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Platreef

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Journal Article
Journal: Economic Geology
Published: 01 September 2007
Economic Geology (2007) 102 (6): 1091–1110.
...D. A. Holwell; A. J. Boyce; I. McDonald Abstract The Platreef, the world’s third largest platinum group element (PGE) deposit, is a 10–400-m thick pyroxenitic unit at the base of the northern limb of the mafic Bushveld Complex, hosting PGE mineralization in association with base metal sulfides...
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Journal Article
Published: 01 December 2012
South African Journal of Geology (2012) 115 (4): 535–550.
...A.A. MITCHELL; R.N. SCOON Abstract Detailed logging of relatively deep drill-core from the Akanani Project, in the northern limb of the Bushveld Complex, South Africa, has afforded new perspectives on the Platreef and its origins. In line with most recent studies, we believe the mineralization...
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Journal Article
Published: 01 December 2016
South African Journal of Geology (2016) 119 (4): 623–638.
... Mine. These localities access the Platreef of the northern Bushveld Complex. Platinum-group element enrichment trends in the BMS are similar in the Overysel and Sandsloot samples, although the overall PGE concentrations in the Overysel BMS are lower than those in the Sandsloot BMS. A general decoupling...
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Journal Article
Published: 01 November 2015
The Canadian Mineralogist (2015) 53 (6): 1109–1127.
... Complex Platreef Elements such as S, Se, and Te (chalcogens), as well as As, Bi, and Sb (semimetals), are important complexing agents (ligands) for precious metals and form a wide range of compositionally diverse minerals with the platinum-group elements ( Cabri 1981 , Daltry & Wilson 1997...
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Journal Article
Journal: Economic Geology
Published: 01 December 2013
Economic Geology (2013) 108 (8): 1923–1952.
...Marina A. Yudovskaya; Judith A. Kinnaird; Alexander V. Sobolev; Dmitry V. Kuzmin; Iain McDonald; Allan H. Wilson Abstract Previously unknown Lower zone ultramafic sequences are described beneath the Platreef in the northern limb of the Bushveld Complex (South Africa). The Lower zone is separated...
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Journal Article
Journal: Economic Geology
Published: 01 March 2013
Economic Geology (2013) 108 (2): 365–377.
... is a chemically conservative tracer that indicates the involvement of crustal sulfur in marginal Ni-Cu-(PGE) deposits. In this study we use mass-independent fractionation of sulfur isotopes to evaluate the sulfur budget of the Platreef—the marginal PGE-bearing horizon of the northern limb of the Bushveld Complex...
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Journal Article
Published: 01 December 2011
The Canadian Mineralogist (2011) 49 (6): 1349–1384.
...Marina Yudovskaya; Judith Kinnaird; Anthony J. Naldrett; Andrey V. Mokhov; Iain McDonald; Christian Reinke Abstract The lateral variation in platinum-group mineral (PGM) assemblages in the magmatic constituents of the Platreef, Bushveld Complex, have been investigated using whole-rock PGE data...
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Series: Reviews in Economic Geology, Reviews in Economic Geology
Published: 01 January 2011
DOI: 10.5382/Rev.17.11
EISBN: 9781629490243
... Abstract The Platreef is one of the largest and most valuable Ni-Cu-PGE orebodies on Earth. It is located at the base of the northern limb of the 2.06 Ga Bushveld Complex and stratigraphic relationships with other limbs of the complex and stratiform orebodies such as the Merensky Reef and UG2...
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Journal Article
Journal: Geology
Published: 01 December 2008
Geology (2008) 36 (12): 979–982.
...Sarah C. Penniston-Dorland; Boswell A. Wing; Paul A.M. Nex; Judith A. Kinnaird; James Farquhar; Michael Brown; Elizabeth R. Sharman Abstract The Platreef ore horizon of the Bushveld Complex, South Africa, is the third largest platinum group element ore deposit in the world, but the origin of its...
FIGURES
Journal Article
Published: 01 March 2008
South African Journal of Geology (2008) 111 (1): 21–26.
...Frederick Roelofse; Lewis D. Ashwal Abstract This paper describes the occurrence of a rare form of exsolution texture known as symplectitic augite in a melagabbronorite from the lower portion of the Platreef in the Northern Sector of the Northern Limb as intersected by the Moordkopje (MO-1) drill...
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Journal Article
Published: 01 December 2007
South African Journal of Geology (2007) 110 (4): 611–616.
...Iain McDonald; David A. Holwell Abstract The Platreef in the northern limb of the Bushveld Complex comprises pyroxenites and gabbros that contain enormous quantities of Ni, Cu and platinum-group elements (PGE) concentrated from a larger volume of magma than represented by the Platreef itself. Chill...
FIGURES
Journal Article
Published: 01 February 2006
Mineralogical Magazine (2006) 70 (1): 83–101.
...D. A. Holwell; I. McDonald; P. E. B. Armitage Abstract Platinum group mineral (PGM) assemblages in the Platreef at Sandsloot, northern Bushveld Complex, in a variety of lithologies reveal a complex multi-stage mineralization history. During crystallization of the Platreef pyroxenites, platinum...
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Journal Article
Published: 01 September 2005
South African Journal of Geology (2005) 108 (3): 381–396.
...Tawanda D. Manyeruke; Wolfgang D. Maier; Sarah-Jane Barnes Abstract The Platreef is a platinum group elements and base metal enriched mafic/ultramafic layer situated along the base of the northern limb of the Bushveld Complex. The present study contains a detailed petrographic and geochemical...
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Journal Article
Journal: Economic Geology
Published: 01 August 1986
Economic Geology (1986) 81 (5): 1096–1104.
...J. M. Barton; R. Grant Cawthorn; J. White Abstract The Platreef is a thick (greater than 100 m) coarse-grained feldspathic orthopyroxenite which transgresses northward across metasediments of the Transvaal Sequence and onto a granitic floor. It is overlain by main zone gabbronorites. Vertical...
Journal Article
Journal: Economic Geology
Published: 01 July 1985
Economic Geology (1985) 80 (4): 988–1006.
...R. Grant Cawthorn; J. M. Barton; Morris J. Viljoen Abstract The Platreef, on the basal contact of the Rustenburg Layered Suite, has been studied on the farm Overysel, 30 km north of Potgietersrus. The major element, trace element, and Sr isotope geochemistry of the Platreef feldspathic pyroxenite...
Journal Article
Journal: Economic Geology
Published: 01 October 1982
Economic Geology (1982) 77 (6): 1395–1404.
...S. B. Gain; A. B. Mostert Abstract On the farm Drenthe, the Platreef consists of a complex assemblage of norites, melanorites, pyroxenites, serpentinites, and xenoliths of dolomite. It is a zone of up to 250 m thick between the basal contact of the complex and the overlying main zone norites...
Image
NiO versus Fo in <b>Platreef</b> olivine. Upper <b>Platreef</b>, M Plat = <b>platreef</b>.
Published: 01 September 2005
Figure 4. NiO versus Fo in Platreef olivine. Upper Platreef, M Plat = platreef.
Image
Plot of Y versus Zr. U Plat = Upper <b>Platreef</b>, M Plat = Middle <b>Platreef</b>, L P...
Published: 01 September 2005
Figure 10. Plot of Y versus Zr. U Plat = Upper Platreef, M Plat = Middle Platreef, L Plat = Lower Platreef. Stippled line represents back projection of B1 Bushveld parental magma ( Curl, 2001 ).
Series: Special Publication
Publisher: Society of Economic Geologists (SEG)
Published: 01 January 2018
DOI: 10.5382/SP.21.09
EISBN: 9781629496405
.... On farm Turfspruit, an anhydrite-bearing sedimentary raft of the Duitschland Formation separates the Platreef from underlying Lower zone peridotites. The proportion of anhydrite across the raft increases from negligible in corundum-sillimanite-magnetite hornfels at the base to 95 to 100% in anhydrite...
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Journal Article
Journal: Economic Geology
Published: 01 May 1981
Economic Geology (1981) 76 (3): 568–579.
.... Anhydrite normally associated with evaporitic sequences is likely to have been preserved in the Malmani dolomite when it was incorporated as xenoliths into the Bushveld magma. Sulfur isotope studies on sulfides from the Platreef zone give a range of delta 34 S values of from 6.8 to 9.2 per mil. As the delta...