This thematic issue dedicated to Prof. Anthony Naldrett contains 25 papers focused on Ni-Cu-PGE and chromite deposits from a number of worldwide occurrences, in a variety of differing geological settings. The studies presented rely heavily on petrographic and field observations, complimented by ancillary analytical techniques including whole-rock geochemistry, sulfur isotopes, and microanalytical techniques such as scanning electron microscopy (SEM), electron microprobe analysis (EPMA), and laser ablation-inductively coupled plasma-mass spectrometry (LA-ICP-MS. Evolving methods such as submicrometer-scale analyses, automated mineralogy, and microbeam X-ray fluorescence spectroscopy (XRF) element mapping are also presented. Descriptions of newly discovered platinum group minerals (PGM), along with the...

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