| Abstract: | Analyses for platinum-group elements of the varied rock suites of three Alaskan-type ultramafic to mafic multi-intrusive bodies are reported. Ir and Ru are less than analytical sensitivities of 100 and 20 ppb; Rh is less than or near 1 ppb. Average Pd assays vary among the rocks within intrusive complexes and between the three complexes (6.3, 13.7, 36.4 ppb); average Pt assays vary little among the same samples (27.9, 60.9, 34.0 ppb). Statistically adjusted Pt/(Pt + Pd) ratios increase in each suite from gabbro through clinopyroxenite to olivine-rich rocks, possibly owing to Pd fractionation.-G.J.N. |
| Genre: | Article |
| ProdID: | 70014569 |
| Citation Author: | Gray, F.; Page, N. J.; Carlson, C. A.; Wilson, S. A.; Carlson, R. R. |
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| Citation End Page: | 1260 |
| Citation Issue: | 5 |
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| Citation Language: | English |
| Citation Larger Work Title: | Economic Geology |
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| Citation Number Of Pages: | 9 |
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| Citation Search Results Text: | Platinum-group element geochemistry of zoned ultramafic intrusive suites, Klamath Mountains, California and Oregon.; 1986; Article; Journal; Economic Geology; Gray, F.; Page, N. J.; Carlson, C. A.; Wilson, S. A.; Carlson, R. R. |
| Citation Start Page: | 1252 |
| Citation Volume: | 81 |
| Citation Year: | 1986 |
| Type: | citation/reference |
| Text: | Platinum-group element geochemistry of zoned ultramafic intrusive suites, Klamath Mountains, California and Oregon.; 1986; Article; Journal; Economic Geology; Gray, F.; Page, N. J.; Carlson, C. A.; Wilson, S. A.; Carlson, R. R. |
| URL (THUMBNAIL): | http://pubs.er.usgs.gov/thumbnails/outside_thumb.jpg |
| Date Other: | Wed, 1 Jan 1986 00:00 -0600 |
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