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中文摘要：
<正>在多数大型、超大型岩浆型铜镍硫化物矿床中,矿体主要以岩浆就地熔离型、深部熔离-贯入型为主的成矿方式,这类矿体品位高,储量大,是工业上利用最多的矿体。但铜镍硫化物矿床中,矽卡岩型和热液叠加的矿体也是存在的,比如金川矿床,除就地熔离型和深部熔离-贯入型矿体外,还存在着热液叠加改造的阶段(汤中立等,2006),有时这种热液中的PGE元素非常高,如金川热液叠加的矿石中(Pt+Pd)/(Os+Ir+Ru)值达735,比其它类型矿石高两个数量级(苏昌学,2009),虽然这个阶段的矿体规模并不大,
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