2015, Volume 17, Issue 2
Strategic Study of CAE >> 2015, Volume 17, Issue 2
The theory on small intrusions forming large deposits and its exploration significance—Taking for magmatic Ni-Cu sulfide deposits example in the northwestern of China
MLR Key Laboratory for the Study of Focused Magmatism and Giant Ore Deposits, Xi'an Center of Geological Survey, CGS, Xi'an 710054, China
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Abstract
The theory on small intrusions forming large deposits put forward by academician Zhongli Tang was a recapitulative summary by Long-term studying of magmatic Ni-Cu sulfide deposits which related to mafic-ultramafic intrusions. And this theory got a common response by exploration industry in the world. Many mineral exploration practices have effectively illustrated that the hypabyssal and small intrusion could always form the larger ore deposits. Our study is about the mineralization of Ni-Cu sulfide deposits which related to mafic-ultramafic intrusions in the northwestern of China. In this paper，we have discussed the theory of small intrusions forming large deposits，considering that mantle magma deep part liquation and injection is the main mechanism of this theory. And another theory of magma conduit systems，may cause the local enrichment of mineral，and like that theory of small intrusions forming large deposits. After summarizes the prospecting fact of magmatic Ni-Cu sulfide deposits in the northwestern of China，we expand the scientific connotation of the theory on small intrusions forming large deposits，and make it more realistic meaningful in guiding prospecting.
Keywords
mafic-ultramafic intrusions ; magmatic Ni-Cu sulfide deposits ; small intrusions forming large deposits ; ore genesis ; prospecting potential
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References
[ 1 ] 李文渊，张照伟，高永宝，等. 对小岩体成矿的认识及其成矿意 义[J]. 西北地质，2012，45（4）：61-68.
[ 2 ] 汤中立，李文渊. 金川硫化铜镍（含铂）矿床成矿模式及地质对 比[M]. 北京：地质出版社，1995.
[ 3 ] Maier W D，Groves D I. Temporal and spatial controls on the formation of magmatic PGE and Ni-Cu deposits [J]. Miner Deposita，2011，46：841-857. link1
[ 4 ] Zhang Zhaowei，Li Wenyuan，Gao Yongbao，et al. Sulfide mineralization associated with arc magmatism in the Qilian Block， western China：Zircon U- Pb age and Sr- Nd- Os- S isotope constraints from the Yulonggou and Yaqu gabbroic intrusions [J]. Mineralium Deposita，2014，49（2）：279-292. link1
[ 5 ] 夏林圻，夏祖春，徐学义，等. 天山石炭纪大火成岩省与地幔柱 [J]. 地质通报，2004，23（9-10）：903-910. link1
[ 6 ] Zhao T P，Zhou M F. Geochemical constrains on the tectonic setting of Paleoproteroaoic A-type granites in the southern margin of the North China Craton [J]. J Asian Earth Sci，2009，36：183- 195. link1
[ 7 ] Griffin W L，Begg G C，O’Reilly S Y. Continental-root control on the genesis of magmatic ore deposits [J]. Nature Geoscience， 2013，6：905-910. link1
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