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Some data on the iron-rich hypersthenes

Published online by Cambridge University Press:  14 March 2018

N. F. M. Henry
N. F. M. Henry*
Affiliation:
Department of Mineralogy and Petrology, Cambridge
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Extract

The first iron-rich hypersthene reported was from Vittinki in Finland and was described by M. Saxén in 1925. In 1932 N. Sundius showed that the so-called 'iron-anthophyllite' from Tunaberg in Sweden was really a very iron-rich hypersthene. He suggested that two other 'iron-anthophyllites' occurring similarly in the eulysites of Sweden at Bygdsiljum and at Mansjö might also prove to be really iron-rich hypersthenes.

Here chemical and optical data are given for the Mansjö mineral which fits well into the series and proves to be slightly richer in iron than the Tunaberg one. Data are also given for hypersthenes from Loch Duich and from Glen Buchat in Aberdeenshire, while, thanks to the kindness of Professor P. Eskola, it has been possible to obtain a sample of the Vittinki mineral and to complete the data of M. Saxén.

Type
Research Article
Information
Mineralogical magazine and journal of the Mineralogical Society , Volume 24 , Issue 151 , December 1935 , pp. 221 - 226
Copyright
Copyright © The Mineralogical Society of Great Britain and Ireland 1935

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References

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