Abstract The Sudbury Igneous Complex (SIC) contains abundant sulphides, especially near the base, and hosts one of the world’s largest nickel and copper deposits. The Bushveld Complex (BC
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There are enough platinum group element deposits in the Bushveld Complex in South Africa to supply world demands for many decades or even a century using current mining techniques. …
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of Bushveld Complex magmas resulted in the differential last 90 million years have been summarized by McCar- segregation of minerals, forming the …
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Cawthorn, R. and Molyneux, T. (1986) Vanadiferous Magnetite Deposits of the Bushveld Complex. Mineral Deposits of Southern Africa, 2, 1251-1266.
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Evidence for Fluid in the Footwall Beneath Potholes in the Merensky Reef of the Bushveld Complex R. GRANT CAWTHORN & KELLY L. POULTON Department of Geology, University of the Witwatersrand, Wits 2050, Johannesburg, South Africa
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Volume 15: Layered Intrusions Edited by Richard Grant Cawthorn - Department of Geology, University of the Witwatersrand, Johannesburg, P.O. WITS 2050, South Africa Pages 1-531 (1996) Previous volume Next volume
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1981115· All content in this area was uploaded by R. Grant Cawthorn on Feb 04, 2019
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199891· Abstract The Bushveld Complex formed by the crystallization of successive injections of magma, which were sufficiently closely spaced in time that each previous magma …
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201661· Abstract The Bushveld Complex (South Africa) is the largest layered intrusion on Earth and plays a considerable role in our understanding of magmatic differentiation and ore-forming processes. In this study, we present new geochemical data for apatite-hosted multiphase inclusions in gabbroic cumulates from the Bushveld Upper Zone.
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R Grant Cawthorn,Identification of Anorthite enriched Plagioclase Antecrysts in the Bushveld Complex,South Africa,Journal of Petrology,Volume 60.Geological map of the Bushveld …
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Grant Cawthorn’s profile on The ConversationMain fields of specialization: Origin of mafic igneous intrusive rocks and their mineral deposits. Main research …
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75· Phosphorus contents in cumulus rocks occurring close to the level of apatite appearance in the basic rocks of the Bushveld Complex, South Africa, provide a method of calculating the proportion of intercumulus component in these rocks. Previous experimental studies have accurately constrained the phosphorus content of magmas when apatite …
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Forthe Bushveld Complex and the Skaergaard Int usion the appearance ofcumulus apatite is ndicated byAp. APATITE IN LAYERED INTRUSIONS 301 occurs, of the StiUwater Int usion isextremely observed crystallization sequence (Cawthorn and high in C1, and ecreases irregularly pwards. Davies, 1983).
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1981115· However~ the typical norites plo~ on the fractionation trend for the Bushveld Complex in Fig. 6 and we suggest they are the products of slight dif'' ferentiation from the parental pyroxeaitic magma. 12 Grant Cawthorn etal.
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Mineral compositions show that fractionation was unidirectional to the extreme top of the Bushveld Complex (Eales & Cawthorn, 1996; Ashwal et al., 2005; Tegner et al., 2006).
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Mineral compositions show that fractionation was unidirectional to the extreme top of the Bushveld Complex (Eales & Cawthorn, 1996; Ashwal et al., 2005; Tegner et al., 2006).
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21· There is mineralogical, chemical and isotopic evidence that the layered mafic-ultramafic sequence of the Bushveld Complex, the Rustenburg Layered Suite (RLS), was formed through at least 4 major pulses of replenishing magma (e.g., Eales, 2002; Kruger, 2005; Cawthorn, 2015).
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The Merensky Reef and the underlying Upper Group 2 chromitite layer, in the Critical Zone of the Bushveld Complex, host much of the world’s platinum-group element (PGE) mineralization.
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R. Grant Cawthorn Abstract The mafic rocks of the Bushveld Complex, South Africa, were emplaced into a stable cratonic shield some 2.06 b.y. ago, and have remained remarkably well preserved from deformation, metamorphism and low temperature alteration, at least partly by its isostatic impact on the entire crustal thickness. The generation and emplacement of possibly 1 …
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A detailed geochemical study is presented of the uppermost Critical Zone, especially of the footwall and hanging wall to the Merensky Reef, at Impala Platinum Mines in the Bushveld Complex. The approximately 100 m-thick sequence below the Merensky Reef consists of 13 distinct layers which have sharp boundaries. They are adcumulates with varying proportions of …
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201153· An extensive sequence of basement sills, pyroxenitic to noritic in composition, related to the Bushveld Complex occurs within the Transvaal …
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as crosses) of the Bushveld Complex, with the associated granites (shown by plus signs) occurring to the east. An alternative interpretation of the shape and …
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201661· Abstract The Bushveld Complex (South Africa) is the largest layered intrusion on Earth and plays a considerable role in our understanding of magmatic differentiation and ore-forming processes. In this study, we present new geochemical data for apatite-hosted multiphase inclusions in gabbroic cumulates from the Bushveld Upper Zone.
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Vertical chemical gradients ina single rain of magnetite from the Bushveld Complex, South Africa R.GRANT CAWTHORN, T. S. McCARTHY, AND G. DAVIES
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