Journal of Geological Society of India (Online archive from Vol 1 to Vol 78)

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Geochemistry and Ore-Minerology of Ilmenite from Beach Placers of the Visakhapatnam-Bhimunipatnam Deposit, Andhra Pradesh


Affiliations
1 Department of Geology, Andhra University, Visakhapatnam - 530 003, India
2 Department of Mineral Engineering, Indian School of Mines, Dhanbad - 826 004, India
 

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Ilmenite from the beach and dune environments of the Visakhapatnam-Bhimunipatnam placer sand deposit has less TiO2 and more total iron contents, as compared to its stoichiometric composition. Its trace elemental concentrations indicate its basic percentage. It has exsolution features and four types of intergrowths, viz. ilmenite-Hematite, hematite-Ilmenite, graphic intergrowth and ilmenite-Rutile. Hematite phase in ilmenite incorporate excess iron in the structure of ilmenite. Based on the geochemical and ore mineralogical aspects, ilmenite of present study area is more suitable for pigment-Manufacturing than to synthetic rutile preparation.

Keywords

Ilmenite, Beach Placers, Mineragraphy, Geochemistry, Visakhapatnam Coast, Andhra Pradesh.
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  • Geochemistry and Ore-Minerology of Ilmenite from Beach Placers of the Visakhapatnam-Bhimunipatnam Deposit, Andhra Pradesh

Abstract Views: 225  |  PDF Views: 130

Authors

M. Jagannadha Rao
Department of Geology, Andhra University, Visakhapatnam - 530 003, India
J. Venkata Ramana
Department of Geology, Andhra University, Visakhapatnam - 530 003, India
R. Venu Gopal
Department of Mineral Engineering, Indian School of Mines, Dhanbad - 826 004, India
M. Chandra Rao
Department of Geology, Andhra University, Visakhapatnam - 530 003, India

Abstract


Ilmenite from the beach and dune environments of the Visakhapatnam-Bhimunipatnam placer sand deposit has less TiO2 and more total iron contents, as compared to its stoichiometric composition. Its trace elemental concentrations indicate its basic percentage. It has exsolution features and four types of intergrowths, viz. ilmenite-Hematite, hematite-Ilmenite, graphic intergrowth and ilmenite-Rutile. Hematite phase in ilmenite incorporate excess iron in the structure of ilmenite. Based on the geochemical and ore mineralogical aspects, ilmenite of present study area is more suitable for pigment-Manufacturing than to synthetic rutile preparation.

Keywords


Ilmenite, Beach Placers, Mineragraphy, Geochemistry, Visakhapatnam Coast, Andhra Pradesh.