10th Annual Inkaba yeAfrica and !Khure Africa Conference (2014)

Session

Minerals

2 Oct 2014, 09:45

Conference Room, Matjiesfontein Station (Matjiesfontein's Lord Milner Hotel)

Conveners

Minerals: Session Chair: Dr. Marco Andreoli

• Marco Andreoli (Necsa; University of hte Witwatersrand)

Minerals

• Marco Andreoli (Necsa; University of hte Witwatersrand)

Contribution list Timetable

27. The use of chemostratigraphy and geochemical vectoring as an exploration tool for platinum group metals in the Platreef, Bushveld Igneous Complex, South Africa: A case study on the Sandsloot and Overysel farms

Mr Tshipeng Mwenze (University of the Western Cape)

02/10/2014, 09:45

Oral and Poster Presentation

The paucity of geochemical criteria for stratigraphic correlations and defining the styles of mineralisation pose serious problems in locating PGE-rich zones in the Platreef. This study is therefore aimed at identifying and appraising process-based mineralogical/ geochemical criteria which may be useful in stratigraphic correlations and characterizing the nature and styles of PGE...

45. Geochemical characterization of P1, P2, P3 and P4 units at the Akanani prospect area, Bushveld Complex, South Africa: Combination of R-Cluster, R-Factor and Discriminant analysis approach

Mr Hakundwi Mandende (University of the Western Cape)

02/10/2014, 10:00

Oral and Poster Presentation

The Platreef is located in the northern limb of the Bushveld Igneous Complex (BIC) and is comprised of a 10- to 400-m thick package of pyroxenitic lithologies, which host platinum-group element (PGE) and base metal sulphide (BMS) mineralization at various heights above the floor rocks. The pyroxenites are overlain by norites and gabbronorites, generally assigned to the Main Zone of the BIC....

37. Petrological investigation of Merensky Reef Unit lithologies at Two Rivers Platinum Mine and comparison to stratigraphically similar rocks north of the Steelpoort fault, eastern Bushveld Complex, South Africa

Ms Jarlen Beukes (University of the Free State)

02/10/2014, 10:15

Oral and Poster Presentation

This research study focuses on the enigmatic occurrence of noritic lenses (termed “brown sugar norite” by mine geologists, here after referred to as BSN), within the feldspathic pyroxenite of the Merensky Reef (MR) at Two Rivers Platinum Mine which is situated on the southern sector of the eastern limb of the Bushveld Complex. The cumulate rocks associated with the MR unit are characterised by...

46. Lithogeochemical characterization of the Hondekloof Ni deposit, Kliprand area, Garies terrane, Namaqualand, South Africa

Mr Reddy Bokana (University of the Western Cape (Applied Geology))

02/10/2014, 11:00

Oral and Poster Presentation

The Hondekloof deposit represents a family of small, orthomagmatic massive sulphide Ni-Cu-(Co-Zn) deposits occurring in the central part of the Garies terrane, Bushmanland, Namaqualand, South Africa. The study area is located in the Westcoast region of South Africa, in the settlement called Kliprand where various granulite facies rocks of the Namaqua-Natal Metamorphic province ranging from...

3. Gypsum Deposits Associated with the Whitehill Formation (Ecca Group) in the Steytlerville-Jansenville Area, Southern Karoo, South Africa

Mr Roberto Almanza (Nelson Mandela Metropolitan Univeristy)

02/10/2014, 11:15

Oral and Poster Presentation

The Steyterville-Jansenville gypsum field is one of South Africa’s smaller deposits. It is covered by an average of 500mm of soil and has fine powdery gypsum bodies which are, on average, 37cm thick and contain an average of 65% gypsum – medium grade. The calcium and sulphate ions required to form the gypsum mineral (CaSO4•2H2O) are supplied by the Whitehill Formation shale which is carbonate...

20. Catechol oxidase activity of Bis(pyridinonato)copper(II) complexes

Mr Pule Petrus Molokoane (University of the Free State)

02/10/2014, 11:30

Oral and Poster Presentation

Pseudo first order oxidation of 3,5-di-tert-butylcatechol under aerobic conditions to 3,5-di-tert-butylquinone. The process was catalyzed by square planar Cu(II)(naltol)2 complexes. The aim of this study was to imitate the activity and behaviour of the enzyme catechol oxidase by employing copper nano molecular materials, and to investigate electronic and steric effects on this catalytic...

14. Drying effects on mineral surface catalyzed atrazine degradation

Mr Adrian Adams (University of Stellenbosch)

02/10/2014, 11:45

Oral and Poster Presentation

Atrazine, a popular herbicide, endocrine disruptor and possible carcinogen, is frequently detected in water systems. Its biodegradation in soils is well documented, but its degradation on soil mineral surfaces is only partially understood. Furthermore, changing global climate and increased temperatures could possibly increase occurrences of extreme drying (evaporation) in soils, a process...

6. Distribution Patterns of Contaminants in the Mogale Gold Tailing Dam; Case Study from South Africa

Mr Oluseyi Abegunde (University of the Western Cape)

02/10/2014, 12:00

Oral and Poster Presentation

This study evaluated the magnitude of possibly leachable metals and predicted the AMD discharge over time, from Mogale tailings dam into the environs in Randfontein area, Witwatersrand Basin, South Africa. Drill core samples were analysed for multi-elements and evaluated using multivariate statistical and geochemical mass balance techniques. The tailings dam lithology was grouped into four...