 | | 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...in the Brule River area ___________ Saunders Formation ______________________ Description. ___________________________ |  | | Journal (article/letter/editorial) | | distinct pathways of pyrite formation. Framboids form indirectly via iron monosulphides, whereas euhedra...polyframboids. Abstract Key words Pyrite - pyrite formation - framboids Introduction The spherical aggregates...has been important in determining the time of formation of many ore deposits, the biogenic or inorganic...in magmatic rocks, through indirect biogenic formation (e.g. Vallentyne, 1963; Kalliokoski and Cathles...(1984). The formation and stability of pyrite framboids have been explained in terms of formation processes |  | | Journal (article/letter/editorial) | | Moore Archaean lode gold mineralisation in banded iron formation at the Kalahari Goldridge deposit, Kraaipan...Springer-Verlag 2006 Abstract The Kalahari Goldridge Mine is located within the Archaean Kraaipan Greenstone...5 km within approximately N–S striking banded iron formation (BIF). The stratabound ore body is hosted...first generation consists of ladder-vein sets (group IIA) preferentially developed in centimetre-scale...generation consists of large quartz–carbonate veins (group IIB), which locally crosscut the entire ore body |  | | Book | | imprint of The Rowman and Littlefield Publishing Group, Inc. 4501 Forbes Blvd., Ste. 200 Lanham, MD 20706...trademarks of The Rowman and Littlefield Publishing Group, Inc. Distributed by NATIONAL BOOK NETWORK Copyright...Copyright © 2018 The Rowman and Littlefield Publishing Group, Inc. TOPO! Maps copyright © 2018 National Geographic...Reserved. Maps © The Rowman and Littlefield Publishing Group, Inc. All photos by Robert Beard unless otherwise...author and The Rowman and Littlefield Publishing Group, Inc. assume no liability for accidents happening |  | | Journal (article/letter/editorial) | | Department of Geological Sciences, University of Michigan, Ann Arbor, MI 48105, United States Departamento...world ocean before the GOE should have impeded formation of MVT deposits by the widely accepted model for...Supergroup (modified from Martini et al., 1995). formation of MVT deposits by the widely accepted model in...Witwatersrand Supergroups and underlying Dominion Group (Eriksson et al., 2001a,b). MVT mineralization in...and Malmani Subgroups, respectively, and banded iron formation in the overlying Penge, Kuruman and related |  | | Journal (article/letter/editorial) | | and siderite in the Dayrock mine, in the Atlas vein of the Carbonate Hill mine (Fryklund, 1964), and at...from old mine dumps, whereas most calcite-dominant veins were sampled in place. Samples from mine walls...1), and both vein types may occur at the Amador mine (Campbell, 1960). Mineralogy and paragenesis Ankerite-dominant...ankerite-dominant, quartz-ankerite vein assemblages. A. Bullion mine. B. White Cap deposit (dark mineral, ankerite; light...recognized by Grieco (1981) at the nearby Wonderful mine. TABLE 1. Carbon and Oxygen Isotope Ratios of Minerals |  | | Journal (article/letter/editorial) | | Journal of Earth Sciences (2003) 50, 669–690 Channel iron deposits of the Hamersley Province, Western Australia...Australia. The fluvial goethite–hematite channel iron deposits (CID) of the Pilbara region of Western...the ‘Robe Pisolite’, represent a major source of iron ore mined in the Hamersley Province. The CID occupy...KEY WORDS: channel iron deposits, goethite, hematite, iron ore, Marillana Formation, ooidal, Robe Pisolite...types of iron ores are mined in the Pilbara, mainly for export: (i) the banded iron-formation (BIF)-hosted |  | | Report (volume) | | Gold Deposits of the Big Canyon Area, El Dorado County, California AVAILABILITY OF BOOKS AND MAPS OF...Gold Deposits of the Big Canyon Area, El Dorado County, California By J. THOMAS NASH Description of geology...gold deposits of the Big Canyon Area, El Dorado County, California. (U.S. Geological Survey bulletin ;...ores-California-EI Dorado County. 2. Geology, Stratigraphic-Paleozoic. 3. Geology-California-EI Dorado County. 4. Geoc...Geochemistry-California-EI Dorado County. I. Title. II. Series. QE75.B9 no. 1854 557.3 s [553.4'1'0979441] |  | Huberty, J. M., Konishi, H., Heck, P. R., Fournelle, J. H., Valley, J. W., Xu, H. (2012) Silician magnetite from the Dales Gorge Member of the Brockman Iron Formation, Hamersley Group, Western Australia. American Mineralogist, 97 (1) 26-37 doi:10.2138/am.2012.3864 | Journal (article/letter/editorial) | | Dales Gorge Member of the Brockman Iron Formation, Hamersley Group, Western Australia Jason M. Huberty...magnetite from banded iron formation (BIF) in the Dales Gorge Member of the Brockman Iron Formation, Hamersley...Hamersley Group, Western Australia. Magnetite mesobands typically consisting of individual ~100 µm microlaminae...the BIF oxide precipitate was not chemically pure iron oxyhydroxide/oxide. Magnetite domains display textures...in this BIF. Silician magnetite is the dominant iron oxide in the Dales Gorge BIF and is present in many |  | | Report (chapter) | | moderate occurrence of gold and promising platinum group element mineralization constitute the Archaean metal...abetted by supergene enrichment, as in the case of iron ores. Archaean cratons and the neighbouring mobile...storehouses of numerous metallic ores of Cr, platinum group elements (PGEs), Au, Fe, Mn, U, Cu, Pb and Zn. Apart...Aravalli – Bundelkhand Craton comprises (a) the Banded Gneissic Complex (BGC), and (b) the Bundelkhand...rocks, predominantly, schists, gneisses, banded iron formation (BIF), mafic volcanics and quartzites. Three |  | | Journal (article/letter/editorial) | | Copyright © 2003 Elsevier Science Ltd Printed in the USA. All rights reserved 0016-7037/03 $22.00 ⫹ .00 Pergamon...Little Building, The University of Michigan, Ann Arbor, MI 48109-1063, USA 2 U.S. Geological Survey, Denver...Denver Federal Center, MS 973, Denver, CO 80225, USA (Received November 13, 2001; accepted in revised form...carbonate to methane. The latter is documented by formation of carbonate veins enriched in 13C (up to 4.5‰)...microscope and electron microprobe at the University of Michigan. Chemical compositions of secondary minerals were |  | | Report (issue) | | 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 __ _______________________ |  | | Book | | Provinee, Missouri, Arkansas, Kansas and Oklahoma, USA D.L. Leaeh ........................................Valley-Type Mud Volcano Mass at Deeaturville, Missouri, USA R.A. Zimmermann and M. Sehidlowski . . . . . . ..... . . 228 Mississippi Valley-Type, Sedex, and Iron Deposits in Lower Cretaeeous Roeks of the Basque-Cantabrian...mentioned above are two end members within the broad group of sediment-hosted zine-Iead deposits. Sangster...not only form fluorite and barite ores, but also iron deposits as in the Basque-Cantabrian basin (Velasco |  | | Journal (article/letter/editorial) | | Tempe, AZ 85287, USA Lawrence Livermore National Laboratory, Livermore, CA 94550, USA d Institut für Mineralogie...Biochemistry, Arizona State University, Tempe, AZ 85287, USA b c a r t i c l e i n f o Article history: Accepted...upwards into a ~20 m interval of sideritic banded iron formation (BIF) containing black shale/marl couplets...the overlying Dales Gorge Member, Brockman Iron Formation (Trendall et al., 2004). A Model 1 age indicates...indicate it is not likely that metamorphism or sulfur/iron metasomatism (inferred from the presence of chlorite |  | | Journal (article/letter/editorial) | | Washington, 5251 Broad Branch Road, Washington DC 20015, USA Received 23 August 2004; received in revised form...magmatism, high sea levels and deposition of banded iron formations (BIF) on the trailing margins of the...with a NMDF signal N 0.4x are hosted by 2.47 Ga banded iron formations (BIF) of the Brockman Supersequence...pointed out that adsorption of phosphorous onto iron oxides deposited as BIF during the Late Archean...to changing relative sea levels culminating in formation of the Earth’s first supercontinent by 2.4 Ga |  | | Catalog/List | | Quartz crystals is sitting on a highly unusual base: banded Argentinian Fluorite in a riot of colors – yellow...2009 • 1:00 PM CT 5 41003 RUTILATED QUARTZ GROUP Novo Horizonte, Bahia, Northeast Region, Brazil...CELESTITE Holloway Quarry, Berlin Township, Monroe, Michigan, USA This classic Celestite matrix specimen was purchased...Crystal Peak area, Park and Teller Cos., Colorado, USA Three dark smoky Quartz crystals are rising from...Laumontite. This is a fine specimen from this classic formation, with distinct well defined pseudomorphs. Excellent |  | | Journal (article/letter/editorial) | | with the observedrelationships. Subsequentto formation of the surrounding 183 Amitsoq gneisses,all...lessabundant metasediments. The amphibolites, mainly banded, presumably represent metamorphosed matic lavas...of banded iron formation together with strata-bound sulphides ( Appel, 1979)* 2.3. The Isua iron formation...formation The iron formations extend throughout the supracrustal belt, with a major development of quartzite-magnetite...horizons of this facies occur elsewhere, in the banded amphibolites (Appel, 1980,1983). There are also |  | ANHAEUSSER, C. R., STETTLER, E., GIBSON, R. L., COOPER, G. R. J. (2010) A POSSIBLE MESOARCHAEAN IMPACT STRUCTURE AT SETLAGOLE, NORTH WEST PROVINCE, SOUTH AFRICA: AEROMAGNETIC AND FIELD EVIDENCE. South African Journal of Geology, 113 (4) 413-436 doi:10.2113/gssajg.113.4.413 | Journal (article/letter/editorial) | | of amphilxjlite, calc-silicate rock and banded iron-formation as well as unusual dark grey to black, irregular...consisting predominantly of amphibolite and banded iron formation. (30/01/2009, www.uni-muenster.de/GeoPalaeontologie/...and comprises upper amphibolite facies banded iron-formation and amphibolite xenoliths up to tens of...dolomitic Chuniespoort Group (lower Transvaal Supergroup). Cenozoic Kalahari Group sand and calcrete covers...confined to stream beds or, in the case of the banded iron-formations, low ridges. In addition to these |  | | Journal (article/letter/editorial) | | Paleoproterozoic Klipputs Member, Nelani Formation (Ghaap Group, Transvaal Supergroup, South Africa) and...rocks Klipputs Member Ghaap Group Paleoproterozoic glaciations Hamersley Group a b s t r a c t We present...Paleoproterozoic Klipputs Member (Nelani Formation, Ghaap Group, Transvaal Supergroup, South Africa) to...Hamersley Group above the Brockman Iron Formation (Western Australia) are younger than the Ghaap Group. Diamictite...Diamictite from the Doradale Formation in the Ghaap Group is constrained to be older than 2479 ± 22 Ma |  | | Book (edition) | | PUBLISHING 350 Main Street, Malden, MA 02148-5020, USA 9600 Garsington Road, Oxford OX4 2DQ UK 550 Swanston...Orthomagmatic deposits of chromium, platinum, titanium and iron associated with basic and ultrabasic rocks, 128...References, 347 Index, 379 Orthomagmatic copper-nickel-iron (-platinoid) deposits associated with basic and...presentation that I had tentatively suggested. Of this group I would like, to give sincere thanks to Dr Bladh...properties as well as having different modes of formation, uses and financial values. The second chapter |  | | Report (issue) | | gee eee Libor Parak Genetic Concepts Se Tron-Formation and Rea Meniliterous Sediments .. Gordon A. Gross...«2. of the eccisemene of the Misima Gold-Silver Mine, Papua New Guinea ........ .G. I. Wilson and R....C. Barwick eae ie Discovery. The McLaughlin Gold Mine, Napa, Yolo, and Lake Counties, California Fre...Carajas, probably the world’s largest direct-shipping iron deposit, was found, like most discoveries of a...of continuous interest. Geochemistry of platinum-group elements (PGE) forms an essential part in the recent |  | | Journal (article/letter/editorial) | | Copyright © 2001 Elsevier Science Ltd Printed in the USA. All rights reserved 0016-7037/01 $20.00 ⫹ .00 Pergamon...biogenic component may occur in Isukasia Banded Iron 15 Formation (␦ N ⬃ ⫺1.7‰), but further data are needed...history. The sediments analyzed are cherts, Banded Iron Formation (BIF hereafter), and one metapelite, sampled...Warrawoona group North Pole, Warrawoona group North Pole, Warrawoona group Marble Bar, Warrawoona group Dales...Dales Gorge Member Beasley River, Mount Bruce Group Western Australia Western Australia 2.5 3.2 3 |  | | Journal (article/letter/editorial) | | contrasting thermal history convergence) during the formation of the Greater Indian Landmass (Figure 2). (b)...granulite (RKG) domain, central domain of Sausar Group of rocks and the Southern Bhandara‐ Balaghat granulite...various locations are as follows: S, Stein, Hannah, Zimmerman, & Markey, 2006; 1, Sarkar, Trivedi, & Gopalan...multiple events, whereby a Mn‐oxide ore of the Sausar Group and its structurally underlying Proto‐Greater Indian...answers to these queries. periphery of the Sausar Group of rocks. The two pyroxene granulite In interpreting |  | Martin, A.P., Prave, A.R., Condon, D.J., Lepland, A., Fallick, A.E., Romashkin, A.E., Medvedev, P.V., Rychanchik, D.V. (2015) Multiple Palaeoproterozoic carbon burial episodes and excursions. Earth and Planetary Science Letters, 424. 226-236 doi:10.1016/j.epsl.2015.05.023 | Journal (article/letter/editorial) | | al., 2014; Papineau, 2010), interruption in iron formation deposition (Bekker et al., 2010; Isley and...2013). The former consists of the North Pechenga Group (Fig. 2), with four pairs of sedimentary- (c. 1...basement and is overthrust by the South Pechenga Group. The Onega Basin is a c. 3 km-thick succession that...Pilgujärvi Sedimentary Formation in the North Pechenga Group and the Zaonega Formation in the Onega Basin...et al., 1999). The Zaonega Formation and underlying Tulomozero Formation have carbonatecarbon isotope |  | | Journal (article/letter/editorial) | | the deep sea in the North Atlantic deep-water formation regions is consumed during the decomposition of...March 2008 FGL: Fayetteville Green Lake (New York, USA) Annu. Rev. Earth Planet. Sci. 2008.36:251-288....arose from a desire to better understand the formation mechanisms of sedimentary pyrite and their relationship...may result from Fe availability limiting pyrite formation (Calvert & Karlin 1991, Lyons & Berner 1992),...Under euxinic conditions the supply of reactive iron (i.e., phases of Fe that will react with free sulfide |
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