J. Quevedo, R. Kuyvenhoven
This paper presents the results of a study focussed on determining the distribution of cobalt in different types of pyrite of the La Estrella IOCG deposit in Chile. In the IOCG mineral deposits, where copper is the main product, the quantification and distribution of cobalt is required to correctly define the technical and economic viability of recovering cobalt as a by-product. In the La Estrella mineral deposit, seven alteration and mineralisation events were recognised through both optical and automated electronic mineralogical analysis. Of these seven events, five different types of pyrites were identified, each with unique characteristics of the pyrite crystals. Through advanced elemental analysis of these five types of pyrites, it was determined that the concentration and distribution of cobalt within the pyrite crystal is dependent on the mineralisation event. The results indicate high cobalt concentrations in the early pyrite mineralisation events, associated with relatively fine pyrite grains, and cobalt generally occurring in a solid form in the pyrite core. The late pyrite mineralisation event exhibits the lowest concentrations of cobalt, with cobalt predominantly present along the outer periphery of the pyrite. These results are relevant from a metallurgical point of view because the preferential location of cobalt within the pyrite crystal will influence the maximum metallurgical recovery of cobalt.
@article{b02a68f6-d948-4158-b593-1ef174e26541,
title={Concentration and distribution of cobalt in pyrites of the IOCG La Estrella ore deposit, Atacama Region, Chile},
author={J. Quevedo and R. Kuyvenhoven},
year={2020},
language={es}
}TY - JOUR TI - Concentration and distribution of cobalt in pyrites of the IOCG La Estrella ore deposit, Atacama Region, Chile AU - J. Quevedo AU - R. Kuyvenhoven PY - 2020 LA - es ER -
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