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Mineralogy and Petrology

, Volume 112, Supplement 2, pp 383–396 | Cite as

Kimberlites distribution in Angola and prospective areas for new discoveries

  • Victor N. UstinovEmail author
  • Ana M. Feijo Bartolomeu
  • Alexander K. Zagainy
  • Joao T. Felix
  • Igor I. Mikoev
  • Yury B. Stegnitskiy
  • Ludmila P. Lobkova
  • Irina M. Kukui
  • Evelina V. Nikolaeva
  • Sergei A. Antonov
Original Paper
  • 242 Downloads

Abstract

Based on a comprehensive analysis of kimberlite pipes of Angola, including the near surface structural setting, deep lithospheric structure, pipe morphology and emplacement, mineralogical and petrographic features, diamond characteristics and locations of secondary deposits four geographical regions have been outlined within Angola representing four types of diamond bearing potential. These areas include high diamond bearing potential pipes, possible potential, no potential, and unclear potential areas. It was found that the depth of magmatism and diamond potential of kimberlites increases from the Atlantic coast in southwestern Angola into the continent in the north-easterly direction. Areas prospective for the discovery of new primary diamond deposits have been identified.

Keywords

Kimberlite pipe Ilmenite Pyrope Diamond Deposit Structure 

Notes

Acknowledgements

We received valuable geological data and help in organization of our field works in Angola from ENDIAMA, CATOCA and ALROSA companies as well as from the Ministry of Geology and Mines, Geological Institute of Angola and from the following professional colleagues: Jose M. Ganga Junior, Carlos A. Sumbula, Miguel P. Augusto de Almeida, Mankenda Amroise, Antonio C. Galiano Celestino and Vladimir A.Pervov. We are grateful to Natalia V. Antonova and Irina S. Galushkina for their assistance during the preparation of the manuscript. It is a pleasure to thank Ron Uken and an anonymous expert for their constructive comments that helped to improve the paper, and guest editor Casey M. Hetman for his valuable advices and for providing editorial assistance. The authors are very thankful to all specialists for discussions during the study of geology and diamond potential of Angola.

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Copyright information

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

Authors and Affiliations

  • Victor N. Ustinov
    • 1
  • Ana M. Feijo Bartolomeu
    • 2
  • Alexander K. Zagainy
    • 1
  • Joao T. Felix
    • 3
  • Igor I. Mikoev
    • 1
  • Yury B. Stegnitskiy
    • 4
  • Ludmila P. Lobkova
    • 1
  • Irina M. Kukui
    • 4
  • Evelina V. Nikolaeva
    • 1
  • Sergei A. Antonov
    • 1
  1. 1.Diamond DepartmentCentral Research and Exploration Institute (TsNIGRI)Saint-PetersburgRussia
  2. 2.Empresa Nacional de Diamantes de Angola (ENDIAMA) E.PLuandaAngola
  3. 3.Sociedade Mineira de Catoca Lda. (CATOCA)LuandaAngola
  4. 4.ALROSA PJSCSaint-PetersburgRussia

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