Abstract
The mafic-ultramafic complexes of the Vizcaino Peninsula, Baja California Sur, northwestern Mexico contain chromitite bodies hosted in duniteharzburgite. The platinum-group mineralisation in the chromitites is dominated by Ru-, Os-, and Ir-rich minerals. They include members of the laurite-erlichmanite solid solution series, irarsite and Os-Ir alloys associated with Ni-Cu sulfides, all occurring as inclusions in larger chromite crystals or in fractures across them. The fractionation of PGE in the form of PGM is discussed here in terms of a dynamic environment characterized by the turbulent mixing/mingling of batches of melts with distinct PGE compositions, within dunitic channels formed as a result of mantle-melt reactions.
Original language | English |
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Title of host publication | Mineral deposit research for a high-tech world |
Subtitle of host publication | proceedings of the 12th biennial SGA meeting |
Editors | Erik Jonsson |
Place of Publication | Sweden |
Publisher | SGU-SVERIGES GEOLOGISKA UNDERSOKNING-GEOLOGY SURVEY SWEDEN |
Pages | 1017-1019 |
Number of pages | 3 |
Volume | 3 |
ISBN (Print) | 9789174032079 |
Publication status | Published - 2013 |
Event | 12th Biennial SGA Meeting: Mineral Deposit Research for a High-Tech World - Uppsala, Sweden Duration: 12 Aug 2013 → 15 Aug 2013 |
Conference
Conference | 12th Biennial SGA Meeting |
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Country/Territory | Sweden |
City | Uppsala |
Period | 12/08/13 → 15/08/13 |
Keywords
- Ultramafic-mafic complex
- Platinum-group elements
- chromitite
- Vizcaino
- sulfur saturation