Paleohydrologic evolution of the St. Ives gold camp

A test of the viability of fluid–wall rock interaction mechanisms for changes in opaque phase assemblage in metasedimentary rocks in the Kambalda-St. Ives goldfield, Western Australia

“…A feature unaccounted for by the model is the albite-hosted, water-poor fluid inclusion compositions reported by Petersen et al (2005Petersen et al ( ,2006. Fluids in these inclusions are CO 2 -rich, with methane up to 5 mole %.…”

“…Gold mineralisation occurred after the bulk of the felsic magmatism and occurs in networks of brittle-ductile shear zones, with gold preferentially hosted in altered wall-rock adjacent to veins, shear zones and faults rather in the veins and faults themselves. Information on the component deposits is provided by Phillips and Groves (1984), Clark et al (1986), Neall and Phillips (1987), Watchorn (1998), Palin andXu (2000), Petersen et al (2005), Neumayr et al (2005) and Neumayr et al (2008).…”