Received date: 2011-08-12
Revised date: 2012-02-15
Online published: 2012-04-10
In view of the confusion in dating the metallic ore deposit, many mineralogists and isotopic geochemists have carried through much useful research in the conventional isotopic dating of metal mineral, and sulfide Rb-Sr isotopic dating method displays unique predominance, especially to the Pb-Zn ore deposit whose ore minerals mainly comprise sphalerite, galena and pyrite. Combining with the dating technique research made in our laboratory in recent years, the authors have sums up the achievements of sulfide Rb-Sr isotopic dating, Rb and Sr residence sites in sphalerite, dating mechanism, and its adaptability. The sphalerite Rb-Sr isochron arrays derive from differential partitioning of Rb and Sr between hydrothermal fluid and sphalerite, but not all sphalerites adapt to this dating technique. To succeed in obtaining ore-forming age, it is necessary to sample the representative ores combining with the geological characteristics, and to pick out the appropriate minerals based on the thorough study of the petrography and paragenesis of samples. Furthermore, the secondary fluid inclusions and clay minerals should be wiped off during the sample analysis.
Key words： Rb-Sr isotope; Dating; Sulfide; Pb-Zn deposit
Yang Hongmei，Cai Hong，Duan Ruichun，Liu Chongpeng，Zhang Liguo，Mei Yuping，Duan G . Progress in Rb-Sr Isotopic Dating of Sulfide[J]. Advances in Earth Science, 2012 , 27(4) : 379 -385 . DOI: 10.11867/j.issn.1001-8166.2012.04.0379
[1]Zhao Kuidong, Jiang Shaoyong. Direct isotope dating for metallic ore deposits[J]. Earth Science Frontiers, 2004, 11(2): 425-434.[赵葵东, 蒋少涌. 金属矿床的同位素直接定年方法[J]. 地学前缘, 2004, 11(2): 425-434.]
[2]Li Wenbo, Huang Zhilong, Xu Deru, et al. Rb-Sr isotopic method on Zinc-Lead ore deposit: A review[J]. Geotectonica et Metallogenia, 2002,26(4): 436-441.[李文博, 黄智龙, 许德如, 等. 铅锌矿床Rb-Sr定年研究综述[J]. 大地构造与成矿学, 2002,26(4)：436-441.]
[3]Reesman R H. The Rb-Sr analysis of some sulfide mineralization[J]. Earth and Planetary Science Letters, 1968, 5: 23-26.
[4]Maxwell R. A Study of Rubidium, Strontium and Strontium Isotopes in Some Mafic and Sulfide Minerals[D/OL]. England: University of British Columbia, 1976，https://circle.ubc.ca/handle/2429/20410,2011.
[5]Medford G A, Maxwell R J, Richard L A. 87Sr/86Sr ratio measurements on sulfides, carbonates and fluid inclusions from Pine Point, Northwest Territories, Canada: An 87Sr/86Sr ratio increase accompanying the mineralizing process[J]. Economic Geology 1983, 78(7): 1 375-1 378.
[6]Nakai S, Halliday A N, Kesler S E, et al. Rb-Sr dating of sphalerites from Tennessee and the genesisi of Mississippi Valley type ore deposits[J]. Nature, 1990, 346(6 369): 354-357.
[7]Brannon J C, Podosek F A, McLimans R K. Alleghenian age of the Upper Mississippi Valley zinc-lead deposit determined by Rb-Sr dating of sphalerite[J]. Nature, 1992, 356(6 369): 509-511.
[8]Nakai S, Halliday A N, Kesler S E, et al. Rb-Sr dating of sphalerites from Mississippi Valley-Type(MVT) ore deposits[J]. Geochimica et Cosmochimica Acta, 1993, 57(2): 417-427.
[9]Christensen J N, Halliday A N, Leigh K E, et al. Direct dating of sulfides by Rb-Sr: A critical test using the Polaris Mississippi Valley-type Zn-Pb deposit[J]. Geochimica et Cosmochimica Acta, 1995, 59(24): 5 191-5 197.
[10]Christensen J N, Halliday A N. Testing Models of large-scale crustal fluid using direct dating of sulfides: Rb-Sr evidence for early dewatering and formation of Mississippi Valley-type deposits, Canning Basin, Australia[J]. Economic Geology, 1995, 90(4): 877-884.
[11]Yang Jinhui, Zhou Xinhua. The Rb-Sr isochron of ore and pyrite sub-samples from Linglong gold deposit, Jiaodong Peninsula, eastern China and their geological significance[J]. Chinese Science Bulletin, 2000, 45(24): 2 272-2 277.[杨进辉, 周新华. 胶东地区玲珑金矿矿石和载金矿物Rb-Sr等时线年龄与成矿时代[J]. 科学通报, 2000, 45(14): 1 547-1 552.]
[12]Yang J H, Zhou X H. Rb-Sr, Sm-Nd, and Pb isotope systematics of pyrite: Implications for the age and genesis of lode gold deposits[J]. Geological Society of America, 2001, 29(8): 711-714.
[13]Zhang Ruibin, Liu Jianming, Ye Jie, et al. Chalcopyrite Rb-Sr isochron age dating and its ore-forming significance in Shouwangfen copper deposit, Hebei province[J]. Acta Petrologica Sinica, 2008, 24(6): 1 353-1 358. [张瑞斌, 刘建明, 叶杰, 等. 河北寿王坟铜矿黄铜矿铷锶同位素年龄测定及其成矿意义[J]. 岩石学报, 2008, 24(6): 1 353-1 358.]
[14]Wan B, Hegner E, Zhang L C, et al. Rb-Sr geochronology of chalcopyrite from the Chehugou porphyry Mo-Cu deposit(Northeast China) and geochemical constraints on the origin of hosting granites[J]. Economic Geology, 2009, 104(3): 351-363.
[15]Hou Minglan, Jiang Shaoyong, Jiang Yaohui, et al. S-Pb isotope geochemistry and Rb-Sr geochronology of the Penglai gold field in the eastern Shandong province[J]. Acta Petrologica Sinica, 2006, 22(10): 2 525-2 533.[侯明兰, 蒋少涌, 姜耀辉, 等. 胶东蓬莱金矿区的S-Pb同位素地球化学和Rb-Sr同位素年代学研究[J]. 岩石学报, 2006, 22(10): 2 525-2 533.]
[16]Yao Junming, Hua Renmin, Lin Jinfu. REE, Pb-S isotope geochemistry, and Rb-Sr isochron age of pyrites in the Baoshan deposit, South Hunan province, China[J]. Acta Geologica Sinica, 2006, 80(7): 1 045-1 054.[姚军明, 华仁民, 林锦富. 湘南宝山矿床REE、Pb-S同位素地球化学及黄铁矿Rb-Sr同位素定年[J]. 地质学报, 2006, 80(7): 1 045-1 054.]
[17]Wei J H, Liu C Q, Tang H F. Rb-Sr and U-Pb isotopic systematics of pyrite and granite in Liaodong gold province, North China: Implication for the age and genesis of a gold deposit[J]. Geochemical Journal, 2003, 37(5): 567-577.
[18]Han Yigui, Li Xianghui, Zhang Shihong, et al. Single grain Rb-Sr dating of euhedral and cataclastic pyrite from the Qiyugou gold deposit in western Henan, Central China[J]. Chinese Science Bulletin, 2007, 52(13): 1 820-1 826.[韩以贵, 李向辉, 张世红, 等. 豫西祁雨沟金矿单颗粒和碎裂状黄铁矿Rb-Sr等时线定年[J]. 科学通报, 2007, 52(11): 1 307-1 311.]
[19]Yu Gang. The Chronology and Isotopic Geochemistry of Qingchengzi Ore Field, Eastern Liaoning[D]. Hefei: University of Science and Technology of China, 2005. [喻钢. 辽东青城子矿田的年代学和同位素地球化学[D]. 合肥: 中国科学技术大学, 2005.]
[20]Yin M D, Li W B, Sun X W. Rb-Sr isotopic dating of sphalerite from the giant Huize Zn-Pb ore field, Yunnan province, southwestern China[J]. Chinese Journal of Geochemistry, 2009, 28(1): 70-75.
[21]Tretbar D R, Arehart G B, Christensen J N. Dating gold deposition in a Carlin-type gold deposit using Rb/Sr methods on the mineral galkhaite[J]. Geology, 2000, 28(10): 947-950.
[22]Pettke T, Diamond L W. Rb-Sr dating of sphalerite based on fluid inclusion-host mineral isochrones: A calarification of why it works[J]. Economic Geology, 1996, 91: 951-956.
[23]Walshaw R D, Menuge J F. Dating of crustal fluid flow by the Rb-Sr isotopic analysis of sphalerite: A review[J]. Geological Society, London, Special Publications, 1998, 144: 137-143.
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