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Corundum in Biotite-Sillimanite Gneiss From near Polgahawela, Ceylon

Published online by Cambridge University Press:  01 May 2009

P. G. Cooray  and
P. S. Kumarapeli
P. G. Cooray
Affiliation:
Department of Mineralogy, Geological Survey of Ceylon, Colombo, Ceylon. Department of Geology, Imperial College of Science and Technology, London. (P. G. C.)
P. S. Kumarapeli
Affiliation:
Department of Mineralogy, Geological Survey of Ceylon, Colombo, Ceylon. Department of Geology, Ceylon Technical College, Colombo. (P. S. K.)
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Abstract

Idiomorphic, pale blue corundum crystals (S.G. =4·02, n0=1·770 ± 0·002) up to one inch long occur as porphyroblasts in a finegrained biotite-sillimanite gneiss cut by pegmatite veins at Gangoda, 5½ miles south of Polgahawela. The field relations and petrography of the corundum-bearing rocks are described briefly. The corundum is thought to have crystallized by metamorphic differentiation in alumina-rich silica-poor bands in a semipelitic gneiss.

Type
Articles
Information
Geological Magazine , Volume 97 , Issue 6 , December 1960 , pp. 480 - 487
Copyright
Copyright © Cambridge University Press 1960

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References

REFERENCES

Coates, J. S., 1935. The Geology of Ceylon. Cey. Journ. Sci., xix, pt. 2, 101–191.Google Scholar
Coomaraswamy, A. K. 1903. Occurrence of corundum in situ near Kandy, Ceylon. Geol. Mag., lix, 348–350.CrossRefGoogle Scholar
Coomaraswamy, A. K, 1904. Administration Report, Mineralogical Survey, Ceylon.Google Scholar
Fyfe, W. S., Turner, W. J. and Verhoogen, J., 1958. Metamorphic reactions and metamorphic facies. Mem. Geol. Soc. Amer., lxxiii.Google Scholar
Holland, T. H., 1900. The charnockite series, a group of Archaean hypers-thenic rocks in peninsular India. Mem. Geol. Surv. India, xxviii, pt. 2, 119–249.Google Scholar
Rothstein, A. T. V., 1957. The Dawross Peridotite. Quart. Journ. Geol. Soc., cxiii, 1–25.CrossRefGoogle Scholar
Wells, A. J., 1956. Corundum from Ceylon. Geol. Mag., xcii, 25–31.CrossRefGoogle Scholar