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Ganophyllite from the Benallt Mine, Rhiw, Carnarvonshire

Published online by Cambridge University Press:  14 March 2018

W. Campbell Smith  and
F. A. Bannister
W. Campbell Smith
Affiliation:
British Museum
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Extract

Ganophyllite was first detected in the Benallt mine as small fibrous patches varying in colour from pale pink to brown, in the thin vein cutting ore in the Ty Canol incline from which the manganese-rich chlorite, pennantite, was described. These were identified by X-ray photographs. It had previously been found at the neighbouring Nant mine by Sir Arthur Russell in 1911.

Type
Research Article
Information
Mineralogical magazine and journal of the Mineralogical Society , Volume 28 , Issue 201 , June 1948 , pp. 343 - 352
Copyright
Copyright © The Mineralogical Society of Great Britain and Ireland 1948

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References

page 343 note 1 Smith, W. Campbell, Bannister, F. A., and Hey, M. H., Min. Mag., 1946, vol. 27, p. 218.CrossRefGoogle Scholar

page 343 note 2 Russell, A., Min. Mag., 1946, vol. 27, p. 234 Google Scholar

page 343 note 3 A specimen obtained earlier and given me by Mr. Wills had flakes up to 4 mm. across, but it is not known from which part of the mine this was obtained. The ganophyllite is associated with white calcite which fluoresces pink in ultra-violet light.(B.M. 1945,108.)

page 344 note 1 A similar absorption scheme is recorded for a mineral taken to be a mica in one of the specimens carrying banalsite from Benallt described in 1944 (Min. Mag., vol. 27, p. 40).

page 344 note 2 Hamberg, A., Geol. För. Förh. Stockholm, 1890, vol. 12, pp. 586–598.CrossRefGoogle Scholar

page 344 note 3 Larsen, E. S. and Shannon, E. V., Ganophyllite from Franklin Furnace, New Jersey. Amer. Min., 1924, vol. 9, p. 239. [M.A. 3–216.]Google Scholar

page 350 note 1 Palache, C., Amer. Journ. Sci., 1910, ser. 4, vol. 29, p. 187.Google Scholar

page 351 note 1 Larsen, E. S. and Shannon, E. V., Amer. Min., 1922, vol. 7, p. 152. [M.A. 2–472.]Google Scholar

page 351 note 2 Ibid., 1924, vol. 9, pp. 238–240. [M.A. 3–216.]