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- W2517105086 abstract "Characterisation of sulfide minerals (eg pyrite, sphalerite) in historic tailings can assist indetermining whether there are economic benefits of reprocessing such materials using modernmetallurgical practices. In addition, there are associated environmental advantages if the historictailings are actively generating acid and metalliferous drainage (AMD). At the Old Tailings Dam(OTD), Savage River, Western Tasmania, 38 Mt of pyritic tailings were deposited from 1967 to 1982;consequently it has been recognised as an AMD source. Long-term management options consideredfor this site have included the establishment of either a water, hard-engineered or vegetation cover.However, due to geotechnical challenges posed and the lack of success demonstrated by previouspilot studies, these strategies have not been implemented. Instead, resolving the pyrite chemistrycan allow for a first-pass assessment of whether reprocessing these tailings is a feasible option aspart of a long-term management strategy for this legacy site. Tailings samples (n = 144) were collected across the OTD from up to 2 m depth from five facies(A–E), and four zones (1 to 4; defined by hydrological regime and grain size). These materialswere subjected to acid-base accounting (ABA) and mineralogical evaluations to determine theirgeoenvironmental characteristics. Following this, 26 samples were selected for in-depth laserablation inductively coupled plasma mass spectrometry (LA-ICP-MS) investigations to evaluatepyrite chemistry across different tailings facies. The results revealed enrichment of Co and Niin these materials. Specifically, Co content was up to 3.0 wt per cent, particularly within faciesC to E, and Zones 3 and 4. Cobalt is recognised as a critical metal, therefore, reprocessing shouldbe considered as a future rehabilitation option for the OTD, pending resource definition usingestablished codes and practices." @default.
- W2517105086 created "2016-09-16" @default.
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- W2517105086 date "2016-01-01" @default.
- W2517105086 modified "2023-09-26" @default.
- W2517105086 title "Geometallurgical evaluations of mine waste – an example from the Old Tailings Dam, Savage River, Tasmania" @default.
- W2517105086 hasPublicationYear "2016" @default.
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