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On the frequent occurrence of Ankerite in coal

Published online by Cambridge University Press:  14 March 2018

T. Crook
T. Crook*
Affiliation:
Scientific and Technical Department, Imperial Institute
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Extract

There occurs frequently in coal a white carbonate which, when it is referred to at all by scientific writers on coal, is usually described as calcium carbonate. It occurs as a rule in the form of thin layers infilling the joint-cracks which lie normal to the bedding-planes, though at times it may be seen infilling other divisional planes which may cut across the bedding obliquely.

Information

Type
Research Article
Information
Mineralogical magazine and journal of the Mineralogical Society , Volume 16 , Issue 75 , May 1912 , pp. 219 - 223
Copyright
Copyright © The Mineralogical Society of Great Britain and Ireland 1912

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References

Note

1 I am indebted to the various colliery proprietors for kindly sending specimens. For the Llanelly and Ashby specimens, I have to thank Mr. F. H. Butler and Mr. L. F. Wallis respectively.