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Pyroxene from the Squilver dolerite, south Shropshire

Published online by Cambridge University Press:  14 March 2018

F. G. H. Blyth
F. G. H. Blyth*
Affiliation:
Geology Department, Imperial College of Science and Technology, London
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Extract

The andesine-dolerite of Squilver Hill, situated nearly 3 miles due north of Bishops Castle, has been described in another place. This somewhat coarse-textured rock, with a distinctive greenish-blue colour, contains up to 20 per cent. of a fresh monoclinic pyroxene as crystals of irregular shape, many of which are about a millimetre in length. The rest of the rock consists of saussuritized plagioclase, some interstitial chlorite and prehnite, and accessory apatite, sphene, magnetite, and ilmenite; the unaltered nature of the pyroxene is noteworthy.

Type
Research Article
Information
Mineralogical magazine and journal of the Mineralogical Society , Volume 28 , Issue 202 , September 1948 , pp. 380 - 383
Copyright
Copyright © The Mineralogical Society of Great Britain and Ireland 1948

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References

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