金宝山铂-钯矿和力马河镍矿的硫同位素组成特征及地质意义
The Sulfur Isotopic Characteristics and Geological Significance of Jinbaoshan Pt-Pd Deposit and Limahe Nickel Deposit
查看参考文献19篇
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文摘
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金宝山铂钯矿和四川力马河镍矿是峨眉山大火成岩省内两个重要的Ni-Cu-PGE硫化物矿床,但二者矿化特征明显不同,前者贫铜、镍,富铂、钯,硫化物含量低,呈浸染状;后者贫铂族元素,富含硫化物,矿石以陨铁状或块状为主.本文以两矿床成矿元素组成的变化和矿石结构类型的显著差异为出发点,系统分析了硫化物的硫同位素,发现金宝山铂-钯矿的硫化物δ~(34)S值(0.6‰～2.8‰)略高于地幔硫(0±2‰),显示有微弱的地壳物质混染,而力马河镍矿的硫化物δ~(34)S值(2.4‰～5.4‰)显著高于金宝山铂-钯矿,反映受地壳混染程度较高;指出成矿岩浆演化过程中地壳混染程度上的差异,可能是造成峨眉山大火成岩省岩浆Ni-Cu-PGE矿床矿化类型不同的重要原因. |
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其他语种文摘
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The Jinbaoshan Pt-Pd deposit and Limahe nickel deposit are two important Ni-Cu-PGE sulfide deposits in the Emeishan Large Igneous Province (ELIP), SW China. The two deposits have very distinctive mineralization characteristics that the Jinbaoshan deposit enriched Pt and Pd but depleted Cu and Ni, and contained low content of disseminated sulfides; while the Limahe deposit depleted PGE and enriched troilite-like or massive sulfide ores. The objective of this study is to explore the large variations of ore-forming elements and texture types of ores by the means of analyzing S isotopic compositions of the sulfide ores. The sulfide ores in Jinbaoshan have a restricted range of δ~(34)S values from +0.6‰ to +2.8‰ slightly higher than the range of 0±2.4‰ which is considered to be normal for sulfur of mantle derivation. These values indicate that the ore-forming magma experienced a weak contamination of crustal material. Compared with the Jinbaoshan deposit, the Limahe deposit has higher δ~(34)S values from +2.4‰ to+5.4‰ which are significantly higher than the corresponding values of Jinbaoshan deposit. It indicates that the ore-forming magma of Limahe experienced a larger degree of contamination from the crustal material. As a result, the difference degrees of crustal material contamination during the evolution of ore-forming magma may be one important reason for the variations of mineralization types of magmatic Ni-Cu-PGE deposits in the ELIP. |
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来源
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矿物岩石地球化学通报
,2009,28(2):123-127 【扩展库】
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关键词
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硫同位素
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岩浆Ni-Cu-PGE矿床
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地壳混染
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金宝山铂钯矿
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力马河镍矿
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地址
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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, 贵州, 贵阳, 550002
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安徽理工大学, 安徽, 淮南, 232001
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语种
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中文 |
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文献类型
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研究性论文 |
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ISSN
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1007-2802 |
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学科
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地质学 |
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基金
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国家自然科学基金
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中国科学院知识创新工程重要方向项目
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文献收藏号
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CSCD:3597220
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参考文献 共
19
共1页
|
|
1.
Tao Y. Petrogenesis of the Pt-Pd mineralized Jinbaoshan ultramafic intrusion in the Permian Emeishan Large Igneous Province,SW China.
Contributions to Mineralogy and Petrology,2007,153:321-337
|
被引
35
次
|
|
|
|
|
2.
陶琰. 四川力马河镁铁超镁铁质岩体的地球化学特征及成岩成矿分析.
岩石学报,2007,23(11):2785-2800
|
被引
31
次
|
|
|
|
|
3.
邓家藩. 云南硫化物型铜镍和铂族矿床.
云南地质,1999,18(1):22-35
|
被引
10
次
|
|
|
|
|
4.
陶琰. 云南金宝山超镁铁岩体锆石SHRIMP年龄.
科学通报,2008,53(22):2828-2832
|
被引
22
次
|
|
|
|
|
5.
Zhong H. Geochronology of layered mafic intrusions from the Pan-Xi area in the Emeishan Large igneous province,SW China.
Mineral Deposits,2006,41:599-606
|
被引
1
次
|
|
|
|
|
6.
Zhou M F. Zircon U-Pb geochronology and elemental and Sr-Nd geochemistry of Permian mafic rocks in the Funing area,SW China.
Contributions to Mineralogy and Petrology,2006,151:1-19
|
被引
72
次
|
|
|
|
|
7.
陶琰. 金宝山铂族元素矿床铂族元素的热液活动研究.
矿物岩石地球化学通报,2003,22(1):32-37
|
被引
16
次
|
|
|
|
|
8.
王生伟. 云南金宝山和白马寨铜镍硫化物矿床铂族元素(PGE)地球化学的差异及其成因意义.
地质学报,2007,81(1):1-16
|
被引
4
次
|
|
|
|
|
9.
Xu Y G. Geologic,geochemical,and geophysical consequences of plume involvement in the Emeishan flood basalt province.
Geology,2004,32:917-920
|
被引
173
次
|
|
|
|
|
10.
陶琰. 力马河镍矿Re-Os同位素研究.
地质学报,2008,82(9):1292-1304
|
被引
14
次
|
|
|
|
|
11.
Zhou M F. Geochemistry,petrogenesis and metallogenesis of the Panzhihua gabbroic layered intrusion and associated Fe-Ti-V oxide deposit,Sichuan Province,SW China.
Journal of Petrology,2005,46:2253-2280
|
被引
134
次
|
|
|
|
|
12.
胡瑞忠. 地幔柱成矿系统:以峨眉山地幔柱为例.
地学前缘,2005,12(1):42-54
|
被引
70
次
|
|
|
|
|
13.
Zhou M F. Two magma series and associated ore deposit types in the Permian Emeishan large igneous province,SW China.
Lithos,2008,103(34):352-368
|
被引
110
次
|
|
|
|
|
14.
姚家栋.
西昌地区硫化铜(铂)镍矿床成因,1986:62-73
|
被引
1
次
|
|
|
|
|
15.
Ripley E M. Mineralogic and stable isotopic studies of hydrothermal alteration at the Jinchuan Ni-Cu deposit.
Economic Geology,2005,100:1349-1361
|
被引
30
次
|
|
|
|
|
16.
Li C. Empirical equations to predict the sulfur content of mafic magma at sulfide saturation and applications to magmatic sulfide deposits.
Mineralium Deposita,2005,40:218-230
|
被引
15
次
|
|
|
|
|
17.
Li C. Sulfur concentration at sulfide or sulfate saturation in silicate melts:Empirical models and selected applications.
Geochimica Et Cosmochimica Acta,2007,71:1783-1799
|
被引
1
次
|
|
|
|
|
18.
Ripley E M. Sulfur isotopic studies of the Dunka Road Cu-Ni deposit,Duluth intrusion,Minnesota.
Economic Geology,1981,76:610-620
|
被引
6
次
|
|
|
|
|
19.
Andrews M S. Mass transfer and sulfur fixation in the contact aureole of the Duluth Complex,Dunka-Road Cu-Ni deposit,Minnesota.
Canadian Mineralogist,1989,27:293-310
|
被引
5
次
|
|
|
|
|
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