| 硫化物熔离对岩浆硫化物含矿岩体中橄榄石Ni含量的影响——以金川岩体为例 |
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| 引用本文： | 李士彬,胡瑞忠,宋谢炎,陈烈锰,沈能平.硫化物熔离对岩浆硫化物含矿岩体中橄榄石Ni含量的影响——以金川岩体为例[J].矿物岩石地球化学通报,2008,27(2). |
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| 作者姓名： | 李士彬 胡瑞忠 宋谢炎 陈烈锰 沈能平 |
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| 作者单位： | 1. 中国科学院,地球化学研究所,矿床地球化学国家重点实验室,贵阳,550002;中国科学院,研究生院,北京,100049
2. 中国科学院,地球化学研究所,矿床地球化学国家重点实验室,贵阳,550002 |
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| 基金项目： | 国家自然科学基金，中国科学院知识创新工程项目，中国科学院"百人计划"，国家重点基础研究发展计划(973计划) |
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| 摘 要： | 为探讨硫化物熔离对含矿岩体中橄榄石Ni含量的影响，在前人橄榄石结晶硫化物熔离模型的基础上，定量模似计算了分离结晶过程中橄榄石Ni含量，并将其应用于金川橄榄石成园研究。研究表明，部分橄榄石落于无硫化物熔离橄榄石结晶趋势线下方，暗示其母岩浆为S饱和。根据模拟计算S饱和母岩浆橄榄石分离结晶趋势线，指出金川深部岩浆房中母岩浆橄榄石的分离结晶程度小于或等于3％，而由橄榄石结晶所导致熔离的硫化物熔体与橄榄石之间质量比约为40。
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| 关 键 词： | 金川 铜镍硫化物矿床 硫化物熔离 橄榄石Ni含量 |
Sulfide Separation Control in Ni Content of Olivine in Bearing-ore Intrusion of Magma Deposit: An Example from Jinchuan Intrusion |
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| LI Shi-bin,HU Rui-zhong,SONG Xie-yan,CHEN Lie-meng,SHEN Neng-ping.Sulfide Separation Control in Ni Content of Olivine in Bearing-ore Intrusion of Magma Deposit: An Example from Jinchuan Intrusion[J].Bulletin of Mineralogy Petrology and Geochemistry,2008,27(2). |
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| Authors: | LI Shi-bin HU Rui-zhong SONG Xie-yan CHEN Lie-meng SHEN Neng-ping |
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| Abstract: | In light of former model of olivine fractionation and sulfide molten from magma,we simulated magma differentiation in the processes olivine separation and sulfide molten from silicate magma,and studied the effect of sulfide separation to Ni content in olivine,and studied the genesis of Jinchuan olivine.The results showed that parts of Jinchuan olivine components located below the fractional crystallization line of olivine with no sulfide separation,indicating the parental magma of Jinchuan olivine is sulfide-saturated.By elaborated analyzing the simulation of fractional crystallization line of olivine with sulfide separation,we believed less than 3%(wt) fractional crystallization of olivine was separated from magma and believed the mass ratio of sulfide removed from silicate magma to olivine was about 40 in a staging magma chamber. |
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| Keywords: | Jinchuan Cu-Ni sulfide deposit sulfide separation Ni content in olivine |
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