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Clays and Clay Minerals

, Volume 42, Issue 5, pp 567–571 | Cite as

Alteration of Ilmenite in the Manavalakurichi Deposit, India

  • D. S. Suresh Babu
  • K. A. Thomas
  • P. N. Mohan Das
  • A. D. Damodaran
Article

Abstract

Magnetic fractionation, chemical, and structural analyses prove that alteration of ilmenite from Manavalakurichi deposit extends only up to the formation of pseudorutile with traces of rutile. The data indicate that ferrous to ferric iron transformation, ferric iron oxide formation, and iron removal contribute to the alteration sequence. The first two highly magnetic fractions are not unaltered ilmenite. A reduction in ilmenite unit cell volume indicates the ferrous-ferric conversion occurred during alteration.

Key Words

Alteration Ilmenite Pseudorutile Unit cell volume 

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Copyright information

© The Clay Minerals Society 1994

Authors and Affiliations

  • D. S. Suresh Babu
    • 1
  • K. A. Thomas
    • 1
  • P. N. Mohan Das
    • 1
  • A. D. Damodaran
    • 1
  1. 1.Beach Sand Mineral Research UnitRegional Research Laboratory (CSIR)TrivandrumIndia

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