| | Journal (article/letter/editorial) | Minerals from Metamorphic and Igneous Rocks near Iron Mountain, Michigan by L. T. ALDRICH, G. L. DAVIS...on the patterns of mineral ages. The area around Iron Mountain, Michigan, was particularly suitable for...metamorphic rocks of the area around Iron Mountain, Dickinson County, Michigan. The recent demonstration...completely concordant. Examples of such rocks are the granite at Llano, Texas, and the Chestnut Flat pegmatite...Rb-Sr and zircon Pb-Pb ages. AGES OF MINERALS, IRON MOUNTAIN, MICHIGAN 447 a) Baltimore Gneiss (Maryland) | | | Report (issue) | Precambrian rocks__________________.________ Older granite gneiss and included bodies of quartzite and sc...group______------___ Dunn Creek slate__________ Riverton iron-formation ______ Hiawatha graywacke.________ Stambaugh...TABLE 1. Lithologic sequence of Precambrian rocks in Iron and Dickinson Counties, Michigan____________ __...Lower and Middle Precambrian rocks that occur in Iron and Dickinson Counties. A sequence of Lower Precambrian...basis of detailed mapping in central Dickinson County; it consists of metamorphosed sedimentary and volcanic | | | Journal (article/letter/editorial) | or equivalent Middle pre-Cambrian(Huronian) rocks Iron-formation shown in solid black Staurolite or equivalent...the Huronian sedimentary rocks, especially in the iron formations and the graywackes and slates, and in...post-Huronianpre-Keweenawan interval of orogeny and minor granite intrusion. At least one earlier period of major...(Algoman?) is recognized. In near-by areas of Wisconsin and Minnesota, a later thermal metamorphism is...of which lie in immediately adjacent parts of Wisconsin. The zones range in width from less than a mile | | | Report (issue) | Geology of the Florence Area, Wisconsin and Michigan GEOLOGICAL SURVEY PROFESSIONAL Prepared under...Survey; University Extension The University of Wisconsin Geological and Natural History Survey; Michigan... PAPER 633 Geology of the Florence Area, Wisconsin and Michigan By CARL E. DUTTON GEOLOGICAL SURVEY...Survey; University Extension The University of Wisconsin Geological and Natural History Survey; Michigan...________________________________ Discovery and mining of iron ore_________________ Previous geologic work____ | | | Journal (article/letter/editorial) | Sciences University of Wisconsin-River Falls 410 South Third Street River Falls, Wisconsin 54022 his is Wisconsinโs... breweries, bratwurst, and Packers football, Wisconsin also has a diverse geology and a history rich...forgotten, abandoned, and overgrown. In this respect, Wisconsin represents a frontier state for the mineral collector...Racine (Scovil 1994), the pegmatites of Florence County (Koehier 1989) and the Wausau area (Falster 1987)...summarizes and highlights what has been found in Wisconsin in the past 150 years and points the way to new | | | 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...broadly correlative units of the Chocolay Group in Wisconsin and Michigan and the Mille Lacs Group of Minnesota...shore of the Lake Superior in Michigan and Wisconsin, USA. The Chocolay Group was likely deposited in | | | Report (issue) | Geology of the Menominee Iron-Bearing District Dickinson County, Michigan and Florence and Marinette...Marinette Counties, Wisconsin GEOLOGICAL SURVEY PROFESSIONAL P-repared in cooperation with the Geological...513 Geology of the Menominee Iron-Bearing District Dickinson County, Michigan and Florence and Marinette...Marinette Counties, Wisconsin By R. W. BAYLEY, C. E. DUTTON, and C. A. LAMEY With a section on THE CARNEY...___________________ _ Vulcan Iron-Formation _____________ _ Traders and Curry Iron-Bearing Members_ Brier Slate | | | Journal (article/letter/editorial) | (Michigan, Ohio, Indiana, Kentucky, Illinois, Wisconsin, Missouri, and Iowa); the Midwest Federation of...Nebraska, Kansas, Minnesota, Iowa, Missouri, Wisconsin, Illinois, Indiana, Michigan, and Ohio), consistent...one hundred per state. Four statesโ Michigan, Wisconsin, South Dakota, and Arkansasโat the periphery of... Marion County, Tennessee Shepard 1835 1835 Nitromagnesite Nicajack Cave, Marion County, Tennessee...1835 1846 Schorlomite Magnet Cove, Hot Spring County, Arkansas Shepard 1846 1880/2002 Destinezite | | Childress, Tristan M., Simon, Adam C., Day, Warren C., Lundstrom, Craig C., Bindeman, Ilya N. (2016) Iron and Oxygen Isotope Signatures of the Pea Ridge and Pilot Knob Magnetite-Apatite Deposits, Southeast Missouri, USA. Economic Geology, 111 (8) 2033-2044 doi:10.2113/econgeo.111.8.2033 | Journal (article/letter/editorial) | Geologists, Inc. Economic Geology, v. 111, pp. 2033โ2044 Iron and Oxygen Isotope Signatures of the Pea Ridge and...Magnetite-Apatite Deposits, Southeast Missouri, USA* Tristan M. Childress,1,โ Adam C. Simon,1 Warren...and these results are compared with data for other iron oxide-apatite deposits to shed light on the origin...Francois Mountains terrane in southeast Missouri, USA, consists dominantly of early Mesoproterozoic (~1...volcanogenic breccias host several large-tonnage iron oxide-apatite (IOA) deposits, including Pea Ridge | | | Journal (issue) | pyromorphite in the Montezuma District, Summit County (Eckel et al., 1997): 1. โPyromorphite, galena...yellowgreen transparent pyromorphite occurs with iron oxide minerals and barite.โ 3. โGreen 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...Fluorite in Slate from the Bacco 424 Quarry, Iron County, Michigan Shawn M. Carlson 245 Jule Lake Road | | | Report (issue) | setting of Lower Proterozoic iron-formations in parts of northern Wisconsin by Carl E. Button Open-File...The geology of Precambrian rocks in northern Wisconsin has long been only generally known, largely because...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 | | | Report (issue) | 84 September 1950 PROGRESS OF GEOLOGIC WORK IN IRON AND DICKINSON COUNTIES, MICHIGAN By Carl E. Button...Washington 25, D. C. PROGRESS OF GEOLOGIC WORK IN IRON AND DICKINSON COUNTIES, MICHIGAN By Carl E. Button..................... Program in Iron County ...................... Iron River-Crystal Falls district'....Aeromagnetic survey of Iron County 1 1 1 2 2 2 2 2 2 3 4 4 Page Program in Dickinson County..................parts of central Dickinson County ... Aeromagnetic survey of Dickinson County.. Regional problems .... | | | Report (issue) | subtidal-shelf deposition of Superior-type banded iron-formation . Richard W. Ojakangas Lower Proterozoic...Brown Early Proterozoic tectonic style in centra! Wisconsin . R. S. Maass Lower Proterozoic stratified rocks... granites, and related rocks of southcentral Wisconsin, U.S.A. Eugene I. Smith The Proterozoic red quartzite...Proterozoic Symposium was held at the University of Wisconsin, Madison, on May 18-21, 1981, to dedicate the...Geophysics University of WisconsinโMadison 1215 W. Dayton St. Madison, Wisconsin 53706 During the past | | | Report (issue) | _______________________________ Michigan and Wisconsin.________:_____-____--_--__----_----_--___-__-..._______________________________ Michigan and Wisconsin,_____-_-________-_-__-_-_--------_-------_-_-_---___-----___--_-...________-_-___--____________________________ Wisconsin and Michigan. _______-_:________-_______-_----_...-__-___-_____________________ i _ Origin of the iron-formation.__.____---_-___-_-_------------------...---------------_---_-_---___--_-_-__-__________ Iron bacteria and algae__________-____--__--__---_-- | | | Report (volume) | Petrogenesis and tectonic setting of Middle Proterozoic iron oxide-rich ore deposits-An ore deposit model for...setting and ages of Proterozoic anorogenic rhyolite-granite terranes in the central United States, by P.K....General features of the St. Francois and Spavinaw granite-rhyolite terranes and the Precambrian metallogenic...Progress toward an occurrence model for Proterozoic iron oxide deposits-A comparison between the ore provinces...mapping and evaluation of the Pea Ridge iron ore mine (Washington County, Missouri) for rare-earth element | | | 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...Suasinliers the geologyof the Precambrianrocksin Wisconsin perior;theyalsocropoutdiscontinuously younger...coherentregionalpicture nesota and in northern Wisconsin and Michigan. (Precambrian X) rocksform consistentwith...the geochronologyof northern and in northern Wisconsin and Michigan. Except in centralWisWisconsin(Van | | | Report (issue) | (CaBSiO4OH) vesicle filling from a basaltic Houghton County lava flow. Small specks of native copper occur.................................................. Iron Deposits ยทยทยท- ยทยทยทยทยทยทยทยทยทยทยทยทยทยทยทยทยทยทยทยทยทยทยทยทยทยทยทยทยทยทยทยทยท...exceptionally fine, twinned analcite crystals from Houghton County ยทยทยทยทยทยทยทยทยทยทยทยทยทยทยทยทยทยทยทยทยทยทยทยท-ยทยท-ยทยทยทยทยทยท-ยทยท-ยทยทยทยทยทยทยทยท...ยทยทยทยทยท 41 2. Ankerite on siderite from Alpena County ยทยทยท-ยทยทยทยทยทยทยทยทยทยทยทยทยทยท-ยทยทยทยทยทยทยทยทยทยทยทยทยทยทยทยทยทยทยท 46 3....stalactitic limonite from Negaunee in Marquette County .............................................. | | | Book | ....243 APPENDIX II: MINERAL SPECIES LISTED BY COUNTY ...............................248 ABOUT THE AUTHORS...metamorphic equivalents. Thus basalt became greenstone; granite became granitic gneiss; sandstone was converted...Because of the discovery of the native copper and iron deposits in the Northern Peninsula, that region...contributions to our knowledge of the geology of the iron ranges remained scattered and fragmentary. The post-World...Northern Peninsula in both the Copper Country and the iron ranges by the U.S. and Michigan Geological Surveys | | | Report (issue) | . . . . . . . . . . . . . . . . . Greenstone-granite terrane . . . . . . . . . . . . . . . . . . . ...stratigraphic nomenclature in the Archean greenstone-granite terrane of northern Minnesota and adjoining Ontario...Superior region underlie parts of Minnesota, Wisconsin, and Michigan, very near the geographic center...the great iron-formations of the region. These rocks are bounded on the south, in Wisconsin, by a somewhat...region underlie parts of Minnesota, northern Wisconsin, and northern Michigan, very near the geographic | | | Report (volume) | Geology of the Lake Mary Quadrangle Iron County, Michigan By RICHARD W. BAYLEY GEOLOGICAL SURVEY...William, 1919Geology of the Lake Mary quadrangle, Iron County, Michigan. Washington, U. S. Govt. Print. Off...Bibliography: p. 108--110. 1. Geology-Michigan-Iron Co. Iron County, Michigan. (Series) QE75.B9 no. 1077 ----Copy...the Lake Mary quadrangle, Iron County, and adjacent area in Dickinson County, Mich. 3. Magnetic survey...and sees. 6-8 and 16-18, T. 42 N., R. 31 W., Iron County, Mich. 4. Magnetic survey in parts of sees. 19 | | | Report (volume) | 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 | | | Journal (article/letter/editorial) | Economic Vol. 68, 1973, pp. 934-959 Precambrian Iron-Formations of the United States * R. W. B^YLEยพ^m)...The thickest and most extensive Precambrian iron-formations of the United States are in the Lake...Lake Superior region, in Minnesota, Wisconsin, and Michigan. Thinner units occur within the Precambrian...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 | | | Report (volume) | deposits of some others, such as clay, coal, and iron ore, are mentioned only in general terms. One material...museum specimens. Some mineral aggregates, as clay, granite, limestone, sand, and sandstone, are included,...West Virginia... .Dr. I. C. White, Morgantown. Wisconsin.........Prof. W. 0. Hotchkiss, Madison. Wyoming...See Bauxite and Hallpysite. Asbestos. Tallapoosa County, with corundum deposits near Dudleyville; not found...commercial quantity or quality. Asphalt. Colbert County, small quantity has been shipped from near Leighton; | | | Report (volume) | ............................................ Wisconsin.................................................deposits of some others, such as clay, coal, and iron ore, are mentioned only in general terms. One material...specimens. Some mineral aggregates, such as clay, granite, limestone, sand, and sandstone, are included because...See Bauxite and Halloysite. Asbestos. Tallapoosa County, with corundum deposits near Dudleyville; not found...commercial quantity or quality. Asphalt. Colbert County, small quantity has been shipped from near Leighton; | | | Report (volume) | Range Super~oup in the . G0gebic Iron District, Michigan and Wisconsin GEOLOGICAL SURVEY Prepared in...Range Supergroup in the Gogebic Iron District, Michigan and Wisconsin By ROBERT GORDON SCHMIDT GEOLOGICAL...Precambrian X strata, particularly the Ironwood Iron-formation, and of the relationship between ore location...Range Supergroup in the Gogebic iron district, Michigan and Wisconsin. (Geological Survey bulletin ; 1460)...Stratigraphic--Precambrian. 2. Iron ores--Michigan--Gogebic Co. 3. Iron ores--Wisconsin--Iron and Ashland Cos. 4 |
|