Figure 2 – Geological cross-section of the Chilean IOCG study site showing the host stratigraphy, fault-controlled mineralization, and the relationship between Manto-style and feeder-structure orebodies. Prospective blind reconciliation spanned eight consecutive quarters (2021–2022), with all models trained exclusively on pre-2021 data. Results at the 0.5% Cu cut-off are presented in Table 1. Table 1 – Chilean IOCG forward-facing reconciliation (2021–2022) Model Missed Mineralization Reconciled HG vs. Kriging Kriging (site model) 83.2% 16.8% Baseline Method 1: D(Cu) ~ D(Cu) 82.8% 17.2% ~1× Method 3: D(Cu, ZFCU) ~ D(Cu, ZFCU) 71.8% 28.2% 1.67×
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