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Authors
Affiliations
1 Geology Department, University of Madras, Madras, IN
Source
Journal of Geological Society of India (Online archive from Vol 1 to Vol 78), Vol 18, No 2 (1977), Pagination: 92-93
Abstract
This note deals with twinned epidote found in epidote-biotite gneiss from Periya Soragai (Lat. N11°44'; Long. E77°55') west of Omalur, Salem District. The volume percent of the different minerals in the rock is: quartz-29%, plagioclase (27% to 29% An)-27%, biotite (pleochroic from pale yellow to greenish-brown)-26%, epidote (non-pleochroic)-16% and opaque oxide-2%. Few of the epidote grains are found to be twinned (Fig. 1).
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