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http://hdl.handle.net/11375/19314
Title: | Evaluation and Application of Radiochemical Neutron Activation to Noble Metal Analysis |
Authors: | Evans, Noreen J. |
Advisor: | Crocket, James H. |
Department: | Geology |
Keywords: | evaluation, application, radiochemical, neutron, activation, noble, metal, analysis, greenstone |
Publication Date: | May-1987 |
Abstract: | <p> A rapid and simple radiochemical neutron activation technique involving tellurium coprecipitation of Au, lr, Pd and Pt was evaluated using the U.S.G.S. standards PCC-1 (peridotite) and DTS-1 (dunite) as well as a house standard, JHC-6 (spinifex zone of a komati itic peridotite). It was then applied to the analysis of samples of Archean greenstone from the Red Lake area.</p> <p> The technique gives detection limits of 0.01-0.02, 0.02, 0.1-0.4 and 1-2 ppb for Au, Ir, Pd and Pt respectively and precisions of <25-35%. The method can be successfully applied to the analysis of PGE levels in sulphur-poor rocks, and large numbers of samples can be processed in a short period of time.</p> <p> A comparison of PGE content between several types of mafic rocks was made as well as an investigation of possible secular trends (Archean vs. Phanerozoic) in PGE concentration.</p> |
URI: | http://hdl.handle.net/11375/19314 |
Appears in Collections: | Open Access Dissertations and Theses |
Files in This Item:
File | Description | Size | Format | |
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Evans_Noreen_J._1987May_Masters..pdf | 3.85 MB | Adobe PDF | View/Open |
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