The surface properties of bornite.

D. J. Vaughan, J. A. Tossell, C. J. Stanley

Research output: Contribution to journalArticlepeer-review


The surfaces of fresh and tarnished bornite (Cu5FeS4) have been studied by measurement of reflectance and quantitative colour parameters in the visible region, X-ray photoelectron and Auger electron spectroscopy, and conversion electron Mossbauer spectroscopy. The tarnish is shown to be due to a surface coating of an iron hydroxy-oxide, leaving beneath it a layer with a copper sulphide composition, possibly due to metals in trigonal planar coordination resulting in destabilization of Fe3+ relative to Cu+, thus accounting for its preferential oxidation. -R.A.H.

Original languageEnglish
Pages (from-to)285-293
Number of pages9
JournalMineralogical Magazine
Issue number2
Publication statusPublished - 1987


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