Towards quantifying uncertainties in geological models for mineral resource estimation through outside-in deposit-scale structural geological analysis

Mineral Resource downgrades can be prevented by integrating better structural geological interpretations into project evaluations. Geological modelling for estimation is presented as a systematic process of analysis at the deposit-scale using drill-sampled grade data. The initial step in this to use Maximum Intensity Projection (MIP) rendering interpret axial symmetry and its orientation from interval mid-points deposit-scale, thus reducing process’s degrees freedom only three—estimating prolateness or lithological distribution. This approach contrasts with brute-force methods assessing uncertainty because direction fixed down-plunge orientation, eliminating outset, structurally implausible geometric configurations unrealistic scenarios common methods. Adopting new creating models means moving away conventional mining industry that prioritise operational considerations constructing resource estimates but fail explain complexities mineral deposits. We experiments practical case study historical gold mine Western Australia highlight significance analysing control deposit raw Our research based on anecdotal evidence suggesting erroneous leads unforeseen downgrades. However, we cannot confirm hypothesis there have been few, if any, independent public inquiries To establish underlying reasons significant certainty, impartial investigations (modelled accident aviation industry) are imperative.