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

Open Access Open Access  Restricted Access Subscription Access
Open Access Open Access Open Access  Restricted Access Restricted Access Subscription Access

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
     

   Subscribe/Renew Journal


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.
Subscription Login to verify subscription
User
Notifications
Font Size

  • CHAYES, F. (1955) Potash feldspar as a by-product of the biotite-chlorite transformation. Jour. Geol., v. 63, pp. 75-82.

  • FLANAGAN, F.J. (1969) U.S. Geological Survey Standards-II. First compilation of data for the new U.S.G.S. rocks. Geochim. Cosmochim. Acta, v. 33, pp. 81-120.

  • FLANAGAN, F.J. (1973) 1972 values for International geochemical reference sample. Geochim. Cosmochim. Acta, v. 37, pp. 1189-1200.

  • PHINNEY, W.C. (1963) Phase equilibria in the metamorphic rocks of St. Paul Island and Cape North, Nova Scotia. Jour. Petrol., v. 4, pp. 90-130.

  • SCHWARTZ, G.M. (1958) Alteration of biotite under mesothermal conditions. Econ. Geol., v. 53, pp. 164-177.

  • SIMS, P.K. and VISWANATHAN, S. (1972) Giants Range Batholith. In: P.K. Sims and G.B. Morey (Eds.) Geology of Minnesota: A Centennial Volume, Minnesota Geological Survey, St. Paul, Minnesota, USA, pp. 120-139.

  • TUREKIAN, K.K. and PHINNEY, W.C. (1962) The distribution of Ni, Co, Cr, Cu, Ba and Sr between biotite-garnet pairs in a metamorphic sequence. Amer. Min., v. 47, pp. 1434-1441.

  • VISWANATHAN, S. (1972) Geochemical behaviour of Rb, Ba, Pb, Ti, Mn, and Zn during progressive chloritization of granitic biotites. Curr. Sci., v. 41, pp. 655-658.


Abstract Views: 990

PDF Views: 4




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

Abstract Views: 990  |  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