 | | Journal (article/letter/editorial) | | Structural Controls on Fe Mineralization at Thabazimbi Mine, South Africa I.J. Basson, C. Koegelenberg PII: DOI:...Structural Controls on Fe Mineralization at Thabazimbi Mine, South Africa, Ore Geology Reviews (2016), doi: 10...Structural 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...of the Transvaal Basin, were imbricated during formation of the Mohlapitsi Fold-and-Thrust Belt between |  | | 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...some two years ago, of high-grade iron ore deposits in South Africa, India and Brazil, including a comparison...Large, high-grade hematite iron ore bodies hosted by Precambrian banded iron formations are the world’s...world’s most important source of iron ore. Despite their great economic importance, the origin of these deposits...of BIF-hosted high-grade hematite iron ore deposits in South Africa, India, Western Australia and Brazil |  | Möller, V., Klemd, R., Joachimski, M., Barton, J.M. (2014) Hydrothermal controls on iron and lead mineralization on the farms Leeuwbosch and Cornwall, Thabazimbi District, South Africa. Ore Geology Reviews, 63. 40-63 doi:10.1016/j.oregeorev.2014.04.009 | Journal (article/letter/editorial) | | on iron and lead mineralization on the farms Leeuwbosch and Cornwall, Thabazimbi District, South Africa...of Fort Hare, Private Bag X1314, Alice 5700, South Africa a r t i c l e i n f o Article history: Received...April 2014 Keywords: Hematite Galena Leeuwbosch Thabazimbi Fluid inclusions Stable isotopes a b s t r a...The Paleoproterozoic Malmani Subgroup and Penge Formation (Transvaal Supergroup) exposed on the farms Leeuwbosch...Leeuwbosch and Cornwall north of Thabazimbi (Limpopo Province, South Africa) host hydrothermal Pb–Ag– Cu–Zn |  | | Journal (article/letter/editorial) | | 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...hematite-dolomite (calcite) assemblages (Carajás, Thabazimbi). Introduction Economic high-grade hematite |  | | Journal (article/letter/editorial) | | The sedimentology of the Waterberg Group in the Transvaal, South Africa: an overview C. C. CALL.A~~AN*...*Geological Survey of South Africa, F! Bag x112, Pretoria 0001, Republic of South Africa **Department of Geology...Pretoria 0002, Republic of South Africa Abstrrtct - The Palaeoproterozoic Waterberg Group consists chiefly...Kaapvaal craton. The Main basin is bounded in the south by the ‘fhabazimbi-Murchison fault zone and in the...deposited on narrow braidplains. The Makgabeng Formation was deposited during the more stable period that |  | Hagemann, S. H., Rosière, C. A., Lobato, L., Baars, F., Zucchetti, M., Figueiredo e Silva, R. C. (2006) Controversy in genetic models for Proterozoic high-grade, banded iron formation (BIF)-related iron deposits – unifying or discrete model(s)?. Applied Earth Science, 115 (4) 147-151 doi:10.1179/174327506x138968 | Journal (article/letter/editorial) | | models for Proterozoic high-grade, banded iron formation (BIF)-related iron deposits – unifying or discrete...high-grade (.65 wt-%Fe) Proterozoic, banded iron formation (BIF)-related iron deposits such as the Tom Price...in the Iron Quadrangle (Brazil), the Donkerpoort West, Kwagas East deposit in the Thabazimbi iron ore district...district (South Africa) or the Saksagan ore field at Krivoy Rog (Ukraine), needs to take into account...with respect to the upgrade of BIF to high-grade iron ore; (b) significance and relationship of the protoore |  | Rajesh, H.M., Chisonga, B.C., Shindo, K., Beukes, N.J., Armstrong, R.A. (2013) Petrographic, geochemical and SHRIMP U–Pb titanite age characterization of the Thabazimbi mafic sills: Extended time frame and a unifying petrogenetic model for the Bushveld Large Igneous Province. Precambrian Research, 230. 79-102 doi:10.1016/j.precamres.2013.02.002 | Journal (article/letter/editorial) | | SHRIMP U–Pb titanite age characterization of the Thabazimbi mafic sills: Extended time frame and a unifying...2006, South Africa CAE Mining Africa, 9 Fricker Road, Illovo Boulevard, Illovo 2196, South Africa c Research...sills occur within and in the vicinity of the Thabazimbi iron ore deposit, near the northern edge of the... The sills are hosted in the 2.46 Ga Penge Iron Formation of the Transvaal Supergroup. The gabbroic sills...2046.6 ± 3.4 Ma. In terms of whole-rock Mg#, the Thabazimbi sills fall into groups – a low Mg# (∼44–55) group |  | | Journal (volume) | | 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 |  | | Journal (article/letter/editorial) | | rocks of the Makoppa Dome, northwest Limpopo Province, South Africa C.R. Anhaeusser Economic Geology Research...Private Bag 3, P.O. WITS 2050, Johannesburg, South Africa e-mail: anhaeusserc@geosciences.wits.ac.za ...Private Bag 3, P.O. WITS 2050, Johannesburg, South Africa Present address: Department of Earth Sciences...mpoujol@esd.mun.ca © 2004 Geological Society of South Africa ABSTRACT The Makoppa Dome, located in the far...Archaean granite-greenstone terranes in southern Africa. For this reason it has received very little attention |  | | Journal (article/letter/editorial) | | crustal architecture of the Kaapvaal crustal block South Africa, between 3.5 and 2.0 Ga A synopsis S. McCourt...Geology,Universityof Pretoria, Hillcrest0083, South Africa Received: 11 May 1994/Accepted: 9 December 1994...Zimbabwe block and the Central Zone to generate the Limpopo granulite gneiss terrane. Coeval with these orogenic...Witwatersrand/Pongola and Ventersdorp basins. The craton scale Thabazimbi-Murchison Lineament development during the 3...2.64 Ga Wolkberg Group, overlying Black Reef Formation and the Transvaal Sequence. The Transvaal and |  | Basson, I.J., Anthonissen, C.J., McCall, M.J., Stoch, B., Britz, J., Deacon, J., Strydom, M., Cloete, E., Botha, J., Bester, M., Nel, D. (2017) Ore-structure relationships at Sishen Mine, Northern Cape, Republic of South Africa, based on fully-constrained implicit 3D modelling. Ore Geology Reviews, 86. 825-838 doi:10.1016/j.oregeorev.2017.04.007 | Journal (article/letter/editorial) | | Ore-Structure Relationships at Sishen Mine, Northern Cape, Republic of South Africa, Based on Fully-Constrained...Ore-Structure Relationships at Sishen Mine, Northern Cape, Republic of South Africa, Based on Fully-Constrained... Ore-Structure Relationships at Sishen Mine, Northern Cape, Republic of South Africa, Based on Fully-Constrained...West, South Africa 2 Sishen Iron Ore Company (Pty) Ltd., Private Bag X506, Kathu, 8446, South Africa...Kumba Iron Ore, Corporate Office, Centurion Gate, 124 Akkerboom Road, Centurion, 0157, South Africa Abstract |  | | Journal (article/letter/editorial) | | Banded iron formation hosted high-grade hematite deposits, a coherent group? H . D alstra, T. H arding...exclude a simple supergene model for ugrading the host iron formations to highgrade hematite ore. Similar hydrothermal...dalstra@expl.riotinto.com.au), Tony Harding is in Rio Tinto Iron Ore, 152–158 St George’s Terrace, Perth, WA 6000...6000, Australia, Tarni Riggs is in Hamersley Iron Pty Ltd, 152–158 St George’s Terrace, Perth, WA 6000,...Australia. Based on a contribution to the conference Iron Ore 2002, organised by AusIMM and CSIRO in Perth |  | Stoch, B., Anthonissen, C. J., McCall, M-J., Basson, I. J., Deacon, J., Cloete, E., Botha, J., Britz, J., Strydom, M., Nel, D., Bester, M. (2018) 3D implicit modeling of the Sishen Mine: new resolution of the geometry and origin of Fe mineralization. Mineralium Deposita, 53 (6) 835-853 doi:10.1007/s00126-017-0784-y | Journal (article/letter/editorial) | | -y ARTICLE 3D implicit modeling of the Sishen Mine: new resolution of the geometry and origin of Fe...Abstract The Sishen deposit is one of the largest iron ore concentrations in current production. Hematite...faults that show relatively minor uplift to the south, probably due to the Lomanian Namaqua-Natal Orogeny...enrichment and concentric palaeosinkhole formation. Keywords Iron ore . Structural interpretation . Implicit...Leapfrog™ Introduction Mined since 1953, Sishen Mine near the town of Kahtu in the Northern Cape Province |  | | Journal (article/letter/editorial) | | low-grade iron ore deposits in metamorphosed banded iron formations, Northern Province, South Africa Received:...of low-grade iron ore would be quite unique in a South African context as South Africa is well endowed...high-grade iron ore resources. Low-grade iron ore, de®ned as containing between 20 and 47% iron, is thought...thought to be the primary iron-bearing lithology from which most high-grade ore deposits formed, through...enrichment. The low-grade iron ores in the Northern Province represent meta-banded iron formations (BIFs), with |  | | Journal (article/letter/editorial) | | 572-581 ALTERED PYROCLASTIC ROCKS IN SOUTH AFRICAN IRON-FORMATION GENE L. LABERGE ABSTRACT Hundredsof...is madewith similar stilpnomelane-rich layers in iron-formationfrom Western Australia. The presenceof...volcanic activity during much of the time the iron-formation was beingdeposited. INTRODUCTION ON•. of the...possiblerelationshipbetweenvolcanismand the deposition of iron-formation.The reasonfor the controversy is the fact...evidence for volcanicactivitycontemporaneous with iron-formation deposition hasbeenrecognized.AlthoughmanyA |  | Finn, Carol A., Bedrosian, Paul A., Cole, Janine C., Khoza, Tshepo David, Webb, Susan J. (2015) Mapping the 3D extent of the Northern Lobe of the Bushveld layered mafic intrusion from geophysical data. Precambrian Research, 268. 279-294 doi:10.1016/j.precamres.2015.07.003 | Journal (article/letter/editorial) | | Geoscience, Private Bag X112, Pretoria 0001, South Africa c School of Geosciences, University of the Witwatersrand...Witwatersrand, Private Bag 3, WITS 2050, South Africa cr ip t b us *Corresponding author. Tel. +01-303-236-1345...portion of the Bushveld Complex north of the Thabazimbi-Murchison Lineament (TML), critical for 29 ...Bushveld Complex but the 38 identification of local feeders and/or dikes in the TML in the models is...Bushveld Complex is poorly known north of the Thabazimbi- 52 Murchison Lineament (TML) (Fig. 1) despite |  | WALKER, A. S. D., KEY, R. M., POULIQUEN, G., GUNN, G., SHARROCK, J., McGEORGE, I., KOKETSO, M., FARR, J. (2010) GEOPHYSICAL MODELLING OF THE MOLOPO FARMS COMPLEX IN SOUTHERN BOTSWANA; IMPLICATIONS FOR ITS EMPLACEMENT WITHIN THE 2 GA LARGE IGNEOUS PROVINCES OF SOUTHERN AND CENTRAL AFRICA. South African Journal of Geology, 113 (4) 381-400 doi:10.2113/gssajg.113.4.381 | Journal (article/letter/editorial) | | LARGE IGNEOUS PROVINCES OF SOUTHERN AND CENTRAL AFRICA A.S.D. WALKER British Geological Survey, Keyworth...co.bw © 2010 December Geological Society of South Africa ABSTRACT The Molopo Farms Complex is an extremely...southern border of Botswana with South Africa. It lies within the south-western part of the ~2.0 Ga large...large igneous province of southern and central Africa that includes the better known Bushveld Complex....magnetic maps. It is proposed that either post- SOUTH AFRICAN JOURNAL OF GEOLOGY, 2010, VOLUME 113.3 PAGE |  | | Journal (article/letter/editorial) | | of the Western Margin of the Kaapvaal Craton, South Africa Justine Tinker CIGCES. Department of Geological...Sciences, University of Cape Town, Rondebosch 7701, South Africa email: Justine@cigces.uct.ac.za Maarten de...Sciences, University of Cape Town, Rondebosch 7701, South Africa email: Maarten@cigces.uct.ac.za John Grotzinger...craton’s northern margin, (southwards from the Thabazimbi-Murchison Lineament across the western extremity...well as ~300% tectonic thickening of the Hartley Formation in response to east-verging, Paleoproterozoic |  | Rasmussen, Birger, Fletcher, Ian R., Muhling, Janet R., Thorne, Warren S., Broadbent, Graeme C. (2007) Prolonged history of episodic fluid flow in giant hematite ore bodies: Evidence from in situ U–Pb geochronology of hydrothermal xenotime. Earth and Planetary Science Letters, 258 (1) 249-259 doi:10.1016/j.epsl.2007.03.033 | Journal (article/letter/editorial) | | ore deposits, which are hosted in Precambrian banded-iron formations (BIFs), remains contentious. Several...high-grade hematite ore bodies from the Mount Tom Price mine in the Hamersley Province, northwestern Australia...aforementioned models, our results imply that iron-ore formation was probably a long-lived, multi-stage process...mineralization; tectonothermal; fluid flow; xenotime; SHRIMP; iron-ore ⁎ Corresponding author. Tel.: +61 8 6488 1871;...in Precambrian banded-iron formations represent the world's most important source of iron ore, with notable |  | | Journal (article/letter/editorial) | | Archaean-early Proterozoic Transvaal Supergroup, South Africa Received: 14 August 1996 / Accepted: 13 March...is noted for the thick shales of the Silverton Formation in this group, with, in addition, a well-de®ned...Geology, University of Pretoria, Pretoria 0002, South Africa L.A.G. Antoine BPI Geophysics, University of...the Witwatersrand, Private Bag 3, WITS 2050, South Africa Introduction Precambrian sedimentary basins...synsedimentary fault activity, and frequently also to the formation of secondand third-order basins having their maximum |  | | Journal (article/letter/editorial) | | of Archean Banded Iron-Formation-hosted gold deposits: Some examples from Southern Africa T. Oberthiir...deposits hosted by Algoma-type Banded Iron-Formations (BIF) in southern Africa. Genetic aspects of various...the chemical sediments. Irrespective of their formation, gold enrichment in BIF only occurs if the S-...always associated with increased contents of the iron-sulfides pyrite, arsenopyrite and pyrrhotite. The...genetic processes such as primary syn-sedimentary formation, diagenetic changes, metamorphic remobilization |  | | Journal (article/letter/editorial) | | within the northeastern escarpment (Limpopo and Mpumalanga, South Africa) S.S.E. Mndaweni and S. Naicker...Pretoria, South Africa e-mail: mndawenis@dws.gov.za; naickers@dws.gov.za D. Blake Umvoto Africa (Pty) Ltd...Muizenberg, South Africa e-mail: dylan@umvoto.com © 2019 Geological Society of South Africa. All rights...structure east of the Pretoria Group along the Limpopo and Mpumalanga escarpment. These rocks form a fractured...been regarded as the most important aquifers in South Africa (Barnard, 2000) due to their high to very high |  | | Journal (article/letter/editorial) | | Source and age of upper Transvaal Supergroup, South Africa: Age-Hf isotope record of zircons in Magaliesberg...Source and age of upper Transvaal Supergroup, South Africa: Age-Hf isotope record of zircons in Magaliesberg...Source and age of upper Transvaal Supergroup, South Africa: Age-Hf isotope record of zircons in Magaliesberg...University of the Witwatersrand, Johannesburg, 2050, South Africa 3 Section of Earth and Environmental Sciences...Karlsruhe Institute of Technology (KIT), Campus South, Mineralogy and Petrology, Adenauerring 20b, 50 |  | McCarthy, T.S., Corner, B., Lombard, H., Beukes, N.J., Armstrong, R.A., Cawthorn, R.G. (2018) The pre-Karoo geology of the southern portion of the Kaapvaal Craton, South Africa. South African Journal of Geology, 121 (1) 1-22 doi:10.25131/sajg.121.0006 | Journal (article/letter/editorial) | | the southern portion of the Kaapvaal Craton, South Africa T.S. McCarthy School of Geosciences, University...2050, South Africa Shango Solutions, HHK House, 22 Ethel Street, Johannesburg 2194, South Africa e-mail:...Department of Geosciences, University of Cape Town, South Africa e-mail: branko@iafrica.com.na H. Lombard Geo-Consult...address: PO Box 469, Struben's Valley, 1735, South Africa e-mail: henri.lombard@gmail.com N.J. Beukes...University of Johannesburg, Auckland Park 2006, South Africa e-mail: nbeukes@uj.ac.za R.A. Armstrong Research |  | | Journal (article/letter/editorial) | | 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...unmineralised BIF and high-grade iron ore are observed: (1) distal magnetite-siderite-iron silicate, (2) intermediate...Hypogene siderite and ankerite from magnetite-siderite-iron silicate and hematite-ankerite-magnetite alteration...enriched carbon isotopes from magnetite-siderite-iron silicate alteration (8.8±0.7&, 1r, n=17) to he |
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