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

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Geochemical Behaviour of Vanadium, Chromium, Cobalt, Nickel, and Copper during Progressive Chloritization of Biotites in Granites


Affiliations
1 Atomic Minerals Directorate for Exploration and Research, Department of Atomic Energy, Government of India, 1-10-153-156, Begumpet, Hyderabad – 500 016, India
2 Department of Geology, Bangalore University, Bangalore, India
     

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Evaluation of the vanadium, chromium, cobalt, nickel, and copper contents of five biotites, chloritized to varying degrees, from a magmatic granitic series of the 2700-million-year-old Giants Range Batholith of Northeastern Minnesota, USA, on the southern margin of the Canadian Shield, determined by wavelength-dispersive x-ray fluorescence spectrometry, shows that, during progressive chloritization of biotites in granites, the content of vanadium decreases and the contents of chromium, cobalt, nickel, and copper increase. The results emphasise the need for great caution when interpreting whole-rock trace-element data in petrological research.

Keywords

Granitic Biotites, Chloritization, Vanadium, Chromium, Cobalt, Nickel, Copper, Geochemical Behaviour, Giants Range Batholith, Minnesota, USA.
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  • Geochemical Behaviour of Vanadium, Chromium, Cobalt, Nickel, and Copper during Progressive Chloritization of Biotites in Granites

Abstract Views: 932  |  PDF Views: 4

Authors

S. Viswanathan
Atomic Minerals Directorate for Exploration and Research, Department of Atomic Energy, Government of India, 1-10-153-156, Begumpet, Hyderabad – 500 016, India
Yamuna Singh
Atomic Minerals Directorate for Exploration and Research, Department of Atomic Energy, Government of India, 1-10-153-156, Begumpet, Hyderabad – 500 016, India
B. Mahabaleswar
Department of Geology, Bangalore University, Bangalore, India

Abstract


Evaluation of the vanadium, chromium, cobalt, nickel, and copper contents of five biotites, chloritized to varying degrees, from a magmatic granitic series of the 2700-million-year-old Giants Range Batholith of Northeastern Minnesota, USA, on the southern margin of the Canadian Shield, determined by wavelength-dispersive x-ray fluorescence spectrometry, shows that, during progressive chloritization of biotites in granites, the content of vanadium decreases and the contents of chromium, cobalt, nickel, and copper increase. The results emphasise the need for great caution when interpreting whole-rock trace-element data in petrological research.

Keywords


Granitic Biotites, Chloritization, Vanadium, Chromium, Cobalt, Nickel, Copper, Geochemical Behaviour, Giants Range Batholith, Minnesota, USA.

References