Applied Mineral Inventory Estimation by Alastair J. Sinclair

By Alastair J. Sinclair

Utilized Mineral stock Estimation offers a accomplished utilized method of the estimation of mineral resources/reserves with specific emphasis at the geological foundation of such estimations, the necessity for and upkeep of a top quality assay information base, the sensible use of finished exploratory information review, and the significance of a complete geostatistical method of the estimation method. useful difficulties and genuine facts are used all through as illustrations. each one bankruptcy ends with a precis of useful issues, a couple of routines and a brief record of references for supplementary examine. This textbook is acceptable for any college or mining institution that provides senior undergraduate and graduate pupil classes on mineral resource/reserve estimation.

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Polygonal methods 3. Triangular method 4. Regular grid, random stratified grid 5. ) 6. Contouring methods. , grades) have been estimated and that are commonly used to estimate points on a regular grid. Each of these methods has found applications in industry for resource/reserve estimation; all are empirical and their use has depended largely on the experience of the user. 11: Examples of some common methods of grade estimation (after Patterson, 1959). (a) Polygonal: uniform rectan- gular blocks centered on uniformly spaced data.

032 percent Mo if all costs to the mine are included. The formula must balance with the mine operating accounts, and is most sensitive to metal prices and head grades. because of the inherent economic implications and is particularly useful in cases in which the less desirable method of “equivalent” grades has been used for estimation purposes. , Blackwell and Sinclair, 1993; Champigny and Grimley, 1990; Gibbs, 1990) and a substantial amount of software exists that has been designed particularly for use in the mining industry.

8: PRACTICAL CONSIDERATIONS 1. Each specific mineral inventory estimation is a problem that must be cast in its true mining context. Possible (even alternative) operating scenarios must be designed as a basis for a quantitative evaluation. There is no point to considering a totally unrealistic scenario. 2. It is essential to understand thoroughly the terminology in use in the mineral industry. Consequently, the ramifications and ambiguities of definitions are a necessary basis for embarking on a mineral inventory estimation.

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