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dc.contributor.authorFougerouse, Denis
dc.contributor.authorReddy, Steven
dc.contributor.authorAylmore, Mark
dc.contributor.authorYang, L.
dc.contributor.authorGuagliardo, P.
dc.contributor.authorSaxey, David
dc.contributor.authorRickard, William
dc.contributor.authorTimms, Nicholas
dc.identifier.citationFougerouse, D. and Reddy, S.M. and Aylmore, M. and Yang, L. and Guagliardo, P. and Saxey, D.W. and Rickard, W.D.A. et al. 2021. A new kind of invisible gold in pyrite hosted in deformation-related dislocations. Geology.

Mining of “invisible gold” associated with sulfides in gold ores represents a significant proportion of gold production worldwide. Gold hosted in sulfide minerals has been proposed to be structurally bound in the crystal lattice as a sulfide-gold alloy and/or to occur as discrete metallic nanoparticles. Using a combination of microstructural quantification and nanoscale geochemical analyses on a pyrite crystal from an orogenic gold deposit, we show that dislocations hosted in a deformation low-angle boundary can be enriched in Ni, Cu, As, Pb, Sb, Bi, and Au. The cumulative trace-element enrichment in the dislocations is 3.2 at% higher compared to the bulk crystal. We propose that trace elements were segregated during the migration of the dislocation following the dislocation-impurity pair model. The gold hosted in nanoscale dislocations represents a new style of invisible gold.

dc.titleA new kind of invisible gold in pyrite hosted in deformation-related dislocations
dc.typeJournal Article
curtin.departmentSchool of Earth and Planetary Sciences (EPS)
curtin.accessStatusOpen access
curtin.facultyFaculty of Science and Engineering
curtin.contributor.orcidFougerouse, Denis [0000-0003-3346-1121]
curtin.contributor.scopusauthoridFougerouse, Denis [56418452200]

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