The Lewisian pegmatites of South Harris, Outer Hebrides
Published online by Cambridge University Press: 14 March 2018
Summary
A number of representative examples of the Lewisian acid pegmatites of South Harris are described, and the presence of the following minerals has been established: quartz, albite, microcline, biotite, muscovite, magnetite, beryl, spessartine, gahnite, eolumbite, monazite, zircon, pyrite, epidote, tourmaline, apatite, thorite, uraninite, thorogummite, uranophane, kasolite, betafite (?), and allanite. Spectrographic, optical, and X-ray powder data are given for some of these minerals, together with chemical analyses of magnetite, biotite, columbite, gahnite, and spessartine. It is believed that gahnite, nranophane, and the pyrochlore mineral (probably betafite) are recorded for the first time from Britain.
- Type
- Research Article
- Information
- Mineralogical magazine and journal of the Mineralogical Society , Volume 32 , Issue 248 , March 1960 , pp. 366 - 378
- Copyright
- Copyright © 1960, The Mineralogical Society
References
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