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Lookup NU author(s): Professor Paul Younger
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The problems associated with predicting where mine water will emerge and what the quality will be in a post-closure situation are recognised world-wide. The closure of Frazer's Grove, a fluorspar mine in the North Pennines in the UK has given the opportunity to study in detail the relationship between rising groundwater and the strata/mineworkings through which it is rising. Detailed sampling and surveys both above and underground were carried out before, during and after rebound. During the rebound phase the mine water was stratified. Since the mine water emerged in August 1999, stratification has broken up and reestablished itself twice to date. The possible causes of the break-up of stratification are examined with the aid of hydrogeochemical data and geophysical techniques. The main contaminants present in the mine water are zinc, manganese, iron and sulphate. A general exponential decrease in dissolved metal concentration in the mine water is seen with time. The hydrogeochemical data also establishes the origin of the contamination in the mine water discharge with zinc and manganese originating from Frazer's Grove mine itself and iron from several sources. The Frazer's Grove mine investigation provides insight into water quality and its likely development with time in abandoned mines.
Author(s): Johnson KL, Younger PL
Publication type: Article
Publication status: Published
Journal: Geological Society Special Publication
ISSN (print): 0305-8719
Publisher: Geological Society Publishing House
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