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矿床地质  2013 

肖家营子钼铁矿床成矿物质来源——来自PGE元素和S同位素的证据

Keywords: 地球化学,硫化物,PGE,成矿物质来源,肖家营子

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Abstract:

肖家营子矿床是一个与细粒闪长岩有关的矽卡岩型钼铁矿床。采用ICP-MS法对该矿床主要矿石矿物和围岩中的铂族元素进行分析表明:PGE元素在不同矿物中的含量变化较大,在辉钼矿和黄铁矿中比较富集,而在磁铁矿、石榴子石及细粒闪长岩、白云岩中则含量较低,这与PGE趋向在硫化物中富集的行为有关。不同矿物或岩石的原始地幔标准化曲线呈似W型,显示出Ir和Pt负异常,Ru正异常。辉钼矿和黄铁矿中的PGE分异较明显,具有相似的配分模式;磁铁矿、石榴子石、细粒闪长岩和白云岩内的PGE分异不明显,具有相近的IPGE配分模式。硫同位素分析结果显示,多数硫化物的δ34S值为3‰~5‰,与赋矿细粒闪长岩的δ34S值(1.1‰~3.5‰)较相似。PGE和硫同位素分析表明,肖家营子矿床不同成矿阶段成矿物质的来源不同,矽卡岩阶段的成矿物质主要来自细粒闪长岩和白云岩,热液硫化物阶段的成矿物质不全是来自细粒闪长岩和白云岩,还可能有壳幔混源物质的加入。

References

[1]  敖颖锋,国铁成,袁国平. 2001. 肖家营子斑岩体地质特征及找矿标志[J]. 矿 产与地质,15(4):233-237.
[2]  储雪蕾,孔 敏,周美夫. 2001. 化学地球动力学中的铂族元素地球化学[J]. 岩石学报,17(1):112-122.
[3]  储雪蕾,孙 敏,周美夫. 2002. 内蒙古林西大井铜多金属矿床矿石的铂族元素分布及物质 来源[J]. 科学通报,47(6):457-461.
[4]  代军治,毛景文,杜安道,谢桂青,白 杰,杨富全,屈文俊. 2007. 辽西肖家营子钼(铁) 矿床Re-Os年龄及其地质意义[J]. 地质学报,81(7):917-923.
[5]  代军治,毛景文,赵财胜,李福让,王瑞廷,谢桂青,杨富全. 2008. 肖家营子矽卡岩型钼 (铁)矿床高盐度流体及其演化[J]. 岩石学报,24(9):2124-2132.[LL] 黄典豪,杜安道,吴澄宇,刘兰笙,孙亚莉,邹晓秋. 1996. 华北地台钼(铜)矿铼-锇年 龄及其地质意义[J]. 矿床地质,15(4):289-297.
[6]  康书泽. 1979. 辽宁省喀左县肖家营子钼多金属矿床第一期地质勘探报告[R]. 朝阳: 辽 宁朝阳地质勘查院. 24-38.
[7]  李胜荣,高振敏,陈南生. 1994. 试论铂族元素地球化学示踪体系[J]. 矿物岩石地球化 学通讯,(1):36-37.
[8]  李晓峰,华仁民,毛景文. 2002. 江西金山金矿成矿物质来源的铂族元素证据[J]. 地质 与勘探,38(6):13-16.
[9]  马建德,徐天波,敖颖峰,李祥才,张志伟,国铁成. 2002. 辽宁肖家营子钼多金属矿床地 质特征及成因[J]. 桂林工学院学报,22(1):5-10.
[10]  权 恒,韩庆云,艾永富,林彦春,魏菊英. 1992. 燕辽地区多金属、金、银成矿与远景[M]. 北京:地质出版社. 134页.
[11]  孙晓明,石贵勇,熊德信,王生伟,翟 伟,屈文俊,杜安道. 2007. 云南哀牢山金矿带大 坪金矿铂族元素(PGE)和Re-Os同位素地球化学及其矿床成因意义[J]. 地质学报,81(3): 394-404.
[12]  鄢明才,迟清华. 1997. 中国东部地壳与岩石的化学组成[M]. 北京:科学出版社. 11-15 5.
[13]  Barnes S, Naldrett A J and Gorton M P. 1985. The origin of the fraction of plati num group elements in terrestrial magmas[J]. Chemical Geology, 53: 303-323.
[14]  Berzina A N, Sotnikov V I, Economou-Eliopoulos M and Demetrios G E. 2005. Distri bution of rhenium in molybdenite from porphyry Cu-Mo and Mo-Cu deposits of Russi a (Siberia) and Mongolia[J]. Ore Geology Reviews, 26: 91-113.
[15]  Berzina A N and Korobeinikov A F. 2007. Rhenium and precious metal (Pt, Pd and A u) abundances in porphyry Cu-Mo deposits of central-Asian Mobile Belt[J]. Acta Petrologica Sinica, 23(8): 1957-1972.
[16]  Dai J Z, Mao J W, Zhao C S, Xie G Q, Yang F Q and Wang Y T. 2009. New U-Pb and R e-Os age data and the geodynamic setting of the Xiaojiayingzi Mo (Fe) deposit, w estern Liaoning Province, Northeastern China[J]. Ore Geology Reviews, 35: 235-244.
[17]  Garuti G, Fershtater G, Bea F, Montero P, Pushkarev E V and Zaccarini F. 1997. P latinum-group elemens as petrological indicators in mafic-ultramafic complexs of the central and southern Ural: Preliminary results[J]. Tectonophysics, 276: 1 81-194.
[18]  McDonough W F and Sun S S. 1995. The composition of the Earth[J]. Chemical Geo logy, 120: 223-25.
[19]  Naldrett A J, Hoffman E L, Green A H, Chou C L and Naldrett S R. 1979. The compo sition of Ni-sulfide ores, with particular reference to their content of PGE and Au[J]. Canadian Miniral., 17: 403-415.
[20]  Ohmoto H and Goldhaber M B. 1997. Sulfur and carbon isotopes[A]. In: Barnes H L, ed. Geochemistry of hydrothermal ore deposits (3rd edition)[C]. New York: Joh n Wiley and Sons. 517-611.
[21]  更多...
[22]  Sotnikov V I, Berzina A N, Economou-Eliopoulos M and Eliopoulos D G. 2001. Palla dium, platinum and gold distribution in porphyry Cu-Mo deposits of Russia and Mo ngolia[J]. Ore Geology Reivews, 18: 95-111.
[23]  Zhou M F, Robinson P T, Malpas J and Li Z. 1996. Podiform chromitites in the Luo busa ophiolite (Southern Tibet): Implications for melt-rock interaction and chro mite segregation in the upper mantle[J]. J. Petrol., 37: 3-21.
[24]  Zhou M F, Sun M, Keays R R and Kerrich R W. 1998. Controls on platinum-group ele mental distributions of podiform chromitites: A case study of high-Cr and high-A l chromitites from Chinese orogenic belts[J]. Geochim. Cosmochim. Acta, 62: 67 7-688.

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