Effect of pyrite textures and composition on flotation performance: A review

Jefferson, Mayra; Yenial-Arslan, Unzile; Evans, Catherine; Curtis-Morar, Catherine; O'Donnell, Roxanne; Parbhakar-Fox, Anita; Forbes, Elizaveta

doi:10.1016/j.mineng.2023.108234

Cited by 13 publications

(2 citation statements)

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“…This study also displayed the grain-scale distribution of minor elements and how these distributions relate to textures and microstructures. A detailed understanding of this is essential to efforts aimed at recovery of value components (precious and critical metals), as well as removal of deleterious components (e.g., [35][36][37]). The development of low-energy, low-waste methods of ore processing, coupled with recovery of all contained elements of value, is not only linked to mineralogy and rock features at the hand specimen scale, but also to the hidden features that impact on and control rock fragmentation, separation, and recovery.…”

Section: Implications and Outlookmentioning

confidence: 99%

“…Firstly, efficient comminution benefits from understanding deformation-induced microstructures that are otherwise invisible. Secondly, accurate tracking of minor ore components of value (Au, Ag), or potential value (e.g., Co) through processing is contingent on a comprehensive appreciation of their distributions at the grain-scale (e.g., [35]), especially considering the critical interplay between pyrite textures and metallurgical performance [36,37].…”

Section: Introductionmentioning

confidence: 99%

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Coupled Microstructural EBSD and LA-ICP-MS Trace Element Mapping of Pyrite Constrains the Deformation History of Breccia-Hosted IOCG Ore Systems

King,

Cook,

Ciobanu

et al. 2024

Minerals

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Electron backscatter diffraction (EBSD) methods are used to investigate the presence of microstructures in pyrite from the giant breccia-hosted Olympic Dam iron–oxide copper gold (IOCG) deposit, South Australia. Results include the first evidence for ductile deformation in pyrite from a brecciated deposit. Two stages of ductile behavior are observed, although extensive replacement and recrystallization driven by coupled dissolution–reprecipitation reaction have prevented widespread preservation of the earlier event. Laser ablation inductively coupled plasma mass spectrometry (LA-ICP-MS) element maps of pyrite confirm that many pyrite grains display compositional zoning with respect to As, Co, and Ni, but that the zoning is often irregular, patchy, or otherwise disrupted and are readily correlated with observed microstructures. The formation of ductile microstructures in pyrite requires temperatures above ~260 °C, which could potentially be related to heat from radioactive decay and fault displacements during tectonothermal events. Coupling EBSD methods with LA-ICP-MS element mapping allows a comprehensive characterization of pyrite textures and microstructures that are otherwise invisible to conventional reflected light or BSE imaging. Beyond providing new insights into ore genesis and superimposed events, the two techniques enable a detailed understanding of the grain-scale distribution of minor elements. Such information is pivotal for efforts intended to develop new ways to recover value components (precious and critical metals), as well as remove deleterious components of the ore using low-energy, low-waste ore processing methods.

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Section: Implications and Outlookmentioning

confidence: 99%