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The significance of termites on the future of kimberlite exploration in Botswana

  • Tshireletso A. Dira
  • Leon R. M. Daniels
Original Paper
  • 35 Downloads

Abstract

The majority of the diamond mines in Botswana were discovered as a direct consequence of soil sampling for indicator minerals such as garnet and picroilmenite. Over the past 60 years the application of soil sampling for indicator minerals as a primary exploration tool has declined while aeromagnetic surveys have increased in popularity. The rate of kimberlite discovery in Botswana has declined significantly. The obvious magnetic kimberlites have been discovered. The future of new kimberlite discoveries is once again dependent on soil sampling for kimberlite indicator minerals. It is essential to have an in depth understanding of the transport mechanism of kimberlite indicator minerals from the kimberlite to the modern day surface of the Kalahari Formation, which is solely via termite bioturbation. Field observations indicate that the concentration of indicator minerals at surface is directly dependent on the physical characteristics and capabilities as well as behavioural patterns of the particular termite species dominant in the exploration area. The discovery of future diamond mines in Botswana will be closely associated with an in depth understanding of the relationship between size and concentration of kimberlite indicator minerals in surface soils and the seasonal behaviour, depth penetration capabilities, earthmoving efficiencies and mandible size of the dominant termite species within the exploration area. Large areas in Botswana, where kimberlite indicator minerals recovered from soil samples have been described as distal from source or background, will require re-evaluation. Without detailed termite studies the rate of discovery will continue to decline.

Keywords

Termites Kimberlite Exploration Botswana 

Notes

Acknowledgements

The authors wish to thank Pangolin Diamonds Corp of Canada for access to exploration data and permission to publish. Manfred Marx, an anonymous reviewer and journal editor Lutz Nasdala are thanked for their constructive comments to improve this manuscript.

References

  1. Dangerfield JM, Veenendaal EM, Riddoch BJ, Black H (1992) Termites and land use in south-east Botswana: variety and abundance of termite surface features. Botswana Notes and Records 24:165–179Google Scholar
  2. Darlington JPEC (1982) The underground passage and storage pits used in foraging by a nest of the termite Macrotermes michaelseni in Kajiado Kenya. J Zool 198:237–247CrossRefGoogle Scholar
  3. Gibson JG (1998) Final report on Prospecting Licence 39/90. Debswana Mining Company (Pty) Limited, Orapa, Botswana, Four VolumesGoogle Scholar
  4. Krug MA, Campbell JAH, Nowick TE, Thurston MI, Smithson NK, van Heerden G (1995) Martins Drift Evaluation report. De Beers Prospecting, Lobatse, Two VolumesGoogle Scholar
  5. Lamont G (2011) The quest for diamonds in the Bechuanaland protectorate and Botswana. In: De Wit MCJ, Köstlin EO, Liddle RS (eds) Prospecting in Africa. De Beers Consolidated Mines Limited, pp 171–201Google Scholar
  6. Liddle RL (2006) First Relinquishment Report for PL130/2002. De Beers Prospecting Botswana (Pty) Ltd, Lobatse, BotswanaGoogle Scholar
  7. Lock N (1985) Kimberlite exploration in the Kalahari region of southern Botswana with emphasis on the Jwaneng kimberlite province. In: Raines GL et al (eds) Prospecting in areas of desert Terrain International Conference on Prospecting in Areas of Desert Terrain, Rabat, Morocco. Institute of Min Metall, London, pp 183–190Google Scholar
  8. Rogers AJ, Hough TG, Davidson JM (2013) KX36 – rediscovering the diamond exploration potential of the central Kalahari in Botswana. J South Afr Inst Min Metall 113:539–545Google Scholar
  9. Sabone S (2006) Second Relinquisgment report for PL 30/2002. De Beers Prospecting Botswana (Pty) Ltd, Lobatse, BotswanaGoogle Scholar
  10. Turner S, Marais E, Vinte M, Mudegi A, Park W (2006) Termites, water and soils. Agricola 16:40–45Google Scholar
  11. Uys V (2002) A guide to the termite genera of Southern Africa. Plant protection Research Institute Handbook No 15, Agricultural Research Council, Pretoria, 116 ppGoogle Scholar
  12. Willis, JHA (1960) Final report on the Bechuanaland investigation 1959/1960. Consolidated African Selection Trust. Report to Bechuanaland Geological Survey, 9 ppGoogle Scholar

Copyright information

© Springer-Verlag GmbH Austria, part of Springer Nature 2018

Authors and Affiliations

  1. 1.Geocontracts Botswana (Pty) LimitedTatitownBotswana

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