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| Grunerite in the Metamorphosed Banded Iron Formation in Orissa, India Prasanta Kumar Nayak,1 Birendra...University, Bhubaneswar, India Abstract Banded iron formation (BIF) comprising high grade iron ore are exposed...pahar belt in the east of North Orissa Craton, India. The ores are multiply deformed and metamorphosed...The mineral assemblage in the BIF comprises grunerite, magnetite/martite/ goethite and quartz. Relict...carbonate phases are sometimes noticed within thick iron mesobands. Grunerite crystals exhibit needles to |
 | Mukhopadhyay, J., Gutzmer, J., Beukes, N. J., Hayashi, K.-I. (2008) Stratabound magnetite deposits from the eastern outcrop belt of the Archaean Iron Ore Group, Singhbhum craton, India. Applied Earth Science, 117 (4) 175-186 doi:10.1179/174327508x387492 | Journal (article/letter/editorial) |
| eastern outcrop belt of the Archaean Iron Ore Group, Singhbhum craton, India J. Mukhopadhyay1,2, J. Gutzmer*1...K.-I. Hayashi4 Most high-grade banded iron formation (BIF)-hosted iron ores are composed almost exclusively...exclusively of microplaty haematite and martite-textured haematite, i.e. pseudomorphs of haematite after magnetite...magnetite. Goethite abounds only where haematite-rich iron ores are affected by geologically recent lateritic...only as small, irregular remnants enclosed in martite. Although low-grade magnetite–carbonate ores have |
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| Magnetite Dyke in Precambrian Banded Iron Formation, Singhbhum Craton, India: Mineralogical and Chemical...Utkal University, Bhubaneswar, India Abstract Banded iron formation (BIF) of the Gorumahisani–Sulaipat–Badampahar...belt in Singhbhum Craton, India, consists predominantly of magnetite. This BIF is intruded by a magnetite...sulphide minerals while the host banded magnetite ore, a component of the BIF, shows thin lamination. The...sharp grain boundaries, which is different from the banded magnetite that is medium to coarse grained and |
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| Banded Iron Formation to Blue Dust: mineralogical and geochemical constraints from the Precambrian Jilling-Langalata...deposits of high-grade iron ores occur in the Singhbhum-Orissa Craton, in Eastern India. The deposits are...centimetre scale Archaean Banded Iron Formation units have been converted to steel grey, iron rich fine grained...found above the Fe-rich primary host rock known as Banded Haematite Jasper. Mineralogical observations indicate...the Blue Dust is mainly composed of haematite, martite and goethite while quartz and kaolinite are the |
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| COMPARISON OF THE CARAJÁS, HAMERSLEY, AND OTHER IRON ORES HILKE DALSTRA† Rio Tinto Exploration Pty.,...Pará, Brazil Abstract The genesis of banded iron formation (BIF)-hosted high-grade hematite deposits...that hydrothermal upgrading preceded supergene formation of the economic ores. The protores show a systematic...may reflect the temperature and depth of ore formation. The deepest deposits are characterized by magnetite-silicate...Proterozoic banded iron formation (BIF) and are the world’s most important source of iron ore. Although |
 | Gatsé Ebotehouna, Chesther, Xie, Yuling, Adomako-Ansah, Kofi, Gourcerol, Blandine, Qu, Yunwei (2021) Depositional Environment and Genesis of the Nabeba Banded Iron Formation (BIF) in the Ivindo Basement Complex, Republic of the Congo: Perspective from Whole-Rock and Magnetite Geochemistry. Minerals, 11 (6) 579 doi:10.3390/min11060579 | Journal (article/letter/editorial) |
| Environment and Genesis of the Nabeba Banded Iron Formation (BIF) in the Ivindo Basement Complex, Republic...Environment and Genesis of the Nabeba Banded Iron Formation (BIF) in the Ivindo Basement Complex, Republic...Nabeba high-grade iron deposit (Republic of the Congo) is hosted by banded iron formation (BIF) in the Ivindo...northwestern part of the Congo Craton. The Nabeba BIF is intercalated with chlorite-sericite-quartz schist...magnetite geochemistry of the BIF was reported. Magnetite samples from both BIF facies had fairly similar |
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| Genesis of High-Grade Iron Ores of the Archean Iron Ore Group around Noamundi, India NICOLAS J. BEUKES,...Presidency College, 86/1 College Street, Calcutta, India 700073 AND JENS GUTZMER† Paleoproterozoic Mineralization...hematite ores of the Iron Ore Group in the Noamundi area, Jharkhand state, India, are hosted by a laterally...laterally extensive, 220-m-thick banded iron formation (BIF) in a folded greenstone belt succession of Paleoarchean... and massive ores composed almost entirely of martite. Supergene ores, in contrast, are comprised of |
 | Ganno, Sylvestre, Tsozué, Désiré, Kouankap Nono, Gus Djibril, Tchouatcha, Milan Stafford, Ngnotué, Timoléon, Gamgne Takam, Ruth, Nzenti, Jean Paul (2018) Geochemical Constraints on the Origin of Banded Iron Formation-Hosted Iron Ore from the Archaean Ntem Complex (Congo Craton) in the Meyomessi Area, Southern Cameroon. Resource Geology, 68 (3) 287-302 doi:10.1111/rge.12172 | Journal (article/letter/editorial) |
| Geochemical Constraints on the Origin of Banded Iron Formation-Hosted Iron Ore from the Archaean Ntem Complex...Cameroon Abstract Banded iron formations (BIFs) are the most significant source of iron in the world. In...report petrographic and geochemical data of the BIF from the Meyomessi area in the Ntem Complex, southern...southern Cameroon, and discuss their genesis and the iron enrichment process. Field investigations and petrography...petrography have revealed that the studied BIF samples are hard; compact; weakly weathered; and composed |
 | Dai, Yanpei, Zhang, Lianchang, Zhu, Mingtian, Wang, Changle, Liu, Li, Xiang, Peng (2014) The composition and genesis of the Mesoarchean Dagushan banded iron formation (BIF) in the Anshan area of the North China Craton. Ore Geology Reviews, 63. 353-373 doi:10.1016/j.oregeorev.2014.04.013 | Journal (article/letter/editorial) |
| and genesis of the Mesoarchean Dagushan banded iron formation (BIF) in the Anshan area of the North China...Available online xxxx Keywords: Banded iron formation High-grade iron ore Zircon U–Pb dating Hf isotope...China Craton a b s t r a c t The Dagushan BIF-hosted iron deposit in the Anshan–Benxi area of the North...has two types of iron ore: quartz–magnetite BIF (Fe2OT3 b 57 wt.%) and high-grade iron ore (Fe2OT3 N 90...Chlorite-quartz schist and amphogneiss border the iron orebodies and are locally present as interlayers |
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| mineralogical and geochemical characterisation of iron ores from two Indian Precambrian deposits and Krivoy...Das1 and A. S. Venkatesh2 Iron ores from two important Precambrian belts in India are studied in detail....hosted by banded iron formations along with generations of shales, tuffs belonging to Iron Ore Group...Group of Eastern India and is hosted in the Singhbhum-North Orissa Craton. The second group of ores is from...Chitradurga basin in Eastern Dharwar Craton, Southern India. These form part of the Archaean greenstone belts |
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| Mineralogical Characteristics of Iron Ores in Joda and Khondbond Areas in Eastern India with Implications on Beneficiation...Metallurgical Laboratory, Jamshedpur, India Abstract Precambrian iron ores of the Singhbhum-North Orissa...Orissa region occur in eastern India as part of the Iron Ore Group (IOG) within the broad horse-shoe shaped...shaped synclinorium. More than 50% of Indian iron ore reserves occur in this region. Massive-hard, flaky-friable...lateritic varieties of iron ores are the major ore types, associated with banded hematite, jasper and shales |
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| Iron formation-hosted iron ores in the Hamersley Province of Western Australia J. M. F. Clout* Iron formation-hosted...formation-hosted iron ore deposits account for the majority of current world iron ore production and...classes: unenriched primary iron formation with typically 25 to 45 wt-%Fe; martite–goethite ore formed by...by supergene processes, with abundant hydrous iron oxides containing 60 to 63 wt-%Fe; high-grade hematite...supergene enrichment with 60 to 68 wt-%Fe. Individual iron ore deposits range from a few millions of tonnes |
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| genetic significance of the formation of iron oxides in the Nigerian banded iron-formations A. Miicke 1 and...studies reveal two main para- geneses in the banded iron-formations of Nigeria. In the low-grade metamorphic...paragenesis only occur as relics. The protolith of these banded ironformation occurrences envisioned as carbonate-containing...schist belts, recrystallization into coarse-grained martite occurred, while at the higher grades of metamorphism...hematite has also been observed in many other banded iron-formations from different parts of the world |
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| in the ‘Geology and ore genesis’ section of the Iron Ore 2002 Symposium proceedings, but not being reproduced...of the Archaean atmosphere to the genesis of banded iron formations J. D. M . L aw, G. N. Phillips and...and R . E. M yers M any of the world’s larger iron ore deposits are hosted by rock sequences of Archaean...nature of the atmosphere at the time of their formation, and more specifically by the presence or absence...but the criterion adopted here is whether crustal iron was limited to Fe2+ , or whether Fe3+ was also widespread |
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| Whaleback, Western Australia – implications for iron ore genesis A. D. Webb*1, G. R. Dickens2 and N....layers in banded iron formation (BIF) by basinal brines is a requisite first step toward ore formation. This...rocks have not been identified at the largest martite-microplaty hematite deposit, Mount Whaleback. In...invoke an early hypogene stage during the formation of the martite-microplaty hematite deposits in the Hamersley...Hamersley Province. Keywords: Hamersley, Mt Whaleback, Martite–microplaty hematite, Hypogene Introduction The |
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| Iron ore genesis and post-ore metasomatism at Mount Tom Price R . C. M orris About 90% of the pre-mining...pre-mining banded iron formation (BIF)-hosted iron ore resource of the Hamersley Province of Western Australia...Australia is of the Phanerozoic supergene martite–goethite type. The remaining 10% formed as supergene deposits...later modified by burial to form the Proterozoic martite–microplaty hematite ores. The supergenemetamorphic...aquifer of the Wittenoom Formation’ at 150–250°C, dissolved free silica from BIF to produce a stratigraphically |
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| Oxygen Isotope Compositions of Iron Oxides from High-Grade BIF-Hosted Iron Ore Deposits of the Central Hamersley...the world’s premier iron ore regions with high-grade martite-microplaty hematite iron ore deposits mostly...mostly hosted within banded iron formation (BIF) sequences of the Brockman Iron Formations of the Hamersley...Hamersley Group. These high-grade iron ores contain between 60 and 68 wt percent Fe, and formed by the multistage...the host BIF formation. The oxygen isotope compositions of magnetite and hematite from BIF, hydrothermal |
 | Taylor, D., Dalstra, H. J., Harding, A. E., Broadbent, G. C., Barley, M. E. (2001) Genesis of High-Grade Hematite Orebodies of the HamersleyProvince, Western Australia. Economic Geology, 96 (4) 837-873 doi:10.2113/gsecongeo.96.4.837 | Journal (article/letter/editorial) |
| Australia H. J. DALSTRA, A. E. HARDING,† Rio Tinto Iron Ore, 152-158 St. George’s Terrace, Perth, Western... Western Australia 6906 Abstract The Hamersley iron ore province of Western Australia contains world-class...hematite orebodies hosted within Lower Proterozoic banded iron formations at Mount Tom Price, Mount Whaleback...are always hosted by the Brockman Iron Formation, and ore formation resulted from a multistage, sequential...residual concentration of iron. The first, hypogene, stage of ore formation removed silica only, leaving |
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| Economic Geology Volume 15 BANDED IRON FORMATION-RELATED HIGH-GRADE IRON ORE Editors S. Hagemann, C...Economic Geology, Vol. 15 Banded Iron Formation-Related High-Grade Iron Ore S. Hagemann, C. Rosière...Companhia Vale do Rio Doce (Vale) TIER 2 Kumba Iron Ore ASSMANG TIER 3 Centre for Exploration Targeting...Biographies vii Introduction: Banded Iron Formation-Related High-Grade Iron Ore Steffen Hagemann, Carlos...Origin of Banded Iron Formations Chapter 1: Origin and Paleoenvironmental Significance of Major Iron Formations |
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| RARE-EARTH ELEMENTS IN THE INDIAN B A N D E D IRON FORMATION T. MAJUMDER ~, J.E. WHITLEY 2 and K.L. CHAKRABORTY...Geology, Indian School o f Mines, Dhanbad 826 004 (India) :Scottish Universities Research and Reactor Centre...Sciences, Jadapur University, Calcutta 700 032 (India) (Received January 4, 1983; revised and accepted...1984. Rare-earth elements in the Indian banded iron formation. Chem. Geol., 45 : 203--211. The normalised...(REE) of the banded iron formation (BIF), associated rocks and ores from eastern India show similarities |
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| 2004 Ó Springer-Verlag 2004 Abstract High-grade iron mineralisation (>65%Fe) in the North Deposit occurs...an E-W trending synclinal sheet within banded iron formation (BIF) of the Early Proterozoic Dales Gorge...consists of martite-microplaty hematite ore. Three hypogene alteration zones between unmineralised BIF and high-grade...high-grade iron ore are observed: (1) distal magnetite-siderite-iron silicate, (2) intermediate hema...hematite-ankerite-magnetite, and (3) proximal martite-microplaty hematite-apatite alteration zones. Fluid |
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| GEOLOGY OF INDIA खंड III दविणी भारत का इकनोवमक भूविज्ञान VOLUME-III ECONOMIC GEOLOGY OF SOUTHERN INDIA विशेष... भारतीय भूिैज्ञावनक सिेिण GEOLOGICAL SURVEY OF INDIA 2022 © भारत सरकार PGSI-447 नियंत्रक प्रकाशि...GEOLOGICAL SURVEY OF INDIA भारत के भूविज्ञान का मैनुअल A MANUAL OF GEOLOGY OF INDIA खंड III दविणी भारत...भूविज्ञान VOLUME-III ECONOMIC GEOLOGY OF SOUTHERN INDIA विशेष प्रकाशन सं.77 SPECIAL PUBLICATION No. 77...Published by the order of the Government of India 2022 © INDIA, GEOLOGICAL SURVEY (2022) Compiled by Shri |
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| com/loi/taje20 Genesis of lateritic iron ore from banded iron-formation in the Capanema mine (Minas Gerais...Ramanaidou (2009) Genesis of lateritic iron ore from banded iron-formation in the Capanema mine (Minas Gerais...(605–620) Genesis of lateritic iron ore from banded iron-formation in the Capanema mine (Minas Gerais...weathering of metamorphosed Proterozoic banded iron-formation (BIF), locally named itabirite in Brazil,... produced large deposits of iron ore. At the Capanema iron-ore mine in the Quadrilatero Ferrifero in |
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| zones between unmineralised banded iron formation (BIF) and high-grade iron ore: distal magnetite-siderite-stilpnomelane;...hematite-magnetite-ankerite-talc-chlorite; and proximal martite-microplaty hematitemagnetite-apatite alteration...stage hydrothermal model is proposed for the formation of both the Southern Ridge and North deposits...brines (110–150uC) from the underlying Wittenoom Formation and directed upward along normal faults and focused...Mt McRae Shale Member and overlying Whaleback Formation. Within the Dales Gorge Member hydrothermal basinal |
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| of the premium martite-microplaty hematite ores derived from banded iron formation (BIF), to replace the...recorded previously as carbonate metasomatism of BIF (Ewers and Morris, 1981), and as localized postore...free silica with addition of further siderite in BIF, followed by compaction, produced a general hematite...weathering profiles, oxidation of magnetite to martite, and siderite to microplaty hematite and ankerite...of residual gangue, enriched this modified BIF to martite-microplaty hematite ore. In contrast, in the |
