 | | Journal (article/letter/editorial) | | c development of the Sishen South (Welgevonden) iron ore deposit, South Africa, as deduced from ground...Palaeoproterozoic Transvaal Supergroup in the northern Cape Province of South Africa hosts high grade (.60%Fe) hematitic...structure known as the Maremane dome. The bulk of South Africa’s iron ore production is currently provided...megaton Sishen iron ore mine on the northern end of the dome, and the smaller Assmang Beeshoek mine on the...the southern closure. The undeveloped Sishen South deposit, which contains ,400 Mt of high-grade hematite |  | | 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...peak metamorphic conditions. It is suggested that local variations of the metamorphic mineral association...Transvaal Supergroup, manganese ore, Postmasburg, South Africa. Introduction TIlE manganese ores of the Postmasburg...Supergroup is overlain unconformably by red beds of the Gamagara Formation of the late Palaeoproterozoic (2.2-1 |  | | 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...detail of alteration zone in borehole Drak 1 (B). muscovite, giving rise to the K20 enrichment which is characteristic |  | | Journal (article/letter/editorial) | | THF,Postmasburg manganese field,situated in the Northern replacement of the countryrockbymanganeseCapeProvince...In contrast Schneiderh6hn (1931)suggested in the south(Fig. 1). Miningof the manganese orescom- Borchert...ores of the Postmasburg mangacurrently minedat Sishen (VanSchalkwyk andBeukes,1986) nesefieldandprovides...ng AnalyticalTechniques the centralpartof the Gamagara ridge.Siliceous oresoccur in the Easternbelt alongthe...100 the northernand southernextremitiesof the Gamagara manganese oresamples, covering all macroscopically |  | | Journal (volume) | | Banded Iron Formation-Hosted Hematite Ore Deposits John G. McLellan and Nicholas H. S. Oliver 185 Part...Warren Thorne, Steffen Hagemann, Adam Webb, and John Clout v 197 Chapter 9: The Itabirites of the...Approach to the Sishen South Iron Ore Deposit, Northern Cape Province, South Africa, and Its Implication...Deposit, Simandou Range, Republic of Guinea, West Africa I. L. Cope, J. J. Wilkinson, A. J. Boyce, J. B...ore exploration project in the Northern Cape province of South Africa. He completed his B.Sc. (Hons) |  | De Kock, M.O., Monareng, B.F., Blignaut, L., Smith, A.J.B., Beukes, N.J. (2020) Geochemistry of Paleoproterozoic saprolite developed in diabase intruding the Hotazel Formation in the Avontuur deposit of the Kalahari Manganese Field, South Africa. South African Journal of Geology, 123 (1). 1-18 doi:10.25131/sajg.123.0001 | Journal (article/letter/editorial) | | Avontuur deposit of the Kalahari Manganese Field, South Africa M.O. De Kock, B.F. Monareng, L. Blignaut, A... Box 524, Auckland Park 2006, Johannesburg, South Africa e-mail: mdekock@uj.ac.za; bfmonareng@gmail.com;...njbeukes@uj.ac.za © 2020 Geological Society of South Africa. All rights reserved. Abstract A diabase sill...Avontuur deposit of the Kalahari Manganese Field of South Africa displays an 8 m thick paleosaprolitic weathering...base of the ~2.0 Ga red-bed succession of the Gamagara Formation of the Elim Group (Keis Supergroup) |  | Fairey, Brenton J., Timmerman, Martin J., Sudo, Masafumi, Tsikos, Harilaos (2019) The Role of Hydrothermal Activity in the Formation of Karst-Hosted Manganese Deposits of the Postmasburg Mn Field, Northern Cape Province, South Africa. Minerals, 9 (7) 408 doi:10.3390/min9070408 | Journal (article/letter/editorial) | | Deposits of the Postmasburg Mn Field, Northern Cape Province, South Africa Brenton J. Fairey 1,† , Martin J...Geology, Rhodes University, Grahamstown 6139, South Africa Correspondence: h.tsikos@ru.ac.za Current address:...Postmasburg Manganese Field (PMF), Northern Cape Province, South Africa, once represented one of the largest...Postmasburg manganese field; hydrothermal; karst; South Africa Minerals 2019, 9, 408; doi:10.3390/min9070408...(KMF), the Postmasburg Manganese Field (PMF) was South Africa’s largest producer of this important component |  | | Book (edition) | | Southern Africa a Collector’s Guide ■ Rocks, Minerals and Gemstones of Southern Africa & — - ... T ~ '' .rats en&nes L of Southern Africa A Collector’s Guide - Struik Publishers (an operating...Ltd.) Struik House Oswald Pirow Street Foreshore, Cape Town 8001 First edition 1976 Second edition 1983...©E.K. Macintosh Cover design by Neville Poulter, Cape Town Lithographic reproduction by Tien Wah Press...Ltd, Singapore Photoset by McManus Bros (Pty) Ltd, Cape Town Printed and bound by Interpak, Pietermaritzburg |  | | Journal (article/letter/editorial) | | in the Lower Proterozoic sequences of southern Africa Patrick G. Eriksson a and Eric S. C h e n e y b"...Geology, University of Pretoria, Pretoria 0002, South Africa bDepartment of Geology, Rand Afrikaans University...University, P.O. Box 524, Johannesburg 2000, South Africa (Received January 10, 1991; accepted after revision...southern Africa. Precambrian Res., 54: 257-269. Strata > 2.5 to ~< 1.8 Ga in southern Africa appear to...PROVINCE 26°S -26°8 +. J 400kin I aziland l SOUth ~ f r i c a / keso~ho 100kin I i I 26°E C |  | | Book (edition) | | OF OF SOUTH AFRICA MINES GEOLOGICAL SURVEY MINERAL RESOURCES OF REPUBLIC OF THE SOUTH AFRICA...Second World War, and partly as a result of it, South Africa experienced vast industrial expansion. This...official ‘handbook on the mineral resources of South Africa, it has become necessary to revise, or rather...great diversity and magnitude of South African mineral deposits and local mining operations, the Economic...Chamber of Mines of South Africa with Mr G. H. Grange as co-ordinator, and the South, African mining industry; |  | | 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...ancient glaciers, and the glaciation epoch of the northern countries - in Scotland, in Scandinavia, in Finland...northeastern part of Russia, in states of Canada and the Northern Ameriea - they are found here in rivers, where |  | | Journal (article/letter/editorial) | | manganese ore from the Lower Ore Body of the Hotazel Mine. The mineral resemblespoorly polished pyrolusitebut...NATIONAL INSTITUTE FORMETALLURGY, JOHANNESBURG, SOUTH AFRICA, October 1; November 14,1968 REFERENCES lusite...C. Both thesereE., 1961,Ore Microscopy:New York, John Wiley actionsare irreversible,and the time factor...mineralogy of the Kalahari manganesefield north of Sishen, Cape Province: D.Sc. takeplaceat muchlowertemperatures...texturechartsof (1) Dolomite,(2) Quartz, (3) Muscovite,(4) Galena,(5) Sphalerite,(6) Pyrite. 224 -. |  | | Book | | of Canada, and of the Transvaal Supergroup of South Africa, are syntheses considerably superior t o any...University, Auckland Park, PO 524, Johannesburg 2000, South Africa. J.A. BUNTING Exploration Department, BHP...Australia. E.C. PERRY, J R . Department of Geology, Northern Illinois University, De Kalb, Illinois 60115,...DEPOSITIONAL BASIN O F THE TRANSVAAL SUPERGROUP. SOUTH AFRICA N.J. Beukes Introduction . . . . . . . . ..... . . . . . . . . . . . . . . . . . . . . . The Cape Smith-Wakeham Bay basin . . . . . . . . . . . . |  | | Journal (article/letter/editorial) | | brief overview of South Africa's mineral industry: world context and changing local circumstances Received:...important South African mineral resources clearly demonstrates that, omitting hydrocarbon fuels, South Africa...PO Box 74883, Lynnwood Ridge, Pretoria 0040, South Africa and later the kimberlite pipes discovered at...1889, the forerunner of the Chamber of Mines of South Africa (COM), whose member companies were ultimately...opencast and underground mines and quarries in South Africa. Of these workings, 57 produced gold, 62 exploited |  | | Journal (article/letter/editorial) | | are separated by a NE dipping thrust plane in northern Andros. At least a part of the upper unit has...upper pressure limit. For the Eocene event in the northern Cycladic area petrological studies on metabasic...iron ores of synsedimentary origin. At the idle mine of Vitali the braunite ores and manganese-rich micaschists...which contain calcite- and quartz-rich layers with local concentrations of manganese and barium minerals...parentheses): 1. Cymrite (_+ celsian) + barian muscovite + quartz + calcite + piemontite +_tremolite +_thulite |  | | Journal (article/letter/editorial) | | Kumba Resources, P.O. Box 1224, Sishen South, Postmasburg, South Africa e-mail: dennis.alchin@kumbaresources...Department, Rhodes University, Grahamstown, South Africa e-mail: J.Moore@ru.ac.za “Rosh Pinah” – The...corner. Psalm 118:22 © 2005 Geological Society of South Africa ABSTRACT This paper provides a synopsis of...to Early Palaeozoic orogenic belts in southern Africa, has been studied from early in the 20th century...the University of Cape Town to investigate Precambrian rocks in southwestern Africa. Under their auspices |  | | Journal (article/letter/editorial) | | University of the Free State, Bloemfontein, South Africa waynecolliston@ymail.com *Corresponding author:...aesc@iafrica.com b Council for Geoscience, Pretoria, South Africa, jcole@geoscience.org.za Key-words: Namaqua-Natal...below. Mesoproterozoic fold and thrust belts in Africa have traditionally been referred to as Kibaran...rocks of the Matsap Subgroup, Volop Group in the south and Brulpan Group in the north (Moen, 2006; Cornell...on the Kaapvaal Craton and the Hartley/Mapedi/Gamagara Formations (part of thrust sheet I) that underlie |  | | Journal (article/letter/editorial) | | kaolinite-halloysite in the Fe(-Mn) Tamra deposit (Nefza district, NW Tunisia)—Augustin Dekoninck, Béchir Moussi...P-REE-Th deposit, Northern Territory, Australia— Michael Anenburg, Antony D. Burnham, and John A. Mavrogenes...Yaogangxian tungsten deposit, central Nanling district, south China—Wen-Sheng Li, Pei Ni, Jun-Yi Pan, Guo-Guang...United States—Adriana Potra, William T. Garmon, John R. Samuelsen, Andrew Wulff, and Erik D. Pollock...Guangdong Province, SE China: Constraints from muscovite 40Ar-39Ar and zircon U-Pb dating and Hf isotopes—Peng |  | | Journal (article/letter/editorial) | | 960-1004 Precambrian Iron-Formations of Southern Africa N.J. BEUKES Abstract From existing information...1966) and Ierru#inous SOUTHERN Africa is definedas that part of Africa sedimentary rockslessthan 15 percentiron...percentiron. In this southof approximately16ø south-latitude and in- paper,the 15 percentboundaryis not...contentbecauseof a generallack of chemicalanalyses. South West Africa, and Mozambique. This rela(2) Iron-formationis...commonlithologic detailedstudyon iron-formation in southern Africa variety of iron-formationand consistsof chert mesoare |  | | Report (issue) | | famous Mesoarchean Witwatersrand Supergroup in South Africa that contains Earth’s largest gold-uranium deposits...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? .....botryoids at a 350 Ma fossil warm spring at the Tynagh mine, Ireland: (A) The top surface (field of view measures...seepage mound favored—depending on solutes and local pH—development of siderite, ferrous hydroxide, and/or |  | | Journal (article/letter/editorial) | | Stellenbosch, Private Bag X01, Stellenbosch, South Africa, Corresponding author email: ar@sun.ac.za Marcel...Stellenbosch, South Africa email: mstalder@freesurf.ch Dennis Alchin Kumba Resources, Sishen South, P O Box...Postmasburg, South Africa email: dennis.alchin@kumbaresources.com © 2005 Geological Society of South Africa ABSTRACT...ABSTRACT Limitations on the life-of-mine of the sediment-hosted Rosh Pinah deposit urged exploration for...from detailed lithogeochemical traverses on the C Mine and Eastern Orefield, coupled with mineralogical |  | | Book | | Germany Maarten J. de Wit, Port Elizabeth, South Africa François M. Roure, Rueil-Malmaison, France ...borders of Namibia and South Africa. They were split up in the Mesozoic during the south Atlantic Ocean opening”...Ortelius was the first to recognize the match of the South American and African Atlantic margins (Ortelius...translated to ‘if comparisons are made between Asia, Africa and Europe, it is clear that different areas in...Kontinente und Ozeane, Alfred Wegener considered South America, Africa, India and Australia as the main parts of |  | | Journal (article/letter/editorial) | | ophiolitic and orogenic zones. The Buckeye manganese mine in the Franciscan Complex of the California Coast...essential fluxes: a sub-seafloor source ofMn, a local source of very soluble silica and a source of relatively...describe brown Mn-silicates from the Eadd-Buckeye district (Trask, 1950, p.288). However, the name bementite...California and Washington (U.S.A.), Japan, New Zealand, northern Italy, Switzerland, and Austria. In many respects...unknown; ? = possibly. *Refi, rences: [ 1 ] = Buckeye Mine, California, U.S.A. ( H u e b n e r and Flohr, 1990; |  | | Book | | genesis of metamorphic polymetallic deposits of Northern Bavaria (1932—1939) he supported the theory of...on Similar Occurrences Borcher swith in West Africa (Gabon, Angola etc.). PISUTeS etree tes es ee...of the Manganese Deposits of the Northern Cape Province (South Africa). P.G. Sohnge. With 1 Figure. ....Genesis of the King Island (Tasmania) Scheelite Mine. U. BurCHAT = Par rere ctl eo AU eA «Aes, fy AU...and Associated Magnetite Ore from the Pocheon Iron Mine (Korea). Chil-Sup So. With 7 Figures... .. Geochemistry |  | Deng, Jie, Zhang, Kecheng, He, Dongsheng, Zhao, Hengqin, Hakkou, Rachid, Benzaazoua, Mostafa (2020) Occurrence of Sesquioxide in a Mid-Low Grade Collophane-Sedimentary Apatite Ore from Guizhou, China. Minerals, 10 (11) 1038 doi:10.3390/min10111038 | Journal (article/letter/editorial) | | Ca(Mg,Fe)(CO3 )2 , while aluminum is enriched in muscovite KAl2 (AlSi3 O10 )(OH)2 and also found in apatite...calcite, biotite and also included in apatite and muscovite, while the monomer pyrite appears as semi-automorphic...quartz and calcite. Most of goethite, dolomite, muscovite and calcite form intergrowth with apatite, with...respectively. The removal of pyrite, goethite, dolomite, muscovite and calcite in the ore is the key to reduce the...86 km north of Guiyang Guizhou Town Province, 29 south. km away from Kaiyang County from Wenquan Town in |
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