Tailings pond seepage and sulfate equilibrium in the Pima mining district, Pima County, Arizona

Persistent Link:
http://hdl.handle.net/10150/276684
Title:
Tailings pond seepage and sulfate equilibrium in the Pima mining district, Pima County, Arizona
Author:
Scovill, Georgia Lynn, 1962-
Issue Date:
1988
Publisher:
The University of Arizona.
Rights:
Copyright © is held by the author. Digital access to this material is made possible by the University Libraries, University of Arizona. Further transmission, reproduction or presentation (such as public display or performance) of protected items is prohibited except with permission of the author.
Abstract:
Mining activity is suspected of contributing sulfate and total dissolved solids (TDS) to ground water downgradient of the Pima mining district. High ionic concentrations in tailing impoundments suggest that tailings-pond recharge may be a source of the contamination. Experiments indicated that sulfate is not significantly produced by inorganic sulfide oxidation in the tailings ponds. Tailings pond water chemistries were compared with historical water quality analyses in the Pima district. The U.S.G.S. computer program PHREEQE modeled saturation indices for anhydrite, calcite, fluorite, and gypsum in water chemistries throughout the study area. Well water downgradient of the mines had lower saturation indices than tailings pond water which discredits the claim that tailings-pond recharge is acquiring salts as it percolates to the aquifer. Evidence supports the opinion that tailings pond seepage is contributing to the sulfate and TDS content in ground water downgradient of the ponds.
Type:
text; Thesis-Reproduction (electronic)
Keywords:
Tailings dams -- Environmental aspects -- Arizona -- Pima County.; Groundwater -- Arizona -- Pima County -- Quality.
Degree Name:
M.S.
Degree Level:
masters
Degree Program:
Graduate College; Hydrology and Water Resources
Degree Grantor:
University of Arizona
Advisor:
Bassett, R. L.; Artiola, J. F.

Full metadata record

DC FieldValue Language
dc.language.isoen_USen_US
dc.titleTailings pond seepage and sulfate equilibrium in the Pima mining district, Pima County, Arizonaen_US
dc.creatorScovill, Georgia Lynn, 1962-en_US
dc.contributor.authorScovill, Georgia Lynn, 1962-en_US
dc.date.issued1988en_US
dc.publisherThe University of Arizona.en_US
dc.rightsCopyright © is held by the author. Digital access to this material is made possible by the University Libraries, University of Arizona. Further transmission, reproduction or presentation (such as public display or performance) of protected items is prohibited except with permission of the author.en_US
dc.description.abstractMining activity is suspected of contributing sulfate and total dissolved solids (TDS) to ground water downgradient of the Pima mining district. High ionic concentrations in tailing impoundments suggest that tailings-pond recharge may be a source of the contamination. Experiments indicated that sulfate is not significantly produced by inorganic sulfide oxidation in the tailings ponds. Tailings pond water chemistries were compared with historical water quality analyses in the Pima district. The U.S.G.S. computer program PHREEQE modeled saturation indices for anhydrite, calcite, fluorite, and gypsum in water chemistries throughout the study area. Well water downgradient of the mines had lower saturation indices than tailings pond water which discredits the claim that tailings-pond recharge is acquiring salts as it percolates to the aquifer. Evidence supports the opinion that tailings pond seepage is contributing to the sulfate and TDS content in ground water downgradient of the ponds.en_US
dc.typetexten_US
dc.typeThesis-Reproduction (electronic)en_US
dc.subjectTailings dams -- Environmental aspects -- Arizona -- Pima County.en_US
dc.subjectGroundwater -- Arizona -- Pima County -- Quality.en_US
thesis.degree.nameM.S.en_US
thesis.degree.levelmastersen_US
thesis.degree.disciplineGraduate Collegeen_US
thesis.degree.disciplineHydrology and Water Resourcesen_US
thesis.degree.grantorUniversity of Arizonaen_US
dc.contributor.advisorBassett, R. L.en_US
dc.contributor.advisorArtiola, J. F.en_US
dc.identifier.proquest1333261en_US
dc.identifier.oclc20780174en_US
dc.identifier.bibrecord.b17083862en_US
dc.identifier.bibrecord.b17083850en_US
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