Unusual morphologies and the occurrence of pseudomorphs after ikaite (CaCO3·6H2O) in fast growing, hyperalkaline speleothems

Unusual speleothems, associated with hyperalkaline (pH > 12) groundwaters have formed within a shallow, abandoned railway tunnel at Peak Dale, Derbyshire, UK. The hyperalkaline groundwaters are produced by the leaching of a thin layer (

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Bibliographic Details
Published in:Mineralogical magazine 2017-06, Vol.81 (3), p.565-589
Main Authors: Field, L. P, Milodowski, A. E, Shaw, R. P, Stevens, L. A, Hall, M. R, Kilpatrick, A, Gunn, J, Kemp, S. J, Ellis, M. A
Format: Article
Language:English
Subjects:
alkalic composition
calcite
calcium carbonate
calcium carbonate hexahydrate
carbonates
crystal form
crystal growth
Derbyshire England
England
Europe
Great Britain
ground water
hydrates
hyperalkaline
ikaite
Mineralogy
nonsilicates
occurrence
Peal Dale England
polymorphism
pseudomorphism
solution features
speleothem
speleothems
stalagmites
tunnels
United Kingdom
water of crystallization
Western Europe
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Description
Summary:Unusual speleothems, associated with hyperalkaline (pH > 12) groundwaters have formed within a shallow, abandoned railway tunnel at Peak Dale, Derbyshire, UK. The hyperalkaline groundwaters are produced by the leaching of a thin layer (
ISSN:0026-461X
1471-8022
DOI:10.1180/minmag.2016.080.111