云南小寨铜矿苏家箐矿段地气微粒特征
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摘要
针对云南小寨铜矿苏家箐矿段地气采样所获得的16个地气微粒样品进行透射电镜观察分析,结果表明:地气中微粒呈现纳米级,大小为10nm到300nm不等,多为微粒聚合体,单体较少。微粒的形状多样,有似六边形、似椭球状、球状、不规则状等。微粒中含有成矿元素Cu以及伴生元素Fe,Pb,Zn,Mn,Co等,如SJQ-2A微粒中Pb含量为62.9%,SJQ-5B微粒中Co含量为24.1%。Cu出现频次很高,其质量分数也较高,如SJQ-1B和SJQ-6微粒中Cu含量分别为64.0%和73.3%。推测含金属微粒来源于深部隐伏矿体,金属微粒含有丰富的矿体信息。通过对比7个不同矿床的地气微粒特征,发现矿床类型不同其微粒特征(如种类、成分、形态、大小等)有较大差异;而与小寨铜矿苏家箐矿段具有相似地质环境的矿床,其地气微粒特征具有较大的相似性。微粒的元素组成与地下深处矿体具有较好的对应关系,无疑对该矿区今后的地质找矿具有指导意义。
Eight sampling points with 25 meters interval were evenly arranged in order to collect geogas samples along the No.86 prospecting line in the Sujiajing section of Xiaozhai copper mine in Yunnan Province.The characteristics of the geogas particles are analyzed by transmission electronic microscope.It is revealed that most of geogas particles are in the form of nanoscale particle aggregations with a size generally ranging from 10 nm to 300 nm.The shape of geogas particles are various,such as hexagon,ellipsoid,spherical,irregular and so on.These particles contain the element of Cu and associated with elements of Fe,Pb,Zn,Mn,Co,etc.The Pb content in the particle of SJQ-2 Ais 62.9%;the Co content in the particle of SJQ-5 Bis 24.1%.High concentration of Cu is only occurred in certain geogas particles.The Cu content in the particles of SJQ-1 Band SJQ-6 Bis 64.0% and 73.3%,respectively.It is considered that the metal-bearing particles are derived from deep concealed ore bodies and the metal-bearing particles contain certain rich mineral information.The element composition of geogas particle shows a good correlation with metal ore bodies and surrounding rocks and provides guiding significance for the future geological prospecting in the mine.Comparison of characteristics of the geogas particles with seven different deposits shows that these particles have many differences in term of types,composition,morphology and size.While comparison of five deposits similar to Sujiaqing ore block of Xiaozhai copper deposit shows that there is a great similarity in element composition of geogas particles in these deposits.
Eight sampling points with 25 meters interval were evenly arranged in order to collect geogas samples along the No.86 prospecting line in the Sujiajing section of Xiaozhai copper mine in Yunnan Province.The characteristics of the geogas particles are analyzed by transmission electronic microscope.It is revealed that most of geogas particles are in the form of nanoscale particle aggregations with a size generally ranging from 10 nm to 300 nm.The shape of geogas particles are various,such as hexagon,ellipsoid,spherical,irregular and so on.These particles contain the element of Cu and associated with elements of Fe,Pb,Zn,Mn,Co,etc.The Pb content in the particle of SJQ-2 Ais 62.9%;the Co content in the particle of SJQ-5 Bis 24.1%.High concentration of Cu is only occurred in certain geogas particles.The Cu content in the particles of SJQ-1 Band SJQ-6 Bis 64.0% and 73.3%,respectively.It is considered that the metal-bearing particles are derived from deep concealed ore bodies and the metal-bearing particles contain certain rich mineral information.The element composition of geogas particle shows a good correlation with metal ore bodies and surrounding rocks and provides guiding significance for the future geological prospecting in the mine.Comparison of characteristics of the geogas particles with seven different deposits shows that these particles have many differences in term of types,composition,morphology and size.While comparison of five deposits similar to Sujiaqing ore block of Xiaozhai copper deposit shows that there is a great similarity in element composition of geogas particles in these deposits.
引文
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[12]Wei X J,Cao J J,Holub R F.TEM study of geogas-transported nanoparticles from the Fankou lead-zinc deposit,Guangdong Province,South China[J].Journal of Geochemical Exploration,2013,128:124-135.
[13]曹建劲,刘昶,张鹏,等.云南会泽大黑山玄武岩铜矿床地气微粒特征[J].金属矿山,2011,6:113-115.
[14]刘昶,曹建劲,柯红玲.滇东北永胜得铜矿床地气微粒特征[J].化工矿产地质,2011,33(4):201-207.
[15]曹建劲,李映葵,刘昶,等.贵州关岭丙坝铜矿床地气微粒特征[J].吉林大学学报(地球科学版),2017,(01):95-105.
[16]Luo S Y,Cao J J,Yan H B,et al.TEM observations of particles based on sampling in gas and soil at the Dongshengmiao polymetallic pyrite deposit,Inner Mongolia,Northern China[J].Journal of Geochemical Exploration,2015,158:95-111.
[17]李有明,王远航,赵禹.云南滇东北小寨铜矿控矿地质特征及找矿潜力分析-小寨铜矿[J].中华民居,2011,(10):55-56.
[18]蒋小芳,陈建国.云南省小寨地区玄武岩型铜矿矿床特征及成矿机理研究[J].矿产与地质,2004,18(6):528-531.
[19]陶琰,胡瑞忠,漆亮,等.云南金宝山铂钯矿Sr-Nd-Os同位素组成:岩浆成因及演化分析[J].矿物岩石,2010,30(02):60-67.
[20]钱壮志,徐翠玲,章正军,等.滇东北地区峨眉山玄武岩铜矿成矿物质来源[J].矿物岩石,2007,(01):78-82.
[21]Hu G,Cao JJ,Hopke P K.Study of Carbon-Bearing Particles in Ascending Geogas Flows in the Dongshengmiao Polymetallic Pyrite Deposit,Inner Mongolia,China[J].Resource Geology,2014,65:13-26.
[22]Cao J J,Li Y K,Jiang T,et al.Sulfur-containing particles emitted by concealed sulfide ore deposits:an unknown source of sulfur-containing particles in theatmosphere[J].Atmospheric Chemistry&Physics,2015,14(21):28 299-28 331.
(1)赵波,高宏光.云南省鲁甸小寨地区铜矿评价成果报告[R].云南:云南省地质调查院,2006.
[2]Malmqvist L,Kristiansson K.Experiment evidence for an ascending microflow of geogas in the ground[J].Earth and Planetary Science Letters,1984,70:407-416.
[3]童纯菡,梁兴中,李巨初.地气测量研究及在东季金矿的实验[J].物探与化探,1992,16(6):445-451.
[4]王学求,谢学锦,卢荫庥.地气动态提取技术的研制及在寻找隐伏矿上的初步试验[J].物探与化探,1995,19(3):162-171.
[5]葛良全,童纯菡,贺振华,等.隐伏断裂上方地气异常特征及其机理研究[J].成都理工学院学报,1997,(03):33-39.
[6]施俊法,吴传璧.金属微粒迁移新机制及其意义综述[J].地质科技情报,1998,(04):82-87.
[7]汪明启,高玉岩.利用铅同位素研究金属矿床地气物质来源:甘肃蛟龙掌铅锌矿床研究实例[J].地球化学,2007,(04):391-399.
[8]童纯菡,李巨初,葛良全,等.地壳内上升气流对物质的迁移及地气测量原理[J].矿物岩石,1997,(03):84-89.
[9]Cao J,Hu R,Liang Z,et al.TEM observation of geogas-carried particles from the Changkeng concealed gold deposit,Guangdong Province,South China[J].Journal of Geochemical Exploration,2009,101(3):247-253.
[10]曹建劲.地气微粒特征和元素含量结合探测隐伏矿床技术[J].金属矿山,2009,2:1-4.
[11]曹建劲,刘昶,熊志华,等.贵州铜厂河铜矿上升气流微粒[J].中国科学,2011,41(8):1 109-1 115.
[12]Wei X J,Cao J J,Holub R F.TEM study of geogas-transported nanoparticles from the Fankou lead-zinc deposit,Guangdong Province,South China[J].Journal of Geochemical Exploration,2013,128:124-135.
[13]曹建劲,刘昶,张鹏,等.云南会泽大黑山玄武岩铜矿床地气微粒特征[J].金属矿山,2011,6:113-115.
[14]刘昶,曹建劲,柯红玲.滇东北永胜得铜矿床地气微粒特征[J].化工矿产地质,2011,33(4):201-207.
[15]曹建劲,李映葵,刘昶,等.贵州关岭丙坝铜矿床地气微粒特征[J].吉林大学学报(地球科学版),2017,(01):95-105.
[16]Luo S Y,Cao J J,Yan H B,et al.TEM observations of particles based on sampling in gas and soil at the Dongshengmiao polymetallic pyrite deposit,Inner Mongolia,Northern China[J].Journal of Geochemical Exploration,2015,158:95-111.
[17]李有明,王远航,赵禹.云南滇东北小寨铜矿控矿地质特征及找矿潜力分析-小寨铜矿[J].中华民居,2011,(10):55-56.
[18]蒋小芳,陈建国.云南省小寨地区玄武岩型铜矿矿床特征及成矿机理研究[J].矿产与地质,2004,18(6):528-531.
[19]陶琰,胡瑞忠,漆亮,等.云南金宝山铂钯矿Sr-Nd-Os同位素组成:岩浆成因及演化分析[J].矿物岩石,2010,30(02):60-67.
[20]钱壮志,徐翠玲,章正军,等.滇东北地区峨眉山玄武岩铜矿成矿物质来源[J].矿物岩石,2007,(01):78-82.
[21]Hu G,Cao JJ,Hopke P K.Study of Carbon-Bearing Particles in Ascending Geogas Flows in the Dongshengmiao Polymetallic Pyrite Deposit,Inner Mongolia,China[J].Resource Geology,2014,65:13-26.
[22]Cao J J,Li Y K,Jiang T,et al.Sulfur-containing particles emitted by concealed sulfide ore deposits:an unknown source of sulfur-containing particles in theatmosphere[J].Atmospheric Chemistry&Physics,2015,14(21):28 299-28 331.
(1)赵波,高宏光.云南省鲁甸小寨地区铜矿评价成果报告[R].云南:云南省地质调查院,2006.