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Alteration of Ilmenite in the Manavalakurichi Deposit, India

Published online by Cambridge University Press:  28 February 2024

D. S. Suresh Babu ,
K. A. Thomas ,
P. N. Mohan Das  and
A. D. Damodaran
D. S. Suresh Babu
Affiliation:
Beach Sand Mineral Research Unit, Regional Research Laboratory (CSIR), Trivandrum 695 019, India
K. A. Thomas
Affiliation:
Beach Sand Mineral Research Unit, Regional Research Laboratory (CSIR), Trivandrum 695 019, India
P. N. Mohan Das
Affiliation:
Beach Sand Mineral Research Unit, Regional Research Laboratory (CSIR), Trivandrum 695 019, India
A. D. Damodaran
Affiliation:
Beach Sand Mineral Research Unit, Regional Research Laboratory (CSIR), Trivandrum 695 019, India
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Abstract

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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.

Keywords

AlterationIlmenitePseudorutileUnit cell volume
Type
Research Article
Information
Clays and Clay Minerals , Volume 42 , Issue 5 , October 1994 , pp. 567 - 571
Copyright
Copyright © 1994, Clay Minerals Society

References

Anand, R. R., and Gilkes, R. J.. 1984 . Weathering of ilmenite in a lateritic pallid zone. Clays & Clay Miner. 32: 363–374.CrossRefGoogle Scholar
Das, D., Sudarsan, M., Ghose, V., Krishna, J. B. M., Chintalapudi, S. N., Suresh Babu, D. S., Damodaran, A. D., and Majumdar, C. K.. 1993 . Mössbauer spectroscopic investigation of Indian ilmenites. Proc. DAE Solid State Physics Symposium. Bombay, Vol. 36C, 498.Google Scholar
Flinter, B. H., 1959. The alteration of Malayan ilmenite grains and the question of arizonite. Econ. Geol. 54: 720–729.CrossRefGoogle Scholar
Frost, M. T., Grey, I. E., Harrowfield, I. R., and Mason, K.. 1983 . The dependence of alumina and silica contents on the extent of the alteration of weathered ilmenites from Western Australia. Mineral. Mag. 47: 201–208.CrossRefGoogle Scholar
Grey, I. E., and Reid, A. F.. 1975 . The structure of pseudorutile and its role in the alteration of ilmenite. Amer. Mineral. 60: 898–906.Google Scholar
Hugo, V. E., and Cornell, D. H.. 1991 . Altered ilmenites in Holocene dunes from Zululand, South Africa. Petrographic evidence for multistage alteration. S. Afr. J. Geol. 94(5/6): 365–378.Google Scholar
Morad, S., and Aldahan, A. A.. 1982 . Authigenesis of titanium minerals in two proterozoic sedimentary rocks from southern and central Sweden. J. Sediment. Petrol. 52(4): 1295–1305.Google Scholar
Overholt, J. L., Vaux, G., and Rodda, J. L.. 1950 . The nature of “Arizonite”. Amer. Mineral. 35: 117–119.Google Scholar
Subrahmanyam, N. P., Rao, N. K., Narasimhan, D., Rao, G. V. U., Jaggi, N. K., and Rao, K. R. P. M.. 1982 . Alteration of beach sand ilmenite from Manavalakurichi: Tamil Nadu, India. J. Geol. Soc. India 23: 168–174.Google Scholar
Suresh Babu, D. S., Mohan Das, P. N., and Damodaran, A. D.. Ilmenites and ilmenites: A varietal study from the south west coast of India. Proc. VII Intl. Symp. on Waterrock Interaction, USA. Kharaka, Y. K., and Maest, A. S., 1992 eds. 537–540.Google Scholar
Temple, A. K., 1966. Alteration of ilmenite. Econ. Geol. 61: 695–714.CrossRefGoogle Scholar
Teufer, G., and Temple, A. K.. 1966 . Pseudorutile, a new mineral intermediate between ilmenite and rutile in the natural alteration of ilmenite. Nature (London) 211: 179–181.CrossRefGoogle Scholar
Vogel, A. I., 1961. A Text Book of Quantitative Inorganic Analyses. London: Longmans, 856 pp.Google Scholar
Wort, M. J., and Jones, M. P.. 1980 . X-ray diffraction and magnetic studies of altered ilmenite and pseudorutile. Mineral. Mag. 43: 659–663.CrossRefGoogle Scholar
Waychunas, G. A., 1991. Crystal chemistry of oxides and oxihydroxides. Rev. Mineral. 25: 11–61.Google Scholar