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

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Iron-Titanium Oxide Minerals In The Mayurbhanj Basic Intrusion, Orissa, India


Affiliations
1 Regional Research Laboratory, Bhubaneswar 751 013, India
2 Department of Geology, Utkal University, Bhubaneswar 751 004, India
     

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Electron probe data arc presented for coexisting ilmeno-magnetite and hemoilmenite for three samples along with the two published analytical results. The Mol % ulv and hem are plotted in T-fo2 diagram and compared with the results of DubJabera and Skaergaard. The oxides of the five samples equilibrated at 710°C to 1050°C with fo2 ranging between 10-9.2 to 10-17.5 atm. The lower temperature of formation indicated by three samples is probably due to external granule exsolution process and high water content of the magma which is responsible for widespread deuteric and hydrothermal alteration of the genetically associated rock types.
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  • Iron-Titanium Oxide Minerals In The Mayurbhanj Basic Intrusion, Orissa, India

Abstract Views: 163  |  PDF Views: 2

Authors

S. K. Das
Regional Research Laboratory, Bhubaneswar 751 013, India
S. Mukherji
Department of Geology, Utkal University, Bhubaneswar 751 004, India

Abstract


Electron probe data arc presented for coexisting ilmeno-magnetite and hemoilmenite for three samples along with the two published analytical results. The Mol % ulv and hem are plotted in T-fo2 diagram and compared with the results of DubJabera and Skaergaard. The oxides of the five samples equilibrated at 710°C to 1050°C with fo2 ranging between 10-9.2 to 10-17.5 atm. The lower temperature of formation indicated by three samples is probably due to external granule exsolution process and high water content of the magma which is responsible for widespread deuteric and hydrothermal alteration of the genetically associated rock types.