Quick Search:    advanced search

GSW Home   GeoRef Home   My GSW Alerts   Contact GSW   About GSW   Journals List   Help

This Article Figures Only Full Text Full Text (PDF) Alert me when this article is cited Alert me if a correction is posted Citation Map Services Email this article to a friend Similar articles in this journal Similar articles in Web of Science Alert me to new issues of the journal Download to citation manager Citing Articles Citing Articles via HighWire Citing Articles via Web of Science (7) Citing Articles via Google Scholar Google Scholar Articles by Fleet, M. E. Search for Related Content GeoRef GeoRef Citation

Phase Equilibria at High Temperatures

Department of Earth Sciences, University of Western Ontario, London, Ontario N6A 5B7, Canada, e-mail: mfleet@uwo.ca

The first 20% of the full text of this article appears below.

	INTRODUCTION

 
The wide variety of metal sulfide structures and their accommodation of atomic substitution, non-stoichiometry and metal-metal (M-M) and ligand-ligand interactions allows for diverse physical, chemical and electronic properties. The energy band structure of 3d transition-metal sulfides, in particular, is strongly influenced by the covalence of metal-S bonds, which results in hybridization of S 3p and metal 3d bonding states and direct or indirect M-M bonding interactions in favorable cases. Differences in the phase relations of isostructural metal sulfides are often attributable to subtle changes in electronic states. The literature on metal sulfide phase relations relevant to the earth sciences is very extensive and could not possibly be summarized in a single chapter. Therefore, following Craig and Scott (1974), this chapter focuses on the base metal (Fe, Co, Ni, Cu, and Zn) sulfides, with the literature for other metal chalcogenides and pnictides and some sulfosalts summarized in a single table (Table 1). The relevant phase relations of the platinum-group element (PGE) chalcogenides and pnictides have been comprehensively reviewed in Makovicky (2002). A section on the halite structure sulfides (niningerite, alabandite and oldhamite) is also included in this chapter. The material presented here relates closely to that discussed in other chapters, in particular the chapter on sulfide thermochemistry (Sack and Ebel 2006). The importance of understanding phase equilibria in the context of electronic and magnetic properties and, hence, electronic structure is also emphasized, thereby reinforcing material presented in several other chapters (Pearce et al. 2006; Vaughan and Rosso 2006).

This article has been cited by other articles:

				V. Ettler, Z. Johan, P. Bezdicka, M. Drabek, and O. Sebek Crystallization sequences in matte and speiss from primary lead metallurgy European Journal of Mineralogy, August 1, 2009; 21(4): 837 - 854. [Abstract] [Full Text] [PDF]

				E. Makovicky Crystal Structures of Sulfides and Other Chalcogenides Reviews in Mineralogy and Geochemistry, January 1, 2006; 61(1): 7 - 125. [Full Text] [PDF]

				C. I. Pearce, R. A.D. Pattrick, and D. J. Vaughan Electrical and Magnetic Properties of Sulfides Reviews in Mineralogy and Geochemistry, January 1, 2006; 61(1): 127 - 180. [Full Text] [PDF]

				P. L. Wincott and D. J. Vaughan Spectroscopic Studies of Sulfides Reviews in Mineralogy and Geochemistry, January 1, 2006; 61(1): 181 - 229. [Full Text] [PDF]

				D. J. Vaughan and K. M. Rosso Chemical Bonding in Sulfide Minerals Reviews in Mineralogy and Geochemistry, January 1, 2006; 61(1): 231 - 264. [Full Text] [PDF]

				R. O. Sack and D. S. Ebel Thermochemistry of Sulfide Mineral Solutions Reviews in Mineralogy and Geochemistry, January 1, 2006; 61(1): 265 - 364. [Full Text] [PDF]