This two-day workshop provides a introduction to exploration geochemistry and the use of ioGAS software. The first day is an introduction to exploratory data analysis (EDA) on geochemical datasets. IMDEX ioGAS™ will be used as a tool to illustrate EDA concepts. This comprehensive course covers topics such as data validation/QC tools, univariate and multivariate plots, downhole and line plots to interrogate your drill-hole data, outlier detection and multivariate analysis methods.

The second day consists of Carl Brauhart’s workshop, which begins with a PowerPoint presentation that outlines ten skills that prove to be extremely useful in Exploration Geochemistry time and again. The presentation is followed by six modules that use real world data to illustrate:

·       The power of X-Y graphs to help establish multi-element relationships

·       Probability plots as a data validation tool and a key to identifying separate populations

·       Principal Component Analysis to further investigate these relationships

·       K-means clustering and UMAP plots (Putra Sadikin)

·       The concept of closure and its importance to correctly identifying mineralogical relationships

·       Log additive indices to refine metal associations related to mineralisation

·       Alteration geochemistry and the fundamental importance of tying geochemical relationships to mineralogy

Immobile element geochemistry to track variations in the original bulk composition of protoliths (a key to understanding alteration geochemistry) and also to identify different lineages of both igneous suites (melt source) and sedimentary sequences (provenance).