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黄金科学技术 ›› 2021, Vol. 29 ›› Issue (4): 500-509.doi: 10.11872/j.issn.1005-2518.2021.04.203

• 矿产勘查与资源评价 • 上一篇    

广西罗城县记洞湾矿区地电化学提取法寻找隐伏锡铜多金属矿的研究及找矿预测

王宇慧1(),罗先熔1(),何旺1,王东2,汤国栋1,商振城1   

  1. 1.桂林理工大学地球科学学院,广西隐伏金属矿产勘查重点实验室,广西 桂林 541004
    2.广西壮族自治区地震局,广西 南宁 530015
  • 收稿日期:2020-11-26 修回日期:2021-04-27 出版日期:2021-08-31 发布日期:2021-10-08
  • 通讯作者: 罗先熔 E-mail:2445885301@qq.com;lxr811@glut.edu.cn
  • 作者简介:王宇慧(1995-),女,山西晋城人,硕士研究生,从事勘查地球化学研究工作。2445885301@qq.com
  • 基金资助:
    国家重点研发计划项目“深部铀成矿信息识别技术研究”(2017YFC0602604HT02);“华南热液型铀矿基地深部探测技术示范”(2017YFC0602600)

Research and Prospecting Prediction of Concealed Tin-Copper Polymetallic Deposit by Geo⁃electrochemical Extraction Method in Jidongwan Mining Area of Luocheng County,Guangxi

Yuhui WANG1(),Xianrong LUO1(),Wang HE1,Dong WANG2,Guodong TANG1,Zhencheng SHANG1   

  1. 1.Guangxi Key Laboratory of Hidden Metal Mineral Exploration,College of Earth Sciences,Guilin University of Technology,Guilin 541004,Guangxi,China
    2.Guangxi Zhuang Autonomous Region Seismological Bureau,Nanning 530015,Guangxi,China
  • Received:2020-11-26 Revised:2021-04-27 Online:2021-08-31 Published:2021-10-08
  • Contact: Xianrong LUO E-mail:2445885301@qq.com;lxr811@glut.edu.cn

摘要:

为了解决广西罗城县记洞湾矿区深部找矿问题,在矿区开展了地电化学提取法寻找隐伏锡铜多金属矿的研究工作。在已知矿体剖面上发现的地电化学提取异常与矿体对应度较高,能较好地反映出锡铜矿体的埋藏位置,说明地电化学提取法在罗城县记洞湾矿区找矿是可行有效的。利用因子分析和聚类分析得出4组成矿元素组合F1(Cu-Ni-Co-Pb-Zn)、F2(W-Sn)、F3(Ag-Bi)和F4(B),表明研究区地电化学异常规模大且比较集中,清晰度高,异常浓度分带明显,从而划分出A类靶区2个,B类靶区2个,各预测靶区与区内已知锡铜多金属矿体有着相似的成矿地质条件。根据地电化学研究结果,认为该研究区具备有利的成矿地质条件,是寻找隐伏锡铜多金属矿体的有利地段,具有较大的找矿潜力。

关键词: 锡铜多金属矿, 地电化学提取法, 异常特征, 找矿预测, 记洞湾矿区, 广西

Abstract:

In order to solve the deep prospecting problem of Jidongwan mining area in Luocheng County,Guangxi,the geo-electrochemical extraction method was carried out to explore concealed tin-copper polymetallic deposits.It is found that the geo-electrochemical extraction anomaly,shown above the known orebody profile,exists a high correspondence with the orebody,which can better reflect the concealed tin-copper orebody.It means that the geo-electrochemical extraction method is feasible to find tin-copper polymetallic deposits in the Jidongwan mining area,and it has good effectiveness and adaptability. The factor analysis of the geo-electrochemical extraction element data in the study area was conducted.The results show that the elements can be classified into four elemental assemblages,namely,F1(Cu-Ni-Co-Pb-Zn),F2(Ag-Bi),F3(W-Sn) and F4(B).According to the spatial distribution pattern of single elements and elemental assemblages anomalies extracted by the geo-electrochemical approach,it can be seen that each element has a high anomalous definition,intensity,and good continuity.Besides,the elemental assemblages are anomalously well-nested and clearly zoned.Based on the analysis of the spatial distribution characteristics of the geoelectric extraction elements and the combined element anomalies in the Jidongwan mining area,according to the size,intensity,morphological characteristics and the degree of agreement between the anomalies,combined with the geological location and geological characteristics and other factors, two A type target areas(A-1,A-2) and two B type target areas(B-1,B-2)are delineated in the study area.It is believed that the study area has favorable ore-forming geological conditions,which is a favorable location for searching for concealed tin-copper polymetallic orebodies,and has great prospecting potential.

Key words: tin-copper polymetallic ore, geoelectrochemical extraction method, abnormal characteristics, prospecting prediction, Jidongwan mining area, Guangxi

中图分类号: 

  • P618.2

图1

广西罗城县记洞湾矿区采样布置图D2x-泥盆系信都组;Pt31cw-四堡群文通组;∑Pt31c-四堡早期第一次辉橄岩;NPt31c-四堡早期第一次辉石岩;δPt31c-四堡早期第一次石英闪长岩;1.硅化、云英岩化;2.角度不整合界线;3.正断层;4.逆断层;5.地电采样点位"

图2

广西罗城县记洞湾矿区0线地质、地电异常综合剖面图1.闪长岩;2.变质砂岩;3.断层破碎岩;4.断层;5.矿体"

图3

广西罗城县记洞湾矿区地电化学异常平面图"

图4

广西罗城县记洞湾矿区地电提取元素R型聚类图谱"

表1

R型因子分析正交因子载荷矩阵"

元素成分矩阵a旋转后的成分矩阵b
成分1成分2成分3成分4成分1成分2成分3成分4
Sn-0.473-0.0140.533-0.100-0.287-0.1880.625-0.094
Cu0.721-0.2370.077-0.3490.8030.161-0.028-0.181
Pb0.7090.094-0.0760.1920.4860.429-0.2400.276
Zn0.659-0.5060.175-0.1600.857-0.0860.0630.041
Ag0.5190.561-0.0480.0630.1300.736-0.1660.065
Bi0.3730.7100.263-0.1580.0280.8240.189-0.147
B0.145-0.1450.1900.8950.019-0.0160.0560.936
W0.004-0.0030.850-0.0020.1220.0990.8260.121
Co0.7770.1350.0010.1210.5480.506-0.1720.224
Ni0.857-0.2440.035-0.0280.8410.223-0.1320.146

图5

旋转后空间中的成分图"

图6

广西罗城县记洞湾矿区地电组合异常平面图1.泥盆系信都组;2.四堡群文通组;3.四堡早期第一次辉橄岩;4.四堡早期第一次辉石岩;5.四堡早期第一次石英闪长岩;6.硅化和云英岩化;7.角度不整合界线;8.正断层;9.逆断层;10.地电采样点位"

图7

广西罗城县记洞湾矿区靶区预测图D2x-泥盆系信都组;Pt31cw-四堡群文通组;∑Pt31c-四堡早期第一次辉橄岩;NPt31c-四堡早期第一次辉石岩;δPt31c-四堡早期第一次石英闪长岩;1.硅化、云英岩化;2.角度不整合界线;3.正断层;4.逆断层;5.地电采样点位;6.A类靶区;7.B类靶区"

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