Objective geological logging using portable XRF geochemical multi-element data at Plutonic Gold Mine, Marymia Inlier, Western Australia

摘要: Abstract Geological logging by mine and exploration geologists involves the application of a classification code that requires geologist to make subjective decision classify particular rock unit (e.g. type, alteration intensity, mineralisation content). Where multiple carry out this approach will most likely result in inconsistencies are difficult monitor or assess over time. A potential solution problem is have method determine nature given sample based on set fixed quantifiable parameters. Plutonic Gold Mine (Plutonic), Western Australia, has growing dataset more than 150 000 portable X-ray fluorescence (pXRF) multi-element analyses from core underground face samples, reconciled Au fire-assay concentration, codes. This study validates consistency with which Plutonic's codes been applied 2009 2013. In doing so, we developed schema allows objective utilising elemental data pXRF allocate code. K/V ratio used degree alteration, while As + 12Cu concentrations how sulphide-rich is. Thresholds were defined maintain pre-existing logged dataset. While far replacing geologist, complementary adds significant value