A petrographic study of porphyry intrusives of Hedley, B.C.

The Flange-Midway types were found to be petrographically indistinguishable from ordinary sills. The cause of the bluish colour of Flange specimens could not be definitely established. The porphyries may have been altered both by deuteric and by hydro-thermal action. Studies of zoned plagioclases in...

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Bibliographic Details
Main Author: Lee, James William
Language:English
Published: University of British Columbia 2012
Subjects:
Online Access:http://hdl.handle.net/2429/41397

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