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Conjugate cummingtonite and hornblende at Sgeir nan Sgarbh, South Harris, Outer Hebrides

Published online by Cambridge University Press:  05 July 2018

A. Livingstone ,
M. T. Frost  and
P. Suddaby
A. Livingstone
Affiliation:
Department of Geology, Royal Scottish Museum, Edinburgh
M. T. Frost
Affiliation:
Department of Geology, Imperial College of Science and Technology, London, SW7
P. Suddaby
Affiliation:
Department of Geology, Imperial College of Science and Technology, London, SW7
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Summary

Chemical analyses, cell parameters, and optical data are presented for conjugate cummingtonite and hornblende, which occur in a paragneiss. A metasomatic origin for the development of hornblende from cummingtonite, during retrogressive metamorphism, is proposed.

Type
Research Article
Information
Mineralogical Magazine , Volume 39 , Issue 304 , December 1973 , pp. 464 - 466
Copyright
Copyright © The Mineralogical Society of Great Britain and Ireland 1973

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References

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