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On the occurrence of petalite and pneumatolytic apatite in the Meldon aplite, Okehampton, Devonshire1

Published online by Cambridge University Press:  14 March 2018

W. F. P. McLintock
W. F. P. McLintock*
Affiliation:
Museum of Practical Geology, London
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Extract

The Meldon aplite is a small intrusion lying to the north-west of the Dartmoor granite about two miles south-west of Okehampton. Its microscopic characters were investigated by Sir Jethro Teall, whilst the geology of the district, with petrological accounts of the aplite and its associated rocks, has been fully dealt with by R. H. Worth, who notes the presence of felspar, quartz, mica, tourmaline, topaz, apafite, fluor-spar, montmorillonite, and axlnite.

Type
Research Article
Information
Mineralogical magazine and journal of the Mineralogical Society , Volume 20 , Issue 103 , December 1923 , pp. 140 - 150
Copyright
Copyright © The Mineralogical Society of Great Britain and Ireland 1923

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Footnotes

1

Communicated by permission of the Director, II.M Geological Survey.

References

Page 140 note 1 Worth, R. H., Quart. Journ. Geol. Soc., 1920, vol. 75 (for 1919), pp. 77 118.CrossRefGoogle Scholar

Page 142 note 1 Lacroix, A., Minéralogie de Madagasear, 1922, vol. 2, pp. 304–362.Google Scholar

Page 143 note 1 A. Lacroix, loc. cit., p. 815.

Page 143 note 2 H. J., Lowe, Rep. and Trans. Devonshire Assoc., 1901, vol. 33, p. 112 Google Scholar.

Page 144 note 1 Larsen, Cf. E. S., The microscopic determination of the nonopaquo minerals. Bull. U.S. Geol. Suvvey, 1921. no. 679, p. ll3 Google Scholar.

Page 144 note 2 Brush, G. J. and Dana, E. S., Amer. Journ. Sci., 1880, ser. 3, vol. 20, p. 283 Google Scholar.

Page 144 note 3 G. F. Kunz, ibid., 1881, ser. 3, vol. 27, p. 214.

Page 145 note 1 R. H. Worth, loc. cit., p. 106.

Page 145 note 2 Mem. Geol. Survey, The Geology of the Country around Bodmin and St. Austell (Sheet 847), 1909, p. 68.

Page 146 note 1 Lacroix, Cf. A., Minéralogie de Madagascar, 1922, vol. 1, p. 352 Google Scholar.

Page 146 note 2 Mem. Geol. Survey, Geology of the Land's End district (Sheets 351 and 358), 1907, pp. 53-60.

Page 147 note 1 Rudler, F. W., A Handbook to a Collection of Minerals of the British Islands, 1905, p. 24 Google Scholar.

Page 147 note 2 Geology of the Land's End district, 1907, pp. 59-60.

Page 147 note 3 Ibid., p. 55.

Page 147 note 4 Busz, K., Rep. British Assoc. Adv. Sci., 1905, for 1904, p. 568 Google Scholar.

Page 147 note 5 R. H. Worth, loc. cit, p. 86.

Page 148 note 1 Cf. Mem. Geol. Survey, The Geology of the country aromld Bodmin and St. Austell (Sheet 347), 1909, pp. 98-99.