 | | Journal (article/letter/editorial) | | from Metamorphic and Igneous Rocks near Iron Mountain, Michigan by L. T. ALDRICH, G. L. DAVIS, and H. L...determined for minerals from an area in northern Michigan about 35 miles square. Granites, pegmatites, and...patterns of mineral ages. The area around Iron Mountain, Michigan, was particularly suitable for such a study...metamorphic rocks of the area around Iron Mountain, Dickinson County, Michigan. The recent demonstration by Hart...zircon Pb-Pb ages. AGES OF MINERALS, IRON MOUNTAIN, MICHIGAN 447 a) Baltimore Gneiss (Maryland) MINERAL |  | | Journal (article/letter/editorial) | | pre-Cambrian(Huronian) rocks Iron-formation shown in solid black Staurolite or equivalent Lower pre-Cambrian{"Archean")...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 |  | | Report (volume) | | 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 |  | | Report (issue) | | 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____ |  | | 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 |  | | Report (issue) | | 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 |  | | Journal (article/letter/editorial) | | Cold Iron "Gold is for the mistress-silvet for the maidCopper foi the craftsman cuntiina at his trade..."Good," said the Baron, sitting i i his hall, "But Iron-Cold lran-is master of them all." -Rudyard RAMON...24 November 2014 Marquctle, Michigan 49855 Specimen recovery in the Iron Country is still possible, and...15:24 24 November 2014 and Minerals o f igan's Iron Countrv w Upper Peninsula Downloaded by [UQ Library]...showing the Iron Country counties described in the text. In this article, the definition of Iron Country |  | | 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 |  | | 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 (article/letter/editorial) | | ......................... Granite of northern Michigan and Wisconsin............................................................................. Crystal Falls area..........................................1445 Map of Marquette and associated areas of Michigan.......................................... 1446...Wisconsin. The studies in Wisconsin and northern Michigan were conducted by Marsden and Tyler of the University...central Minnesota, and across Wisconsin and northern Michigan, and from the complex series of Keweenawan igneous |  | | Book (volume) | | the Atlantic Coast Fall Line, so named from the falls or rapids in rivers at places where they pass from...discovered Diamonds, the largest a pale yellow crystal of 4½ carats picked up near Morrow Station in Clayton...occasionally washed out of gold pans. Many other gem crystal species occur in pegmatite exposures, such as Aquamarine...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 |  | | Journal (article/letter/editorial) | | http://petrology.oxfordjournals.org/ at University of Michigan on September 9, 2015 ABSTRACT The nomenclature...HaFeALSiO, with up to two-fifths of the ferrous iron replaced by magnesium, up to one-sixth by manganese...to oneseventh of the aluminium replaced by ferric iron. Chloritoid crystallizes in both monoclinic and...chloritoids it is nearly parallel to (010). Replacement of iron by magnesium lowers the indices of refraction. With...chloritoid breaks down to iron cordierite+hercynite+ vapour at low pressures and to staurolite-f almandine+hercynite+vapour |  | | Journal (article/letter/editorial) | | Some Mineral Localities In Central Dickinson County, Michigan BY W A L D E N P. PRATT 2 1 Publication authorized...Dickinson County, in resulting peneplain was covered with the upper Peninsula of Michigan. Al- sediments...covered the area with a mantle of sand iron-bearing districts of Michigan being and gravel. Except for ridges...granite, most of the area Survey Division of the Michigan De- is now buried under glacial deposits that...in general, be described as a group of Archie of Iron Mountain, an enthusias- eastward-trending troughs |  | | Report (issue) | | 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 ________________________...geology__.___________________________ Definition of "iron ore"_--_-----------------History of mining and exploration |  | | Report (issue) | | subtidal-shelf deposition of Superior-type banded iron-formation . Richard W. Ojakangas Lower Proterozoic...arranged geographically, from the upper peninsula of Michigan and adjacent Wisconsin, to north central Wisconsin...Precambrian rapakivi massif in north Wisconsin, USA: Precambrian Research, v. 7, p. 287-324. Blackwelder...early Proterozoic (Precambrian X) of northern Michigan [abs.]: Geological Society of America, Ab¬ stracts...north and for chemical sediments, including the vast iron-formations for which the region is famed. The central |  | | Report (issue) | | 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...clay slate with analyses of other clay slates. and iron ores ferruginous chert, and ore bodies .. Siderite-slate...55 Magnetic lines Thickness Folding 1.56 Crystal Falls syncline Time of folding of tbo Upper Huronian...20, T. 45 N., R. 33 AV The Amasa area The Crystal Falls area 176 , 176 177 178 Character of the |  | | Journal (article/letter/editorial) | | Avenue, Pontiac, Michigan It was at one of last winter's meetings of the Michigan Mineralogical Society...six days which we had scheduled for Ishpeming, Michigan. Bob Markert and his associates came through in...Upper Peninsula Development Bureau of Michigan, Marquette, Michigan, and were well supplied with information...arrangements with the Michigan College of Mining and Technology at Houghton, Michigan, for a joint field...Robert Markert at 107 West Ridge Street, Ishpeming, Michigan. Visits were made to see the collections of Charles |  | | Journal (article/letter/editorial) | | Introduction DURINGthe past15 years,studiesof the major iron oredistricts andcopperdistrictsin theLakeSuperior...tectonicevolutionof the middlePrecambrian basin in which the great iron-formations were formed. Finally, I will comparethe...coherentregionalpicture nesota and in northern Wisconsin and Michigan. (Precambrian X) rocksform consistentwith the...geologyin MiddlePrecambrian Minnesota and northern Michigan. Recently pub- the surfacebedrockin much of easternMinnesota...geochronologyof northern and in northern Wisconsin and Michigan. Except in centralWisWisconsin(Van Schmuset al |  | | Report (issue) | | 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 |  | | Journal (article/letter/editorial) | | as a breakdown product of staurolite from Donegal, 237 Auburn mine, Michigan, stilpnomelane, 36I and M37...and M37 COGGAR (N.), anal. by, 468 Containers for iron-bearing melts, Pt-Fe alloys for, 271 Coombe Farm...Ethiopia and Italy, 63 Crystal Falls, Minnesota, stilpnomelane, 361 and M37 Crystal optics, theory of, I9...380 EGGLETON (R. A.) and CHAPPELL (l. W.), The crystal structure of stilpnomelane. Part III: Chemistry...dehrnite and lewistonite (both= francolite), 282 Falls of Rogie, Ross and Cromarty, djurleite, I7Z FARMER |  | | Journal (article/letter/editorial) | | 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 |  | | 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...E, regional deposits⎯Siderite. FULTON COUNTY FARMINGTON, W 6 mi. on Rte. 116 to the Rapatee No. 5 strip...mine⎯pyritized gastropods (Pennsylvanian age). GRUNDY COUNTY AREA: c Regional rd. and RR cuts and banks of Mason |  | | 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...E, regional deposits⎯Siderite. FULTON COUNTY FARMINGTON, W 6 mi. on Rte. 116 to the Rapatee No. 5 strip...mine⎯pyritized gastropods (Pennsylvanian age). GRUNDY COUNTY AREA: c Regional rd. and RR cuts and banks of Mason |  | | Journal (article/letter/editorial) | | meteorites, 736; - and WAINE (C. V.), The Angra dos Reis (iron) meteorite, 94; Metallographic study of hexahedrites...Insizwaite and niggliite, 794 Ca(Fe3+,A1)2SiO~ in iron-ore sinters, anal., X-ray, opt., 872 Cairngorm,...Coalingite, California, crystal structure, chem., 286 Coalingite-K, California, crystal structure, 286 COATS(J...ZANAZZI (P. F.), The crystal structure of dundasite, 564 Cohenite, Angra dos Reis (iron) meteorite, 94 Computer...birnessite, 493; Egypt, 235 Crystal Falls, Minnesota, stilpnomelane, 693 Crystal field splitting, calculation |  | | Report (issue) | | Test-Drilling The Penokean Orogeny in Minnesota and Upper Michigan A Comparison of Structural Geology U.S. GEOLOGICAL...MOREY The Penokean Orogeny in Minnesota and Upper Michigan A Comparison of Structural Geology By TIMOTHY...Morey. The Penokean orogeny in Minnesota and upper Michigan a comparison of structural geology / by Timothy... Plate tectonics. 5. Geology Michigan. 6. Geology, Structural Michigan. I. Morey, G.B. II. Hoist, Timothy...Timothy B. Penokean orogeny in Minnesota and upper Michigan a comparison of structural geology. 1991. III |
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