron-formations UNITED STATES GOVERNMENT PRINTING OFFICE..._________ ___________________ Iron minerals of sedimentary rocks __ ______ Iron oxides __ _______________________ |
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| reviewed: After describing the Gillis copper mine in Person county, North Caro lina, the earliest discovered...as follows: “ The rock immediately investing the mine is the altered slate belonging to the Taconic system...dolerite as being common over parts of Granville county. Professor Kerr refers the rocks of certain parts...by Kerr and Hanna in 1887, the Person-Granville county area is grouped as the northernmost part of the...description of the iron ore deposits in the northwestern part of Granville county, Mr Nitze ]| makes |
