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Mineralogy and Textures of some cordierite–sillimanite rocks from Labrador, Canada

Published online by Cambridge University Press:  01 May 2009

S. K. Singh  and
D. C. Kamineni
S. K. Singh
Affiliation:
Department of Geology, University of Ottawa, Ottawa 2, Canada
D. C. Kamineni
Affiliation:
Department of Geology, University of Ottawa, Ottawa 2, Canada
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Summary

The cordierite–sillimanite rocks first reported from Joan Lake Area, Labrador, show some unusual mineral associations and textures. Two myremkitic intergrowths, one among cordierite, potash feldspar and quartz, and the other between potash feldspar and plagioclase feldspar, are observed. The presence of microcline–microperthite and the textures described in the sequel indicate that these rocks were recrystallized at high temperature.

Type
Articles
Information
Geological Magazine , Volume 108 , Issue 5 , September 1971 , pp. 439 - 444
Copyright
Copyright © Cambridge University Press 1971

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References

Binns, R. A. 1966. Granitic intrusions and regional metamorphic rocks of Permian age from the Wongwibinda district, N.S.W. J. R. Soc. N.S.W. 99, 5–35.Google Scholar
Chinner, G. A. 1961. The origin of sillimanite in Glen Clora, Angus. J. Petrology 2, 312–23.CrossRefGoogle Scholar
Sederholm, J. J. 1916. On synantectic minerals and related phenomena. Bull. Comm. géol. Finl. 48.Google Scholar
Singh, S. 1966. Cordierite in the Precambrian rocks of the S. Savanna, British Guiana, Geol. Mag. 103, 36–43.CrossRefGoogle Scholar
Spry, A. 1969. Metamorphic Textures, Pergamon Press, p. 103.Google Scholar
Venkatesh, V. 1954. Twinning in cordierite, Am. Miner. 39, 636–46.Google Scholar