Mass balance assessment of initial weathering processes derived from oxygen cionsumption rares in waste sulfide ore

Simple item page
dc.contributor.authorStrömberg, Ben_AU
dc.contributor.authorBanwart, SAen_AU
dc.contributor.authorBennett, JWen_AU
dc.contributor.authorRitchie, AIMen_AU
dc.date.accessioned2025-03-26T00:46:44Zen_AU
dc.date.available2025-03-26T00:46:44Zen_AU
dc.date.issued1994-04-24en_AU
dc.date.statistics2024-11en_AU
dc.descriptionPhysical copy held by ANSTO Library at DDC: 628.16832/7en_AU
dc.description.abstractA stoichiometric model for initial weathering processes in fresh waste rock has been developed for Aitik ore. Based on element mass balances, solubility equilibrium, mineralogy of unreacted waste rock, and literature data, we identified the dominant geochemical processes and determined geochemical reaction rates for weathering of pyrite, chalcopyrite, calcite, plagioclase and biotite using fluxes derived from large experimental columns filled with waste rock. The oxidation rate of reduced Fe and S was based on Oz-consumption rates that were previously determined in the columns. In the fresh waste rock, acidity production from pyrite weathering and rapid consumption of acidity by calcite dissolution dominate the proton balance. At an acidity production rate of 7.8 meq. kg-I year! of waste rock and a calcite alkalinity reservoir of 0-60 meq. kg-I, we expect the waste rock leachate to remain near-neutral pH for 0-8 years. When calcite is consumed and pH drops, dissolution of previously precipitated copper on the the order of 0-1.8 mmole copper kg-I of waste rock may temporarily increase the pollution load at the site.en_AU
dc.identifier.booktitleInternational Land Reclamation and Mine Drainage Conference and Third International Conference on the Abatement of Acidic Drainage : proceedings of a conference held in Pittsburgh, PA on April 24-29, 1994en_AU
dc.identifier.citationStrömberg, B., Banwart, S., Bennett, J. W., & Ritchie, A. I. M. (1994). Mass balance assessment of initial weathering processes derived from oxygen consumption rates in waste sulfide ore. Paper presented to the International Land Reclamation and Mine Drainage Conference and Third International Conference on the Abatement of Acidic Drainage, Pittsburgh, PA on April 24-29, 1994. In International Land Reclamation and Mine Drainage Conference and Third International Conference on the Abatement of Acidic Drainage : proceedings of a conference held in Pittsburgh, PA on April 24-29, 1994, (Vol. 2: pp. 363-370). United States Department of The Interior Bureau of Mines : United States.en_AU
dc.identifier.conferenceenddate1994-04-29en_AU
dc.identifier.conferencenameInternational Land Reclamation and Mine Drainage Conference and Third International Conference on the Abatement of Acidic Drainageen_AU
dc.identifier.conferenceplacePittsburgh, PAen_AU
dc.identifier.conferencestartdate1994-04-24en_AU
dc.identifier.otherSP 061-94en_AU
dc.identifier.pagination363-370en_AU
dc.identifier.placeofpublicationUnited Statesen_AU
dc.identifier.urihttps://apo.ansto.gov.au/handle/10238/16098en_AU
dc.identifier.volume2en_AU
dc.language.isoenen_AU
dc.publisherUnited States Department of The Interior Bureau of Minesen_AU
dc.subjectSubstoichiometryen_AU
dc.subjectWeatheringen_AU
dc.subjectRocksen_AU
dc.subjectOresen_AU
dc.subjectSolubilityen_AU
dc.subjectGeochemistryen_AU
dc.subjectPyriteen_AU
dc.subjectChalcopyriteen_AU
dc.subjectCalciteen_AU
dc.subjectBiotiteen_AU
dc.subjectDissolutionen_AU
dc.subjectCopperen_AU
dc.titleMass balance assessment of initial weathering processes derived from oxygen cionsumption rares in waste sulfide oreen_AU
dc.typeConference Paperen_AU
Files
Original bundle
Now showing 1 - 1 of 1
Thumbnail Image
Name:
Stromberg plus.pdf
Size:
7.68 MB
Format:
Adobe Portable Document Format
Description:
Download
License bundle
Now showing 1 - 1 of 1
Thumbnail Image
Name:
license.txt
Size:
1.63 KB
Format:
Item-specific license agreed upon to submission
Description:
Download
Collections
Conference Publications