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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.

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.