Table of Contents
Journal of Geochemistry
Volume 2014 (2014), Article ID 192639, 8 pages
http://dx.doi.org/10.1155/2014/192639
Research Article

Electron Microscopic Studies of Ilmenite from the Chhatrapur Coast, Odisha, India, and Their Implications in Processing

1Mineral Processing Department, CSIR-Institute of Minerals and Materials Technology, Bhubaneswar, Odisha 751 013, India
2Department of Geology and Geophysics, Indian Institute of Technology, Kharagpur 721 302, India

Received 2 April 2014; Revised 20 June 2014; Accepted 25 June 2014; Published 15 July 2014

Academic Editor: Franco Tassi

Copyright © 2014 D. S. Rao and D. Sengupta. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

Ilmenite from the Chhatrapur coast, Odisha, India, was studied using optical microscope, X-ray diffraction, particle size analysis, and electron microprobe to decipher their micromorphology, texture(s), and elemental composition. The micromorphological features by electron microscope indicate that weathering processes such as mechanical and chemical, affected the placer heavy mineral ilmenite. These detrital ilmenites contain TiO2 in the range of 50.25% to 55.41% and FeO 42.72% to 49.99% in addition to Al2O3, MgO, MnO, CaO, Na2O, Cr2O3, NiO, ZnO, ZrO2, V2O5, and HfO2 (0 to 0.034%). Ti/(Ti + Fe) ratio in the ilmenite varied from 0.413 to 0.5, which indicates the effect of weathering/oxidation confirming microscopic observations. All the results revealed that these ilmenite grains were derived from the gneissic/granitic, basic and high grade metamorphic rocks, belonging to the Eastern Ghats Group of the Precambrian complex of coastal Orissa.