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oai:bura.brunel.ac.uk:2438/50892014-11-01T12:21:44Zcom_2438_58col_2438_3672

Morris, DFC Ahmad, Shujaat 2011-04-28T11:15:26Z 2011-04-28T11:15:26Z 1976 http://bura.brunel.ac.uk/handle/2438/5089 This thesis was submitted for the degree of Doctor of Philosophy and awarded by Brunel University. Three lateritic profiles from different localities and of varying depth and degrees of development were analyzed for precious metals, platinum, palladium, iridium and gold by radiochemical neutron-activation analysis. In addition, the distribution of major, minor and other trace constituents (iron, silicon, magnesium, nickel, cobalt, chromium, copper, manganese, zinc, uranium, sodium, chlorine and scandium) was determined. Instrumental activation analysis, radiochemical analysis and conventional chemical procedures were used. The mineralogy of the samples was studied using electron microscopy. Sufficient analytical data were obtained to justify the use of molecular proportions and net changes plots, and a coefficient correlation method, in order to elucidate the geochemical behaviour of the elements during the weathering processes. Submitted by Otue Ekong (lbsrooe@brunel.ac.uk) on 2011-04-28T11:14:56Z No. of bitstreams: 1 FulltextThesis.pdf: 11135165 bytes, checksum: 3422a9551a18f33badf70bc1b7c25302 (MD5) Approved for entry into archive by Otue Ekong(lbsrooe@brunel.ac.uk) on 2011-04-28T11:15:26Z (GMT) No. of bitstreams: 1 FulltextThesis.pdf: 11135165 bytes, checksum: 3422a9551a18f33badf70bc1b7c25302 (MD5) Made available in DSpace on 2011-04-28T11:15:26Z (GMT). No. of bitstreams: 1 FulltextThesis.pdf: 11135165 bytes, checksum: 3422a9551a18f33badf70bc1b7c25302 (MD5) Science Research Council; British Council en http://bura.brunel.ac.uk/bitstream/2438/5089/1/FulltextThesis.pdf Weathering processes Coefficient correlation method Instrumental activation analysis Radiochemical analysis Mineralogy Distribution of precious metals and geochemistry of lateritic ores Thesis