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The Sulphides of the Uitkomst Complex, Badplaas, South Africa
Dissertation (MSc)--University of Pretoria, 1996.
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| _version_ | 1867613494907502592 |
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| access_status_str | Open Access |
| author2 | De Waal, Sybrand Abraham |
| author_browse | De Waal, Sybrand Abraham |
| author_facet | De Waal, Sybrand Abraham |
| collection | Thesis |
| dc_rights_str_mv | © 2021 University of Pretoria. All rights reserved. The copyright in this work vests in the University of Pretoria. No part of this work may be reproduced or transmitted in any form or by any means, without the prior written permission of the University of Pretoria. |
| description | Dissertation (MSc)--University of Pretoria, 1996. |
| format | Thesis |
| id | oai:repository.up.ac.za:2263/82510 |
| institution | University of Pretoria (South Africa) |
| last_indexed | 2026-06-10T12:37:02.876Z |
| license_str | Other — see source repository |
| provenance_str_mv | Harvested via OAI-PMH from UPSpace — University of Pretoria Institutional Repository |
| publishDate | 2021 |
| publishDateRange | 2021 |
| publishDateSort | 2021 |
| publisher | University of Pretoria |
| publisherStr | University of Pretoria |
| record_format | dspace |
| source_str | UPSpace — University of Pretoria Institutional Repository |
| spelling | oai:repository.up.ac.za:2263/82510 The Sulphides of the Uitkomst Complex, Badplaas, South Africa De Waal, Sybrand Abraham Merkle, R.K.W. (Roland Karl Willi), 1954- Van Zyl, Anna Maria UCTD sulphides of the Uitkomst Complex, Badplaas, Dissertation (MSc)--University of Pretoria, 1996. The Uitkomst Complex is situated on the farms Uitkomst 541JT and Slaaihoek 540JT, twenty kilometres north of Badplaas, in the Mpumalanga Province, South Africa. It is a mineralized, layered, basic to ultrabasic intrusion of Bushveld age (2,05 - 2,06 Ga). The Complex is intruded into sedimentary rocks of the lower Transvaal Supergroup. It is elongated in a north-westerly direction and is exposed over a total distance of 9km. The intrusion is interpreted by earlier workers to have an anvil-shaped cross section with a true thickness of approximately 800m. It is enveloped by metamorphosed, and in places brecciated, country rocks. Post-Bushveld diabase intrusions caused considerable vertical dilation of the Complex, which consists of six lithological units (from bottom to top) : Basal Gabbro (Bgab), Lower Harzburgite (Lhzbg), Chromitiferous Harzburgite (PCR), Main Harzburgite (Mhzbg), Pyroxenite (PXT) and Gabbronorite (GN). The lower three units carry potentially economic quantities of base metal sulphides with some PGE enrichment. The sulphide minerals occur as' disseminated, net-textured, and massive segregations. The primary sulphides are pyrrhotite (po), pentlandite (pn), and chalcopyrite (cp), with cubanite (cb), mackinawite (me), pyrite (py), millerite (ml), and cobaltite (cob) occurring with these at depth in the Complex. The assemblages are comprised of po+ pn + cp; po+ pn + cp + cb (Mhzbg); po + pn + cp + me (Mhzbg and PCR); po+ pn + cp + py (Lhzbg, PCR and Bgab); py + cp +ml+ po (Lhzbg and PCR) and po+ pn + cp + cob (Lhzbg and PCR). Chemical analyses of the sulphide minerals show a definite increase in Ni and decrease in Fe in pentlandite and pyrrhotite towards the base of intrusion. Image analysis indicates that the average grain size of the disseminated sulphide blebs increases towards the base of the intrusion where approximately 80 per cent of the grains are larger r-- qL>v\)- l'J'll,)c 7 than 450 micron. In the Mhzbg, PCR and Lhzbg zones the flame pentlandite forms between 1 and 5 percent of the total pentlandite which is indicative of the lower limit of the nickel losses to be expected in beneficiation. Granular pentlandite has an average grain size of greater than 11 micron and flame pentlandite measures 3 to 10 micron in section. Geology MSc Unrestricted 2021-11-02T10:19:49Z 2021-11-02T10:19:49Z 2021 1996 Dissertation * http://hdl.handle.net/2263/82510 © 2021 University of Pretoria. All rights reserved. The copyright in this work vests in the University of Pretoria. No part of this work may be reproduced or transmitted in any form or by any means, without the prior written permission of the University of Pretoria. application/pdf University of Pretoria |
| spellingShingle | UCTD sulphides of the Uitkomst Complex, Badplaas, The Sulphides of the Uitkomst Complex, Badplaas, South Africa |
| title | The Sulphides of the Uitkomst Complex, Badplaas, South Africa |
| title_full | The Sulphides of the Uitkomst Complex, Badplaas, South Africa |
| title_fullStr | The Sulphides of the Uitkomst Complex, Badplaas, South Africa |
| title_full_unstemmed | The Sulphides of the Uitkomst Complex, Badplaas, South Africa |
| title_short | The Sulphides of the Uitkomst Complex, Badplaas, South Africa |
| title_sort | sulphides of the uitkomst complex badplaas south africa |
| topic | UCTD sulphides of the Uitkomst Complex, Badplaas, |
| url | http://hdl.handle.net/2263/82510 |