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Electron microprobe analyses of chlorine in hornblendes and biotites from the charnockitic rocks of Kondapalli, India

Published online by Cambridge University Press:  05 July 2018

C. Leelanandam*
Affiliation:
Department of Mineralogy and Petrology, University of Cambridge 1

Summary

Chlorine is estimated in nine hornblendes (0·13–1·12%) and nine biotites (0·19–0·62%) from the Kondapalli charnockites for the first time, using the electron microprobe. The data obtained suggest that these Kondapalli minerals are unexpectedly and unusually rich in Cl, which is well equilibrated in the five available coexisting hornblende-biotite pairs.

Type
Research Article
Copyright
Copyright © The Mineralogical Society of Great Britain and Ireland 1969

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Footnotes

1

Present address: Geology Department, Osmania University, Hyderabad-7, India.

References

Buddington, (A. F.), 1952. Chemical petrology of some metamorphosed Adirondack gabbroic, syenitic and quartz syenitic rocks. Amer. Journ. Sci., Bowen Vol., 37-84.Google Scholar
Buddington, (A. F.) and Leonard, (B. F.), 1953. Chemical petrology and mineralogy of hornblende in north-west Adirondack granitic rocks. Amer. Min. 38, 891-902.Google Scholar
Correns, (C. W.), 1956. The geochemistry of the halogens. In Physics and chemistry of the Earth, vol. I, ed. Ahrens, (L. H.), Rankama, (K.), and Runcorn, (S. K.). London (Pergamon Press), pp. 181233.Google Scholar
Deer, (W. A.), Howie, (R. A.), and Zussman, (J.), 1963. Rock-forming minerals, vol. 2. London (Longmans, Green).Google Scholar
Engel, (A. E. J.) and Engel, (C. G.), 1962. Hornblendes formed during progressive metamorphism of amphibolites, northwest Adirondack Mountains, New York. Bull. Geol. Soc. Amer. 73, 1499-1514.CrossRefGoogle Scholar
Kuroda, (P. K.) and Sandell, (E. B.), 1953. Chlorine in igneous rocks. Ibid. 64, 879-96.CrossRefGoogle Scholar
Lee, (D. C.), 1958. A chlorine-rich biotite from Lemhi County, Idaho. Amer. Min. 43, 107-II.Google Scholar
Long, (J. V. P.), 1967. Electron probe microanalysis. In Physical methods in determinative mineralogy, ed. Zussman, (J.). London (Academic Press), pp. 215-60.Google Scholar
Reed, (S. J. B.), 1964. Some aspects of X-ray microanalysis in mineralogy. Ph.D. thesis, University of Cambridge.Google Scholar