Magmatic volatiles and platinum-group element mineralization in the Stillwater layered intrusion, U.S.A
| Autor: | Amy P. Parker, Patricia L. Clay, Alan E. Boudreau, Ray Burgess, Brian O’Driscoll |
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| Rok vydání: | 2022 |
| Předmět: | |
| Zdroj: | American Mineralogist. 107:797-814 |
| ISSN: | 1945-3027 0003-004X |
| Popis: | The activity of volatile-rich fluids may be important in the evolution of basaltic magmatic systems and associated precious metal ore formation. There is evidence for Cl-rich fluids within the Stillwater Complex (Montana, U.S.A.), which have been linked to platinum and palladium mineralization in the economically important Johns-Manville (J-M) Reef ore body. We present the first data set for heavy halogens (Cl, Br, and I) and natural noble gas isotopes in bulk rock and mineral separates from the Peridotite Zone and the Olivine-Bearing Zone I of the Stillwater Complex, including samples from the J-M Reef and G Chromitite bodies. Our data reveal concentrations of 4 to 13 500 ppm for Cl, 26 ppb to 360 ppm for Br, and |
| Databáze: | OpenAIRE |
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