769 2.3 3D Geological Modeling The Gelado project as a whole covers 1,241 hectares. In this work, modeling was carried out specifically for Arm 1, Arm 2, and part of Arm 3, resulting in a study area of 778 hectares. The mineralized tailings body was modeled based on a total of 306 drillholes and 841 samples, with characterization of grades for Fe, SiO₂, Al₂O₃, Mn, CaO, MgO, TiO₂, and particle-size fractions of +0.250 mm, +0.150 mm, +0.106 mm, +0.075 mm, +0.045 mm, and −0.045 mm, using 25 × 25 × 5 m³ blocks and 3.125 × 3.124 × 0.5 m³ sub-blocks. The arms were modeled separately (Fig. 1). Figure 2 – Geological model 2.4 Exploratory and variographic analysis The exploratory analysis shows that the main element, Fe, is highly homogeneous, as evidenced by the percentiles, where 90% of the data have grades between 61.41% and 66.10%. This analysis supports the idea that the tailings stored in the dam have grades of suitable quality for potential economic viability. Figure 3 – Exploratory analysis of Fe occurrenc
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