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Notes on the occurrence of Bertrandite at some new localities in Cornwall

Published online by Cambridge University Press:  14 March 2018

Arther Russell
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Extract

In 1904 Professor Bowman described the occurrence of bertrandite at the Cheesewring Quarry, Linkinhorne, Cornwall; the mineral having been then recently discovered there by Mr. F. H. Butler. The following notes contain an account of the character and mode of occurrence of the same mineral at four additional localities in Cornwall.

Type
Research Article
Information
Mineralogical magazine and journal of the Mineralogical Society , Volume 17 , Issue 78 , December 1913 , pp. 15 - 21
Copyright
Copyright © The Mineralogical Society of Great Britain and Ireland 1913

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References

page 15 note 1 Bowman, H. L., ‘On the occurrence of Bertrandite at the Cheesewring Quarry, near Liskeard, Cornwall,’ Mineralogical Magazine, 1911, vol. xvi, pp. 47–50 CrossRefGoogle Scholar.

page 15 note 2 Brief mention of the occurrence of bertrandite at the localities described in this paper has already been made by Mr. Collins, J. H. in his ‘List of Minerals found in Cornwall and Devon, with notes supplementary to the author's "handbook",’ Journ. Roy. Inst. Cornwall, 1911, vol. xviii, pp. 425–461 Google Scholar (bertrandite on p. 431)

page 15 note 3 This quarry has recently for trade purposes been given the name ‘Silver Grey’ : it is still, however, locally known by the old name of ‘Gold-diggings’. The owner, J. Sweet, Esq., of Liskeard, has been most kind in affording me permission to examine it thoroughly on many occasions.

page 16 note 1 The orientation and lettering are throughout as in Dana's ‘System of Mineralogy,’ sixth edition, 1892.

page 17 note 1 This and two other adit-levels, one above, and one below, although situatec~ on the north side of Kit Hill were during the recent working designated East Kit Hill Mine ; the company making use of an engine which was standing on the old East Kit Hill Mine for the purpose of driving their dressing plant. The workings were abandoned in 1909. They are included in the group of mines on Kit Hill known as Kit Hill Great Consols Mine.

page 19 note 1 Very similar twin-crystals of bertrandite from Pisek, Bohemia, have been described by Vrba, C., Zeits. Kryst. Min., 1894, vol. xxiv, p. 112 Google Scholar.

page 20 note 1 Henty, G. M., ‘On the Occurrence of Wood Tin at the Great Wheal Vor Mines,’ Rep. Miners' Assoc. Cornwall and Devon, 1867, p. 55 Google Scholar.

page 20 note 2 Argall, W. H., ‘On the Occurrence of Wood-tin in the Wheal Metal Lode at Wheal Vor,’ Journ. Roy. Inst. Cornwall, 1873, vol. iv, p. 255 Google Scholar.

page 21 note 1 This quarry is situated a few yards to the west of the houses shown on the maps as Mean Pern (Sheet LXXI SW, Six-Inch Ordnance Map). The spelling 'Mean Quarry' is that given on the Ordnance Maps; in the Home Office List of Quarries, however, it is spelt ‘Maen’.