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| Significance of Conduit of Sulfide-Bearing Magma for Exploration of Magmatic Sulfide Deposit |
| SONG Xie-yan1, LI Shi-bin1,2, WANG Yu-shan3, BA Duo-heny3, CHEN Lie-meng1,2 |
1. Key Lah. Ore Deposit Geochemistry, Institute of Geochemistry, Chinese Academy of Sciences, Guiyang 550002, China;
2. Graduate School, Chinese Academy of Sciences, Beijing 100039, China;
3. Jinchuan Group-LTD., Jinchang, Gausu 737100, China |
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Abstract Magmatic Ni-Cu sulfide deposits formed by "injecting of sulfide-bearing magmas segregated at depth"are hosted in intrusions with high proportions of sulfide ores. The lithologic variations and distribution of sulfide orebodies in the intrusions are inconsistent with model of in-situ magmatic fractionation and sulfide segregation. Many such deposits had been identified in China. However, corresponding method for further exploration of the ore bodies in depth in these deposits has not been developed well. In this paper, we summarized marked geological features of this type of deposits in China, including the Jinchuan deposit. Exploration of the Voisey's Bay super-large Cu-Co-Ni sulfide deposit in Canada, which is genetically similar to the Jinchuan deposit, was described. We proposed that it is potential to prospect new ore-bodies along sulfide-bearing magma conduit at depth. We also presented method prospecting new ore bodies along the conduit of sulfide-bearing magmas in the Jinchuan deposit.
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Received: 01 July 2005
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