 | | 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 |  | 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...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 |  | 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) | | 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) | | 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...cut off by the parallel GamagaraFault. (2) The Eastern,which more preciselyconsists of an arcuate chain...ganeseCo. ownsand hastestedthe southernpart of the Eastern Belt, but has not yet exported; it possesses huge...on Doorn Put, but over a gooddeal of the Western Belt, saveat either end, it is presentas mere remnants |  | | 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 |  | | 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...'ostmasburg v ,6p Fe-deposit v V ¾ v v • v ¾ v Cape Town'•v v v •. v v v v F•c. 1. Regional...withlow-angle uneonformity byLate Beeshock in the northern and southern extremities of the domewheretheyconstitute...conglomerate finesupwardinto a sucFormationalongthe north-south-striking, westerlydipping The Doornfontein BlackRidgethrust |  | | 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; |  | | 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 |  | | Report (volume) | | ........................... North Carolina and South Carolina.............................. Georgia.................................................. South Dakota.................................;..........mines............................ 178 Deposits south of Cristo and at Dos Bocas.................................................................. 181 South America............................................................................. Eurasia and Africa............................................... |  | | 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 |  | | 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; |  | | Report (volume) | | ore and tunnel into carbonate ore; B, Sketch of south pit of East Fork mine, showing upper bench____ 33...Mountain' City on the north to Sweetwater on the south. Mr. H. V. Maxwell, of Hampton, was especially helpful...southeast and the Cumberland escarpment, which is the eastern edge of the Cumberland Plateau, on the northwest...Mountain, which stands a little south of the Virginia State line, is the eastern boundary of Tennessee to the...the gorge of Watauga River. South of Doe River the highest range, more than 6,000 feet in altitude, is |  | | Book | | Y PRESS Cambridge, New York, Melbourne, Madrid, Cape Town, Singapore, São Paulo, Delhi, Tokyo, Mexico...Granitoids of Eastern Dharwar Eastern Dharwar Schist Belts Kimberlites and Lamproites Western and Eastern Dharwar...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...12/15/2011 5:05:15 PM vi Contents Gold in Raigarh Belt 257 Copper–Molybdenum (–Gold) Mineralisation at |  | | Report (volume) | | summary of the western mineral belt Mineralization in the western belt 5 Phillipsburg and Grafton districts...Kingston district, including North Percha Creek and South Percha Creek 15 areas Location 15 Production 15...Geologic setting 15 Geochemical information 18 South Perch a Creek-Trujillo Canyon gap 18 Tierra Blanca...Mountain-Juniper Peak gap 19 Tierra Blanca district-eastern part 20 Location 20 Production 20 Geologic setting...General summary of the eastern mineral belt 21 Mineralization in the eastern belt 24 Iron Mountain mineralized |  | | Book | | UNDTCD, UN-assisted Project—Mineral Exploration in Northern Tanzania PO Box 641, Arusha, Tanzania 1981 ay...the UN-assisted Project-Mineral Exploration in Northern Tanzania for preparation of the bulk of the diagrams...sulphide deposits in extensional inter-arc basins, eastern Australia 5 Preservation potential Back-arc Marginal...Angola, Brazil and Uruguay Kimberlites in western Africa, Brazil and Australia Basic/ultrabasic intrusions...Upper Cenozoic sulphur and gold-silver deposits in eastern Japan III Continental Lineaments and Mineralization |  | | Journal (article/letter/editorial) | | types. Of special interest is the Pambak-Zangezm belt of copper-molybdenum "porphyry" type deposits in...ores of Kadzharan, Agarak and Dastakert are in this belt. The deposits are within or at the contacts of quartz...ten deposits of Hercynian age. The deposit of eastern Kounrad consists of steeply dipping quartz veins...lengths of several hundred kilometers. The Alay belt in the Kirgiz SSR and Kweichow in southeastern China...the succession of genetic hyPotheses concerning a belt of some 30 copper deposits ranging about a thousand |  | | 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...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...J-8 and the northwest quadrant of quadrangle K-8, south of J-8. Mapped by Facultad de Mimas, Other areas |  | | 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 |  | | 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 | | 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 |  | | Journal (article/letter/editorial) | | Johannesburg, Auckland Park 2006, Johannesburg, South Africa M. RHALMI, Paleoproterozoic Mineralization...Johannesburg, Auckland Park 2006, Johannesburg, South Africa, and Department of Earth Sciences, Faculty of...Johannesburg, Auckland Park 2006, Johannesburg, South Africa, and Department of Geology, Presidency College...Geologic Setting The Imini district is located south of the Central High Atlas Mountains of Morocco,...the manganese mineralization that is known along a belt 20 km long and 400 to 1,000 m wide (modified after |  | | Journal (article/letter/editorial) | | UNOU PT 178•E oC VATIA _?,,•i i•VU o ¸ NORTHERN • LAU GROUP ( POST-OROGENIC ROCKS)% LOMAIVITIGROUP...orogeny; these strata now occur in an arcuate fold belt striking roughly east-west (Fig. 3) which has the...well tion a few small volcanic centers in the northern as in the open-file exploration reports of mining...beddedagglomerate, the tuf- in the Wainivesi district of eastern Viti Levu. Withfaceous matrix of which has fine-graded...occurrencesinclude hydrothermal deposits, batholith. In eastern Viti Levu depositsof metasomaticmetasomaticreplacementbodies |  | | Report (issue) | | ___-__-----_____--________ 27 Section of lavas south of Black Canyon__.____________-_-_________-____...part of a. rectangular area 35 miles north and south by 24 miles east and west, which lies 19 miles west...only by a low gap, form an almost continuous north-south range that rises about 2,500 feet above the highest...Range. The town of Pioche lies midway on the. eastern foot of the Ely Range. ROOKS OF THE PIOOHB REGION...tuffs were measured in Condor Canyon, near the south end of the Ely Range. The age of the lavas is not |  | | Book | | t a t e d Bibliographies of Mineral Deposits in Africa, Asia (exclusive of t h e U S S R ) a n d Australasia...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...Greenland. This volume covers mineral deposits in Africa, Asia exclusive of the U.S.S.R., and Australasia...Philippines, and Japan are included with Asia. In South Africa, the deposits are arranged by prov inces, in |
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