Exploration for platinum-group element deposits by Editors : J.E. Mungall

By Editors : J.E. Mungall

SC 35, 526 pages, 2005

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Contrib. Mineral. Petrol. 101, 447-457. , BALLHAUS, C. & HOLZHEID, A. (2004b): Fractionation of the platinum-group elements during mantle melting. Science 305, 1951-1953. J. (1993): Partitioning of the platinum group elements and gold between silicate and sulphide magmas in the Munni Munni Complex, Western Australia. Geochim. Cosmochim Acta 57, 1277-1290. BORISOV, A. & PALME, H. (1997): Experimental determination of the solubility of platinum in silicate melts. Geochim. Cosmochim. Acta 61, 4349-4357.

BALLHAUS, C. & HOLZHEID, A. (2004a): Stabilities of laurite RuS2 and monosulfide liquid solution at magmatic temperature. Chem. Geol. 208, 265-271. J. (1989): Are bushveld U-type parent magmas boninites or contaminated komatiites. Contrib. Mineral. Petrol. 101, 447-457. , BALLHAUS, C. & HOLZHEID, A. (2004b): Fractionation of the platinum-group elements during mantle melting. Science 305, 1951-1953. J. (1993): Partitioning of the platinum group elements and gold between silicate and sulphide magmas in the Munni Munni Complex, Western Australia.

If complete sulfide oxidation occurs, then even at the lowest degrees of partial melting, the basaltic magma will be extracted from its mantle source in a state of sulfide undersaturation. This process has been implicated in the genesis of anomalously Au-rich alkaline magmas at very low degrees of partial melting (Mungall 2002d), and should similarly affect the PGE. Whereas the solubility of Pd is quite high in basaltic liquid in the absence of a sulfide phase, Pt and the IPGE are known to be close to alloy saturation at typical concentrations in basaltic magmas (Fig.

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