 | Grobbelaar, W. S., Burger, M. A., Pretorius, A. I., Marais, W., van Niekerk, I. J. M. (1995) Stratigraphic and structural setting of the Griqualand West and the Olifantshoek Sequences at Black Rock, Beeshoek and Rooinekke Mines, Griqualand West, South Africa. Mineralium Deposita, 30 (2) 152-161 doi:10.1007/bf00189344 | Journal (article/letter/editorial) | | Sequences at Black Rock, Beeshoek and Rooinekke Mines, Griqualand West, South Africa W.S. Grobbelaar, M.A...Manganese Mines of South Africa Limited, PO, Mancorp Mine, 8423, Beeshoek, South Africa Received: 13 May...structure has been observed in the Rooinekke, Beeshoek and Black Rock mining areas. The thrusts are disrupted...200 km between R o o i n e k k e Mine in the south and Black Rock Mine in the north, in G r i q u a l a...distribution of geological features to the n o r t h and south of the M a r e m a n e D o m e structure, located |  | | Journal (article/letter/editorial) | | development of the Sishen South (Welgevonden) iron ore deposit, South Africa, as deduced from ground gravity...Palaeoproterozoic Transvaal Supergroup in the northern Cape Province of South Africa hosts high grade (.60%Fe) hematitic...mineralisation is primarily exposed along the western margin or in the central part of a major interference...structure known as the Maremane dome. The bulk of South Africa’s iron ore production is currently provided...Sishen iron ore mine on the northern end of the dome, and the smaller Assmang Beeshoek mine on the southern |  | | Journal (article/letter/editorial) | | Sishen and Sishen South (Welgevonden) iron ore deposits, Northern Cape Province, South Africa M. D. Carney...Palaeo-Proterozoic Transvaal Supergroup in the Northern Cape Province of South Africa is host to the largest known resources...resources of high-grade hematite ore on the Southern African continent. These ores are currently being...Sishen and Beeshoek. Hematite occurrences on the Sishen South exploration project (some 65 km south of Sishen...Sishen mine) are, at present, the focus of an intensive investigation. At both the Sishen and Sishen South |  | | Journal (article/letter/editorial) | | manganese ores of the Postmasburg manganese field, South Africa J. GUTZMERAND N. J. BEUKES Department of Geology...University, P.O. Box 524, Auckland Park, 2006, South Africa Abstract The diagenetic to very low-grade metamorphic...Transvaal Supergroup, manganese ore, Postmasburg, South Africa. Introduction TIlE manganese ores of the Postmasburg...ferruginous ores of the Westem Belt and siliceous ores of the Eastern Belt (Fig. 1B). Ferruginous ores form...Lohatlha and Gloucester in the central part of the Western Belt (Fig. 1B). Siliceous ores occur locally in the |  | | Journal (article/letter/editorial) | | The geology and genesis of high-grade hematite iron ore deposits N. J. Beukes, J. G utzmer and J. M ukhopadhyay...years ago, of high-grade iron ore deposits in South Africa, India and Brazil, including a comparison with...Hamersley Province in Australia. Large, high-grade hematite iron ore bodies hosted by Precambrian banded iron...BIF-hosted high-grade hematite iron ore deposits in South Africa, India, Western Australia and Brazil...hydrothermal origin for most BIF-hosted highgrade hematite ore deposits. Differences between the deposits |  | | Journal (article/letter/editorial) | | THE MANGANESE DEPOSITS SOUTH ALEX. I933 No. :2 . OF POSTMASBURG, AFRICA. L. DU TOIT. CONTENTS...1922, and are situatedcloseto Postmasburg in the Cape Province (Lat. 28ø 20' S.; Long. 23ø 04' E.) some...of the Eastern Belt, but has not yet exported; it possesses huge depositsof hematite ore as well. The...DEPOSITS OF POSTMASBURG. 99 B. Matsap System (Gamagara Beds)--probably early Palaeozoic. 4. Pale quartzites...feet on Doorn Put, but over a gooddeal of the Western Belt, saveat either end, it is presentas mere remnants |  | Moore, John M., Kuhn, Barbara K., Mark, Darren F., Tsikos, Harilaos (2011) A sugilite-bearing assemblage from the Wolhaarkop breccia, Bruce iron-ore mine, South Africa: Evidence for alkali metasomatism and 40Ar-39Ar dating. European Journal of Mineralogy, 23 (4) 661-673 doi:10.1127/0935-1221/2011/0023-2117 | Journal (article/letter/editorial) | | from the Wolhaarkop breccia, Bruce iron-ore mine, South Africa: Evidence for alkali metasomatism and 40Ar-39Ar...Geology, Rhodes University, Grahamstown 6140, South Africa *Corresponding author, e-mail: h.tsikos@ru.ac...breccia at the Bruce iron-ore mine, Northern Cape Province, South Africa. The upper portion of the breccia...Similarities to sugilite-bearing assemblages at the Wessels mine in the Kalahari Manganese Field suggest that a single...sugilite, alkali metasomatism, manganese, breccia, South Africa, 40Ar/39Ar dating, armbrusterite. 1. Introduction |  | | Journal (article/letter/editorial) | | of the Transvaal Supergroup, Griqualand West, South Africa HUBERT WIGGERING FB 9 Geologic, Universittit...University, P.O. Box 524, 2000 Johannesburg (South Africa) (Received February 12, 1989; accepted June...of the Transvaal Supergroup, Griqualand West, South Africa. Precambrian Res., 46: 241-258. A 4-m-thick...km northwest of Hotazel in Griqualand West, South Africa. The paleo-alteration profile is developed on...characterized by concentration of Fe203, in the form of hematite, iron-rich chlorite and abundant sericite. The |  | | Journal (volume) | | for Exploration Targeting (CET), University of Western Australia Paleoproterozoic Mineralization Research...of Banded Iron Formation-Hosted High-Grade Hard Hematite Deposits—A Paleomagnetic Approach M. O. de Kock...Geochemistry of Banded Iron Formation-Hosted High-Grade Hematite-Martite Iron Ores J. Gutzmer, Benny C. Chisonga...Genesis of Giant Banded Iron Formation-Hosted Hematite Ore Deposits John G. McLellan and Nicholas H....Formation-Related Iron Ore Deposits of the Hamersley Province, Western Australia Warren Thorne, Steffen Hagemann, Adam |  | | Journal (article/letter/editorial) | | Department of Geology, University of Johannesburg, South Africa University College Dublin (UCD) School of Earth...Department of Geology, University of Johannesburg, South Africa e-mail: ljolly@uj.ac.za; fanusv@uj.ac.za P....University of Cape Town, South Africa e-mail: petrus.leroux@uct.ac.za © 2019 Geological Society of South Africa...precipitate, having only undergone diagenesis SOUTH AFRICAN JOURNAL OF GEOLOGY 2019 • VOLUME 122.2 PAGE...ore. and is situated relatively close to the western margin of the 3.1 Ga Kaapvaal Craton (Gutzmer et |  | | Journal (article/letter/editorial) | | predominantly of braunite II, hausmannite and hematite. The features of primary sedimentary lamination...carbonate ovoids Braunite, kutnahorite, hausmannite Hematite, calcite Restricted areas along normal faults...3 to 10 over the 45 m thick ore bed at Mamatwan mine (Nel et al. 1986). 5. Unaltered primary Mamatwan-type...Schiitte (1995). It is up to 45 m thick at Mamatwan mine (Nel et al. 1986). However, only the central 15...Bishop and Glosam manganese mines and the Beeshoek iron mine of the Postmasburg area'. The publication |  | | Journal (article/letter/editorial) | | figures and 1 plate Zusammenfassung Aus der FERTECO-mine, Eisernes Viereck, M.G. Brasilien, werden Mineralogie...cocTaBaermbix nopo~aMn BbmeTpm~anmq,.3 perriona Ferteco-mine, M.G. Bpa3Hnm4. Hponcxo:~(~e~He ~x CB~IBbIBatOTC...formation BIF (banded iron formation) (rEgion de la mine de FERTECO, M.G., Br&il). Ces min&aux lat&itiques...(Kuruman IF) Maaganore eroded ] t O. :3 O L~ Gamagara Fm (Sishen Shale) n.LU ' 9.-'.:.:~!~ii (3. ~9...OR,OOA A.O W E S . . A S , . ~I"~{'~(SISHEN & BEESHOEK AREAS) Fig. 1. Stratigraphic relationships of |  | Tsikos, H., Beukes, N. J., Moore, J. M., Harris, C. (2003) Deposition, Diagenesis, and Secondary Enrichment of Metals inthe Paleoproterozoic Hotazel Iron Formation, Kalahari Manganese Field, SouthAfrica. Economic Geology, 98 (7) 1449-1462 doi:10.2113/gsecongeo.98.7.1449 | Journal (article/letter/editorial) | | Hotazel Iron Formation, Kalahari Manganese Field, South Africa HARILAOS TSIKOS,†,* NICOLAS J. BEUKES, Geology...2006, South Africa JOHN M. MOORE, Geology Department, Rhodes University, Grahamstown 6140, South Africa...Geological Sciences, University of Cape Town, Rondenbosch 7700, South Africa Abstract The Kalahari manganese...manganese field in the Northern Cape province, South Africa, is a world-class manganese resource (ca. 8 billion...two areas of the Kalahari manganese field, in the south and in the north of the field, which respectively |  | | Book | | 2. Model Test Area: Moanda Deposit, Gabon, West Africa 2.2.2.1. Introduction 20 20 23 23 23 25 25 27...Postmasburg Region, Griqualand West, Cape Province, South Africa 3.3.1. Geological Setting 3.3.2. Genesis...Manganese Ore Formation Manganese Ore Deposits of North Africa: Imini, Morocco 3.4.1. Geological Setting 3.4.2...of the Western Ukraine 3.5.2. Zone of Oxidation and Karst Ore Accumulation of the Enisei Ridge Mn Deposits...ancient glaciers, and the glaciation epoch of the northern countries - in Scotland, in Scandinavia, in Finland |  | | Journal (article/letter/editorial) | | Abstract. The ~ 2220 Ma Kalahari Manganese field of South Africa is the world's largest Mn resource and a major...deposit (e.g. Roy, 1992; Schissel and Aro, 1992). South of the Kalahari Manganese Field the VoElwater Subgroup...Pleistocene Kalahari desert sands in the northern Cape Province of South Africa (Fig. 1). It contains 9 billion...margins of massive flows in "regional Ongeluk" to the south of the Kalahari Mn Field. They reconstructed the...context of Precambrian Tectonic provinces of Southern Africa. The geological section A-B across the Kheis-Kaapvaal |  | | Journal (article/letter/editorial) | | Controls on Fe Mineralization at Thabazimbi Mine, South Africa I.J. Basson, C. Koegelenberg PII: DOI: Reference:...Controls on Fe Mineralization at Thabazimbi Mine, South Africa, Ore Geology Reviews (2016), doi: 10.1016/j...Controls on Fe Mineralization at Thabazimbi Mine, South Africa I.J. Basson, C. Koegelenberg Tect Geological...Consulting, Unit 8, AMDEC House, Steenberg, South Africa T Abstract IP Chemical-sedimentary rocks...rocks of the Transvaal Supergroup, along the northern margin of the Transvaal Basin, were imbricated during |  | | Journal (article/letter/editorial) | | formation-hosted iron ores in the Hamersley Province of Western Australia J. M. F. Clout* Iron formation-hosted...oxides containing 60 to 63 wt-%Fe; high-grade hematite ores thought to be of hypogene or metamorphic...of 200 to 500 Mt. In the Hamersley province of Western Australia, martite– goethite ores are largely developed...While the vast majority of high-grade microplaty hematite ore is best developed in the Brockman iron formation...textural evidence of locally significant microplaty hematite mineralisation in the Nammuldi member of the Marra |  | | Journal (issue) | | Geology and Genesis of BIF-Hosted High-grade Hematite Iron-ore Deposits …………. . Recent Earthquake Activity...the next few weeks. Other planned trips are to How Mine, Sternblick Quarry and the Antech Laboratory in...there is anyone interested in hosting us at their mine or project, please come forward and assist. In other...bedrock. Panners dig pits to this rubble layer and mine the rubble that they then pan to recover the gold...Beers. The kimberlites are located about 90 km south by road from Matare in the Marange Communal Land |  | | Journal (article/letter/editorial) | | Lime Limited, Private Bag, 8410 Lime Acres, South Africa Received: 8 July 1994/Accepted: 9 December 1994...m). There, the largest limestone deposits of South Africa are located. The deposit at Lime Acres and mining...early Proterozoic, the Kaapvaal craton of southern Africa hosted three major sub-basins, in which clastic...Province of South Africa, the Griqualand West basin in the northern Cape Province of South Africa, and the...Province and correlative rocks of the northern Cape Province the South African Committee for Stratigraphy |  | | Book | | Superior, the Ungava belt of Canada, and of the Transvaal Supergroup of South Africa, are syntheses considerably...University, Auckland Park, PO 524, Johannesburg 2000, South Africa. J.A. BUNTING Exploration Department, BHP...Mines, Mineral House, 6 6 Adelaide Terrace, Perth Western Australia 6000, Australia. W.E. EWERS Unit 1...1 6 , 1 2 8 Forrest Street, Peppermint Grove, Western Australia 6011. Australia. B.J. FRYER Department...Proprietary Co. Ltd., 37 St. Georges Terrace, Perth, Western Australia 6000, Australia. H.J. HOFMANN Department |  | | Journal (article/letter/editorial) | | hstan M auritania M exico Peru Russia & Ukraine South Africa Sweden Turkey U nited States Venezuela Others... F), magnetite (M), relict and recrystallised hematite (Hr and Hk), relict olivine (Ol) and glass (G);...ore pellet showing the mineralogical texture. Hematite grains (H), finely ground and slightly recrystallised...principal iron ore minerals (Table 2) are magnetite, hematite and goethite and the main gangue minerals are...mineralogy Mineral Chemistry Wt-%Fe (pure) Density Hematite Comments a-Fe2O3 70 5·25 Often contains inclusions |  | | Report (issue) | | famous Mesoarchean Witwatersrand Supergroup in South Africa that contains Earth’s largest gold-uranium deposits...precipitates, and Gutzmer et al. show that high-grade hematite BIF deposits formed under conditions similar to...post-depositional processes in uranium ores at the Stanleigh mine, Elliot Lake, Ontario, Canada.....................glacier-associated sediments of the Neoproterozoic of south China: Oceanic anoxia or sulfate limitation? .....239 D.A. Brown 15. Oxygen isotope composition of hematite and genesis of high-grade BIF-hosted iron ores |  | | Journal (article/letter/editorial) | | subrata11@yahoo.com 178 Singhbhum and Orissa iron ore belt, the largest and richest ore pockets of Blue Dust...horizons do not vary dramatically between the western limb areas and the eastern limb despite of the...at Gua, Bolani, Kiriburu and Barsua fall on the western limb while the deposits of Noamundi, Thakurani...hematitic ore variety that is exclusively found in the northern portion of the eastern limb of the synclinorium...along with banded hematite jasper (average) Ore sample/ elements, wt-% Banded Hematite Jasper (BHJ) Hard |  | | Report (chapter) | | favoured the oxidation and precipitation of iron as hematite (Fe203) and magnetite (Fe304) (or more probably...origin of Palaeoproterozoic manganese deposits in South Africa, India and Gabon (Biihn et al. 1992; Roy 1992;...Geology, 18, 58-61. AHN, J. H. & BUSECK, P. R. 1990. Hematite nanospheres of possible colloidal origin from...iron-formations and associated shales from Hamersley, western Australia. Geochimica et Cosmochimica Acta, 57...Kuruman iron-formations, Transvaal Supergroup, South Africa. Precambrian Research, 78. & MrLLER, P. 1993 |  | | Journal (article/letter/editorial) | | exposed along the walls of the Mamatwan Mine, Northern Cape, South Africa, reveals three main depositional environments:...section (55 m) of the Kalahari Group at Mamatwan Mine was analysed for its mineralogy, elemental composition...and a supply of sediments from Paleoproterozoic western and northwestern source areas following the establishment...These sub-basins stretch over 2200 km in a north-south direction, and for the (Figure 1). CE purposes...Nossob-Molopo sub-basin that is bounded to the south by the Etosha–Griqualand–Transvaal (E-G-T) axis |
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