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| CIRCULAR 153 GEOLOGY OF THE NORTHERN CRYSTAL FALLS AREA IRON COUNTY, MICHIGAN By F. J. Pettijohn Prepared with...cooperation of the Geological Survey Division Michigan Department of Conservation UNITED STATES DEPARTMENT...CIRCULAR 153 GEOLOGY OF THE NORTHERN CRYSTAL FALLS AREA IRON COUNTY, MICHIGAN By F. J. Pettijohn REPRINTED...Greenstones.............. Footwall strata ............ Iron-formation ............ Hanging-wall strata. ....................... Stratigraphy ................ Iron-formation ............ Breccia-graywacke bed .. |
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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..._______ Greenstone in the Hemlock FormationBird Iron-Bearing Member.._________ Thickness and relations |
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| 1950 PROGRESS OF GEOLOGIC WORK IN IRON AND DICKINSON COUNTIES, MICHIGAN By Carl E. Button PREPARED IN COOPERATION...COOPERATION WITH THE GEOLOGICAL SURVEY DIVISION MICHIGAN DEPARTMENT OF CONSERVATION UNITED STATES DEPARTMENT... PROGRESS OF GEOLOGIC WORK IN IRON AND DICKINSON COUNTIES, MICHIGAN By Carl E. Button PREPARED IN COOPERATION...COOPERATION WITH THE GEOLOGICAL SURVEY DIVISION MICHIGAN DEPARTMENT OF CONSERVATION CONTENTS Page Introduction........... Program in Iron County ...................... Iron River-Crystal Falls district'......... General |
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| GEOLOGY OF THE NORTHERN PART OF THE IRON RIVER DISTRICT IRON COUNTY, MICHIGAN By H. L. James and C. E. Dutton...COOPERATION WITH THE GEOLOGICAL SURVEY DIVISION MICHIGAN DEPARTMENT OF CONSERVATION UNITED STATES DEPARTMENT...Siltstone-sericitic slate oo Black graphitic slate • . Iron-formation Hanging-wall strata Magnetic ironstone...Generalized geologic map of the northern part of the Iron River district • . . • • In pocket z. Columnar...stratigraphic chart for the northern part of the Iron River district • • • . • • • . . . . . . . . • |
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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...group______------___ Dunn Creek slate__________ Riverton iron-formation ______ Hiawatha graywacke.________ Stambaugh |
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| GEOLOGY OF THE CENTRAL PART OF THE IRON RIVER DISTRICT IRON COUNTY, MICHIGAN By Carl E. Button Prepared with...cooperation of the Geological Survey ]>ivision Michigan Department of Conservation UNITED STATES DEPARTMENT... GEOLOGY OF THE CENTRAL PART OF THE IRON RIVER DISTRICT IRON COUNTY, MICHIGAN By Carl E. Dutton CONTENTS Page................ Footwall strata.................. Iron-formation.................. Hanging-wall strata...in the south-central part of Iron River district, Iron County, Michigan............................. |
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| MAGNETIC SURVEY AND GEOLOGY OF THE STAGER AREA, IRON COUNTY MICHIGAN By S. E. Good and F. J. Pettijohn Prepared...cooperation of the Geological Survey Division Michigan Department of Conservation UNITED STATES DEPARTMENT... MAGNETIC SURVEY AND GEOLOGY OF THE STAGER AREA IRON COUNTY, MICHIGAN By 8. E. Good and F. J. Pettijohn CONTENTS...1. 2. Geologic map of the Stager area, Iron County, Michigan...........................................pocket Magnetic map of the Stager area, Iron County, Michigan. In two parts. (This map shows the magnetic |
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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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| AND SOUTHEASTERN PARTS OF THE IRON RIVER DISTRICT IRON COUNTY, MICHIGAN By Harold L. James and Kenneth...cooperation of the Geological Survey Division, Michigan Department of Conservation WASHINGTON, D. C....AND SOUTHEASTERN PARTS OF THE IRON RIVER DISTRICT. ffiON ·COUNTY, MICHIGAN By Harold L. James and Kenneth...• • • • • • Footwall strata..................... Iron-f'orma tion. • • • • • • • • • • • • • • • • • •...w••••••• Section 24, T. 43 N., R. 35 w....... Spies mine area ( EisEt) •••••• ·• • • .Swt· sec. 24.. • • |
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| MAY, 1954 SEDIMENTARY FACIES HAROLD OF No. 3 IRON-FORMATION L. JAMES CONTENTS PAGE Abstract .................................... 239 The term "iron-formation" . .................................................... 239 240 The Precipitation of iron ................................................................................. 244 facies of iron-formation .............................................................. 272 The problemof the chert .............................................. 273 |
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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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| MARCH 1951 IRON FORMATION AND ASSOCIATED ROCKS IN THE IRON RIVER DISTRICT, MICHIGAN By HAROLD L. JAMES...JAMES ABSTRACT The iron formation of the Iron River district is part of a Precambrian sequence of strata...strata characterized by a high iron content and varied mineralogy. The iron formation, where unoxidized...interlaminated chert and siderite. It is underlain by a graphitic slate containing about 20 per cent iron in the...finely disseminated pyrite. Graywacke overlies the iron formation with at least local disconformity; this |
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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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| 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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| 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...geology____-_____-__-___-__-___--____-_______-_-_-______ Iron.________________________________________________________...the western part of the northern peninsula of Michigan._______ 2. Generalized areas of outcrops, swamps... GEOLOGY OF THE KELSO JUNCTION QUADRANGLE IRON COUNTY, MICHIGAN By KENNETH L. WIER ABSTRACT The Kelso Junction |
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| pyromorphite in the Montezuma District, Summit County (Eckel et al., 1997): 1. “Pyromorphite, galena...yellowgreen transparent pyromorphite occurs with iron oxide minerals and barite.” 3. “Green pyromorphite...flat-topped mountain on the eastern side of Summit County, in the Montezuma Mining District (Figure 1). Access...the possession of Summit County, at which point it was offered up by the county to be incorporated back...of these observed artifacts are consistent with mine development in the late 1890s and early 1900s (Twitty |
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| WALCOTT, DIRECTOR THE CMSTAL FALLS IRON-IARING DISTRICT OF MICHIGAN liY J. MORGAN CLEMENTS and...I. Chapter tiF Van Hise xvii xxix the Crystal Falls district, isy J. Morgan Clements. 11 Introdiction... and iron ores ferruginous chert, and ore bodies .. Siderite-slate, chert, ferruginous chert, Rjlations...Thickness Ore deposits General description of Mansfield mine deposit Relations to surrounding beds 64 65 66...Microscoiiical character of the ores and associated chert bands Origin of the ore deposits Conditions favorable |
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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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| Geology of the Little Commonwealth area Florence County, Wisconsin by Robert W. Johnson, Jr..> /*?«2 V...of the Little Commonwealth exploration, Florence County, Wisconsin . < Figure 1* Map shoving location...exploration and generalized geology of the Crystal Falls, Michigan, and Florence, Wisconsin, area ..........martitic quartzite, showing distribution of martite and iron silicates .*.....««»......«... / 12, 64 Photomicrograph........« ..«., 76 15. Photograph of segmented chert with reaction rim of stilpnomelane 16. ...,«. |
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| 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 |
 | Carlson, Shawn M., Laughlin-Yurs, Cullen, Olds, Travis A., Fountain, Daniel R., Mills, Owen P. (2017) Secondary Lead Minerals from the Copps Mine, Gogebic County, Michigan. Rocks & Minerals, 92 (2) 166-171 doi:10.1080/00357529.2017.1252638 | Journal (article/letter/editorial) |
| Minerals from the Copps mine Figure 1. Entrance to an adit on the Copps mine property. The white material...snow. Shawn Carlson photo (2015). Gogebic County, Michigan SHAWN M. CARLSON CULLEN LAUGHLIN-YURS DANIEL...FOUNTAIN OWEN P. MILLS 245 Jule Lake Road Crystal Falls, Michigan 49920 shawncarlson@hotmail.com 167 East...Negaunee, Michigan 49866 dfountain906@gmail.com 166 ROCKS & MINERALS 513 Iron Street Norway, Michigan 49870...Analysis Laboratory Michigan Technological University 1400 Townsend Drive Houghton, Michigan 49931 opmills@mtu |
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| Geology of the Menominee Iron-Bearing District Dickinson County, Michigan and Florence and Marinette...Division, Michigan Department of Conservation PAPER 513 Geology of the Menominee Iron-Bearing District...District Dickinson County, Michigan and Florence and Marinette Counties, Wisconsin By R. W. BAYLEY, C...cooperation with the Geological Survey Division, Michigan Department of Conservation 'I UNITED STATES...___________________ _ Vulcan Iron-Formation _____________ _ Traders and Curry Iron-Bearing Members_ Brier Slate |
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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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| Lithology and geologic setting of Lower Proterozoic iron-formations in parts of northern Wisconsin by Carl...magnetic sedimentary units, mostly lean magnetic iron-formations, that can be traced for long distances...the first half of the 1900 f s in exploration for iron ores. Although no exploitable orebodies have been...that useful body of data. Interest in exploring for iron ore in the project area during 19101914 led to geologic...the maps for Wisconsin and the adjacent areas of Michigan as well as field notes, have been available and |
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| Geology of the Kiernan Quadrangle Iron County Michigan By JACOB E. GAIR and K. L. WIER GEOLOGICAL...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...profiles in vicinity of Michigamme Mountain, Iron County, Mich. CONTENTS v PLATE 4. Magnetic pro~s...'i:ron County, Mich. 5. Total-intensity aeromagnetic profiles across Kiernan quadrangle, Iron County, Mich |
