Sulfur isotope systematics of copper ore formation at Mount Isa, Australia

A. S. Andrew, C. A. Heinrich, R. W T Wilkins, D. J. Patterson

Research output: Contribution to journalArticlepeer-review

28 Citations (Scopus)


The copper ores at Mount Isa (Queensland) are hosted by the Urquhart Shale, a metamorphosed Proterozoic sequence of dolomitic siltstones and shales. Sulfur isotope data from copper ores and their hosts suggest that the highly pyritic Urquhart Shale provided a major sulfur component to the copper ores and also that variable contributions from an 34S-enriched source have been added along with copper by the hydrothermal brine. The ratio of sedimentary-diagenetic sulfur to introduced sulfur is poorly constrained because of the probable isotopic heterogeneity of the sedimentary-diagenetic pyrite at the onset of copper mineralization. The isotopic evidence for large-scale incorporation of sedimentary sulfide sulfur into the epigenetic copper ores is consistent with the suggestion that the sulfides in the replaced metasediments were an important ingredient in the chemical trap that contributed to the localization of the copper ores at Mount Isa. -Authors

Original languageEnglish
Pages (from-to)1614-1626
Number of pages13
JournalEconomic Geology
Issue number6
Publication statusPublished - 1989
Externally publishedYes


Dive into the research topics of 'Sulfur isotope systematics of copper ore formation at Mount Isa, Australia'. Together they form a unique fingerprint.

Cite this