 | | 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) | | 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...are distinguished: the E a s t e r n Belt, the W e s t e r n Belt a n d the M i x e d T y p e (Fig. 2)...of the E a s t e r n Belt. T h e m a n g a n e s e ores of the W e s t e r n Belt are younger. T h e M...occurring in distinct regional belts (Eastern and Western Belt) are small and irregular in size, shape and |  | | Journal (article/letter/editorial) | | of the manganese wadto braunitc, partridgeitc, hematite, andbixbyite. ThewadwasderivedfromMn- andFerichdolomites...THF,Postmasburg manganese field,situated in the Northern replacement of the countryrockbymanganeseCapeProvince...in twodistinctbeltsof deposits, the so-called Western Trnter et al., 1938; De Villiers, 1960; Boardman...In contrast Schneiderh6hn (1931)suggested in the south(Fig. 1). Miningof the manganese orescom- Borchert...ng AnalyticalTechniques the centralpartof the Gamagara ridge.Siliceous oresoccur in the Easternbelt alongthe |  | | Journal (article/letter/editorial) | | Gloucester Mine Gamagara Hills Postmasburg Manganese and Iron-Ore Field South Africa BRUCE CAIRNCROSS...PO Box 524, Auckland Park 2006 Johannesburg, South Africa brucec@uj.ac.za T he Postmasburg manganese...of mineral specimens that are found in these two South African mining regions. However, Postmasburg does...Map showing the Gloucester mine and Gamagara Hills in South Africa, prepared by William Besse. other...Union MangaCouncil for Geoscience, Pretoria, South Africa, specimen MGS 19198, Bruce Cairncross photo |  | 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...the PMF, namely the Western Belt of ferruginous manganese ores and the Eastern Belt of siliceous manganese...Postmasburg manganese field; hydrothermal; karst; South Africa Minerals 2019, 9, 408; doi:10.3390/min9070408 |  | | 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 |  | 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...the Northern Cape Province of South Africa. The samples consist of fine-grained braunite, hematite, and |  | | 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) | | 0861-0128/88/192/1108-1152.50 Mn DEPOSITS, SOUTH AFRICA 1109 Geologic Framework .• •:•:•:•:•:•:•:•:•:•...Stellenbosch). 1110 j. E. DE VILLIERS proximatelynorth-south,and regionalshearingand (includingmetamorphic deposits)...general to be justified,exceptionsto this along a belt which extendsfor about 180 km from schemeare found...Morocco,for instance,hausmanniteand janekke,70 km south-southwest of Postmasburg. It was cobsiteoccurin...transforms to bixbyiteat 600øC,pyrolusiteto bixbyite in Gamagara rocks where they are underlain by at 510øC, bixbyite |  | | 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...reason of the great diversity and magnitude of South African mineral deposits and local mining operations...Chamber of Mines of South Africa with Mr G. H. Grange as co-ordinator, and the South, African mining industry; |  | | 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 |  | | Report (issue) | | ___________________ ----Republic of South Mrica ___________________ _ Cape of Good Hope Province ___________...omali Republic ________ - ____ -_---------- -- South-VVestAfrica _________________________ _ Swaziland...-------Northern Territory ___ -----------------Queensland and New South Wales _______ _ South Australia...----_ Western Australia ___ ------------------New Zealand ______ -----------------------South Island_-----------------...________ _ Southeastern Alaska ___ ------------South-central Alaska _______________ _ East-central Alaska |  | | Report (volume) | | Monazite was mined from stream placers in western North and South Carolina in the late nineteenth a.nd early...in Idaho and Montana, the drainage areas of the western n.nd eastern monazite belts of the southeastern... 1954, Monazite deposits in calcareous rocks, northern Lemhi County, Idaho: Idaho Bur. Mines and Geology...metamorphic rocks derived from the pre-Cambrian Belt series. Crystalline aggregates and disseminated...metamorphism of sandy, argillaceous sediments of the Belt series to a more compatible environment of phosphatic |  | | Report (volume) | | Mineral Belts in Western Sierra C:ourlty, New Mexico, Suggested by Mining Distri.cts, Ceologyt and c...c ·eochemicaf, Anomalies Mineral Belts in Western Sierra County, New Mexico, Suggested by Mining Districts...and geochemical information on mineral belts in western Sierra County, New Mexico, indicates many new areas...Lovering, T. G. (Tom Gray), 1921Mineral belts in western Sierra County, New Mexico, suggested by mining...General summary of the western mineral belt Mineralization in the western belt 5 Phillipsburg and Grafton |  | | Book | | Deposits in Africa, Asia (exclusive of t h e U S S R ) a n d Australasia JOHN DREW RIDGE The Pennsylvania...Frankfurt-am-Main, West Germany Copyright © 1976 John Drew Ridge All Rights Reserved. No part of this publication...him. I have tried to include all ore districts in Africa, Asia (exclusive of the U.S.S.R.)> and Australasia...incluir todos los distritos mineros conocido en Africa, Asia (con exclusion de la Union Soviética), y...of the western hemi sphere, including Greenland. This volume covers mineral deposits in Africa, Asia |  | | Book | | Germany Maarten J. de Wit, Port Elizabeth, South Africa François M. Roure, Rueil-Malmaison, France ...sediments of the Ediacaran Rocha Formation (Dom Felicano Belt) at the Atlantic coast of Uruguay. These metasediments...Oranjemund Group (Gariep Belt) cropping out in the western borders of Namibia and South Africa. They were split...split up in the Mesozoic during the south Atlantic Ocean opening”. Photo by Mathias Hueck Printed on acid-free...Ortelius was the first to recognize the match of the South American and African Atlantic margins (Ortelius |  | | Book | | Mineral Systems Franco Pirajno Geological Survey of Western Australia, Perth, WA, Australia Foreword by Peter...Geological Survey of Western Australia Franco Pirajno Geological Survey of Western Australia 100 Plain...Corporation of South Africa, the Chair of Economic Geology at Rhodes University, South Africa, and since...since 1993, the Geological Survey of Western Australia. He has held visiting professorships at vii viii...appointments at the Astrobiology Centre, University of New South Wales, Sydney, and the China University of Geosciences |  | | Report (issue) | | Mountain .............. Sar Mountain ............... Cape Mountain ............... Uranium possibilities of...Southeastern Alaska. ................. Bastern border belt ............... Uranium possibilities ...................... Western border belt ............... Uranium possibilities ........... Western satellitic intrusive...intrusive belt ........ Uranium possibilities ........... U9 52 55 . 5§ 53 59 60 62 63 Alaska Bailroad-Iliamna...Aleutian region ...................... Ill Northern Alaska ....................... 113 ....... |  | | Book (edition) | | OF CAPE COLONY THE SOUTH AFRICAN SCIENCE SERIES. EDMONDS' for (H.) ELEMENTARY BOTANY, South Africa...PLANTS AND THEIR WAYS IN SOUTH AFRICA. By BERTHA STONEMAN, Huguenot ton, South Africa. grams, and Map. With...College, Welling- Illustrations, 3s. Dia- 6d. SOUTH AFRICAN FLOWERING PLANTS : for the use of Beginners...AND CALCUTTA. AN INTRODUCTION TO THE GEOLOGY OF CAPE COLONY BY A. W. KOGEBS, D.Sc., F.G.S. AND L...TOIT, B.A., F.G.S. OF THE GEOLOGICAL SURVEY OF CAPE COLONY WITH A CHAPTER ON THE FOSSIL REPTILES OF |  | | Report (volume) | | ........................... North Carolina and South Carolina.............................. Georgia........................\.................... Blue Ridge region.......................................................................................... South Dakota.................................;..........mines............................ 178 Deposits south of Cristo and at Dos Bocas.................................................................. 181 South America........................................ |  | | Journal (article/letter/editorial) | | Orogen) are interpreted as a Pan-African orogenic belt incorporated into the Appalachian Orogen during...Williams el al. 1972, 1974; Williams 1978, 1979). The western parts of the orogen, including the Humber and Dunnage...terrestrial sediments. The zone, continuous in the northern Appalachians to the present continental margin...belts of Europe, and the Pan-African belts of North Africa (e.g. Hughes 1972; Rast et al. 1976; Strong et...however, has indicated that the zone includes all of Cape Breton Island. The southern limit of the Avalon |  | | Report (volume) | | Mineral Foundation 63 Conyngham Street Glenside South Australia 5065 Australia (Orders: Tel. (08) 379-0444...Mineralogy and geochemistry of Archaean greenstone belt-hosted Mn formations and deposits of the Dharwar...Penganga Group of the Pranhita-Godavari valley, South India NICHOLSON, K., NAYAK, V. K. & NANDA, J. K...nodules with particular reference to the tropical South Pacific VON STACKELBERG, W. Growth history of manganese...Mn-oxide mineralization of Kato Nevrokopi, Macedonia, northern Greece: controls on formation of the Mn 4+ oxides |  | | Journal (article/letter/editorial) | | zone in northern Vietnam that has been known as the Paleogene high–temperature metamorphic belt. The rock...during the collision between the Indochina and South China blocks. Keywords: Metamorphosed bauxite, Eclogite–facies...kyanite + corundum from the Red River shear zone in northern Vietnam. We investigated the protolith of the...assemblages, metamorphic grade in the western belt is lower than the eastern belt. GEOLOGICAL OUTLINE The Red...Red River shear zone runs from northern Vietnam to southeastern Tibet. It is more than 1000 km long, and |  | Lin, Yitian, Tang, Dongjie, Shi, Xiaoying, Zhou, Xiqiang, Huang, Kangjun (2019) Shallow-marine ironstones formed by microaerophilic iron-oxidizing bacteria in terminal Paleoproterozoic. Gondwana Research, 76. 1-18 doi:10.1016/j.gr.2019.06.004 | Journal (article/letter/editorial) | | shows that the Fe-rich mineral is predominantly hematite that resulted from dehydration of amorphous...Basin was a continental rift developed on the northern margin of the MA North China Block between ~1...by syndepositional faults in the basin. The western belt is characterized by thin depositional thickness...centered at the Xuanhua–Chicheng area. The middle belt is characterized by thick stromatolitic dolostone...geographically covers the northern part of the PT Miyun–Huairou area. The eastern belt is typified by very |  | | Book | | Geology, Rand Afiikaam University, Johannesburg, 2000 South Afiica KENT C. CONDIE Department of Geoscience,...Cornplq Universiteit van Pretoria, 0001 Pretoria, South Afiica H.H. HELMSTAEDT Deparhnent of Geological...Complq Universiteit van Pretoria, 0001 Pretoria, South Africa ROBERT A. WIEBE Departnient of Geology, Franklin...America ................................. ....... The South American Shield ......................... .... ...Morocco. 59 - Pharusian belt. 63 - Dahomey belt. 64 Damara belt. southern Africa . . . . . . . . . . . |
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