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This paper would first present the distribution of minor and trace elements in the Cu-Fe-S minerals in the deposits of Zijinshan orefield by using EPMA and LA-ICP-MS micro-analysis. The results show copper minerals from the upper Zijinshan open-pit have the distinct high Se contents, of which covellite develops the good shape of selenium zoning with the highest Se of 1.57%. LA-ICP-MS micro-analysis showed that the digenite and djurleite contain significant concentration of Au (>1×10-6) and Ag, and are the major gold-carrier, in which also have different trace element signatures with significant concentration of Bi, Se, and Sn compared to the secondary digenite. Bornite is the major carriers of silver and bismuth in Zijinshan orefield, and contanins alternative concentration of Bi and Ag in different mineralized stage. Bornite contains higher Bi and less Ag and Sn in the high sulfidation stage when compared to the low-middle sulfidation stage. Chalcopyrite contains less Ag but highest In contents (~30×10-6), is the major indium-carrier. Besides, ore minerals in Zijinshan orefield all contain significant concentration of Se, Te, Ge and As, which implies that the mineralization in Zijinshan district was intimately related to the volcanism. The occurrence of anomalous zone of W, Sn, Mo, Bi and In in Zijinshan orefield is a potential geochemical indicator of transition between porphyry and high sulfidation mineralization, which indicates a porphyry mineralization in the depth of Zijinshan. © 2017, Editorial Office of Earth Science Frontiers. All right reserved.
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Earth Science Frontiers
ISSN: 1005-2321
CN: 11-3370/P
Year: 2017
Issue: 5
Volume: 24
Page: 39-53
Cited Count:
SCOPUS Cited Count: 6
ESI Highly Cited Papers on the List: 0 Unfold All
WanFang Cited Count:
Chinese Cited Count:
30 Days PV: 3
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