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Journal articles on the topic 'Postmasburg'

Author: Grafiati
Published: 4 June 2021
Last updated: 18 February 2022

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1

Gutzmer, Jens, and Nicolas J. Beukes. "Karst-hosted fresh-water Paleoproterozoic manganese deposits, Postmasburg, South Africa." Economic Geology 91, no. 8 (1996): 1435–54. http://dx.doi.org/10.2113/gsecongeo.91.8.1435.

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2

Zheng, Hong. "Refinement of an Amesite-2H1 Polytype from Postmasburg, South Africa." Clays and Clay Minerals 45, no. 3 (1997): 301–10. http://dx.doi.org/10.1346/ccmn.1997.0450301.

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3

Varentsov, I. M., and V. N. Kuleshov. "Rare Elements—Markers of the Formation Setting of Manganese and Iron Ores in the Kalahari and Postmasburg Manganese Fields (South Africa): Communication 2. Postmasburg Iron and Manganese Field." Lithology and Mineral Resources 54, no. 5 (2019): 412–28. http://dx.doi.org/10.1134/s0024490219050067.

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4

Zietsman, P. C., and L. E. Zietsman. "Florisitc diversity at Kolomela mine on the Ghaap Plateau, Postmasburg, Northern Cape Province." Indago 35, December (2019): 1–33. http://dx.doi.org/10.38140/00679208/indago.v35.a1.

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5

Varentsov, I. M., and V. N. Kuleshov. "Rare elements — setting markers of the formation of the manganese and iron ore deposits of Kalahari and Postmasburg areas (South Africa). Communication 2. Iron- and manganese ore of Postmasburg area." Литология и полезные ископаемые, no. 5 (October 20, 2019): 466–85. http://dx.doi.org/10.31857/s0024-497x20195466-485.

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In the world resources of manganese and iron ores, a significant place belongs to the Postmasburg ore field (South Africa), enclosed in rocks of the Transvaal Supegroup. Ore deposits have the nature of karst residual accumulations. A number of elements (B, Cr, Ni, Zn, Ge, As, Se, Mo, Ag, Cd, Sb, Te, W, Pb, REE) form a characteristic association that sheds light on the geochemistry of the ore formation processes. Of these, the most representative elements are: Mo, As, Ag and REE. Molybdenum is distinguished by the chemisorption incorporation nature of accumulation in the ores under consideratio
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6

Marais, Lochner, Jan Cloete, Deidre van Rooyen, Stuart Denoon-Stevens, and Verna Nel. "Place attachment and social disruption in Postmasburg, a rapidly growing South African mining town." GeoJournal 84, no. 1 (2018): 71–83. http://dx.doi.org/10.1007/s10708-018-9851-x.

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7

Moore, J. M., S. Polteau, R. A. Armstrong, F. Corfu, and H. Tsikos. "The age and correlation of the Postmasburg Group, southern Africa: Constraints from detrital zircon grains." Journal of African Earth Sciences 64 (February 2012): 9–19. http://dx.doi.org/10.1016/j.jafrearsci.2011.11.001.

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8

Gutzmer, J., and N. J. Beukes. "Mineralogy and mineral chemistry of oxide-facies manganese ores of the Postmasburg manganese field, South Africa." Mineralogical Magazine 61, no. 405 (1997): 213–31. http://dx.doi.org/10.1180/minmag.1997.061.405.05.

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AbstractThe diagenetic to very low-grade metamorphic manganese ores of the Postmasburg manganese field provide a unique example of oxide-facies manganese ores in a Palaeoproterozoic palaeokarst setting. The ores are composed mainly of braunite group minerals, including braunite, partridgeite and bixbyite, with rare braunite II and Ca-poor, silica-depleted braunite. Iron-poor partridgeite is distinguished from Fe-rich bixbyite and the occurrence of Ca-poor, silica-depleted braunite is reported for the first time. Braunite and partridgeite formed during early diagenesis but remained stable under
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9

von Plehwe-Leisen, E., and D. D. Klemm. "Geology and ore genesis of the manganese ore deposits of the Postmasburg manganese-field, South Africa." Mineralium Deposita 30, no. 3-4 (1995): 257–67. http://dx.doi.org/10.1007/bf00196361.

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10

Fairey, Brenton, Harilaos Tsikos, Fernando Corfu, and Stéphane Polteau. "U–Pb systematics in carbonates of the Postmasburg Group, Transvaal Supergroup, South Africa: Primary versus metasomatic controls." Precambrian Research 231 (July 2013): 194–205. http://dx.doi.org/10.1016/j.precamres.2013.03.010.

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11

Wehner, Todd, James McCreight, Roger Ellis, and Mariana Jooste. "Germplasm Expedition to Collect Wild Cucurbits in the Republic of South Africa." HortScience 32, no. 3 (1997): 495D—495. http://dx.doi.org/10.21273/hortsci.32.3.495d.

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A germplasm expedition was organized to collect seeds in the Republic of South Africa. There was an abundance of wild cucurbits there in 1996 because of an unusually rainy summer. Southern Africa is a major center of diversity for melons of Cucumis and Citrullus, and there were many plants with mature fruits along roadsides, and in other areas that had been recently disturbed. The team met in Johannesburg on 25 Apr. 1996, and covered 4213 km (passing through 35 cities and towns) located in four provinces in the northern half of the country. The expedition passed through Pretoria, Potgietersrus
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12

Costin, Gelu, Brenton Fairey, Harilaos Tsikos, and Arnold Gucsik. "Tokyoite, As-Rich Tokyoite, and Noélbensonite: New Occurrences From the Postmasburg Manganese Field, Northern Cape Province, South Africa." Canadian Mineralogist 53, no. 6 (2015): 981–90. http://dx.doi.org/10.3749/canmin.1500063.

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13

Cairncross, Bruce. "The Where of Mineral Names: Gamagarite, Gloucester Mine, Gamagara Hills, Postmasburg Manganese and Iron-Ore Field, South Africa." Rocks & Minerals 94, no. 3 (2019): 280–85. http://dx.doi.org/10.1080/00357529.2019.1567231.

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14

Yamaguchi, K. E. "Geochemical and isotopic constraints on the origin of Paleoproterozoic red shales of the Gamagara/Mapedi Formation, Postmasburg Group, South Africa." South African Journal of Geology 109, no. 1-2 (2006): 123–38. http://dx.doi.org/10.2113/gssajg.109.1-2.123.

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15

Fairey, Brenton J., Martin J. Timmerman, Masafumi Sudo, and Harilaos Tsikos. "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, no. 7 (2019): 408. http://dx.doi.org/10.3390/min9070408.

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The Postmasburg Manganese Field (PMF), Northern Cape Province, South Africa, once represented one of the largest sources of manganese ore worldwide. Two belts of manganese ore deposits have been distinguished in the PMF, namely the Western Belt of ferruginous manganese ores and the Eastern Belt of siliceous manganese ores. Prevailing models of ore formation in these two belts invoke karstification of manganese-rich dolomites and residual accumulation of manganese wad which later underwent diagenetic and low-grade metamorphic processes. For the most part, the role of hydrothermal processes and
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16

Varentsov, I. M., and V. N. Kuleshov. "Rare Elements—Markers of the Formation Setting of Manganese and Iron Ore Deposits in the Kalahari and Postmasburg Fields (South Africa): Communication 1. Kalahari Manganese Field." Lithology and Mineral Resources 54, no. 4 (2019): 333–49. http://dx.doi.org/10.1134/s0024490219040060.

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17

Varentsov, I. M., and V. N. Kuleshov. "Rare elements — setting markers of the formation of the manganese and iron ore deposits of Kalahari and Postmasburg areas (South Africa). Communication 1. Kalahari manganese field." Литология и полезные ископаемые, no. 4 (July 9, 2019): 364–86. http://dx.doi.org/10.31857/s0024-497x20194364-386.

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In manganese ores of the Hotazel Formation (Transvaal supergroup) of the Lower Proterozoic, associated with banded ferrous silicites, high concentrations of a number of rare elements (B, Ge, W, Mo, Cr, Ni, Zn, Cd, Pb, Ag, Bi, As, Sb, Te, Se) were determined. High boron contents in oxide-carbonate ores (manganese lutites) are considered as a consequence of the concentration by chemsorbtion of this element on Mn-carbonates. It is proposed that as a result of hydrothermal transformations, a wide range of ore-forming (mainly Fe, Mn) and rare elements (including REE) was removed from the underlying
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18

Perold, J., and C. Birch. "Benefits of including resistivity data in a resource model — an example from the Postmasburg Manganese Field." Journal of the Southern African Institute of Mining and Metallurgy 119, no. 3 (2019). http://dx.doi.org/10.17159/2411-9717/2019/v119n3a6.

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