High gold concentrations in sulphide-bearing magma under oxidizing conditions

Nature Geoscience

Volumn 4, Issue 2, 2011, Pages 112-115

  Botcharnikov, Roman E ^a   Linnen, Robert L ^b,f   Wilke, Max ^c   Holtz, Francois ^a   Jugo, Pedro J ^d   Berndt, Jasper ^e  

^a LEIBNIZ UNIVERSITY HANNOVER   (Germany)

^b UNIVERSITY OF WATERLOO   (Canada)

^c GFZ GERMAN RESEARCH CENTRE FOR GEOSCIENCES   (Germany)

^d LAURENTIAN UNIVERSITY   (Canada)

^e UNIVERSITY OF MÜNSTER   (Germany)

^f UNIVERSITY OF WESTERN ONTARIO   (Canada)

Author keywords

[No Author keywords available]

Indexed keywords

ANDESITE; BASALT; CONCENTRATION (COMPOSITION); GOLD; HOT SPOT; MAGMA; MOBILIZATION; ORE DEPOSIT; OXIDATION; REDOX CONDITIONS; SILICATE; SULFATE; SULFIDE;

EID: 79551611500     PISSN: 17520894     EISSN: 17520908     Source Type: Journal    
DOI: 10.1038/ngeo1042     Document Type: Article

References (23)

1. Hamlyn, P. R., Keays, R. R., Cameron, W. E., Crawford, A. J. & Waldron, H. M. Precious metals in magnesian low-Ti lavas: Implications for metallogenesis and sulfur saturation in primary magmas. Geochim. Cosmochim. Acta 49, 1797-1811 (1985).
2. Keays, R. R. The role of komatiitic and picritic magmatism and S-saturation in the formation of ore deposits. Lithos 34, 1-18 (1995).
3. Mungall, J. E. Roasting the mantle: Slab melting and the genesis of major Au and Au-rich Cu deposits. Geology 30, 915-918 (2002).
4. Richards, J. P. Tectono-magmatic precursors for porphyry Cu-(Mo-Au) deposit formation. Econ. Geol. 98, 1515-1533 (2003).
5. Solomon, M. Subduction, arc reversal, and the origin of porphyry copper-gold deposits in island arcs. Geology 18, 630-633 (1990).
6. Peck, D. C. & Keays, R. R. Insights into the behavior of precious metals in primitive, S-undersaturated magmas; evidence from the Heazlewood River complex, Tasmania. Can. Mineral. 28, 553-577 (1990).
7. Sisson, T. W. Native gold in a Hawaiian alkalic magma. Econ. Geol. 98, 643-648 (2003).
8. Brenan, J. M., McDonough, W. F. & Ash, R. An experimental study of the solubility and partitioning of iridium, osmium and gold between olivine and silicate melt. Earth Planet. Sci. Lett. 237, 855-872 (2005).
9. Fleet, M. E., Crocket, J. H., Liu, M. H. & Stone, W. E. Laboratory partitioning of platinum-group elements (PGE) and gold with application to magmatic sulfide-PGE deposits. Lithos 47, 127-142 (1999).
10. Botcharnikov, R. E., Linnen, R. L. & Holtz, F. Solubility of Au in Cland S-bearing hydrous silicate melts. Geochim. Cosmochim. Acta 74, 2396-2411 (2010).
11. Jégo, S., Pichavant, M. & Mavrogenes, J. A. Controls on gold solubility in arc magmas: An experimental study at 1,000°C and 4 kbar. Geochim. Cosmochim. Acta 74, 2165-2189 (2010).
12. Borisov, A. & Palme, H. Experimental determination of the solubility of Au in silicate melts. Mineral. Petrol. 56, 297-312 (1996).
13. Simon, A. C., Candela, P. A., Piccoli, P. M., Mengason, M. & Englander, L. The effect of crystal-melt partitioning on the budgets of Cu, Au, and Ag. Am. Min. 93, 1437-1448 (2008).
14. Jugo, P. J., Candela, P. A. & Piccoli, P. M. Magmatic sulfides and Au:Cu ratios in porphyry deposits: An experimental study of copper and gold partitioning at 850°C, 100 MPa in a haplogranitic melt pyrrhotite intermediate solid solution gold metal assemblage, at gas saturation. Lithos 46, 573-589 (1999).
15. Jugo, P., Wilke, M. & Botcharnikov, R. E. Sulfur K-edge XANES analysis of natural and synthetic basaltic glasses: Implications for S speciation and S content as function of oxygen fugacity. Geochim. Cosmochim. Acta 74, 5926-5938 (2010).
16. Carroll, M. R. & Rutherford, M. J. Sulfur speciation in hydrous experimental glasses of varying oxidation state; results from measured wavelength shifts of sulfur X-rays. Am. Min. 73, 845-849 (1988).
17. Jugo, P. J., Luth, R. W. & Richards, J. P. Experimental data on the speciation of sulfur as a function of oxygen fugacity in basaltic melts. Geochim. Cosmochim. Acta 69, 497-503 (2005).
18. McDonough, W. F. & Sun, S. s. The composition of the Earth. Chem. Geol. 120, 223-253 (1995).
19. Mitchell, R. H. & Keays, R. R Abundance and distribution of gold, palladium and iridium in some spinel and garnet lherzolites: Implications for the nature and origin of precious metal-rich intergranular components in the upper mantle. Geochim. Cosmochim. Acta 45, 2425-2442 (1981).
20. Gueddari, K., Piboule, M. & Amossé, J. Differentiation of platinum-group elements (PGE) and of gold during partial melting of peridotites in the lherzolitic massifs of the Betico-Rifean range (Ronda and Beni Bousera). Chem. Geol. 134, 181-197 (1996).
21. Richards, J. P. Postsubduction porphyry Cu-Au and epithermal Au deposits: Products of remelting of subduction-modified lithosphere. Geology 37, 247-250 (2009).
22. Jugo, P. J., Luth, R. W. & Richards, J. P. An experimental study of the sulfur content in basaltic melts saturated with immiscible sulfide or sulfate liquids at 1,300°C and 1.0 GPa. J. Petrol. 46, 783-798 (2005).
23. Toulmin, P. III & Barton, P. B. Jr A thermodynamic study of pyrite and pyrrhotite. Geochim. Cosmochim. Acta 28, 641-671 (1964).