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Analytical Chemistry in the Exploration, Mining and by A. Strasheim

By A. Strasheim

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Read Online or Download Analytical Chemistry in the Exploration, Mining and Processing of Materials. Plenary Lectures Presented at the International Symposium on Analytical Chemistry in the Exploration, Mining and Processing of Materials, Johannesburg, RSA, 23–27 August 1976 PDF

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Extra resources for Analytical Chemistry in the Exploration, Mining and Processing of Materials. Plenary Lectures Presented at the International Symposium on Analytical Chemistry in the Exploration, Mining and Processing of Materials, Johannesburg, RSA, 23–27 August 1976

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Nevertheless, there is a growing trend towards including rock sampling as an integral part of exploration programmes at some stage and, with more research advances, particularly in improved methods of interpreting the data, it is possible that this medium will find greater application in the future. * '* 1 h 7* : — N H ^ H I Principal areas of interest as defined by drainage survey k 1 mile Drill hole in plane crossing section at 4 5 ° indicated 0 . C. 49:10—D 1510 JOHN S. WEBB and MICHAEL THOMPSON TABLE 1.

E. Beamish who died earlier this year on April 8. FIRE ASSAY Classical lead assay Without any doubt the classical lead assay has proved to be the most import­ ant procedure for the concentration and isolation of the noble metals. In 1972 Beamish stated that during 40 years of research in this field he had not experienced a single example of failure of the classical assay to find a paying ore. The continued popularity of the assay is born out by a 1975 South African ore certification study. This work showed that 92% of all Pt analyses, received, were accomplished be fire assay, the largest majority of these being done by the classical lead method.

This work is a detailed account of procedures used in the assay laboratory of the Holy Roman Empire. It is surprising to note the attention paid to the running of blanks and duplicates, the latter being repeated if satis factory agreement was not obtained. With the increasing economic interest in the Pt metals, at the beginning of this century, there was a corresponding increase in research activity. E. Beamish records the frustration he experienced in coming into the field in the 1930's because of secretive research practices of the few rival indus­ trial groups engaged in noble metal production.

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