ELectron Microprobe Analyses of Chlorine in Hornblendes and Biotites from the Charnockitic Rocks of Kondapalli, India

Electron Microprobe Analyses of Chlorine in Hornblendes and Biotites from the Charnockitic Rocks of Kondapalli, India

C. Leelanandam

Department of Mineralogy and Petrology, University of Cambridge¹

¹Present address: Geology Department, Osmania University, Hyderabad-7, India.

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.

Mineralogical Magazine; September 1969 v. 37; no. 287; p. 362-365; DOI: 10.1180/minmag.1969.037.287.08
© 1969, The Mineralogical Society
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