Geometallurgical modelling techniques applicable to pre-feasibility projects: La Colosa case study

摘要: La Colosa is a world-class porphyry Au project located in Colombia, currently undergoing pre-feasibility analysis. As part of collaboration between AngloGold Ashanti and the AMIRA P843A GeMIII Project, application emerging geometallurgical characterisation testing modelling tools has been incorporated early stages development. The aim study to map inherent comminution variability across deposit providing information critical for mine/mill design optimisation. In this study, site-based data incorporating multi-element assays, QXRD bulk mineralogy measurements, EQUOtip rebound hardness data, routine geological logging from 59 diamond drill holes integrated with range geometallurgically specific test (i.e. GeMCi, A*b, BMWi). work paper demonstrates integration techniques used at link acquisition methods results through development proxy support models. incorporates statistical including principal component analysis regression modelling. By creating models, index estimates can be propagated into database enabling processing domains defined. These provide first spatial representation performance compared against traditional domains. This provides foundation ongoing as evolves cycles an operational mine.