 | | 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) | | 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...mainly of braunite group minerals, including braunite, partridgeite and bixbyite, with rare braunite II and...and Ca-poor, silica-depleted braunite. Iron-poor partridgeite is distinguished from Fe-rich bixbyite and...Ca-poor, silica-depleted braunite is reported for the first time, Braunite and partridgeite formed during |  | | Journal (article/letter/editorial) | | 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...southernextremitiesof the Gamagara manganese oresamples, covering all macroscopically distinct ridge (Fig. 1; Hall |  | 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...ownsand hastestedthe southernpart of the Eastern Belt, but has not yet exported; it possesses huge depositsof...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 |  | | 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 |  | 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...area in the Northern Cape Province of South Africa. The samples consist of fine-grained braunite, hematite |  | | 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)...and these cryptomelane,psilomelane,hollandite,braunite,and youngdepositshavegreatlyhamperedthe searchfor...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 |  | | 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) | | 67, 1972, pp. 83-102 Manganite, Hausmannite, Braunite: Features, Modes of Origin D. F. HEWETT Abstract...writer hasgenerallyacceptedthe interpretationof the braunite,eachof whichhasbeenidentified widely original...Oklahoma;GrahamIsland,Brith ate, but less commonlyother oxides. Braunite is Columbia,Fig. 3, Table 1, DFH-277; and L• dearly...analyses,Table 1, DFH-295. MANGANITE,HAUSMANNITE,BRAUNITE 85 FIG. 3.' Plumoseaggregatesof fine manganitealternatingwith...In mostplaceswherehausmannite is abundant,as in Braunite, 3Mn20 a' MnSiO a the Olympic Mountains, Washington; |  | | 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) | | THE EXPLORATION FOR MANGANESE DEPOSITS IN THE URAL BELT a B. M. Mikhaylov & V. S. Rogov a a All-Union...THE EXPLORATION FOR MANGANESE DEPOSITS IN THE URAL BELT, International Geology Review, 27:9, 1069-1076 To...THE EXPLORATION FOR MANGANESE DEPOSITS IN THE URAL BELT B. M. Mikhaylov and V. S. Rogov Downloaded by...reflects the geologic evolution of the Ural belt. The Ural mobile belt includes the Ural Mountains, Mugodhary...stratigraphic levels. This enables us to consider the belt as a single geological entity and to draw analogies |  | | 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 (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 |  | | 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 (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 |  | | 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 | | UNDTCD, UN-assisted Project—Mineral Exploration in Northern Tanzania PO Box 641, Arusha, Tanzania 1981 ay...is international acceptance throughout both the western world and Soviet bloc, a publication of a few pages...the UN-assisted Project-Mineral Exploration in Northern Tanzania for preparation of the bulk of the diagrams...Basin and Range Province, western USA 2 Porphyry molybdenum deposits of the western cordillera, North America...Arcs A Tectonic Setting BMineral Deposits II Ridge-Ridge Transform Fault Extensions into Continental Margins |  | | Journal (article/letter/editorial) | | Eurasian plates. The northern boundary of the Dinarides is related to the northern African margin (Adria–Apulia)...the Carpathians, is genetically related to the South Eurasian edge. The geology of the Dinarides is constrained...Pb, Zn and Sb deposits that mostly occur in the western Vardar zone. The geology and metallogeny of Southern...Dinarides and Southern Tisia. The Dinarides, an orogenic belt positioned between the Adria microplate to the southwest...namely the “Variscan peri-Mediterranean metamorphic belt”, and the internally-located, peri-Apulian, fossilbearing |  | | Book | | Y PRESS Cambridge, New York, Melbourne, Madrid, Cape Town, Singapore, São Paulo, Delhi, Tokyo, Mexico...Introduction Peninsular Gneiss and Granitoids of Western Dharwar Western Dharwar Schist Belts Peninsular Gneiss...Dharwar Schist Belts Kimberlites and Lamproites Western and Eastern Dharwar Blocks: Similarity, Contrast...Introduction Southern (Bastar) Crustal Province (SCP) Northern (Bundelkhand) Crustal Province (NCP) Tectonic...Dalli–Rajhara–Rowghat–Bailadila Belt Gold in Kotri Belt Gold in Sonakhan Greenstone Belt 233 233 234 235 239 256 |  | | Book | | comfort. Users of chromite, who must the USSR, South Africa, Albania, and wish that chromite deposits were...Republic of South Africa by the Department of Mines and the Geological Survey of South Africa; such profiles...Greece to Czechoslovakia, Mexico to Canada, South Africa to Jordan, and Australia to Sri Lanka. Industrial...from the initial letters of Asbestos Mines of South Africa, is an ash gray or brown material with vitreous...(Mann, 1983). nia; the USSR; the Italian Alps; New South Wales, Austral- ia; Cyprus). (2) Stratiform ultramafic |  | | 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 |  | | Report (issue) | | ...................... 23 Cataclastic gneiss south of Ituango............. 24 Origin of the Valdivia...an area of some 6000 square kilometers in the northern part of the Central Cordillera of the Colombian...coal beds are an important energy resource in western subzone IIA, and have a good potential for greater...zone was divided arbitrarily by a median north-south line into subequal parts which were studied concurrently... Prior to the present program, quadrangle 1-8 south of plate 1 was mapped by Gerardo Botero A, and hisi |  | | Journal (article/letter/editorial) | | UNOU PT 178•E oC VATIA _?,,•i i•VU o ¸ NORTHERN • LAU GROUP ( POST-OROGENIC ROCKS)% LOMAIVITIGROUP...greenschistfacies meta- morphismsimilarto the Eocenestrata of western Viti Levu anda comparable ageis suspected. Crook...rocks occur in the Wainimala strata of western sion in western Viti Levu (Tholo plutonic suite-- FIJI...orogeny; these strata now occur in an arcuate fold belt striking roughly east-west (Fig. 3) which has the...the mationof a large, subaerialshieldvolcanoin western strikeof the Lomaiviti islandsand the elongateform |  | | Book | | host rock, and, within each group, from north to south. In the third part three papers deal with comparative.... 193 Massive Sulfides in the Greenstone Belt of South-Central Chile - An Overview G. Alfaro and S...Banded Iron Formation and Massive Sulfide Orebodies, South-Central Chile: Geologic and Isotopic Aspects S....Sulfide Occurrences in the Metamorphic Basement of South-Central Chile F. Herve, R. J. Pankhurst, M. Brook...Piren Alto Cu-(Zn) Massive Sulfide Occurrence in South-Central Chile - A Kieslager-Type Mineralization |
|
