1. (a) Dot map showing the distribution of the top Jenks class of the Spearman correlation coefficients (rs > 0.53; red circles) of NGSA AR samples with respect to the Au mineralization related Coolgardie reference sample (# ; star symbol), as well as the top Jenks class of the Spearman correlation coefficients (rs > 0.48; red squares) of NGSA AR samples with respect to the Au mineralization related Ballarat reference sample (# ; star symbol).
(a) Dot map showing the distribution of the top Jenks class of the Spearman correlation coefficients (rs > 0.53; red circles) of NGSA AR samples with respect to the Au mineralization related Coolgardie reference sample (# ; star symbol), as well as the top Jenks class of the Spearman correlation coefficients (rs > 0.48; red squares) of NGSA AR samples with respect to the Au mineralization related Ballarat reference sample (# ; star symbol). Samples from all other classes are shown as grey circles. All mineral occurrences with ‘Au’ as the first listed commodity (N = 51 664) over Australia (Sexton 2011) also shown (as yellow dots), as are the outlines of geological regions of Australia (Blake & Kilgour 1998). (b, c) Histograms showing the distribution of rs values relative to the Coolgardie and Ballarat samples, respectively, together with the mean (µ), standard deviations (σ) and Jenks class boundaries. Locations discussed in text are shown.
P. de Caritat, and A. Mann Geochemistry: Exploration, Environment, Analysis 2019;19:58-73
© 2018 Commonwealth of Australia (Geoscience Australia). Published by The Geological Society of London for GSL and AAG