Qualified Persons and Mineral Resource and Reserve Estimation

• Localización: Industrial Minerals, ISSN 0019-8544, Nº. 546, 2013
• Idioma: inglés
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• Resumen

  • The inferred resource classification is often based on limited and highly variable data. The QP therefore proceeds on the basis that "confidence in the estimate is insufficient to allow the meaningful application of technical and economic parameters or to enable an evaluation of economic viability worthy of public disclosure".

    As confidence in the estimate increases, the QP may classify the resource as an indicated resource. This is a key step, as "an indicated mineral resource estimate is of sufficient quality to support a preliminary feasibility study which can serve as the basis for major development decisions." The highest level of resource classification is a measured resource. A QP can classify a resource as measured only when "the nature, quality, quantity and distribution of data are such that the tonnage and grade of the mineralisation can be estimated to within close limits and that variation from the estimate would not significantly affect potential economic viability."