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通过2009年西安Ni-Cu(Pt)岩浆矿床国际学术研讨会和近10年来的勘查研究现状,可以看出岩浆硫化物矿床勘查领域的发展趋势为:与大型层状岩体有关的铂族矿床仍然受到关注;Sudbury矿床的特殊性和不可参照性取得了共识;小岩体矿床是勘查研究的主流;通道成矿作用受到重视。以大型层状岩体Bushveld为例,介绍了其中的Merensky矿层、UG-2矿层和北翼接触带的Platreef矿床。由于中国没有发现这种大型层状岩体,因此应当重视那些中小型层状岩体中可能赋存的铂族矿床。迄今为止,除了Sudbury矿床这个特殊的实例之外,国内外所有具有经济意义的Ni-Cu矿床都寄生于小岩体中并自成一个成矿系统。这个小岩体成矿系统包含成矿背景、邻近深大断裂、原始岩浆、先导性岩浆成岩作用、继发性岩浆成矿作用以及深部熔离-分期贯入-终端岩浆房聚集成矿等。近10年的勘查实践进一步说明,这类小岩体矿床仍是中国今后的主要勘查研究方向。最后,介绍了Noril sk-Talnakh和Voisey s Bay矿床的深部熔离-通道成矿机制,这种机制增添了小岩体成矿作用的多样性;但是,其现存空间是开放性岩浆通道还是封闭性终端岩浆房,还有待更多的研究和实践。
Based on the 2009 Xi’an Ni-Cu (Pt) magmatic deposit international academic symposium and the recent 10 years of exploration and research status, we can see that the trend of exploration in the magmatic sulfide deposit area is as follows: the platinum group deposit related to large layered rock mass Still attracting attention; the particularity and irreducibility of the Sudbury deposit have reached a consensus; the small rock deposit is the mainstream of exploration; and the channel mineralization has received great attention. Take the large layered rock mass, Bushveld, as an example, the Platreef deposit in which the Merensky, UG-2 and North-wing contact zones are described. Since China does not find such a large layered rock mass, it is important to pay attention to the possible occurrence of the platinum-bearing mineral deposits in the small and medium-sized layered rock mass. So far, except for the special case of the Sudbury deposit, all economically important Ni-Cu deposits at home and abroad have been parasitized in small rock mass and formed into a metallogenic system. This small rock metallogenic system includes the metallogenic background, adjacent to deep faults, primitive magma, diagenesis of leading magmatism, secondary magmatic mineralization, and deep melting-staging-terminal magmatic chamber. Nearly 10 years of exploration practice further shows that such small rock deposits are still China’s future major exploration direction. Finally, the deep-melt-channel mineralization mechanisms of the Noril sk-Talnakh and Voisey s Bay deposits are introduced, which add to the diversity of mineralization of small rocks; however, whether the existing space is an open magma channel or a closed Sexual terminal magma room, still needs more research and practice.