江南造山带西南缘坑头金矿稀土和微量元素地球化学特征及其意义
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摘要
江南造山带为金多金属复合成矿带,其矿床成因备受关注。坑头金矿位于江南造山带西南缘,矿床成矿流体来源及性质存在较大争议。文章通过大量野外调查及室内显微镜下观察以及采用电感耦合等离子质谱仪(ICP-MS)对坑头金矿近矿围岩和石英脉测试分析研究得出:坑头金矿床的成矿流体具有多来源的特征,成矿流体主要来源于区域变质作用过程中产生的变质热液。石英脉的稀土和微量元素特征表明其形成于相对还原的环境,成矿物质来源于深部,成矿流体有成矿后期遭到大气降水的加入。结合矿床地质特征,认为坑头金矿床为造山型变质热液型矿床。
The Jiangnan orogenic belt gold multi metal metallogenic belt, its genesis has attracted much attention. There is still much controversy about the source and nature of ore-forming fluids of Kengtou gold deposit is located in the southwestern margin of the Jiangnan orogenic belt.,In this paper, through a large number of field investigations, indoor microscopic observation and the application of inductively coupled plasma mass spectrometer(ICP-MS) to study the surrounding rock and quartz vein of the Kengtou gold deposit,it is found that the ore-forming fluid of the Kengtou gold deposit is characterized by multiple sources, and the ore-forming fluid mainly originates from the process of regional metamorphism. Metamorphic hydrothermal solution. The characteristics of the rare earth and trace elements of quartz vein indicate that it is formed in the environment of relative reduction, and the metallogenic material is derived from the deep, and the ore-forming fluid has been added to the meteoric water during the later period of mineralization. According to the geological characteristics of the deposit, the Kengtou gold deposit is an orogenic metamorphic hydrothermal deposit.
The Jiangnan orogenic belt gold multi metal metallogenic belt, its genesis has attracted much attention. There is still much controversy about the source and nature of ore-forming fluids of Kengtou gold deposit is located in the southwestern margin of the Jiangnan orogenic belt.,In this paper, through a large number of field investigations, indoor microscopic observation and the application of inductively coupled plasma mass spectrometer(ICP-MS) to study the surrounding rock and quartz vein of the Kengtou gold deposit,it is found that the ore-forming fluid of the Kengtou gold deposit is characterized by multiple sources, and the ore-forming fluid mainly originates from the process of regional metamorphism. Metamorphic hydrothermal solution. The characteristics of the rare earth and trace elements of quartz vein indicate that it is formed in the environment of relative reduction, and the metallogenic material is derived from the deep, and the ore-forming fluid has been added to the meteoric water during the later period of mineralization. According to the geological characteristics of the deposit, the Kengtou gold deposit is an orogenic metamorphic hydrothermal deposit.
引文
Bau M, Dulski P. 1995.Comparative study of yttrium and rare-earth element behavious in fluorine-rich hydrothermal fluids[J]. Contributions to Mineralogy and Petrology, 119:213-223.
Bau M, Moller P, Dulski P. 1997. Yttrium and lanthanides in eastern Mediterranean seawater and their fractionation during redox-cycling[J].Marine Chemistry, 56(5):123-131.
Douville E, Bienvenu P, Charlou J I. 1999. Yttrium and rare earth element in fluids fr-om various deep-sea hydrothermal systems[J].Geochimica et Cosmochimica Acta, 63:627-643.
Goldfarb R J, Groves D I,Gardoll S. 2001.Orogenic gold and geologic time:a global synthesis[J]. Ore geology reviews, 18(1):1-75.
Goldfarb R J, Groves D I. 2015. Orogenic gold:Common or evolving fluid and metal sources through time[J]. Lithos, 233(15):2-26
Groves D I, Goldfarb R J,Gebre-Mariam M, et al. 1998. Orogenic gold deposits:a proposed classification in the context of their crustal distribution and relationship to other gold deposit types[J]. Ore geology reviews, 13(1):7-27.
Hu Z, Zhang W,Liu Y, et al. 2014.“Wave” signal-smoothing and mercury-removing device for laser ablation quadrupole and multiple collector ICPMS analysis:application to lead isotope analysis[J].Analytical chemistry, 87(2):1152-1157.
Liang Q, Jing H,Gregoire D C. 2000. Determination of trace elements in granites by inductively coupled plasma mass spectrometry[J]. Talanta, 51(3):507-513.
Oberthür T, Weiser T, Amanor J A, et al. 1997.Mineralogical siting and distribution of gold in quartz veins and sulfide ores of the Ashanti mine and other deposits in the Ashanti belt of Ghana:genetic implications[J]. Mineralium Deposita, 32(1):2-15.
Oreskes N, Einaudi M T. 1990.Origin of rare-earth element enrichedhematite breccias at the Olympic Dam Cu-U-Au-Ag deposit, Roxby Downs,South Australia[J]. Econ Geol,85:1-28.
Pitcairn I K,Teagle D A H, Craw D, Olivo G R, Kerrich R, Brewer T S, 2006. Sources of metals and fluids in orogenic gold deposits:insights from the Otago and Alpine Schists, New Zealand. Economic Geology 101, 1525-1546.
Rudnick R, Gao S. 2003.Composition of the continental crust. In:Rudnick R. The crust, treatise on geochemistry, Amsterdam[J].Elsevier, 3:1-64.
Taylor S R,Mclennan S M 1985.The continental crust:Its composition and evolution[M].London:Black-well Scientific publication.
Xu D, Deng T, Chi G, et al. 2017. Gold mineralization in the Jiangnan Orogenic Belt of South China:geological, geochemical and geochronological characteristics, ore deposit-type and geodynamic setting[J].Ore Geology Reviews, 88:565-618.
毕献武,胡瑞忠,彭建堂,等.2004.黄铁矿微量元素地球化学特征及其对成矿流体性质的指示[J].矿物岩石地球化学通报,23(1):1-4.
陈文一,卢焕章,王中刚,胡瑞忠,吴学益,Moussa Keita,朱笑青2006.黔东南新元古界青白口下江群火山碎屑浊流沉积与金矿关系的初步研究[J].古地理学报,8(4):487-497.
陈原林,顾尚义,何兴华,吴龙,王兴伟,尹祺,敖学龙.2017.测定江南造山带西南缘坑头金矿黄铁矿中LA-ICP-MS微量元素特征[J].贵州地质,34(3):183-190.
戴传固,张慧,王敏,陈建书,卢定彪,曾昭光.2010.江南造山带西南段地质构造特征及演化[M].北京:地质出版社.
杜定全,刘志臣,孙士军,等.2010.黔东南地区金矿控矿构造的空间关系分析[J].矿物岩石地球化学通报,29(4):380-387.
何兴华,顾尚义,李纪,陈原林,吴龙,王兴伟,尹祺,敖学龙.2018.黔东南油麻坳金矿床含金石英脉钨富集机理[J].矿物学报,38:1-9.
黎应书,秦德先,普传杰,陈爱兵,谈树成,范柱国.2004,黔东南地区金矿地质和地球化学特征[J].昆明理工大学学报(理工版),29(3):5-8.
李国静,余大龙.2011.贵州天柱坑头金矿构造变形特征探讨[J].贵州大学学报(自然科学版),(2):37-39,46.
李慧,李文厚,吴春燕,等.2008.鄂尔多斯盆地延长组中下部凝灰岩地球化学特征及其地质意义[C]//全国古地理学及沉积学学术会议.
刘锐,陶平,陈坡.2013.黔东南坑头金矿床元素地球化学特征与成矿意义[J].贵州大学学报(自然科学版),(3):56-61.
卢焕章,池国祥,朱笑青,等.2018.造山型金矿的地质特征和成矿流体[J].大地构造与成矿学,(2).244-265.
卢焕章,王中刚,吴学益,等.2005.贵州东南部的地质构造与金矿床的关系[J].地质学报,79(1):98-105.
罗福蒸.1992.贵州天柱坑头金矿矿体地质控矿构造及成矿预测的初步研究[R].贵州工学院.
毛光周,华仁民,高剑锋,赵葵东,龙光明,陆慧娟,姚军明.2006.江西金山金矿床含金黄铁矿的稀土元素和微量元素特征[J].矿床地质,25(4):412-426.
毛景文,李红艳.1997.江南古陆某些金矿床成因讨论[J].地球化学,26(5):71-81.
邱正杰,范宏瑞,丛培章,等.2015,造山型金矿床成矿过程研究进展[J].矿床地质,34(1):21-38.
唐文春,朱汇派.2008.新康猫金矿床热液矿物微量元素地球化学特征及其成因探讨[J].矿物岩石,28(4):64-70.
陶平,王尚彦,戴传固,等.2005.黔东地区金矿床类型及其基本特征[J].贵州地质,22(4):229-235.
田洪德,黄道光,余清平.2011.黔东南天柱县坑头金矿地质特征及成因分析[J].贵州地质,(4):265-271.
王尚彦,张立新,陶平,戴传固,况顺达,王敏.2006.贵州东部石英脉型金矿地质特征和成矿作用[J].贵州地质,23(1):36-43.
王孝磊,周金城,陈昕,等.2017.江南造山带的形成与演化[J].矿物岩石地球化学通报,36(5):714-735.
吴学益,卢焕章,吕古贤,等.2006.黔东南锦屏一天柱地区构造控岩控金特征模拟实验及其力学分析[J].大地构造与成矿学,30(3):355-368.
杨光忠.2006.黔东南地区热液型金矿的成矿作用及其模式[J].贵州地质,23(3):197-202.
杨瑞东,张晓东,刘玲,等.2009.贵州锦屏新元古界青白口系下江群稀土、微量元素分布特征—探讨金的来源问题[J].地质学报,83(4):505-514
杨瑞东,张晓东,刘玲,袁世婷,许利群.2009.贵州锦屏新元古界青白口系下江群稀土、微量元素分布特征[J].地质学报,83(4):505-514.
余大龙,周珍国,陶红.1991.黔东金头金矿矿床地质及包裹体特征初探[J].贵州地质,(3):241-251.
张杰,余大龙,张先煜,杨勇俊.1998.贵州天柱磨山-油麻坳金矿化带岩石矿物地球化学研究[J].地质与勘探,34(2):30-36.
张晓东,杨瑞东,刘玲,魏怀瑞.2012.贵州锦屏新元古界下江群元素地球化学特征及其与金矿的关系[J].地质学报,86(2):258-268.
张晓东,杨瑞东,王伟,魏怀瑞.2011.黔东南平秋金矿微量与稀土元素地球化学特征及意义[J].矿物岩石,31(1):63-69.
朱笑青,王甘露,卢焕章,等.2006.黔东南金矿形成时代的确定兼论湘黔加里东金矿带[J].中国地质,33(5):1092-1099.
Bau M, Moller P, Dulski P. 1997. Yttrium and lanthanides in eastern Mediterranean seawater and their fractionation during redox-cycling[J].Marine Chemistry, 56(5):123-131.
Douville E, Bienvenu P, Charlou J I. 1999. Yttrium and rare earth element in fluids fr-om various deep-sea hydrothermal systems[J].Geochimica et Cosmochimica Acta, 63:627-643.
Goldfarb R J, Groves D I,Gardoll S. 2001.Orogenic gold and geologic time:a global synthesis[J]. Ore geology reviews, 18(1):1-75.
Goldfarb R J, Groves D I. 2015. Orogenic gold:Common or evolving fluid and metal sources through time[J]. Lithos, 233(15):2-26
Groves D I, Goldfarb R J,Gebre-Mariam M, et al. 1998. Orogenic gold deposits:a proposed classification in the context of their crustal distribution and relationship to other gold deposit types[J]. Ore geology reviews, 13(1):7-27.
Hu Z, Zhang W,Liu Y, et al. 2014.“Wave” signal-smoothing and mercury-removing device for laser ablation quadrupole and multiple collector ICPMS analysis:application to lead isotope analysis[J].Analytical chemistry, 87(2):1152-1157.
Liang Q, Jing H,Gregoire D C. 2000. Determination of trace elements in granites by inductively coupled plasma mass spectrometry[J]. Talanta, 51(3):507-513.
Oberthür T, Weiser T, Amanor J A, et al. 1997.Mineralogical siting and distribution of gold in quartz veins and sulfide ores of the Ashanti mine and other deposits in the Ashanti belt of Ghana:genetic implications[J]. Mineralium Deposita, 32(1):2-15.
Oreskes N, Einaudi M T. 1990.Origin of rare-earth element enrichedhematite breccias at the Olympic Dam Cu-U-Au-Ag deposit, Roxby Downs,South Australia[J]. Econ Geol,85:1-28.
Pitcairn I K,Teagle D A H, Craw D, Olivo G R, Kerrich R, Brewer T S, 2006. Sources of metals and fluids in orogenic gold deposits:insights from the Otago and Alpine Schists, New Zealand. Economic Geology 101, 1525-1546.
Rudnick R, Gao S. 2003.Composition of the continental crust. In:Rudnick R. The crust, treatise on geochemistry, Amsterdam[J].Elsevier, 3:1-64.
Taylor S R,Mclennan S M 1985.The continental crust:Its composition and evolution[M].London:Black-well Scientific publication.
Xu D, Deng T, Chi G, et al. 2017. Gold mineralization in the Jiangnan Orogenic Belt of South China:geological, geochemical and geochronological characteristics, ore deposit-type and geodynamic setting[J].Ore Geology Reviews, 88:565-618.
毕献武,胡瑞忠,彭建堂,等.2004.黄铁矿微量元素地球化学特征及其对成矿流体性质的指示[J].矿物岩石地球化学通报,23(1):1-4.
陈文一,卢焕章,王中刚,胡瑞忠,吴学益,Moussa Keita,朱笑青2006.黔东南新元古界青白口下江群火山碎屑浊流沉积与金矿关系的初步研究[J].古地理学报,8(4):487-497.
陈原林,顾尚义,何兴华,吴龙,王兴伟,尹祺,敖学龙.2017.测定江南造山带西南缘坑头金矿黄铁矿中LA-ICP-MS微量元素特征[J].贵州地质,34(3):183-190.
戴传固,张慧,王敏,陈建书,卢定彪,曾昭光.2010.江南造山带西南段地质构造特征及演化[M].北京:地质出版社.
杜定全,刘志臣,孙士军,等.2010.黔东南地区金矿控矿构造的空间关系分析[J].矿物岩石地球化学通报,29(4):380-387.
何兴华,顾尚义,李纪,陈原林,吴龙,王兴伟,尹祺,敖学龙.2018.黔东南油麻坳金矿床含金石英脉钨富集机理[J].矿物学报,38:1-9.
黎应书,秦德先,普传杰,陈爱兵,谈树成,范柱国.2004,黔东南地区金矿地质和地球化学特征[J].昆明理工大学学报(理工版),29(3):5-8.
李国静,余大龙.2011.贵州天柱坑头金矿构造变形特征探讨[J].贵州大学学报(自然科学版),(2):37-39,46.
李慧,李文厚,吴春燕,等.2008.鄂尔多斯盆地延长组中下部凝灰岩地球化学特征及其地质意义[C]//全国古地理学及沉积学学术会议.
刘锐,陶平,陈坡.2013.黔东南坑头金矿床元素地球化学特征与成矿意义[J].贵州大学学报(自然科学版),(3):56-61.
卢焕章,池国祥,朱笑青,等.2018.造山型金矿的地质特征和成矿流体[J].大地构造与成矿学,(2).244-265.
卢焕章,王中刚,吴学益,等.2005.贵州东南部的地质构造与金矿床的关系[J].地质学报,79(1):98-105.
罗福蒸.1992.贵州天柱坑头金矿矿体地质控矿构造及成矿预测的初步研究[R].贵州工学院.
毛光周,华仁民,高剑锋,赵葵东,龙光明,陆慧娟,姚军明.2006.江西金山金矿床含金黄铁矿的稀土元素和微量元素特征[J].矿床地质,25(4):412-426.
毛景文,李红艳.1997.江南古陆某些金矿床成因讨论[J].地球化学,26(5):71-81.
邱正杰,范宏瑞,丛培章,等.2015,造山型金矿床成矿过程研究进展[J].矿床地质,34(1):21-38.
唐文春,朱汇派.2008.新康猫金矿床热液矿物微量元素地球化学特征及其成因探讨[J].矿物岩石,28(4):64-70.
陶平,王尚彦,戴传固,等.2005.黔东地区金矿床类型及其基本特征[J].贵州地质,22(4):229-235.
田洪德,黄道光,余清平.2011.黔东南天柱县坑头金矿地质特征及成因分析[J].贵州地质,(4):265-271.
王尚彦,张立新,陶平,戴传固,况顺达,王敏.2006.贵州东部石英脉型金矿地质特征和成矿作用[J].贵州地质,23(1):36-43.
王孝磊,周金城,陈昕,等.2017.江南造山带的形成与演化[J].矿物岩石地球化学通报,36(5):714-735.
吴学益,卢焕章,吕古贤,等.2006.黔东南锦屏一天柱地区构造控岩控金特征模拟实验及其力学分析[J].大地构造与成矿学,30(3):355-368.
杨光忠.2006.黔东南地区热液型金矿的成矿作用及其模式[J].贵州地质,23(3):197-202.
杨瑞东,张晓东,刘玲,等.2009.贵州锦屏新元古界青白口系下江群稀土、微量元素分布特征—探讨金的来源问题[J].地质学报,83(4):505-514
杨瑞东,张晓东,刘玲,袁世婷,许利群.2009.贵州锦屏新元古界青白口系下江群稀土、微量元素分布特征[J].地质学报,83(4):505-514.
余大龙,周珍国,陶红.1991.黔东金头金矿矿床地质及包裹体特征初探[J].贵州地质,(3):241-251.
张杰,余大龙,张先煜,杨勇俊.1998.贵州天柱磨山-油麻坳金矿化带岩石矿物地球化学研究[J].地质与勘探,34(2):30-36.
张晓东,杨瑞东,刘玲,魏怀瑞.2012.贵州锦屏新元古界下江群元素地球化学特征及其与金矿的关系[J].地质学报,86(2):258-268.
张晓东,杨瑞东,王伟,魏怀瑞.2011.黔东南平秋金矿微量与稀土元素地球化学特征及意义[J].矿物岩石,31(1):63-69.
朱笑青,王甘露,卢焕章,等.2006.黔东南金矿形成时代的确定兼论湘黔加里东金矿带[J].中国地质,33(5):1092-1099.
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