 | | 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...Rb-Sr ages for feldspar, muscovite, and biotite, K-Ar ages for hornblende, muscovite, biotite, and feldspar...700 m.y. (4) Biotite Rb-Sr and K-Ar ages and muscovite K-Ar ages were strongly modified by the equivalent...(lowest to highest): feldspar K-Ar, biotite K-Ar, muscovite K-Ar, biotite Rb-Sr, zircon U239-Pb2Ā°8, zircon |  | | 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 |  | | Book | | 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 |  | | 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...NoneĀ theless, with the aid of a good state or county map, plus local inquiries, the list could be helpful |  | | 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...Iron County, Michigan. (Series) QE75.B9 no. 1077 ----Copy 2. 1. Title: Lake Mary quadrangle, 557.74975 |  | | 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 |  | | Journal (article/letter/editorial) | | Racine (Scovil 1994), the pegmatites of Florence County (Koehier 1989) and the Wausau area (Falster 1987)...and datolite) found in the Upper Peninsula of Michigan also occur in Wisconsin. The major difference...zircon), particularly in the Wausau area of Marathon County (Falster 1987). Middle Proterozoic quartzites (1...and iron formations. A major iron range, the Gogebic Range, extends into Wisconsin from Michigan. The...out. Most are gneisses and amphibolites; some are iron formations, such as that worked near Black River |  | | Journal (article/letter/editorial) | | metapelitic rocks from the Michigamme Formatior: (Michigan, U.S.A.). Evidence, is presented to show that...here are the metamorphic rocks exposed in Iron County, Michigan (U.S.A.). These rocks have been described...and Attoh (1973). The metamorphic rocks include muscovite-biotite-chlorite schists, staurolitogarnet schists...raean (%) STD mean (%) :;TD Quartz Biotite Muscovite Chlorite Garnet Staurolite Andalusite Sillimanite...chlorite +8 KAISi, O s feldspar 7KAI~AISiaO~o(OH)2 muscovite + 6(Fe, Mg)sAl~Si,.Oxo(Olt)s chlorite (2) Staurolite-garnet |  | | Report (issue) | | 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 |  | | 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____ |  | | Report (issue) | | Geology of the Little Commonwealth area Florence County, Wisconsin by Robert W. Johnson, Jr..> /*?Ā«2 V...of the Little Commonwealth exploration, Florence County, Wisconsin . < Figure 1* Map shoving location...and generalized geology of the Crystal Falls, Michigan, and Florence, Wisconsin, area .................martitic quartzite, showing distribution of martite and iron silicates .*.....Ā«Ā«Ā»......Ā«... / 12, 64 Photomicrograph...Photomicrograph of quartzite with abundant tourmaline and muscovite ' 19. 81 .Ā»,,..,...Ā« 85 Photomicrograph of |  | | Journal (issue) | | at Silver Reef in southwestern Utahās Washington County (figure 1) is a very unique occurrence. The high-grade...perfect bound for just: $35.00 Postage $5.00 in the USA; $23 for foreign. Excalibur Mineral Corp Tel: 434-964-0875...shipping. Figure 5: Native copper crystals from Michigan, size 7 cm. In the late 1800ās, two prominent...exceptional Kongsberg silver and Langban native lead, Michigan native copper, Freiberg argentopyrite, Leadhills...book filled with historical work involving Oxford County, describing and intertwining its minerals, miners |  | | 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 |  | | Journal (issue) | | 6 (Right) - Sheet Copper ā Flambeau Mine (Rusk County, WI) Figure 2āDr. Weisās Personal Memorabilia...Figure 7āManganoan Calcite ā Montreal Mine (Iron County, WI). Figure 3 (left) - āWonderful World of...beautiful mineral specimens from the Montreal Mine (Iron County, Wisconsin). Most of the specimens came from...An unusual specimen from the Flambeau Mine (Rusk County, Wisconsin) is a sheet copper (figure 6). One of...selenite from the Bristol Mine, Crystal Falls, Michigan (figure 9). The deep blue color of an azurite |  | | Journal (article/letter/editorial) | | 55, 1960, pp. 150-175 CLAY MINERALS ASSOCIATED IRON S. W. BAILEY WITH THE LAKE SUPERIOR ORES AND...pocketsand fissuresin the Lake Superior iron ores,the oxidized iron-formation, and the associated altered...minerals in the Marquette, Gogebic, and Iron River districts of Michigan and are accompaniedby lesser amounts...amounts of nacrite, talc, pyrophyllite,1M and 2Mā¢ muscovite,lizarditc, clinochrysotile, Al-serpentine,dioctahedraland...hydrothermal environment. In contrast only kaolinitc, 1M muscovite, chlorite,nontronite,montmorillonite,talc, chamosite |  | | Report (issue) | | . . . . . . . . . . . . . . . . . . . . . . 1 County Listings. . . . . . . . . . . . . . . . . . . .... . . . . . . . 4 Mineral Localities Listed by County . . . . . . . . . . . . . . . . . . . . . . . .... . . . . . . . . . . . . . . . . . . 7 Beaver County . . . . . . . . . . . . . . . . . . . . . . . ... . . . . . . . . . . . . . . . . . 7 Box Elder County . . . . . . . . . . . . . . . . . . . . . . . .... . . . . . . . . . . . . . . . . . . 10 Cache County . . . . . . . . . . . . . . . . . . . . . . . |  | | Report (issue) | | 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 |  | | Report (volume) | | 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 |  | | 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 |  | | Report (issue) | | Uranium occurrences in non-sedimentary rocks of Michigan ............ 38 Table 8 Uranium occurrences in...Uranium occurrences in non-sedimentary rocks of Michigan.......................................43 Figure...introduction and/or dispersion of uranium: northwestern Michigan, northwestern North Carolina; a belt extending...deposit occurs as a thin seam in graphitic Cleburne County. The property is, about 11.2 SINE phyllite which...Location No. Source of information Fairfield County. Short distance northeast of East Village, on a |  | | Book (volume) | | Dahlonega Co. and Rabum Co., and ļ the McDuffie County Belt extending through portions of McDuffie, Warren...Sphalerite. BALDWIN COUNTY MILLEDGEVILLE, at state farmļ¾jasper. BANKS COUNTY COMMERCE, along Hwy. 59...along adjoining Co. lineļ¾rock crystal. BARROW COUNTY WINDER, along rd. to Jefferson and 1Ā½ mi. inside...Guide for Rock Hounds in the United States BARTOW COUNTY AREA, Saltpeter Cave, as floatļ¾jasper. CARTERSVILLE:...pitsļ¾Barite, Geodes, Goethite, Hematite, Limonite, Iron minerals; ļ area mines, as important producersļ¾Barite |  | | 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 |  | Parnell, John, Mark, Darren F., Frei, Robert, Fallick, Anthony E., Ellam, Rob M. (2014) 40Ar/39Ar dating of exceptional concentration of metals by weathering of Precambrian rocks at the PrecambrianāCambrian boundary. Precambrian Research, 246. 54-63 doi:10.1016/j.precamres.2014.02.012 | Journal (article/letter/editorial) | | of granites and pegmatites, and metasedimentary iron formations (Dufļ¬n, 1989; Avigad et al., 2005). These...chemistry. Iron deposits were exposed on the surface in many parts of the world, including USA, Canada,...Sweden, Iran and West Africa. So much Precambrian iron ore was eroded during the transgression that the...(Murphy and Ohle, 1968; Hausel, 1989). Many of these iron deposits are gold-bearing, some are strongly phosphatic...copper in Wisconsin (May and Dinkowitz, 1996), Michigan (Bornhorst, 2002) and Quebec (Sinclair and Gasparrini |  | | Report (volume) | | (Lower Precambrian) Rocks in Western Gogebic County, Michigan GEOLOGICAL SURVEY BULLETIN Work done in...Lower Precambrian) Rocks in 'estern Gogebic County, Michigan Jy ROBERT GORDON SCHMIDT GEOLOGICAL SURVEY...cooperation with the \ Geological Survey Division., Michigan \Department of Natural Resources Geologic description...(lower Precambrian) rocks in western Gogebic County, Michigan. (Geological Survey bulletin ; 1407) Bibliography:...Stratigraphic Pre-Cambrian. 2. Geology Michigan Gogebic Co. I. Michigan. Geological Survey Division. II. Title |  | | | | fractions. The more mafic fractions with darker iron- and magnesium-rich minerals crystallize first and...world. The Shieldās rich deposits of copper, nickel, iron, lead, zinc, gold, silver, cobalt, uranium, platinum...a : jagged irregular surface like that of broken iron. Test: Colour and the fact that it is sectile. Similar...nugget recorded is from Carson Hill, California, USA, weighing 72.78 kg. Transylvania, Romania; Roraima...a jagged, irregular surface like that of broken iron. Test: The colour of a fresh surface and malleable |
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