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Minor and trace elements in bornite and associated Cu-(Fe)-sulfides: a LA-ICP-MS study


Cook, NJ and Ciobanu, CL and Danyushevsky, LV and Gilbert, S, Minor and trace elements in bornite and associated Cu-(Fe)-sulfides: a LA-ICP-MS study, Geochimica Et Cosmochimica Acta, 75, (21) pp. 6473-6496. ISSN 0016-7037 (2011) [Refereed Article]

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DOI: doi:10.1016/j.gca.2011.08.021


In situ laser ablation inductively-coupled mass spectroscopy (LA-ICP-MS) has been used to provide a baseline dataset on the minor element contents in hypogene bornite and accompanying Cu-sulfides from 12 deposits with emphasis on syn-metamorphic Cu–vein systems in Norway, and skarn, porphyry and epithermal systems in SE Europe. Bornite contains significant concentrations of both Ag and Bi, especially in the vein and skarn deposits studied and has the potential to be a major Ag-carrier in such ores. Concentrations of up to >1 wt.% of both elements are documented. Measured concentrations appear to be independent of whether discrete Ag- and/or Bi-minerals are present within the analyzed sulfide. Where bornite and chalcocite (or mixtures of Cu-sulfides) coexist, Ag is preferentially partitioned into chalcocite over co-existing bornite and Bi is partitioned into the bornite. Bornite is a relatively poor host for Au, which mimics Ag by being typically richer in coexisting chalcocite. Most anomalous Au concentrations in bornite can be readily tracked to micron- and submicron-scale inclusions, but bornite and chalcocite containing up to 3 and 28 ppm Au in solid solution can be documented. Selenium and Te concentrations in bornite may be as high as several thousand ppm and correlate with the abundance of selenides and tellurides within the sample. Selenium distributions show some promise as a vector in exploration, offering the possibility to track a fluid source. Bornite and chalcocite are poor hosts for a range of other elements such as Co, Ni, Ga and Ge, etc. which have been reported to be commonly substituted within sulfides. Hypogene bornite and chalcocite may have significantly different trace element geochemical signatures from secondary (supergene) bornite.

Item Details

Item Type:Refereed Article
Keywords:borenite, copper, silver, sulfide, ore deposit, Indonesia
Research Division:Earth Sciences
Research Group:Geology
Research Field:Resource geoscience
Objective Division:Mineral Resources (Excl. Energy Resources)
Objective Group:Mineral exploration
Objective Field:Copper ore exploration
UTAS Author:Danyushevsky, LV (Professor Leonid Danyushevsky)
UTAS Author:Gilbert, S (Ms Sarah Gilbert)
ID Code:74859
Year Published:2011
Web of Science® Times Cited:108
Deposited By:Centre for Ore Deposit Research - CODES CoE
Deposited On:2011-12-14
Last Modified:2012-11-12
Downloads:10 View Download Statistics

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