 | | 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) | | 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 |  | 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) | | Beeshoek and Rooinekke Mines, Griqualand West, South Africa W.S. Grobbelaar, M.A. Burger, A.I. Pretorius...Manganese Mines of South Africa Limited, PO, Mancorp Mine, 8423, Beeshoek, South Africa Received: 13 May...iron ore is mined near P o s t m a s b u r g and Sishen, while manganese was mined in the Postmasburg M...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) | | deposits of the Postmasburg manganese-field, South Africa E. von Plehwe-Leisen, D.D. Klemm Department...r t h e r n C a p e P r o v i n c e / S o u t h Africa. T h e y are a s s o c i a t e d to a geological...events. Local geology The stratigraphic development of the Griqualand West Sequence in the Northern Cape...the lithostratigraphic classification of SACS (South African Committee for Stratigraphy) of 1980 is used...The erosional period in the North, East and the South of the Maremane Dome lasted until Asbestos Hills |  | Costin, Gelu, Fairey, Brenton, Tsikos, Harilaos, Gucsik, Arnold (2015) Tokyoite, As-Rich Tokyoite, and Noélbensonite: New Occurrences From the Postmasburg Manganese Field, Northern Cape Province, South Africa. The Canadian Mineralogist, 53 (6) 981-990 doi:10.3749/canmin.1500063 | Journal (article/letter/editorial) | | THE POSTMASBURG MANGANESE FIELD, NORTHERN CAPE PROVINCE, SOUTH AFRICA GELU COSTIN Department of Geology...Rhodes University, P.O. Box 94, Grahamstown 6140, South Africa Department of Earth Science, MS-126 Rice University...Rhodes University, P.O. Box 94, Grahamstown 6140, South Africa ARNOLD GUCSIK Department of Geology, University...University of Johannesburg, Johannesburg, South Africa ABSTRACT Samples of manganese-rich rock containing...from the Postmasburg area in the Northern Cape Province of South Africa. The samples consist of fine-grained |  | | Journal (article/letter/editorial) | | relativelyshallow)shows that the manganese peroxideminerals(pyrolusite, cryptomelane,etc.) are found only to a depth...minerals(Hew- portant contributionshave been made by John de ett and Fleischer,1960), and the GriqualandWest...0861-0128/88/192/1108-1152.50 Mn DEPOSITS, SOUTH AFRICA 1109 Geologic Framework .• •:•:•:•:•:•:•:•:•:•...Asbesbergebanded iron-formation in the Postmasburg-Sishen areabe redefinedasthe Manganoreironformation of...FIG. 1. Simplifiedgeologicmap of the Griquatown-Sishen area (Institutefor CartographicAnalysis,Universityof |  | | 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) |  | | 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...Particularly widely known were ore minerals such as pyrolusite, that was described for the first time by Plinium...ancient glaciers, and the glaciation epoch of the northern countries - in Scotland, in Scandinavia, in Finland |  | | Journal (article/letter/editorial) | | (Karatau, Khubsugul, and South China basins), Australia (Georgina basin), Africa Fig. 1. Geological structure...Karatau range (Kazakhstan). (b) Section of the northern Tszyangsi Province (Bushinskii, 1966). (c) Section...Depression (Bushinskii, 1966). (d, e) Sections in the northern Sinan Depression (Bushinskii, 1966). (1) Gneisses...(11) Mn-bearing rocks. (Upper Volta, Benin), and South America (Minas Gerais basin). North America is the...Fe–Mn hydroxides. These ore minerals constitute local autonomous laminae alternating with thin layers |  | | Journal (issue) | | affiliated with the Friends of Mineralogy publisher John S. White Division of Mineralogy The Smithsonian...Arthur Roe Famous Mineral Localities: The Brumado District, Bahia, Brazil..................................Thomssen, Walt Risch, Star Northam, Carolyn Wilson, John Muntyan and Wayne DeBrusk assisted with record keeping...Brazil) Pierre and Nellie Bariand (Paris, France) F. John Barlow (Appleton, WI) Ron Bentley (Windsor, CT)...Cureton, David Wilber, Miguel Romero, Richard Webster, John Barlow and Rustam Kothavala made cash donations |  | 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 |  | | Journal (article/letter/editorial) | | probably below the water table (4) Ramsdellite,and pyrolusite Oxidizing conditions prob(replacementof groutire...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 |  | | 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) | | P. R. oB Vrr-trnns2 GeologicalSuruey, Pretoria, South AJrica AND F. H. HBnnsrnrN3 Chemical Physics Group...ustr'ialResearch,Pretor'ia,South AJrica. Alsrucr Braunite from the Northern Transvaal has cell dimensions...47a SiOr) from the Black Rock manganese mine, northwestern Cape Province has been - I4t/ acd'.This is consideredto...1e65). 2 Present address: Research Laboratories, South African Iron and Steel Corporation, Pretoria. 3...HERBSTEIN miles northwest of Potgietersrust, Northern Transvaal. Manganese is present in the low-grade |  | | Journal (article/letter/editorial) | | Deposit—Kalahari Manganese Ore Field (Northern Cape, South Africa): Geochemistry of Isotopes (δ13C and...1134/S0024490212030054 The Northern Cape manganese ore province (South Africa) is confined to the Kalahari...southeastern Kalahari Desert (Fig. 1) 60 km north of the Sishen Settlement. The province accommodates huge manganese...Manganese ores of the Kalahari Desert (Northern Cape province, South Africa) are confined to rocks of the Hotazel...Supergroup (Fig. 2). At ore deposits in the Northern Cape province, the Early Proterozoic section of the |  | | Journal (article/letter/editorial) | | produced by conversion of todorokite-birnessite. Pyrolusite and cryptomelane, conventionallyconsidered as...environments by hydrothermal/volcanogenic processes (e.g. Northern Apennine Ophiolitic Complex, Italy, Bonatti et...the lower Proterozoic Transvaal Supergroup, South Africa (Beukes, 1983, 1984; Miyano and Beukes, Dr...association with Mn4+-bearing oxides such as pyrolusite and/or cryptomelane stabilized by late diagenesis...of these primary oxides but are dominated by pyrolusite, cryptomelane and/ or psilomelane (roman~chite) |  | | Journal (article/letter/editorial) | | todorokite from the Kalahari manganese field, South Africa J. Gutzmer and Nicolas J. Beukes Department...University, P.O. Box 524, Auckland Park 2006, South Africa e-mail: jg@na.rau.ac.za; njb@na.rau.ac.xa ABSTRACT...braunite-kutnahorite lutite at the Smartt Mine in the Kalahari manganese field, South Africa. Geological evidence and...place during Tertiary uplift and tilting of the South African Subcontinent. Careful chemical studies of... with fibre lengths up to 10cm, occur at Smartt mine in the Kalahari manganese field. The occurrence |  | | Journal (article/letter/editorial) | | ProterozoicTransvaalSupergroup in the northern Cape Province, South Africa (Fig. 1A),mostprobablyrepresents...Wessels-typeore thus at, Whatis now, the BlackRock mine (Fig. lB). In demarcates an areain whicha high degreeof...sedimentarybraunite-kutnohoriteMamatwan-type Pyrolusite manganolutiteoresand alsodoesnot take into consideration...metastable. 710 Mn ORE: HOTAZEL FORMATION, S. AFRICA TABLE3. RepresentativeMineral Assemblages in...Mamatwan-typeore (Table 1), considerableCaO must (1) 2 pyrolusite-- bixbyite+ 0.50• (2) 3 bixbyite = 2 hausmannite+ |  | | Journal (article/letter/editorial) | | history (tens of millions of years) combined with local conditions favoring low erosion rates. The physiographic...profile from the Serra da Moeda (MO) to the Sapecado mine (SAP) at the Serra do Itabirito. iron-formations...western limit of the QF is the Serra da Moeda, its northern limit the Serra do Curral, the eastern limit the...ancient erosion surface developed before the Africa– South America break-up (the Gondwana Surface of King...supergene enriched iron orebodies in the region. 2.2. Local geology and geomorphology Three adjacent iron mines |  | | 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; |  | | Journal (article/letter/editorial) | | wide development of gran ite–greenstone zones (South Africa, Western Austra lia, Ukraine, and others),...Indostan cratons, eocratons of the basements of the South American, African, and Western Australian platforms...the Proterozoic as well (Lim popo, southeastern Africa; Western gneiss belt, Aus tralia; and Belomorian...slightly meta morphosed. The rocks and ores contain pyrolusite, cryptomelane, manganite, and braunite. Rocks...and pyroxene. The Khoshchevat deposit (Odessa district, Ukraine) is assigned to the marble weathering |  | | 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 |  | Dasgupta, Somnath, Banerjee, H., Fukuoka, M., Bhattacharya, P.K., Roy, Supriya (1990) Petrogenesis of metemorphosed manganese deposits and the nature of the precursor sediments. Ore Geology Reviews, 5 (4) 359-384 doi:10.1016/0169-1368(90)90039-p | Journal (article/letter/editorial) | | distinct from hausmannite(~). Recrystallized pyrolusite is identified only in greenschist facies rocks... In the greenschist facies, braunite(i) rims pyrolusite at the contact with quartz (assemblage iv; Dasgupta...from hydrothermally affected Kalahari deposits, South Africa. This phase does not occur in any other deposit... 1973. Precambrian iron-formations of southern Africa. Econ. Geol., 68: 960-1004. Bhattacharya, P.K.... O.A., 1901. Manganese deposits of the Quelez district, State of Minas Gerais, Brazil. Am. J. Sci., 18 |  | | Book (volume) | | Papers and Discussions Volume I , I JOHANNESBURG SOUTH AFRICAN INSTITUTE OF MINING AND METALLURGY 1961... 01", ~TALLUf>iYY. © Copyright 1961 by The South African Institute of Mining and Metallurgy Ext'racts...I (1v DEC 196f Printed in t!te Republic of South Africa by Hortors Limited, Johannesburg V r. 1 The...and n1anagement of the gold mining industry in South Africa -C. B. ANDERSON . . . . . . . . . page r J ... ( 2. The economy of the Union of South Africa-W. J. BusSCI-IAU 9 3. An introduction to the physical |  | | Book | | Bruckard CSIRO Mineral Resources Flagship, Clayton South, VIC, Australia J.M.F. Clout Ironist Pty Ltd, Nedlands...Deev CSIRO Mineral Resources Flagship, Clayton South, VIC, Australia E. Donskoi CSIRO Mineral Resources...Flagship, Clayton South, VIC, Australia N. Haque CSIRO Mineral Resources Flagship, Clayton South, VIC, Australia... Clayton South, VIC, Australia R.J. Holmes CSIRO Mineral Resources Flagship, Clayton South, VIC, Australia...Jahanshahi CSIRO Mineral Resources Flagship, Clayton South, VIC, Australia A. Jankovic Metso Process Technology |
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