Zakhele Nkosi


Applied Mineralogy and Historical Geology

Office: 4-25 Mineral Sciences Building


Phone: +27 (0)12 420 5012


Present focus:

  • Applied Geochemistry
  • Carbon Capture and Storage using mine waste
  • Geoethics and pedagogics of the Earth Sciences

Current research projects:

  • Carbon sequestration capacity for kimberlite tailings in South Africa
  • SAT4CCS Project – South African Tailings for use in Carbon Capture and Storage Project
  • Teaching high school pupils as a method of active learning for 1st year Earth History students at the University of Pretoria: A case study at the Ditsong National Museum of Natural History


  • Current:     PhD Geology Candidate, University of Johannesburg, RSA
  • 2010:         MSc Geology, University of Pretoria, RSA 
  • 2012:         BSc (Hons)Geology, University of Pretoria, RSA 
  • 2011:         BSc Geology, University of Pretoria, RSA 


  • 20018 – present: Lecturer, University of Pretoria. 
  • 2017 – 2018: Assistant lecturer, University of Pretoria.
  • 2012 – 2017: Tutor and Practical demonstrator, University of Pretoria.



  • Class guardian for Third year level Geology and students
  • Depart. Organiser:  Anti-discrimination and social justice week
  • Committee Member: Transformation
  • Committee Member: Marketing

Project supervision:

In progress M.Sc.:

  • 2020-present: Supervision of M.Sc. project for Ms Thandiwe Nhlabathi (Geology)


University of Pretoria: 

  • 2017 – present: GLY 163 Historical Geology
  • 2017 – present: GLY 255 Fundamental and Applied Geology
  • 2017: GLY 261 Igneous Petrology


Conference Publications:

  • Nkosi, Z. H., et al. (2018). Appending mineral carbonation to mine waste management and/or retreatment processes. Geo Congress. Johannesburg, South Africa, Geological Society of South Africa: 200.
  • Nkosi, Z. H., et al. (2018). Preferential precipitation of magnesite over calcite during mineral carbonation of platinum tailings: a possible consequence of the inhibition effect induced by the Mg cation activity in solution. 17th Conference of the Geological Society of Africa. Aveiro, Portugal: 174.
  • Nkosi, Z.H., et al (2017). Carbon Capture and Storage in South Africa may face extinction without direct economic and industrial beneficiation from the sequestration. Carbon Capture & Utilisation Workshop June 5 – 7, 2017 Department of Chemistry, University of the Western,Cape Town, South Africa
  • Nkosi, Z. H., et al. (2016). Experimental Investigation on the Reactivity of Mg-orthopyroxene and Ca-plagioclase under Direct Aqueous Mineral Carbonation – Eastern Bushveld Igneous Complex Case Study. 35th International Geological Congress. Cape town, South Africa: 2.


  • YES SA Chapter (2018 – 2019): Member and Chairman of the Young Earth Scientist’s Network.
  • GSSA (Current): Member of the Geological Society of South Africa
  • GK (2011 – Current): Member of the Golden Key International Honour Society 


  • 2018 John Handley Award of Geological Society of South Africa: Awarded to the best MSc thesis in geology to be produced at a South African university in the year prior the award.
  • 2018 Best Oral Presenter: 17th Conference of the Geological Society of Africa. Aveiro, Portugal
  • 2018 Academic Honorary Colours: Awarded by the student representative council for academic performance in a master of science degree.
  • 2011 Certificate of Merit for Leadership: Awarded by the student representative council for contribution to student society.


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