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拉脊山位于青海省东部中、南祁连之间,为一条发育于晋宁期基底之上、围限于拉脊山南、北断裂的加里东期构造带(邱家骧等,1997),属祁连成矿省之拉鸡山镍、钴、金、稀土、磷成矿带。其中广泛出露蛇绿岩组合(邓清禄等,1995;邱家骧等,1998;杨巍然等,2000)基性火山岩及超基性岩。与超基性岩有关的代表性矿产为上庄磷铁稀土矿床和元石山大型铁钴镍矿床,以往的找矿定位于铬、铂族、磷灰石及镍矿(西北地质科学研究所,1974),但多年来除镍外找矿效果不明显。矿床超基性岩
Located in the middle and southern Qilian Mountains in eastern Qinghai Province, Lajishan is a Caledonian structural belt (Qiu et al., 1997), which is confined to the southern and northern parts of Lajishan. It belongs to Qilian metallogenic province The pull Jishan nickel, cobalt, gold, rare earth, phosphorus metallogenic belt. Among them, the ophiolite assemblage (Deng Qinglu et al., 1995; Qiu Jialiu et al., 1998; Yang Weiran et al., 2000) is widely exposed as basic volcanic rocks and ultramafic rocks. Representative minerals related to ultramafic rocks are the Shangzhuang phosphorite-bearing rare earth deposits and the Yuanshi Mountain large-scale Fe-Co-Ni deposits. The former ore-prospecting was located in the chromium, platinum group, apatite and nickel ore (Northwestern Institute of Geological Sciences, 1974 ), But over the years in addition to find the effect of ore is not obvious outside. Ultrabasic rocks