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The paragenesis of Cookeite and hydromuscovite associated with gold at Ogofau, Carmarthenshire

Published online by Cambridge University Press:  14 March 2018

A. Brammall ,
J. G. C. Leech  and
F. A. Bannister
A. Brammall
Affiliation:
Geological Department, Imperial College of Science and Technology, London
J. G. C. Leech
Affiliation:
Geological Department, Imperial College of Science and Technology, London
F. A. Bannister
Affiliation:
Mineral Department of the British Museum of Natural History
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Extract

This paper describes occurrences of cookeite (not previously recorded as a British species) and hydromuacovite, associated with auriferous pyrite and arsenopyrite, blende, galena, carbonates, and free gold at Ogofau, on the left bank of the river Cothi, half a mile ESE. of Pumpsaint, Carmarthenshire.

The hillside around Ogofau is scarred with opencast workings and trenches reputed to be an 'ancient gold mine' dating back to Roman times. Though the mine is described as 'disused' on the Ordnance Survey map (six-inchcs/mile, Sheet XVII, NW.), these surface workings have been exploited for free gold intermittently within the last fifty years, and recent development work (by the Roman Deep Holdings,Ltd.) from a shaft sunk in 1910 is approaching the producing stage.

Type
Research Article
Information
Mineralogical magazine and journal of the Mineralogical Society , Volume 24 , Issue 157 , June 1937 , pp. 507 - 520
Copyright
Copyright © The Mineralogical Society of Great Britain and Ireland 1937

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References

Page 510 note 1 Several specimens, including a portion of the material used for chemical analysis, have been presented to the Trustees of the British Museum.

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