Geology of Ore Deposits

, Volume 53, Issue 6, pp 474–477 | Cite as

Placer diamond potential of the siberian craton: possible sources and ages

  • V. P. Afanasiev
  • N. P. Pokhilenko
  • S. S. Lobanov
Article

Abstract

Many diamond placers in the Siberian craton are heterogeneous consisting of several components that differ in origin and ages of the source. The diamonds are either kimberlite-hosted or are exotic varieties which occur mostly in the northeastern craton periphery and come from primary deposits of unknown types and ages. The two groups of diamond placers in the area represent two evolution trends: those found in Middle Paleozoic kimberlites originated in the Famennian and the exotic diamond groups became involved in sedimentation in the Carnian. The trends have been associated with successive weathering of older diamond hosts and redeposition of the minerals into younger sediments. Having joined since the Late Triassic, the two trends eventually produced a polygenetic and multistage mixture of diamond groups in placers.

Keywords

Siberian Craton Indicator Mineral Primary Deposit Kimberlitic Diamond Anabar Shield 

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Copyright information

© Pleiades Publishing, Ltd. 2011

Authors and Affiliations

  • V. P. Afanasiev
    • 1
  • N. P. Pokhilenko
    • 1
  • S. S. Lobanov
    • 1
  1. 1.Sobolev Institute of Geology and MineralogySiberian Branch of the Russian Academy of SciencesNovosibirskRussia

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