 | | Report (issue) | | SURVEY OF SOUTH AFRICA COUNCIL FOR GEOSCIENCE GEOLOGICAL SURVEY OF SOUTH AFRICA MINERALOGY OF SOUTH AFRICA:... COUNCIL FOR GEOSCIENCE GEOLOGICAL SURVEY OF SOUTH AFRICA Scientific Editor R.D. Dixon Linguistic and...Council for Geoscience (Geological Survey of South Africa), 280 Pretoria Street, Silverton, Pretoria or........................... 69 5.1 Overview of South African Occurrences ..............................LAYEREDSUITE,BUSHVELDCOMPLEX.... 111 MINERALOGY OF SOUTH AFRICA: TYPE-MINERAL SPECIES AND TYPE-MINERAL NAMES |  | | Journal (article/letter/editorial) | | genesis of the manganese ore deposits of the Postmasburg manganese-field, South Africa E. von Plehwe-Leisen...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...mineralization history and the genesis of the manganese ore deposits, as described in this paper, the |  | | Journal (article/letter/editorial) | | development of the Sishen South (Welgevonden) iron ore deposit, South Africa, as deduced from ground gravity...Palaeoproterozoic Transvaal Supergroup in the northern Cape Province of South Africa hosts high grade (.60%Fe) hematitic...hematitic and specularitic iron and manganese mineralisation. The mineralisation is primarily exposed along...structure known as the Maremane dome. The bulk of South Africa’s iron ore production is currently provided...Resources megaton Sishen iron ore mine on the northern end of the dome, and the smaller Assmang Beeshoek |  | | Journal (article/letter/editorial) | | Gloucester Mine Gamagara Hills Postmasburg Manganese and Iron-Ore Field South Africa BRUCE CAIRNCROSS Department...Park 2006 Johannesburg, South Africa brucec@uj.ac.za T he Postmasburg manganese and iron-ore field (Gutzmer...relative to its northerly neighbor, the Kalahari manganese field. From a mineralogical standpoint, this is...that are found in these two South African mining regions. However, Postmasburg does have some claim to mineralogical...mineralogical fame if the manganese-rich diaspore from the Lohathla, Glosam, and Gloucester mines is |  | | Journal (article/letter/editorial) | | chemistry of oxidefacies manganese ores of the Postmasburg manganese field, South Africa J. GUTZMERAND N. J...Park, 2006, South Africa Abstract The diagenetic to very low-grade metamorphic manganese ores of the...the Postmasburg manganese field provide a unique example of oxide-facies manganese ores in a Palaeoproterozoic...peak metamorphic conditions. It is suggested that local variations of the metamorphic mineral association...Supergroup, manganese ore, Postmasburg, South Africa. Introduction TIlE manganese ores of the Postmasburg manganese |  | 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) | | Karst-Hosted Manganese Deposits of the Postmasburg Mn Field, Northern Cape Province, South Africa Brenton...Geology, Rhodes University, Grahamstown 6139, South Africa Correspondence: h.tsikos@ru.ac.za Current address:...Abstract: The Postmasburg Manganese Field (PMF), Northern Cape Province, South Africa, once represented...of the largest sources of manganese ore worldwide. Two belts of manganese ore deposits have been distinguished...Western Belt of ferruginous manganese ores and the Eastern Belt of siliceous manganese ores. Prevailing models |  | 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...Associated Manganese Mines of South Africa Limited, PO, Mancorp Mine, 8423, Beeshoek, South Africa Received:...ore bodies under discussion. Deposits of iron, manganese, crocidolite asbestos and d i a m o n d s have...described as far back as 1812 (Wagner, 1928), and the manganese deposits were investigated by Hall (1926) m o...m a s b u r g and Sishen, while manganese was mined in the Postmasburg M a n g a n e s e Field and is |  | 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) | | OCCURRENCES FROM THE POSTMASBURG MANGANESE FIELD, NORTHERN CAPE PROVINCE, SOUTH AFRICA GELU COSTIN Department...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...Johannesburg, Johannesburg, South Africa ABSTRACT Samples of manganese-rich rock containing two compositional...core obtained from the Postmasburg area in the Northern Cape Province of South Africa. The samples consist |  | | Journal (article/letter/editorial) | | Sishen and Sishen South (Welgevonden) iron ore deposits, Northern Cape Province, South Africa M. D. Carney...Palaeo-Proterozoic Transvaal Supergroup in the Northern Cape Province of South Africa is host to the largest known resources...Hematite occurrences on the Sishen South exploration project (some 65 km south of Sishen mine) are, at present...intensive investigation. At both the Sishen and Sishen South deposits, mineralisation is found within lithologies...Oliphantshoek Supergroup. The Sishen and Sishen South deposits are located close to the western margin |  | Stoch, B., Anthonissen, C. J., McCall, M-J., Basson, I. J., Deacon, J., Cloete, E., Botha, J., Britz, J., Strydom, M., Nel, D., Bester, M. (2018) 3D implicit modeling of the Sishen Mine: new resolution of the geometry and origin of Fe mineralization. Mineralium Deposita, 53 (6) 835-853 doi:10.1007/s00126-017-0784-y | Journal (article/letter/editorial) | | faults that show relatively minor uplift to the south, probably due to the Lomanian Namaqua-Natal Orogeny... Sishen Mine near the town of Kahtu in the Northern Cape Province (RSA) represents one of the largest... Gardner Williams Avenue, Paardevlei, Cape Town, South Africa 2 Sishen Iron Ore Company (Pty) Ltd...., Private Bag X506, Kathu 8446, South Africa 3 Kumba Iron Ore, Corporate Office, Centurion Gate, 124...124 Akkerboom Road, Centurion 0157, South Africa 4 Department of Earth Sciences, Stellenbosch University |  | | Journal (article/letter/editorial) | | (1970) O n the Ore-Deposition and Geochemistry of Manganese H. BORCHERT Mineralog.-petrograph. Institut der...Clausthal, Western G e r m a n y The distribution of manganese in eruptive rocks has been elaborated together..."potential ore metal" are characteristic for manganese. Therefore, Mn is strongly concentrated in magmatic...as well as to the big ore bodies of Postmasburg in South Africa. Under marine conditions with the development...development of a "carbonic-acid-zone", manganese may be dissolved in solutions with much higher pH- and |  | | Journal (article/letter/editorial) | | Superlarge Deposit—Kalahari Manganese Ore Field (Northern Cape, South Africa): Geochemistry of Isotopes...presence in manganese ores, the type of manganese oxide mineralization, isotope signatures of manganese carbonates...on the geol ogy of the Kalahari manganese field suggest that manganese ore formation was widespread at... The Northern Cape manganese ore province (South Africa) is confined to the Kalahari manganese field...accommodates huge manganese reserves and the KMF represents the largest manganese ore basin in terms |  | Basson, I.J., Anthonissen, C.J., McCall, M.J., Stoch, B., Britz, J., Deacon, J., Strydom, M., Cloete, E., Botha, J., Bester, M., Nel, D. (2017) Ore-structure relationships at Sishen Mine, Northern Cape, Republic of South Africa, based on fully-constrained implicit 3D modelling. Ore Geology Reviews, 86. 825-838 doi:10.1016/j.oregeorev.2017.04.007 | Journal (article/letter/editorial) | | Relationships at Sishen Mine, Northern Cape, Republic of South Africa, Based on Fully-Constrained Implicit...Relationships at Sishen Mine, Northern Cape, Republic of South Africa, Based on Fully-Constrained Implicit...Relationships at Sishen Mine, Northern Cape, Republic of South Africa, Based on Fully-Constrained Implicit...West, South Africa 2 Sishen Iron Ore Company (Pty) Ltd., Private Bag X506, Kathu, 8446, South Africa...Centurion Gate, 124 Akkerboom Road, Centurion, 0157, South Africa Abstract A fully-constrained, implicit, 3D |  | Fairey, Brenton, Tsikos, Harilaos, Corfu, Fernando, Polteau, Stéphane (2013) U–Pb systematics in carbonates of the Postmasburg Group, Transvaal Supergroup, South Africa: Primary versus metasomatic controls. Precambrian Research, 231. 194-205 doi:10.1016/j.precamres.2013.03.010 | Journal (article/letter/editorial) | | systematics in carbonates of the Postmasburg Group, Transvaal Supergroup, South Africa: Primary versus metasomatic...Rhodes University, PO Box 94, Grahamstown 6140, South Africa Department of Geosciences, University of Oslo...2013 Available online 2 April 2013 Keywords: Postmasburg Group Mooidraai Formation Makganyene Formation...which overly the Hotazel iron formation in the Postmasburg Group of the Transvaal Supergroup, and comparison...Supergroup, which covers the Kaapvaal craton in South Africa, has played a central role due to its good stratigraphic |  | | Journal (article/letter/editorial) | | XXII. A new occurrence of zunyite near Postmasburg, South Africa. 1 (With Plate IX.) By Louis T. NEL, D...D.Sc. Geological Survey, U n i o n of South Africa. W i t h a note on the Crystallography b y L. J. ...on the geological survey of the Postmas- burg manganese fields during 1927 the rare mineral zunyite, a...author's report on ' The geology of the Postmasburg manganese deposits and the surrounding country ',... Geological Survey of the Union of South Africa (Special Publication), Pretoria, 1929, 104 pp. [Min. |  | | Journal (article/letter/editorial) | | towards understanding the genesis of manganese deposits in southern Africa and how some of these relate to...isotope signatures in Precambrian rocks from South Africa. Through this mutual contact, Jens enquired...Kalahari manganese field, but no details were available. I approached Associated Manganese Mines of South...South Africa and they made a small research grant available for Jens to come to the Rand Afrikaans University...“processes of upgrading of low-grade sedimentary manganese ores to highgrade ores along normal faults in |  | | Report (issue) | | 89:97(2)± X-ray Powder Pattern: Postmasburg district, South Africa. 3.20 (100), 9.59 (65), 1.922 (25)...perhaps analyzed as Na and K. (2) Postmasburg district, South Africa. (3) NaLiAl2 (Al2 Si2 )O10 (OH)2...a minor constituent in manganese oxide ore (Postmasburg district, South Africa). Association: Corundum...Turkey); diaspore, braunite, bixbyite (Postmasburg district, South Africa). Distribution: Some material from...Lohatla, Postmasburg district, Transvaal, and in the Wessels mine, near Kuruman, Cape Province, South Africa |  | | Journal (article/letter/editorial) | | Precambrian Griquatown Fault Zone in the Northern Cape Province, South Africa Received: 11 June 1996 / Accepted:...(GFZ) is a major target for Pb-Zn exploration in South Africa. The sedimentary, structural and thermal history...activity between 2550 and 2500 Ma and a major post-Postmasburg Group (less than 2223 Ma) episode of mainly vertical...carbonates, towards the east. Metamorphic overprint south of the GFZ, based on illite crystallinity, and ¯uid...zone are above the oil window. Metamorphic peaks south of the fault zone are at 1750 Ma and 1213 Ma and |  | | Journal (article/letter/editorial) | | Johannesburg, South Africa brucec@uj.ac.za SUGILITE Wessels Mine, Kalahari Manganese Field Northern Cape Province...Province, South Africa P urple is a relatively uncommon color in the mineral world, and one of the most...deposit of sugilite is in the Kalahari manganese field in South Africa and in one mine in particular, the...Wessels mine (Dixon 1985). If it were not for the South African deposits, sugilite would be considered a...Washington, D.C. The Wessels mine sugilite in South Africa sets the benchmark for sugilite worldwide, volumetrically |  | | Journal (article/letter/editorial) | | Alkaline-carbonatite, silicate volcanic complex, Gardar rift, South Greenland, age and petrogenesis, 499 Allanite, as...Alteration, in eudialyte from the North Qbroq centre, South Greenland, 99 Alteration/weathering, of ilmenite...o f kintoreite, PbFe30aO4)2(OH,H20)6, from New South Wales, 123; identification of ferropyrosmalite by...inclusions from metalliferous deposits in the Cloncurry District, NW Queensland, 291 Averievite, Cuso2(VO4)2.nMX:...Bixbyite, and associated manganese ores of the Postmasburg manganese field, South Africa, mineralogy and mineral |  | | Journal (article/letter/editorial) | | MARCH-APRIL, __ THE MANGANESE DEPOSITS SOUTH ALEX. I933 No. :2 . OF POSTMASBURG, AFRICA. L. DU TOIT...122 INTRODUCTION. THE manganesedeposits'of Postmasburg,which have attracteda great deal of attention...Shonein 1922, and are situatedcloseto Postmasburg in the Cape Province (Lat. 28ø 20' S.; Long. 23ø 04'...argillaceous material through the circulationof manganese-bearing solutions,rather than a result reachedalready...bibliographyat end of article. MANGANESE DEPOSITS OF POSTMASBURG. 97 sufficientdetail in supportof |  | | Journal (article/letter/editorial) | | 1. Location map showing the Wessels mine in South Africa, prepared by William Besse. BRUCE CAIRNCROSS...Johannesburg, South Africa brucec@uj.ac.za Wesselsite Wessels Mine Kalahari Manganese Field South Africa Figure...named for, the Wessels mine, Kalahari manganese field, South Africa (Giester and Rieck 1996). Other members...illustrating the percentage of ore in the Kalahari manganese field formed during various geological events...events (right). Original, low-grade sedimentary manganese ore (blue bar, top left), such as mined at the |  | | Journal (article/letter/editorial) | | Karst-Hosted Fresh-Water Paleoproterozoic Manganese Deposits, Postmasburg, SouthAfrica JENSGUTZMERANDNICOLAS...SouthAfrica Abstract The Paleoproterozoie Postmasburg manganese fieldprovides an excellent example of a...Subgroup of theTransvaal Supergroup. Theferruginous manganese orebodies areirregularly shaped andconfined by...karst-hosted manganese deposits suggest thatthemanganese oresin the Postmasburg manganese fieldweredeposited...fieldweredeposited asresidual manganese wad.Theoresunderwent diagenetic compaction andlowergreenschist faciesmetamorphism |  | | Report (issue) | | Utah, USA; average of two analyses. (2) Postmasburg, South Africa; by electron microprobe. (3) (Mn, Fe)2...lithophysal cavities in rhyolite; in metamorphosed manganese ores. Association: Topaz, spessartine, beryl...pseudobrookite, hematite (rhyolites); braunite (manganese ores). Distribution: In the USA, from the Thomas...Bellerberg volcano, two km north of Mayen, Eifel district, Germany. At Långban, Värmland, near Murjek...Sitapár, Chindwara district, Central Provinces, and the Kajlidongri mine, Jhabua district, Madhya Pradesh |  | | Journal (article/letter/editorial) | | 07:07 11 November 2014 The Manganese AdventureThe South African Manganese Fie/ds by Bruce Cairncross...O. Box 524, Aukland Park 2006, Johannesburg, South Africa. 236 pages; 1997; U.S. $90 plus U.S. $15 surface...world-famous Northern Cape manganese deposits, which include the great Kalahari manganese field and the...the Postmasburg region in general. The book is dedicated to Guido Sacco, father of Desmond Sacco whose...figures prominently throughout the book. The Manganese Adventure is divided into seven major chapters |
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