新疆乌恰县加斯铅锌铜矿区地球化学特征及找矿方向
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摘要
阐述了加斯铅锌铜矿区域地质、地球化学背景,分析了矿区成矿地质条件及地球化学特征。在研究矿区1∶20万、1∶5万水系沉积物测量成果的基础上,采用1∶2.5万沟系次生晕地球化学测量方法,圈定了以Cu、Pb、Zn、Ag等为主的综合异常。通过对沟系次生晕地球化学特征、相关性的分析,认为矿区Pb、Zn、Cu、Ag等含量高,变异系数大,局部富集特征明显,为矿区主要成矿元素及矿化伴生元素,其中H-3~#、H-4~#综合异常规模较大、峰值高、浓集中心和浓度分带特征明显,两者处于杨叶铜矿带上,与花园式砂岩型铜矿具有相似的成矿地质条件,为寻找该类型铜矿较有利的异常区。通过地表工程揭露,在H-4~#综合异常范围内发现了Ⅰ~#铜矿体,在H-3~#综合异常西侧发现了Ⅱ~#铜矿化体,显示了矿区具有较好的找矿前景。依据矿区沟系次生晕地球化学异常特征及所处地质环境,进一步讨论了矿区找矿方向,为在该区进一步开展铅锌铜找矿勘探工作提供了可靠依据。
The regional geological background and geochemcial background of Jiasi Pb-Zn-Cu mining area are discussed,besides that,the metallogenic geological conditions and geochemical characteristics of the mining area are analyzed in detail. Based on the analysis of the 1 ∶ 200 000 and 1 ∶ 50 000 stream sediment measurement data of the mining area,the comprehensive anomalies mainly for the elements of Cu,Pb,Zn and Ag of the mining area are delineated by using 1∶ 25 000 geochemical measurement method of secondary halo in gully system. The geochemical characteristics and correlation characteristics of the secondary halo in gully system are analyzed,it is show that in terms of the elements of Pb,Zn,Cu and Ag,the contents of them are higher than others,the variable coefficients of them are also larger than others,and the local enrichment characteristics is significant,they are can be regarded as the main metallogenic elements and mineralized associated elements,besides that,H-3~#and H-4~#comprehensive anomalies are both with the characteristics of relative large size and high peak value,and the concentration centers and concentration zoing characteristics of them are both obvious,they are located at the Yangye copper metallogenic belt,which metallogenic conditions are similar with the one of garden type sandstone type copper deposit,the comprehensive analysis results show that H-3~#and H-4~#comprehensive anomalies can be taken as the favorable prospecting anomaly areas of garden type sandstone type copper deposit. The surface engineering revealed show that Ⅰ~#copper ore-body is found in H-4~#comprehensive anomaly,Ⅱ~#copper mineralization body is found in the west of H-3~#comprehensive anomaly,which further indicated that the prospecting potential of the mining area is good. Based on the geochemical characteristics of secondary halo in gully system and the geological environment of the mining area,the prospecting directions of the mining area are also discussed,so as to provide some reliable reference for further conducting the prospecting and exploration works of Pb-Zn-Cu deposit in the mining area.
The regional geological background and geochemcial background of Jiasi Pb-Zn-Cu mining area are discussed,besides that,the metallogenic geological conditions and geochemical characteristics of the mining area are analyzed in detail. Based on the analysis of the 1 ∶ 200 000 and 1 ∶ 50 000 stream sediment measurement data of the mining area,the comprehensive anomalies mainly for the elements of Cu,Pb,Zn and Ag of the mining area are delineated by using 1∶ 25 000 geochemical measurement method of secondary halo in gully system. The geochemical characteristics and correlation characteristics of the secondary halo in gully system are analyzed,it is show that in terms of the elements of Pb,Zn,Cu and Ag,the contents of them are higher than others,the variable coefficients of them are also larger than others,and the local enrichment characteristics is significant,they are can be regarded as the main metallogenic elements and mineralized associated elements,besides that,H-3~#and H-4~#comprehensive anomalies are both with the characteristics of relative large size and high peak value,and the concentration centers and concentration zoing characteristics of them are both obvious,they are located at the Yangye copper metallogenic belt,which metallogenic conditions are similar with the one of garden type sandstone type copper deposit,the comprehensive analysis results show that H-3~#and H-4~#comprehensive anomalies can be taken as the favorable prospecting anomaly areas of garden type sandstone type copper deposit. The surface engineering revealed show that Ⅰ~#copper ore-body is found in H-4~#comprehensive anomaly,Ⅱ~#copper mineralization body is found in the west of H-3~#comprehensive anomaly,which further indicated that the prospecting potential of the mining area is good. Based on the geochemical characteristics of secondary halo in gully system and the geological environment of the mining area,the prospecting directions of the mining area are also discussed,so as to provide some reliable reference for further conducting the prospecting and exploration works of Pb-Zn-Cu deposit in the mining area.
引文
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[3]刘增仁,田培仁,祝新友,等.新疆乌拉根铅锌矿成矿地质特征及成矿模式[J].矿产勘查,2011(6):669-680.
[4]《新疆地层表》编写组.西北地区区域地层表[M].北京:地质出版社,1976.
[5]叶雷,刘增仁,漆树基,等.新疆康西铅锌矿地质特征及成矿潜力[J].矿产勘查,2014(3):422-430.
[6]刘熠,师庆三,冯伟,等.沙立它克能托铜矿矿床地质特征浅析[J].西部探矿工程,2015,27(10):162-164.
[7]韩风彬,刘增仁,陈正乐,等.新疆乌拉根铅锌矿床S、Pb同位素特征及其地质意义[J].矿床地质,2010(S):441-442.
[8]谢世业,莫江平,杨建功,等.新疆乌恰县乌拉根新生代热卤水喷流沉积铅锌矿地质特征及成矿模式[J].矿床地质,2002(S):495-498.
[9]谢世业,莫江平,杨建功,等.新疆乌恰县乌拉根新生代热卤水喷流沉积铅锌矿成因研究[J].矿产与地质,2003,17(1):11-16.
[10]祝新友,王京彬,王玉杰,等.新疆萨热克铜矿与盆地卤水作用有关的大型矿床[J].矿产勘查,2011(1):28-35.
[11]辛江.新疆乌恰县杨叶砂岩型铜矿地质特征及成因浅析[J].矿床地质,2010(S):393-394.