Identification of multiple mineralization phases by statistical methods
نویسنده
چکیده
Ore-reserve estimations of deposits with low mineral concentrations, such as those of copper, gold and tin, are usually made on the assumption that the grades follow a lognormal distribution. Multiple mineralization or reworking of a deposit may have modified the simple distribution expected — producing an overall distribution of grades which can be adequately described by a mixture of lognormal curves. A new method of separating components of mixed populations is described, one simulated and three practical examples of its application being presented.
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