2010
DOI: 10.1080/00288306.2010.499158
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Preferential oxidation of pyrite as a function of morphology and relict texture

Abstract: Environmental contamination from mines producing acid rock drainage, which is caused by sulphide mineral oxidation, represents one of the most significant environmental problems facing the international mining industry. This work investigates the mineral morphological effects on the rate of pyrite oxidation and the influence of relict morphological features on rapid oxidation and thus acid generation rates. Laboratory-based kinetic tests were performed on potentially-acid forming rock by measuring changes in p… Show more

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Cited by 41 publications
(18 citation statements)
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References 26 publications
(23 reference statements)
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“…It is possible that the high total acidity relates to fine grained, framboidal, reactive sulfide minerals in the mudstone compared to coarse, euhedral, less reactive sulfides in the sandstone rocks (Caruccio 1970). Research relating to variations in acid production from different rock types and relationships with pyrite morphology and other factors is in progress at Stockton Mine (Weisener & Weber 2010). …”
Section: Local Rock Type Variationsmentioning
confidence: 99%
“…It is possible that the high total acidity relates to fine grained, framboidal, reactive sulfide minerals in the mudstone compared to coarse, euhedral, less reactive sulfides in the sandstone rocks (Caruccio 1970). Research relating to variations in acid production from different rock types and relationships with pyrite morphology and other factors is in progress at Stockton Mine (Weisener & Weber 2010). …”
Section: Local Rock Type Variationsmentioning
confidence: 99%
“…Sediments at Stockton contain pyrite in various forms (Weisener & Weber 2010) and AMD is present at Stockton. Fe(III) rich precipitates from Stockton form during limestone (CaCO 3 ) neutralisation of acid mine drainage that is rich in Fe, Al and trace elements.…”
Section: Fe(iii) Rich Precipitates From Stockton and Blackballmentioning
confidence: 99%
“…The Genesis Particle Phase cluster analysis software was used for modal mineralogical determinations based on 4000 individual particles. The modal percentages are calculated on the proportion of sulfides relative to accessory minerals within the matrix material (Weisener and Weber, 2010). In addition, X-ray diffraction (XRD) patterns of representative samples of FFT were studied at the National Research Council (NRC) in Ottawa, Ontario, Canada using a RIGAKU D/MAX 2500 rotating-anode powder diffractometer, with monochromatic Cu Ka radiation at 50 kV, 260 mA, a step-scan 0.02°, at a scan rate of 1°/min in 2h from 5°t o 70°.…”
Section: Spectroscopic Characterizationmentioning
confidence: 99%