Model review and validation

Abstract

Geostatistically estimated mineral resource block model has to be validated before it is released for the mine projects evaluation and the production planning tasks. Validating procedures should be comprehensive and allowing to assess validity of the global and local estimates. Degree of smoothing in the model must be estimated and its impact on recovered resources quantified. The most commonly used techniques for validating the mineral resource estimates includes application of the spider-diagrams comparing the estimates with the input data and the crossvalidation techniques.