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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

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