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Showing 1 to 20 of 20 for “"Bushveld Igneous Complex"”.
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The use of sulfide mineral chemistry to understand PGE mineralization processes in the Northern Limb of the Bushveld Igneous Complex
The Platreef is a complex lithological unit defining the base of the Northern Limb of the Bushveld Igneous Complex (BIC) and typically characterized by complex magma-footwall interaction. It is of interest primarily because it contains significant PGE-Ni-Cu mineralization and there is no consensus …
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A petrographical and mineralogical investigation of the rocks of the Bushveld Igneous Complex in the Tauteshoogte-Roossenekal area of the Eastern Transvaal
… occupied by rocks of the epicrustal phase of the Bushveld Complex, and consists largely of Rooiberg Felsite and granophyre as well as leptite, microgranite and granodiorite. Numerous veins of finegrained granite traverse the leptite which is considered to be highly metamorphosed felsite. These …
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Assessing the extent of local assimilation within the Platreef, Northern Limb of the Bushveld Igneous Complex, using sulfur isotopes and trace element geochemistry
… footwall units in the Northern Limb of the Bushveld Igneous Complex (BIC) has resulted in a complex local contamination of in this maficultramafic intrusive body, including the units containing platinum group element (PGE) mineralization. To assess the extent of incorporation of non-magmatic …
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Investigating depressant behaviour in the flotation of selected Merensky ores
… the southern section of the Merensky reef in the Bushveld Igneous Complex.
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Developing a framework for the design of the milling and rougher circuits for a platinum-bearing UG2 ore
In the western limb of the Bushveld Igneous Complex, platinum is mined predominantly from two reefs – Merensky and UG2. Most of the platinum group minerals (PGM’s) in Merensky ore are associated with base metal sulphides (BMS), and thus Merensky concentrators will usually resemble simple BMS …
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A geochemical study of diamonds from Cullinan diamond mine, South Africa
… has been dated at 1180 ± 30 Ma and intrudes the Bushveld Igneous Complex (2.05 Ga). This study explores the geochemistry of a suite of one hundred selected diamonds and their associated mineral inclusions. The majority of the diamonds described here are peridotitic (94%) and the remainder are …
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Stratigraphic and structural interpretation of seismic reflection data across selected sections of the Kaapvaal Craton
… Craton's western margin, the northern margin or Bushveld lines (flanking the Thabazimbi-Murchison Lineament and across the western extremity of the Bushveld Igneous Complex) and the Kaapvaal Craton interior. The seismic data was interpreted using Charisma seismic interpretation software, Geoframe …
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Investigation of operating parameters in a vertical stirred mill
… of coarser grained ores, more mineralogically complex ores are being treated. These complex ores usually have finer grained valuable minerals. Liberation of these finer grained valuable minerals lies in grinding finer. Grinding to these fine sizes is energy intensive and using standard ball …
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Investigation of the surface properties of gangue minerals in PGM bearing ores
… associated sulphides by froth flotation from the Bushveld Igneous Complex is complicated by the presence of naturally floatable gangue minerals such as talc. Although talc is present in small quantities it has a disproportionate effect on concentrate grade by enhancing froth stability and …
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Petrography and geochemistry of hydrothermal breccias hosted in the Schrikkloof Formation (Rooiberg Group), north of Modimolle, South Africa
… volcanic sequence of the Rooiberg Group of the Bushveld Igneous Complex and is known to host polymetallic Sn-F-REE. The aim and objective of this research is to understand whether the hydrothermal brecciation in the upper Schrikkloof Formation is associated with ore forming processes or not. The …
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Relationship between flotation operational factors and froth behaviour
… column, using a PGM bearing UG2 ore from the Bushveld Igneous Complex. Four concentrate and tailings samples were simultaneously collected and solids and water recoveries were determined. Assays of the concentrates were conducted to establish the amount of platinum, palladium and chromite that …
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An investigation into the impact of residual reagents on flotation in response to process water recirculation
… was from the Merensky reef which is found in the Bushveld Igneous Complex (BIC). The complex contains the world largest deposits of platinum group elements. About 75% of the world's platinum reserves and 50% of the world's palladium reserves are in the bushveld igneous complex, making it one of …
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The effect of flotation reagents on the coagulation and dewatering of flotation tailings
… selectivity. Utilising Merensky ore from the Bushveld Igneous Complex (BIC), this study examines how flotation reagents, including coagulants, flocculants, depressants, and collectors, affect the coagulation and dewatering of flotation tailings. The BIC has 75% of the world's platinum reserves …
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Investigation of the effect of the reagent suite in froth flotation of a Merensky ore
… minerals present in the ore. The process is made complex by many surface reactions taking place, the existence of secondary and interactive effects among the flotation reagents, as well as the surface liberation of the minerals. Owing to the stringent regulations around water usage, concentrator …
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Investigation of the effect of different frother blends on the flotation of selected PGM bearing ores
… only. Two ores from the Merensky Reef in the Bushveld Igneous Complex, South Africa, were used .The frothers were selected to cover a range of polyglycols and alcohols, and included Senfroth 516, DOW 200 and DOW 250 (all polyglycols), and 1-butanol, 1-pentanol, 1-hexanol and MIBC (all low …
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P-T estimates of peak Bushveld metamorphism in the eastern Bushveld complex, Limpopo Province, South Africa : constraints from P-T pseudosections
The Bushveld Igneous Complex (BIC) is the largest layered mafic intrusion in the world and contains the largest known deposits of vanadium, chromium and Platinum group elements on the planet, as well as large deposits of iron, nickel, copper, tin and fluorite. To aid and improve our understanding …
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On the selective flotation of pentlandite from pyrrhotite in Sheba's Ridge ores
… minerals. In the context of South Africa, the Bushveld Igneous Complex (BIC) sulphides play a very important role in that they are largely associated with the valuable platinum group elements (PGEs) and platinum group minerals (PGMs). Typically, the base metal sulphide (BMS) content in the BIC …
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Temporal assessment of volatile organic compounds at a site with high atmospheric variability in the North–West Province
… masses that passed over the western and eastern Bushveld Igneous Complex, and a region over which air masses typically followed an anti-cyclonic movement pattern (collectively referred to as Area II). Anthropogenic VOC levels in air masses that passed over the regional background (areas with no …
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Investigating the use of sodium silicate to improve the flotation performance of Platreef and UG2 PGE ores
The Bushveld Igneous Complex (BIC) in South Africa is one of the largest platinum group minerals (PGM) depositories in the world. Due to the depletion in high grade ores, there has been a shift to processing low grade, mineralogically complex, finely disseminated and often altered ores. These ores …
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Investigating electrolyte-reagent-mineral interactions in response to water quality challenges in the flotation of a PGM ore
… A Merensky ore, typical of the South African Bushveld Igneous Complex was selected as previous work within the Centre for Minerals Research was conducted on ores of similar mineralogy. Threephase bench scale flotation and froth column tests were performed to examine the effect of increasing …