湖南大根垄钨多金属矿地电提取法机理
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摘要
笔者以湖南大根垄钨多金属矿为试验研究区,以20m点距在已知矿体上方取土壤样,并按照24h提取时间、1 000mL HNO3提取液、50cm电极间距等工作条件进行了地电提取试验。结果表明,地电提取前后土壤中的元素含量变化不大,被提取到的金属元素应属土壤金属总量的一部分。次生晕与地电提取的异常形态对比发现:Co、Ni较清晰,W次之,Cr无异常;元素的异常特征主要取决于土壤中该元素的活性形式所占比例。综合分析认为地电提取异常与矿体的相对位置有关:矿体的下坡位置以及控矿断裂附近容易形成异常,距离原生矿体太近则会对异常有明显干扰。在本矿区,矿体风化程度越高对Co、Ni的地电提取异常越有利;其异常宽度一般比次生晕窄。
In order to discover the mechanism and anomaly origin of geoelectrochemical extraction,an experimental study has already been conducted in Dagenlong Tungsten deposit in Hunan.We take soil samples by interval of 20 m,and implement the geoelectrochemical extraction under the working conditions of the following three:the extracting time is 24 hours,the dose of HNO3 is 1 000 mL,and the distance between two electrodes is 50 cm.The result shows that the variation of metal element content is insignificant in soil after extracting,and the extracted metal elements are proportional to thewhole metal in the soil.The morphology comparison of anomaly between the geoelectrochemical extraction and the secondary halo shows that Ni and Co is clear,W is less,and Cr has no anomaly.The characteristics of anomaly mainly depend on the content proportion of element which is active in soil.Comprehensive analysis shows that the anomalies of geoelectrochemical extraction related to the relative position of the ore body.It is easy to form anomaly at downhill position,and distance too close to native ore body have obvious interference to anomaly.In this ore deposit area,the higher weathering degree,the better Co,Ni anomaly of geoelectrochemical extraction.The anomaly width of geoelectrochemical extraction is smaller than secondary halo.
In order to discover the mechanism and anomaly origin of geoelectrochemical extraction,an experimental study has already been conducted in Dagenlong Tungsten deposit in Hunan.We take soil samples by interval of 20 m,and implement the geoelectrochemical extraction under the working conditions of the following three:the extracting time is 24 hours,the dose of HNO3 is 1 000 mL,and the distance between two electrodes is 50 cm.The result shows that the variation of metal element content is insignificant in soil after extracting,and the extracted metal elements are proportional to thewhole metal in the soil.The morphology comparison of anomaly between the geoelectrochemical extraction and the secondary halo shows that Ni and Co is clear,W is less,and Cr has no anomaly.The characteristics of anomaly mainly depend on the content proportion of element which is active in soil.Comprehensive analysis shows that the anomalies of geoelectrochemical extraction related to the relative position of the ore body.It is easy to form anomaly at downhill position,and distance too close to native ore body have obvious interference to anomaly.In this ore deposit area,the higher weathering degree,the better Co,Ni anomaly of geoelectrochemical extraction.The anomaly width of geoelectrochemical extraction is smaller than secondary halo.
引文
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[9]费锡铨.电提取离子法[M].北京:地质出版社,1992.Fei Xiquan.Electric Extraction Ionic Method[M].Beijing:Geological Publishing House,1992.
[10]高云龙.地电化学提取铀及其它金属的研究[J].中国核科技报告,1990(增刊4):34.Gao Yunlong.Using Geoelectrochemical Technique to Extract Uranium and Other Metals[J].China Nuclear Science and Technology Report,1990(Sup.4):34.
[11]李金铭,卢军,严良俊,等.地电化学提取法的理论与实验研究[J].地学前缘,1998,5(1/2):208-216.Li Jinming,Lu Jun,Yan Liangjun,et al.Theoretical and Experimental Study for Geoelectrochemical Extraction Method[J].Earth Science Frontiers,1998,5(1/2):208-216.
[12]王文龙,肖力,路彦明.电提取离子法中离子来源深度初探[J].黄金地质,1999,23(5):56-58.Wang Wenlong,Xiao Li,Lu Yanming.Discussion on the Source Depth of Ion by Electric Extraction Ionic Method[J].Gold Geology,1999,23(5):56-58.
[13]付立春,罗先熔,欧阳菲.地电化学提取技术条件的系统对比研究[J].地质与勘探,2006,42(6):62-66.Fu Lichun,Luo Xianrong,Ouyang Fei.Contrast Research of Geoelectrochemical Extraction Technique Condition[J].Geology and Prospection,2006,42(6):62-66.
[14]费锡铨.关于“电提取离子法”若干问题的探讨[J].地质与勘探,1985(7):58-60.Fei Xiquan.Discussion on Several Problems About Electric Extraction Ionic Method[J].Geology and Prospection,1985(7):58-60.
[15]关连珠.普通土壤学[M].北京:中国农业大学出版社,2007.Guan Lianzhu.Ordinary Soil Science[M].Beijing:China Agricultural University Press,2007.
[16]刘英俊.元素地球化学[M].北京:科学出版社,1984.Liu Yingjun.Geochemistry of Element[M].Beijing:Science Press,1984.
[2]罗先熔,康明,欧阳菲,等.地电化学成晕机制、方法技术及找矿研究[M].北京:地质出版社,2007:91-201.Luo Xianrong,Kang Ming,Ouyang Fei,et al.HaloForming Mechanism,Methodology and Application of Geoelectrochemical Technology in Exploration for Mineral Deposits[M].Beijing:Geological Publishing House,2007:91-201.
[3]罗先熔.地电化学成晕机制、方法技术及找矿研究[D].合肥:合肥工业大学,2005.Luo Xianrong.The Mechanism of Electrogeochemical Halo-Formation and the Application of Electrogeochemical Method to Exploration of Metallic Ore Deposits[D].Hefei:Hefei University of Technology,2005.
[4]刘吉敏.一种新的隐伏矿勘查技术:地电化学法的现状和展望[J].物探与化探,1993,17(1):33-41.Liu Jimin.Present State and Perspectives for a New Prospection Method for Concealed Deposits:Geoelectrochemical Exploration[J].Geophysical&Geological Exploration,1993,17(1):33-41.
[5]文美兰,罗先熔,熊健,等.地电化学法在南澳大利亚寻找隐伏金矿的研究[J].地质与勘探,2010,46(1):153-159.Wen Meilan,Luo Xianrong,Xiong Jian,et al.Electro Geochemical Method in the Search of Concealed Gold Deposits in South Australia[J].Geology and Exploration,2010,46(1):153-159.
[6]康明,罗先熔.地电化学方法的改进及应用效果[J].地质与勘探,2003,39(5):63-66.Kang Ming,Luo Xianrong.Improvement and Applied Results of Geo-Electrical Chemistry Methods[J].Geology and Exploration,2003,39(5):63-66.
[7]康明,罗先熔,庞保成,等.地电化学法在广西横县泰富金矿的应用效果[J].桂林工学院学报,2004(1):24-27.Kang Ming,Luo Xianrong,Pang Baocheng,et al.Application of Geoelectrochemical Method in Taifu Gold Deposit in Heng County,Guangxi[J].Journal of Guilin Institute of Technology,2004(1):24-27.
[8]陈希泉,罗先熔,刘莉文,等.地球电化学勘查法寻找不同景观区隐伏金矿的研究[J].矿产与地质,2007(1):70-74.Chen Xiquan,Luo Xianrong,Liu Liwen,et al.Study of Exploring Concealed Gold Deposits in Different Landscape Areas by Geo-Electrochemical Exploration Methods[J].Mineral Resources and Geology,2007(1):70-74.
[9]费锡铨.电提取离子法[M].北京:地质出版社,1992.Fei Xiquan.Electric Extraction Ionic Method[M].Beijing:Geological Publishing House,1992.
[10]高云龙.地电化学提取铀及其它金属的研究[J].中国核科技报告,1990(增刊4):34.Gao Yunlong.Using Geoelectrochemical Technique to Extract Uranium and Other Metals[J].China Nuclear Science and Technology Report,1990(Sup.4):34.
[11]李金铭,卢军,严良俊,等.地电化学提取法的理论与实验研究[J].地学前缘,1998,5(1/2):208-216.Li Jinming,Lu Jun,Yan Liangjun,et al.Theoretical and Experimental Study for Geoelectrochemical Extraction Method[J].Earth Science Frontiers,1998,5(1/2):208-216.
[12]王文龙,肖力,路彦明.电提取离子法中离子来源深度初探[J].黄金地质,1999,23(5):56-58.Wang Wenlong,Xiao Li,Lu Yanming.Discussion on the Source Depth of Ion by Electric Extraction Ionic Method[J].Gold Geology,1999,23(5):56-58.
[13]付立春,罗先熔,欧阳菲.地电化学提取技术条件的系统对比研究[J].地质与勘探,2006,42(6):62-66.Fu Lichun,Luo Xianrong,Ouyang Fei.Contrast Research of Geoelectrochemical Extraction Technique Condition[J].Geology and Prospection,2006,42(6):62-66.
[14]费锡铨.关于“电提取离子法”若干问题的探讨[J].地质与勘探,1985(7):58-60.Fei Xiquan.Discussion on Several Problems About Electric Extraction Ionic Method[J].Geology and Prospection,1985(7):58-60.
[15]关连珠.普通土壤学[M].北京:中国农业大学出版社,2007.Guan Lianzhu.Ordinary Soil Science[M].Beijing:China Agricultural University Press,2007.
[16]刘英俊.元素地球化学[M].北京:科学出版社,1984.Liu Yingjun.Geochemistry of Element[M].Beijing:Science Press,1984.