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Geochemical Controls on Uranium Release from Neutral-pH Rock Drainage Produced by Weathering of Granite, Gneiss, and Schist Skierszkan, Elliott Karl; Dockrey, John W.; Mayer, K. Ulrich; Bondici, Viorica F.; McBeth, Joyce M.; Beckie, Roger D.
Abstract
We investigated geochemical processes controlling uranium release in neutral-pH (pH ≥ 6) rock drainage (NRD) at a prospective gold deposit hosted in granite, schist, and gneiss. Although uranium is not an economic target at this deposit, it is present in the host rock at a median abundance of 3.7 µg/g, i.e., above the average uranium content of the Earth’s crust. Field bin and column waste-rock weathering experiments using gneiss and schist mine waste rock produced circumneutral-pH (7.6 to 8.4) and high-alkalinity (41 to 499 mg/L as CaCO₃) drainage, while granite produced drainage with lower pH (pH 4.7 to >8) and lower alkalinity (
Item Metadata
Title |
Geochemical Controls on Uranium Release from Neutral-pH Rock Drainage Produced by Weathering of Granite, Gneiss, and Schist
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Creator | |
Publisher |
Multidisciplinary Digital Publishing Institute
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Date Issued |
2020-12-09
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Description |
We investigated geochemical processes controlling uranium release in neutral-pH (pH ≥ 6)
rock drainage (NRD) at a prospective gold deposit hosted in granite, schist, and gneiss. Although
uranium is not an economic target at this deposit, it is present in the host rock at a median
abundance of 3.7 µg/g, i.e., above the average uranium content of the Earth’s crust. Field bin and
column waste-rock weathering experiments using gneiss and schist mine waste rock produced
circumneutral-pH (7.6 to 8.4) and high-alkalinity (41 to 499 mg/L as CaCO₃) drainage, while granite
produced drainage with lower pH (pH 4.7 to >8) and lower alkalinity (
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Subject | |
Genre | |
Type | |
Language |
eng
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Date Available |
2021-01-06
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Provider |
Vancouver : University of British Columbia Library
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Rights |
CC BY 4.0
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DOI |
10.14288/1.0395471
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URI | |
Affiliation | |
Citation |
Minerals 10 (12): 1104 (2020)
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Publisher DOI |
10.3390/min10121104
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Peer Review Status |
Reviewed
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Scholarly Level |
Faculty
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Rights URI | |
Aggregated Source Repository |
DSpace
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Item Media
Item Citations and Data
Rights
CC BY 4.0