Composite is not simply an averaging process — it is a critical step in ensuring representative data for Resource & Reserve Estimation. Nickel laterite and REE deposits may require different compositing strategies due to differences in mineralization style, geological domains, grade variability, and sample support. Therefore, composite length should be defined based on the geological characteristics of the deposit rather than applying a uniform approach across commodities. Despite these differences, the fundamental principles remain consistent: validated assay data, robust geological and grade domaining, appropriate sample support, statistical and geostatistical analysis, and consistency with the block model and estimation methodology. A properly designed composite should preserve the geological character of the mineralization while providing a reliable and representative input for resource estimation. Geology should drive the composite strategy — not the commodity name alone. #ResourceEstimation #Geostatistics #Nickel #REE #MineralResources #MiningGeology #GeologicalModelling #ZVENIA