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On a new barium plagioclase felspar

Published online by Cambridge University Press:  14 March 2018

S. R. Nockolds
Affiliation:
Geology Department, Manchester University
E. G. Zies
Affiliation:
Geophysical Laboratory, Carnegie Institution, Washington, U.S.A

Extract

In the memoir dealing with the geology of the Broken Hill district, New South Wales, mention is made 1 of a remarkable rock type found in a few places in the vicinity of Broken Hill, which looks not unlike an aplite in the field. A brief description of its appearance in thin section is given. It consists mainly of what appears to be very basic plagioclase. A fair amount of quartz, some epidote and bluishgreen hornblende were noticed, whilst a notable amount of sphene is present.

Type
Research Article
Copyright
Copyright © The Mineralogical Society of Great Britain and Ireland 1933

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References

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page 452 note 1 Data taken from Winchell's Elements of optical mineralogy, 1927, pt. II, pp. 279, 292, 293.

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