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Gold and silver in the Dartmoor granite

Published online by Cambridge University Press:  14 March 2018

A. Brammall
A. Brammall*
Affiliation:
Imperial College of Science and Technology, London
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Extract

Gold and silver have been detected not only in the peculiar facies of the granite occurring on Bittleford Down, but also in the normal grey biotite-granite of numerous tor- and quarry-localities; several hand-specimens of granite showing minute flakes of visible gold have been collected.

The modes of occurrence of gold on Dartmoor, the environment of the granite from which specimens showing visible gold have been taken, and the gold-silver content of the granite generally have been investigated in some detail, with the results described below.

Type
Research Article
Information
Mineralogical magazine and journal of the Mineralogical Society , Volume 21 , Issue 112 , March 1926 , pp. 14 - 20
Copyright
Copyright © The Mineralogical Society of Great Britain and Ireland 1926

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References

page 14 note 1 Brammall, A. and Harwood, H. F., The occurrence of a gold-bearing pegmatite on Dartmoor. Min. Mag., 1924, vol. 20, pp. 201-211 Google Scholar.

page 15 note 1 Ioc. cit.

page 19 note 1 Cited by Clarke, F. W., Data of Geochemistry, 1911, pp. 613-614 Google Scholar.

page 20 note 1 For references to literature, see Min. Mag., 1924, vol. 20, p. 210, and F. W. Clarke's Data of Geochemistry.