Arsenic speciation in pyrite and secondary weathering phases, Mother Lode gold district, Tuolumne County, California

Arsenic speciation in pyrite and secondary weathering phases, Mother Lode gold district, Tuolumne County, California

Arsenian pyrite, formed during Cretaceous gold mineralization, is the primary source of As along the Melones fault zone in the southern Mother Lode Gold District of California. Mine tailings and associated weathering products from partially submerged inactive gold mines at Don Pedro Reservoir, on th...

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Veröffentlicht in:Applied geochemistry 2004-10, Vol.15 (8)
Hauptverfasser: Savage, K.S., Tingle, Tracy N., O'Day, Peggy A., Waychunas, Glenn A., Bird, Dennis K.
Format: Artikel
Sprache:eng
Schlagworte:
ARSENIC
BIOLOGICAL AVAILABILITY
CALIFORNIA
ECOLOGICAL CONCENTRATION
ENVIRONMENTAL SCIENCES
ENVIRONMENTAL TRANSPORT
GEOCHEMISTRY
GEOSCIENCES
GOETHITE
GOLD ORES
LAKES
MINERAL WASTES
MINERALIZATION
PYRITE
SCHISTS
WEATHERING
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Zusammenfassung:Arsenian pyrite, formed during Cretaceous gold mineralization, is the primary source of As along the Melones fault zone in the southern Mother Lode Gold District of California. Mine tailings and associated weathering products from partially submerged inactive gold mines at Don Pedro Reservoir, on the Tuolumne River, contain approx. 20-1300 ppm As. The highest concentrations are in weathering crusts from the Clio mine and nearby outcrops which contain goethite or jarosite. As is concentrated up to 2150 ppm in the fine-grained (
ISSN:0883-2927
1872-9134