Clay Minerals in the Basalts of the South Pennines

S. G. Walters and P. R. Ineson
BHP Exploration, Adelaide, Australia
Department of Geology, University of Sheffield, Sheffield, S1 3JD

Abstract: X-ray diffraction, electron microprobe and STEM EDAX analyses of basalts from the South Pennines (Derbyshire) indicate that Fe-rich smectites are the dominant alteration products, occurring either as pseudomorphs or infilling veins and vesicles. Previously chlorite has been identified as the common alteration product but its occurrence is very infrequent.

Mineralogical Magazine; March 1983 v. 47; no. 342; p. 21-26; DOI: 10.1180/minmag.1983.047.342.03
© 1983, The Mineralogical Society
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