Abstract
Experimental studies have been conducted on the solubility of iron and other base metal sulfides in chloride solutions equilibrated with a synthetic quartz monzonite plus assemblages in the Fe-Cu-S-O system. Extraction vessel and cold-seal techniques were used. Most experimentation was on the pyrrhotite-pyrite-magnetite buffer for fixing fS2 and fO2, but K feldspar-muscovite-quartz controlled hydrogen ion activity in all cases. At 1 m total chloride and 1 kb, iron concentrations in a system containing only Fe as the base metal were 1,000 ± 150, 7,000 ± 700, 12,400 ± 1,000 and 14,000 ± 1,200 ppm at 400, 500, 600, and 700°C respectively. At 500°C different Cl− concentrations, pressures, and additional buffers in the Fe-Cu-S-O system were investigated. Pb and Zn concentrations at 500°C and 1 kb on po-py-mt in a system containing galena, sphalerite, molybdenite, silver sulfide and chalcopyrite, were both about 2,450 ± 500 ppm, and Fe was decreased to about 4,100 ppm. Cu, Mo and Ag were present in very low to trace concentrations, on the order of 10 to 100 ppm. Major controls on mineral solubilities are total chloride and pressure, as well as temperature. Although the data show considerable variation, at 2 m Cl−, 500°C and 1 kb, Fe concentration is increased to approximately 20,000 ppm in the pure Fe system. Similarly, at 1 m Cl and 2 kb it is decreased to about 1,700 ppm and at 0.5 kb it is increased to about 14,000 ppm. Similar relations were observed for Pb and Zn.
Keywords
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.
Access this chapter
Tax calculation will be finalised at checkout
Purchases are for personal use only
Author information
Authors and Affiliations
Editor information
Editors and Affiliations
Rights and permissions
Copyright information
© 1987 D. Reidel Publishing Company
About this chapter
Cite this chapter
Hemley, J.J., Cygan, G.L., d’Angelo, W.M. (1987). Sulfide Solubilities in Buffered Systems from 400 to 600°C and 0.5 to 2 Kb and Depositional Implications. In: Helgeson, H.C. (eds) Chemical Transport in Metasomatic Processes. NATO ASI Series, vol 218. Springer, Dordrecht. https://doi.org/10.1007/978-94-009-4013-0_29
Download citation
DOI: https://doi.org/10.1007/978-94-009-4013-0_29
Publisher Name: Springer, Dordrecht
Print ISBN: 978-94-010-8280-8
Online ISBN: 978-94-009-4013-0
eBook Packages: Springer Book Archive