同位素稀释热电离质谱法测定锡石U-Pb年龄探索
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摘要
针对我国锡多金属矿床的定年问题,建立一种采用同位素稀释热电离质谱(ID-TIMS)法进行锡石U-Pb同位素定年的方法,并与激光烧蚀电感耦合等离子体质谱(LA-ICP-MS)法进行对比验证。由于采用化学处理技术分别纯化了U和Pb,减少了普通铅的影响,大大提高了分析测定精度。将该方法应用于某地区石英-锡石-黑钨矿脉的锡石样品分析,获得了精确的U-Pb年龄值。
Focusing on the problem of the dating of tin polymetallic deposits in China, the authors established a new method for U-Pb isotope dating of cassiterite with isotope dilution-thermal ionization mass spectrometry(ID-TIMS), and made comparison with laser ablation inductively coupled plasma mass spectrometry. Because U and Pb are purified separately by the new experimental pretreatment technology, the influence of the common lead is reduced, and the analytical precision is greatly improved. This method was applied to the cassiterite samples from a quartz-cassiterite-wolframite vein in a certain area, with a precise U-Pb isotopic age obtained.
Focusing on the problem of the dating of tin polymetallic deposits in China, the authors established a new method for U-Pb isotope dating of cassiterite with isotope dilution-thermal ionization mass spectrometry(ID-TIMS), and made comparison with laser ablation inductively coupled plasma mass spectrometry. Because U and Pb are purified separately by the new experimental pretreatment technology, the influence of the common lead is reduced, and the analytical precision is greatly improved. This method was applied to the cassiterite samples from a quartz-cassiterite-wolframite vein in a certain area, with a precise U-Pb isotopic age obtained.
引文
崔玉荣,周红英,耿建珍,李怀坤,李惠民.2012.LA-MC-ICP-MS独居石微区原位U-Pb同位素年龄测定[J].地球学报,33(6):865-876.
耿建珍,张健,李怀坤,李惠民,张永清,郝爽.2012.10μm尺度锆石U-Pb年龄的LA-MC-ICP-MS测定[J].地球学报,33(6):877-884.
李国臣,丰成友,王瑞江,马圣钞,李洪茂,周安顺.2012.新疆白干湖钨锡矿田东北部花岗岩锆石SIMS U-Pb年龄、地球化学特征及构造意义[J].地球学报,33(2):216-226.
李惠民,郝爽,耿建珍,李怀坤,张永清,周红英.2009.用激光烧蚀多接收器等离子体质谱(LA-MC-ICPMS)直接原位测定锡多金属矿床中的锡石U-Pb同位素年龄[J].矿物学报,增刊:313.
李惠民,周红英,郝爽,崔玉荣,张永清,李国占.2013.锡石U-Pb同位素定年中的年龄校正策略--兼论矿石矿物U-Pb同位素定年中的年龄校正问题[J].矿物学报,增刊:595-596.
刘玉平,李正祥,李惠民,郭利果,徐伟,叶霖,李朝阳,皮道会.2007.都龙锡锌矿床锡石和锆石U-Pb年代学:滇东南白垩纪大规模花岗岩成岩-成矿事件[J].岩石学报,23(5):967-976.
马楠,邓军,王庆飞,王长明,张静,李龚健.2013.云南腾冲大松坡锡矿成矿年代学研究:锆石LA-ICP-MS U-Pb年龄和锡石LA-MC-ICP-MS U-Pb年龄证据[J].岩石学报,29(4):1223-1235.
王小娟,刘玉平,缪应理,鲍谈,叶霖,张乾.2014.都龙锡锌多金属矿床LA-MC-ICPMS锡石U-Pb测年及其意义[J].岩石学报,30(3):867-886.
王志强,陈斌,马星华.2014.南岭芙蓉锡矿田锡石原位LA-ICP-MS U-Pb年代学及地球化学研究:对成矿流体来源和演化的意义[J].科学通报,59(25):2505-2519.
徐斌,蒋少涌,罗兰.2015.江西彭山锡多金属矿集区尖峰坡锡矿床LA-MC-ICP-MS锡石U-Pb测年及其地质意义[J].岩石学报,31(3):701-708.
张东亮,彭建堂,胡瑞忠,袁顺达,郑德顺.2011.锡石U-Pb同位素体系的封闭性及其测年的可靠性分析[J].地质论评,57(4):549-554.
周红英,耿建珍,崔玉荣,李怀坤,李惠民.2012.磷灰石微区原位LA-MC-ICP-MS法U-Pb同位素定年[J].地球学报,33(6):857-864.
周建厚,丰成友,李大新,王辉,张明玉,李国臣,王增振.2015.东昆仑白干湖钨锡矿床成矿岩体岩石学、年代学和地球化学[J].岩石学报,31(8):2277-2293.
中华人民共和国地质矿产部.2002.同位素地质样品分析方法:中华人民共和国地质矿产行业标准DZ/T0184.120184.2221997[M].北京:中国标准出版社:24.
ANDERSEN T.2002.Correction of common lead in U-Pb analyses that do not report 204Pb[J].Chemical Geology,192(1-2):59-79.
CHEN Xiao-cui,HU Rui-zhong,BI Xian-wu,LI Hui-min,LANJiang-bo,ZHAO Cheng-hai,ZHU Jing-jing.2014.Cassiterite LA-MC-ICP-MS U/Pb and muscovite 40Ar/39Ar dating of tin deposits in the Tengchong-Lianghe tin district,NW Yunnan,China[J].Mineralium Deposita,49(7):843-860.
CUI Yu-rong,ZHOU Hong-ying,GENG Jian-zhen,LI Huai-kun,LI Hui-min.2012.In Situ LA-MC-ICP-MS U-Pb Isotopic Dating of Monazite[J].Acta Geoscientica Sinica,33(6):865-876(in Chinese with English abstract).
GENG Jian-zhen,ZHANG Jian,LI Huai-kun,LI Hui-min,ZHANGYong-qing,HAO Shuang.2012.Ten-micron-sized Zircon U-Pb Dating Using LA-MC-ICP-MS[J].Acta Geoscientica Sinica33(6):877-884(in Chinese with English abstract).
GULSON B L,JONES M T.1992.Cassiterite:Potential for direct dating of mineral deposits and a precise age for the Bushveld Complex granites[J].Geology,20:355-358.
JIANG Shao-yong,YU Ji-min,LU Jian-jun.2004.Trace and rare-earth element geochemistry in tourmaline and cassiterite from the Yunlong tin deposit,Yunnan,China:Implication for migmatitic-hydrothermal fluid evolution and ore genesis[J].Chemical Geology,209(3-4):193-213.
LI Guo-chen,FENG Cheng-you,WANG Rui-jiang,MASheng-chao,LI Hong-mao,ZHOU An-shun.2012.SIMS Zircon U-Pb Age,Petrochemistry and Tectonic Implications of Granitoids in Northeastern Baiganhue W-Sn Orefield,Xinjiang[J].Acta Geoscientica Sinica,33(2):216-226(in Chinese with English abstract).
LI Hui-min,HAO Shuang,GENG Jian-zhen,LI Huai-kun,ZHANG Yong-qing,ZHOU Hong-ying.2009.In situ determination of cassiterite U-Pb isotopic ages of tin polymetallic deposit with LA-MC-ICPMS[J].Acta Mineralogica Sinica,Supplement:313(in Chinese).
LI Hui-min,ZHOU Hong-ying,HAO Shuang,CUI Yu-rong,ZHANG Yong-qing,LI Guo-zhan.2013.Correction strategy of cassiterite U-Pb dating age--Discussion on the age correction in the U-Pb isotopic dating of ore minerals[J].Acta Mineralogica Sinica,Supplement:595-596(in Chinese).
LIU Yu-ping,LI Zheng-xiang,LI Hui-min,GUO Li-guo,XU Wei,YE Lin,LI Chao-yang,PI Dao-hui.2007.U-Pb geochronology of cassiterite and zircon from the Dulong Sn-Zn deposit:Evidence for Cretaceous large-scale granitic magmatism and mineralization events in southeastern Yunnan province,China[J].Acta Petrologica Sinica,23(5):967-976(in Chinese with English abstract).
LUDWIG K R.1998.On the treatment of concordant uranium-lead ages[J].Geochimica et Cosmochimica Acta,62(4):665-676.
LUDWIG K R.2000.Users Manual for Isoplot/Ex(version 2.2):AGeochronoligical Toolkit for Microsoft Excel[J].Berkeley:Berkeley Geochronology Center Special Publication.
MA Nan,DENG Jun,WANG Qing-fei,WANG Chang-ming,ZHANG Jing,LI Gong-jian.2013.Geochronology of the Dasongpo tin deposit,Yunnan Province:Evidence from zircon LA-ICP-MS U-Pb ages and cassiterite LA-MC-ICP-MS U-Pb age[J].Acta Petrologica Sinica,29(4):1223-1235(in Chinese with English abstract).
MCNAUGHTON N J,POLLARD P J,GULSON B L,JONES M T.1993.Cassiterite:Potential for direct dating of mineral deposits and a precise age for the Bushveld Complex granites:Comment and Reply[J].Geology,20:285-286.
Ministry of Geology and Mineral Resources of the People’s Republic of China.2002.Analytical methods for isotopic geological samples:standards of the People's Republic of China in the field of geology and mineral resources DZ/T0184.120184.2221997[M].Beijing:Standards Press of China:24.
WANG Xiao-juan,LIU Yu-ping,MIAO Ying-li,BAO Tan,YE Lin,ZHANG Qian.2014.In-situ LA-MC-ICP-MS cassiterite U-Pb dating of Dulong Sn-Zn polymetallic deposit and its significance[J].Acta Petrologica Sinica,30(3):867-876(in Chinese with English abstract).
WANG Zhi-qiang,CHEN Bin,MA Xing-hua.2014.In situ LA-ICP-MS U-Pb age and geochemical data of cassiterite of the Furong tin deposit,the Nanling Range:Implications for the origin and evolution of the ore-forming fluid[J].Chinese Science Bulletin,59(25):2505-2519(in Chinese with English abstract).
XU Bin,JIANG Shao-yong,LUO Lan.2015.LA-MC-ICP-MSU-Pb dating of cassiterite from the Jianfengpo Sn deposit in the Pengshan Sn-polymetallic ore field,Jiangxi Province and its geological significance[J].Acta Petrologica Sinica,31(3):701-708(in Chinese with English abstract).
YUAN Shun-da,PENG Jian-tang,HU Rui-zhong,LI Hui-min,SHEN Neng-ping,ZHANG Dong-liang.2008.A precise U-Pb age on cassiterite from the Xianghualing tin-polymetallic deposit(Hunan,South China)[J].Mineralium Deposita,43(4):375-382.
YUAN Shun-da,PENG Jian-tang,HAO Shuang,LI Hui-min,GENG Jian-zhen,ZHANG Dong-liang.2011.In situ LA-MC-ICP-MS and ID-TIMS U-Pb geochronology of cassiterite in the giant Furong tin deposit,Hunan Province,South China:New constraints on the timing of tin-polymetallic mineralization[J].Ore Geology Reviews,43:235-242.
ZHANG Dong-liang,PENG Jian-tang,HU Rui-zhong,YUANShun-da,ZHENG De-shun.2014.The Closure of U-Pb Isotope System in Cassiterite and Its Reliability for Dating[J].Geological Review,57(4):549-554(in Chinese).
ZHANG Rong-qing,LU Jian-jun,WANG Ru-cheng,YANG Ping,ZHU Jin-chu,YAO Yuan,GAO Jian-feng,LI Chao,LEIZe-heng,ZHANG Wen-lan,GUO Wei-min.2015.Constraints of in situ zircon and cassiterite U-Pb,molybdenite Re-Os and muscovite 40Ar-39Ar ages on multiple generations of granitic magmatism and related W-Sn mineralization in the Wangxianling area,Nanling Range,South China[J].Ore Geology Reviews,65:1021-1042.
ZHOU Hong-ying,GENG Jian-zhen,CUI Yu-rong,LI Huai-kun,LI Hui-min.2012.In Situ U-Pb Dating of Apatite Using LA-MC-ICP-MS[J].Acta Geoscientica Sinica,33(6):857-864(in Chinese with English abstract).
ZHOU Jian-hou,FENG Cheng-you,LI Da-xin,WANG Hui,ZHANG Ming-yu,LI Guo-cheng,WANG Zeng-zhen.2015.Petrology,geochronology and geochemistry of metallogenetic granite in Baiganhu W-Sn deposit,East Kunlun[J].Acta Petrologica Sinica,31(8):2277-2293(in Chinese with English abstract).
耿建珍,张健,李怀坤,李惠民,张永清,郝爽.2012.10μm尺度锆石U-Pb年龄的LA-MC-ICP-MS测定[J].地球学报,33(6):877-884.
李国臣,丰成友,王瑞江,马圣钞,李洪茂,周安顺.2012.新疆白干湖钨锡矿田东北部花岗岩锆石SIMS U-Pb年龄、地球化学特征及构造意义[J].地球学报,33(2):216-226.
李惠民,郝爽,耿建珍,李怀坤,张永清,周红英.2009.用激光烧蚀多接收器等离子体质谱(LA-MC-ICPMS)直接原位测定锡多金属矿床中的锡石U-Pb同位素年龄[J].矿物学报,增刊:313.
李惠民,周红英,郝爽,崔玉荣,张永清,李国占.2013.锡石U-Pb同位素定年中的年龄校正策略--兼论矿石矿物U-Pb同位素定年中的年龄校正问题[J].矿物学报,增刊:595-596.
刘玉平,李正祥,李惠民,郭利果,徐伟,叶霖,李朝阳,皮道会.2007.都龙锡锌矿床锡石和锆石U-Pb年代学:滇东南白垩纪大规模花岗岩成岩-成矿事件[J].岩石学报,23(5):967-976.
马楠,邓军,王庆飞,王长明,张静,李龚健.2013.云南腾冲大松坡锡矿成矿年代学研究:锆石LA-ICP-MS U-Pb年龄和锡石LA-MC-ICP-MS U-Pb年龄证据[J].岩石学报,29(4):1223-1235.
王小娟,刘玉平,缪应理,鲍谈,叶霖,张乾.2014.都龙锡锌多金属矿床LA-MC-ICPMS锡石U-Pb测年及其意义[J].岩石学报,30(3):867-886.
王志强,陈斌,马星华.2014.南岭芙蓉锡矿田锡石原位LA-ICP-MS U-Pb年代学及地球化学研究:对成矿流体来源和演化的意义[J].科学通报,59(25):2505-2519.
徐斌,蒋少涌,罗兰.2015.江西彭山锡多金属矿集区尖峰坡锡矿床LA-MC-ICP-MS锡石U-Pb测年及其地质意义[J].岩石学报,31(3):701-708.
张东亮,彭建堂,胡瑞忠,袁顺达,郑德顺.2011.锡石U-Pb同位素体系的封闭性及其测年的可靠性分析[J].地质论评,57(4):549-554.
周红英,耿建珍,崔玉荣,李怀坤,李惠民.2012.磷灰石微区原位LA-MC-ICP-MS法U-Pb同位素定年[J].地球学报,33(6):857-864.
周建厚,丰成友,李大新,王辉,张明玉,李国臣,王增振.2015.东昆仑白干湖钨锡矿床成矿岩体岩石学、年代学和地球化学[J].岩石学报,31(8):2277-2293.
中华人民共和国地质矿产部.2002.同位素地质样品分析方法:中华人民共和国地质矿产行业标准DZ/T0184.120184.2221997[M].北京:中国标准出版社:24.
ANDERSEN T.2002.Correction of common lead in U-Pb analyses that do not report 204Pb[J].Chemical Geology,192(1-2):59-79.
CHEN Xiao-cui,HU Rui-zhong,BI Xian-wu,LI Hui-min,LANJiang-bo,ZHAO Cheng-hai,ZHU Jing-jing.2014.Cassiterite LA-MC-ICP-MS U/Pb and muscovite 40Ar/39Ar dating of tin deposits in the Tengchong-Lianghe tin district,NW Yunnan,China[J].Mineralium Deposita,49(7):843-860.
CUI Yu-rong,ZHOU Hong-ying,GENG Jian-zhen,LI Huai-kun,LI Hui-min.2012.In Situ LA-MC-ICP-MS U-Pb Isotopic Dating of Monazite[J].Acta Geoscientica Sinica,33(6):865-876(in Chinese with English abstract).
GENG Jian-zhen,ZHANG Jian,LI Huai-kun,LI Hui-min,ZHANGYong-qing,HAO Shuang.2012.Ten-micron-sized Zircon U-Pb Dating Using LA-MC-ICP-MS[J].Acta Geoscientica Sinica33(6):877-884(in Chinese with English abstract).
GULSON B L,JONES M T.1992.Cassiterite:Potential for direct dating of mineral deposits and a precise age for the Bushveld Complex granites[J].Geology,20:355-358.
JIANG Shao-yong,YU Ji-min,LU Jian-jun.2004.Trace and rare-earth element geochemistry in tourmaline and cassiterite from the Yunlong tin deposit,Yunnan,China:Implication for migmatitic-hydrothermal fluid evolution and ore genesis[J].Chemical Geology,209(3-4):193-213.
LI Guo-chen,FENG Cheng-you,WANG Rui-jiang,MASheng-chao,LI Hong-mao,ZHOU An-shun.2012.SIMS Zircon U-Pb Age,Petrochemistry and Tectonic Implications of Granitoids in Northeastern Baiganhue W-Sn Orefield,Xinjiang[J].Acta Geoscientica Sinica,33(2):216-226(in Chinese with English abstract).
LI Hui-min,HAO Shuang,GENG Jian-zhen,LI Huai-kun,ZHANG Yong-qing,ZHOU Hong-ying.2009.In situ determination of cassiterite U-Pb isotopic ages of tin polymetallic deposit with LA-MC-ICPMS[J].Acta Mineralogica Sinica,Supplement:313(in Chinese).
LI Hui-min,ZHOU Hong-ying,HAO Shuang,CUI Yu-rong,ZHANG Yong-qing,LI Guo-zhan.2013.Correction strategy of cassiterite U-Pb dating age--Discussion on the age correction in the U-Pb isotopic dating of ore minerals[J].Acta Mineralogica Sinica,Supplement:595-596(in Chinese).
LIU Yu-ping,LI Zheng-xiang,LI Hui-min,GUO Li-guo,XU Wei,YE Lin,LI Chao-yang,PI Dao-hui.2007.U-Pb geochronology of cassiterite and zircon from the Dulong Sn-Zn deposit:Evidence for Cretaceous large-scale granitic magmatism and mineralization events in southeastern Yunnan province,China[J].Acta Petrologica Sinica,23(5):967-976(in Chinese with English abstract).
LUDWIG K R.1998.On the treatment of concordant uranium-lead ages[J].Geochimica et Cosmochimica Acta,62(4):665-676.
LUDWIG K R.2000.Users Manual for Isoplot/Ex(version 2.2):AGeochronoligical Toolkit for Microsoft Excel[J].Berkeley:Berkeley Geochronology Center Special Publication.
MA Nan,DENG Jun,WANG Qing-fei,WANG Chang-ming,ZHANG Jing,LI Gong-jian.2013.Geochronology of the Dasongpo tin deposit,Yunnan Province:Evidence from zircon LA-ICP-MS U-Pb ages and cassiterite LA-MC-ICP-MS U-Pb age[J].Acta Petrologica Sinica,29(4):1223-1235(in Chinese with English abstract).
MCNAUGHTON N J,POLLARD P J,GULSON B L,JONES M T.1993.Cassiterite:Potential for direct dating of mineral deposits and a precise age for the Bushveld Complex granites:Comment and Reply[J].Geology,20:285-286.
Ministry of Geology and Mineral Resources of the People’s Republic of China.2002.Analytical methods for isotopic geological samples:standards of the People's Republic of China in the field of geology and mineral resources DZ/T0184.120184.2221997[M].Beijing:Standards Press of China:24.
WANG Xiao-juan,LIU Yu-ping,MIAO Ying-li,BAO Tan,YE Lin,ZHANG Qian.2014.In-situ LA-MC-ICP-MS cassiterite U-Pb dating of Dulong Sn-Zn polymetallic deposit and its significance[J].Acta Petrologica Sinica,30(3):867-876(in Chinese with English abstract).
WANG Zhi-qiang,CHEN Bin,MA Xing-hua.2014.In situ LA-ICP-MS U-Pb age and geochemical data of cassiterite of the Furong tin deposit,the Nanling Range:Implications for the origin and evolution of the ore-forming fluid[J].Chinese Science Bulletin,59(25):2505-2519(in Chinese with English abstract).
XU Bin,JIANG Shao-yong,LUO Lan.2015.LA-MC-ICP-MSU-Pb dating of cassiterite from the Jianfengpo Sn deposit in the Pengshan Sn-polymetallic ore field,Jiangxi Province and its geological significance[J].Acta Petrologica Sinica,31(3):701-708(in Chinese with English abstract).
YUAN Shun-da,PENG Jian-tang,HU Rui-zhong,LI Hui-min,SHEN Neng-ping,ZHANG Dong-liang.2008.A precise U-Pb age on cassiterite from the Xianghualing tin-polymetallic deposit(Hunan,South China)[J].Mineralium Deposita,43(4):375-382.
YUAN Shun-da,PENG Jian-tang,HAO Shuang,LI Hui-min,GENG Jian-zhen,ZHANG Dong-liang.2011.In situ LA-MC-ICP-MS and ID-TIMS U-Pb geochronology of cassiterite in the giant Furong tin deposit,Hunan Province,South China:New constraints on the timing of tin-polymetallic mineralization[J].Ore Geology Reviews,43:235-242.
ZHANG Dong-liang,PENG Jian-tang,HU Rui-zhong,YUANShun-da,ZHENG De-shun.2014.The Closure of U-Pb Isotope System in Cassiterite and Its Reliability for Dating[J].Geological Review,57(4):549-554(in Chinese).
ZHANG Rong-qing,LU Jian-jun,WANG Ru-cheng,YANG Ping,ZHU Jin-chu,YAO Yuan,GAO Jian-feng,LI Chao,LEIZe-heng,ZHANG Wen-lan,GUO Wei-min.2015.Constraints of in situ zircon and cassiterite U-Pb,molybdenite Re-Os and muscovite 40Ar-39Ar ages on multiple generations of granitic magmatism and related W-Sn mineralization in the Wangxianling area,Nanling Range,South China[J].Ore Geology Reviews,65:1021-1042.
ZHOU Hong-ying,GENG Jian-zhen,CUI Yu-rong,LI Huai-kun,LI Hui-min.2012.In Situ U-Pb Dating of Apatite Using LA-MC-ICP-MS[J].Acta Geoscientica Sinica,33(6):857-864(in Chinese with English abstract).
ZHOU Jian-hou,FENG Cheng-you,LI Da-xin,WANG Hui,ZHANG Ming-yu,LI Guo-cheng,WANG Zeng-zhen.2015.Petrology,geochronology and geochemistry of metallogenetic granite in Baiganhu W-Sn deposit,East Kunlun[J].Acta Petrologica Sinica,31(8):2277-2293(in Chinese with English abstract).