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The mica of certain coal-measure shales in South Wales1

Published online by Cambridge University Press:  14 March 2018

G. Nagelschmidt  and
D. Hicks
G. Nagelschmidt
Affiliation:
Chemistry Department, Rothamsted Experimental Station, Harpenden
D. Hicks
Affiliation:
Coal Survey Laboratory, Cardiff
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Extract

During a study of the sources of the dusts in South Wales coal mines, carried out on behalf of the Industrial Pulmonary Disease Committee of the Medical Research Council, a mineral of the mica group was found as the main constituent of the shales overlying the coal in several mines. Of six shales investigated four were associated with anthracite, one with semi-bituminous, and one with bituminous coal. Between the coal seam itself and the shale which forms its roof there usually occurs a more coaly shale referred to locally as ‘clod’. Five of the samples investigated were isolated from ‘clods’ and one from a roof.

Type
Research Article
Information
Mineralogical magazine and journal of the Mineralogical Society , Volume 26 , Issue 180 , March 1943 , pp. 297 - 303
Copyright
Copyright © The Mineralogical Society of Great Britain and Ireland 1943

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Footnotes

1

Published by permission of the Director of Fuel Research.

References

page 297 note 2 Hicks, D. and Nagelschmidt, G., Spec. Rep. Ser. Medical Research Council, Londan, 1943, no. 244 F.Google Scholar

page 298 note 1 Brammall, A. and Leech, J. G. C., ibid., no. 244 E.Google Scholar

page 298 note 2 Grim, R. E., Bray, R. H., and Bradley, W. F., The mica in argillaceous sediments. Amer. Min., 1937, vol. 22, pp. 813–829. [M.A. 7–12.]Google Scholar

page 298 note 3 Maegdefrau, E. and Hofmann, U., Glimmerartige Mineralien als Tonsubstanzen. Zeits. Krist., 1937, vol. 98, pp. 31–59.Google Scholar

page 299 note 1 Shaw, A., Analyst, 1934, vol. 59, p. 446.CrossRefGoogle Scholar

page 300 note 1 Brammall, A., Leech, J. G. C., and Bannister, F. A., Min. Mag., 1937, vol. 24, p. 516.CrossRefGoogle Scholar

page 301 note 1 Water lost below 105°C. is neglected in making these calculations.

page 302 note 1 Hendricks, S. B. and Ross, C. S., Amer. Min., 1941, vol. 26, p. 683. [M.A. 8–275.]Google Scholar

page 302 note 2 Correns, C. W. and von Engelhardt, W., Chem. Erde, 1938, vol. 12, pp. 1–22. [M.A. 7–405.]Google Scholar

page 302 note 3 Wood, L. K. and De Turk, E. E., Proc. Soil Sci. Soc. Amer., 1940. vol. 5, p. 152.CrossRefGoogle Scholar

page 303 note 1 Dietz, R. S., Amer. Min., 1942, vol. 27, p. 219.Google Scholar

page 303 note 2 Taylor, E. McK., Fuel, London, 1928, vol. 7, p. 230; Nature, London, 1927, vol. 120, p. 448; 1928, vol. 121, p. 789.Google Scholar