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物探与化探  2024, Vol. 48 Issue (5): 1232-1246    DOI: 10.11720/wtyht.2024.0031
  地质调查·资源勘查 本期目录 | 过刊浏览 | 高级检索 |
东昆仑茫崖河东地区地球化学钴异常与含矿地质体的响应
马文君1,2(), 谢海林1,2(), 郭伟1,2, 李斐斐1,2, 滕晓燕1,2, 陈苏龙1,2, 李少南1,2, 刘秀峰1,2, 马忠英1,2, 马海云1,2
1.青海省第一地质勘查院,青海 海东 810600
2.青海省柴达木周缘大型超大型金矿深部探测技术创新工程技术研究中心,青海 海东 810600
Response of the geochemical anomalies of cobalt to ore-bearing geological bodies in the Mangyahedong area, eastern Kunlun
MA Wen-Jun1,2(), XIE Hai-Lin1,2(), GUO Wei1,2, LI Fei-Fei1,2, TENG Xiao-Yan1,2, CHEN Su-Liong1,2, LI Shao-Nan1,2, LIU Xiu-Feng1,2, MA Zhong-Ying1,2, MA Hai-Yun1,2
1. The First Geological Exploration Institute of Qinghai Province, Haidong 810600, China
2. Innovative Engineering Technology Research Center for Deep Exploration Technology of Large and Superlarge Gold Deposits at the Periphery of the Qaidam Basin in Qinghai Province, Haidong 810600, China
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摘要 

近年来,在东昆仑地区以地质找矿为目的开展的大比例尺1:2.5万地球化学测量工作,具有快速、准确定位异常源的特征,在找矿勘查中被广泛应用,并取得了良好的找矿成果。通过开展1:2.5万水系沉积物测量工作,在东昆仑茫崖河东地区圈出了以Cu、Co、Ni等元素组合为主的综合异常12处,其中以Co为主的综合异常有1处,各元素异常套合较好,相对规模大,异常强度高,具有明显的浓度分带。Co异常与奥陶系祁漫塔格群地层关系密切,区位一致性好。经异常查证,在GA16、GA26、GA11、GA39等异常内发现4条钴矿化带,带内圈定出了3条钴矿体及多条矿化体。综合分析认为该区具有优越的成矿地质条件、良好的地球化学特征,取得了较好的找矿效果,具备大中型钴矿的找矿潜力。
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马文君
谢海林
郭伟
李斐斐
滕晓燕
陈苏龙
李少南
刘秀峰
马忠英
马海云
关键词 ： 钴异常,  祁漫塔格群,  找矿前景,  茫崖河东,  东昆仑    
Abstract：

Over recent years, large-scale geochemical surveys on a scale of 1:25,000 have been conducted in the eastern Kunlun region for geological prospecting. These surveys, characterized by the rapid and accurate location of anomaly sources, have been widely applied in mineral explorations, yielding encouraging mineral prospecting results. Using 1:25,000-scale stream sediment surveys, this study delineated 12 geochemical integrated anomalies of the element associations of Cu, Co, and Ni in the Hedong area, Mangya City, eastern Kunlun. These anomalies include one integrated anomaly dominated by Co, where various element anomalies exhibit high-degree overlap, relatively large scales, high intensity, and distinct concentration zoning. The Co anomaly is closely associated with the Ordovician Qimantag Group, demonstrating a high degree of spatial consistency. The subsequent anomaly verification reveals four cobalt mineralized zones within anomalies GA16, GA26, GA11, and GA39, with three ore bodies and multiple mineralized bodies of cobalt being identified within the mineralized zones. The comprehensive analysis indicates that the eastern Kunlun region enjoys excellent metallogenic geological conditions and favorable geochemical characteristics, with promising prospecting results having been achieved. Therefore, this region has the prospecting potential of medium to large-scale cobalt deposits.
Key words： cobalt anomaly    Qimantag Group    prospecting prospects    Hedong area of Mangya City    eastern Kunlun
收稿日期: 2024-01-22      修回日期: 2024-03-29      出版日期: 2024-10-20
ZTFLH:  P632  
基金资助:青海省地矿局项目“青海省格尔木市长山—红卫山地区1:2.5万地球化学测量”(青地矿科[2022]32号);青海省地矿局项目“青海省格尔木市长山—红卫山地区1:2.5万地球化学测量”(青地矿科[2022]6号);“东昆仑奥陶纪钴矿成矿环境及找矿潜力”(青地矿科[2023]50号)
通讯作者: 谢海林(1968-),男,正高级工程师,长期从事地质矿产勘查及管理工作。Email:327383903@qq.com
作者简介: 马文君(1987-),男,高级工程师,从事地质矿产勘查工作。Email:mawenjun926600@163.com
引用本文:   
马文君, 谢海林, 郭伟, 李斐斐, 滕晓燕, 陈苏龙, 李少南, 刘秀峰, 马忠英, 马海云. 东昆仑茫崖河东地区地球化学钴异常与含矿地质体的响应[J]. 物探与化探, 2024, 48(5): 1232-1246.
MA Wen-Jun, XIE Hai-Lin, GUO Wei, LI Fei-Fei, TENG Xiao-Yan, CHEN Su-Liong, LI Shao-Nan, LIU Xiu-Feng, MA Zhong-Ying, MA Hai-Yun. Response of the geochemical anomalies of cobalt to ore-bearing geological bodies in the Mangyahedong area, eastern Kunlun. Geophysical and Geochemical Exploration, 2024, 48(5): 1232-1246.
链接本文:  
https://www.wutanyuhuatan.com/CN/10.11720/wtyht.2024.0031      或      https://www.wutanyuhuatan.com/CN/Y2024/V48/I5/1232
Fig.1  茫崖河东地区大地构造位置[12](a)及地质简图(b)
Fig.2  茫崖河东地区1:20万化探异常分布
Fig.3  茫崖河东地区1:5万水系沉积物化探异常分布
Fig.4  茫崖河东地区1:5万矿产地球化学调查化探异常分布
元素 异常点数 异常下限 峰值 均值 面积/km2 离差 衬度 规模 浓度分带
Co 116 20.00 367.00 34.85 23.75 31.87 1.74 41.33 外、中、内
Cu 122 60.00 192.00 105.91 27.75 30.39 1.77 49.12 外、中
Ni 116 40.00 136.00 67.72 27.15 19.37 1.69 45.88 外、中
Zn 96 100.00 510.00 141.65 17.13 61.14 1.42 24.32 外、中、内
Ag 46 100.00 2317.00 193.91 6.82 323.74 1.94 13.23 外、中、内
Pb 12 50.00 260.00 82.93 1.68 57.89 1.66 2.79 外、中、内
Sn 26 6.00 12.30 7.89 3.95 1.93 1.32 5.21 外、中、内
Au 26 2.00 6.00 2.59 4.34 0.88 1.30 5.64 外、中
Table 1  AS28-3 CuCoNi(AgZnPbSnAu)异常特征统计
Fig.5  AS28-3CuCoNi(AgZnPbSnAu)综合异常剖析
元素 样品数 平均值/10-6 中位数/10-6 变异系数 富集系数 标准离差/10-6 最小值/10-6 最大值/10-6 极差/10-6
Co 4371 18.40 11.10 1.01 1.84 18.6 3.50 527.00 523.50
Cr 4371 58.40 30.10 1.13 1.27 66.3 6.00 1004.00 998.00
Cu 4371 50.90 20.10 1.23 2.99 62.6 3.20 603.00 599.80
Ni 4371 33.10 16.70 1.18 1.32 39.1 3.50 732.00 728.50
Table 2  Cu、Co、Cr、Ni元素地球化学变量统计
Fig.6  水系沉积物元素R型聚类分析图谱
序号 特征根 特征根百
分比/%		 累积百
分比/%		 因子结构式
F1 3.8928 25.9522 25.9522 Cu0.8948Co0.9159Ni0.9537Cr0.9262
F2 2.8617 19.0779 45.0301 W0.8904Bi0.8766F0.798
F3 1.8392 12.2615 57.2916 Sb0.7909
F4 1.2113 8.0756 65.3672 Au0.9273
F5 0.9486 6.3242 71.6913 Ag-0.8415Pb-0.8028
F6 0.9022 6.0145 77.7059 Sn0.9506
Table 3  主要因子特征根及结构式
Fig.7  Cu、Co、Cr、Ni元素因子计量
Fig.8  Cu、Co、Cr、Ni在不同地质体中的含量变化
元素 特征值 Oqm1 Oqm2 Oqm3 ηγT3 γδD3 ηγT2 ξγT3 νD3 Pt1js D3m2 δοD3 C1dg γδT2 ηγPt3 δοT2 ηοD2 γδT3 全区
Co X/10-6 6.00 5.70 15.50 5.00 11.20 20.90 42.20 21.70 13.20 10.20 10.50 10.20 7.60 13.00 13.90 14.80 21.10 18.40
S/10-6 6.40 7.00 14.60 4.40 7.10 13.50 21.80 10.90 9.50 5.60 4.30 7.50 3.30 6.20 11.80 8.40 18.40 18.60
CV 1.06 1.24 0.94 0.86 0.63 0.65 0.52 0.50 0.72 0.55 0.41 0.73 0.43 0.47 0.85 0.57 0.87 1.01
Cr X/10-6 14.10 10.60 15.70 63.90 24.70 74.90 139.00 61.40 37.20 19.40 15.40 29.00 25.40 49.70 31.90 60.60 56.70 58.40
S/10-6 28.10 15.50 28.70 65.50 21.90 58.90 67.30 49.90 34.70 9.90 6.50 18.10 31.20 33.50 31.30 81.30 90.10 66.30
CV 1.98 1.47 1.82 1.02 0.89 0.79 0.48 0.81 0.93 0.51 0.42 0.62 1.23 0.68 0.98 1.34 1.59 1.13
Cu X/10-6 11.70 7.50 29.30 61.30 17.80 135.00 12.40 37.80 27.00 27.50 14.70 13.60 9.80 31.80 56.90 16.70 30.50 50.90
S/10-6 23.40 13.90 50.20 51.10 20.50 62.70 20.20 34.00 29.80 22.60 3.40 13.20 6.20 17.90 62.20 9.40 40.20 62.60
CV 2.00 1.84 1.71 0.83 1.15 0.46 1.63 0.90 1.10 0.82 0.23 0.98 0.63 0.56 1.09 0.56 1.32 1.23
Ni X/10-6 7.60 7.20 27.90 5.80 12.10 43.50 80.60 28.40 18.60 9.80 8.10 20.70 9.90 24.60 20.40 21.00 37.30 33.10
S/10-6 12.70 14.00 39.70 8.00 11.30 40.50 35.80 25.70 18.00 8.10 9.30 16.60 9.60 13.30 17.20 27.30 30.70 39.10
CV 1.66 1.95 1.42 1.40 0.94 0.93 0.44 0.91 0.97 0.83 1.15 0.80 0.97 0.54 0.84 1.30 0.82 1.18
Table 4  茫崖河东地区Co、Cr、Cu、Ni在不同地质体中的分布特征
Fig.9  Co异常分布
异常
编号		 异常
点数		 异常
下限		 异常
面积		 排序 平均值 排序 极大值 排序 衬度 排序 AD 排序 AP 排序 NAD 排序 NAP 排序 分带
区
Co-1 61 40.00 2.59 6 49.00 12 61.00 10 1.23 12 507.41 7 93.20 5 12.69 7 2.33 5 1
Co-2 24 40.00 0.78 12 50.15 10 58.30 13 1.25 10 157.36 12 31.86 9 3.93 12 0.80 9 1
Co-3 7 40.00 0.24 17 45.10 30 53.30 20 1.13 30 43.76 19 4.95 22 1.09 19 0.12 22 1
Co-4 3 40.00 0.10 24 45.73 27 49.00 28 1.14 27 19.07 24 2.39 28 0.48 24 0.06 28 1
Co-5 3 40.00 0.19 20 61.07 4 81.90 6 1.53 4 46.17 17 15.93 15 1.15 17 0.40 15 2
Co-6 58 40.00 3.04 5 47.03 21 55.10 17 1.18 21 571.31 5 85.43 6 14.28 5 2.14 6 1
Co-7 3 40.00 0.104 25 45.40 29 49.80 26 1.14 29 17.49 26 2.08 30 0.44 26 0.05 30 1
Co-8 113 40.00 4.60 2 53.69 7 81.90 5 1.34 7 987.16 2 251.65 2 24.68 2 6.29 2 2
Co-9 3 40.00 0.16 21 46.13 26 48.90 30 1.15 26 29.97 22 3.99 24 0.75 22 0.10 24 1
Co-10 26 40.00 1.11 10 45.71 28 60.20 11 1.14 28 202.60 10 25.30 12 5.07 10 0.63 12 1
Co-11 68 40.00 3.54 3 48.11 16 59.90 12 1.20 16 682.07 3 115.03 4 17.05 3 2.88 4 1
Co-12 2 40.00 0.08 29 44.30 31 45.00 31 1.11 31 13.76 30 1.34 31 0.34 30 0.03 31 1
Co-13 5 40.00 0.20 19 48.76 13 57.20 15 1.22 13 39.25 21 7.05 19 0.98 21 0.18 19 1
Co-14 10 40.00 0.34 15 47.65 18 55.80 16 1.19 18 64.12 15 10.29 18 1.60 15 0.26 18 1
Co-15 6 40.00 0.28 16 46.15 25 50.00 25 1.15 25 51.51 16 6.86 20 1.29 16 0.17 20 1
Co-16 22 40.00 1.20 9 46.35 24 57.80 14 1.16 24 223.43 9 30.61 10 5.59 9 0.77 10 1
Co-17 11 40.00 0.83 11 48.69 14 54.10 18 1.22 14 160.96 11 28.73 11 4.02 11 0.72 11 1
Co-18 42 40.00 2.12 7 61.20 3 527.00 1 1.53 3 519.93 6 180.11 3 13.00 6 4.50 3 3
Co-19 26 40.00 1.29 8 49.55 11 89.30 3 1.24 11 254.84 8 49.12 8 6.37 8 1.23 8 2
Co-20 3 40.00 0.12 22 47.10 20 49.00 29 1.18 20 21.90 23 3.30 26 0.55 23 0.08 26 1
Co-21 13 40.00 0.63 13 47.67 17 53.10 21 1.19 17 120.90 13 19.45 14 3.02 13 0.49 14 1
Co-22 2 40.00 0.08 27 46.40 23 51.70 23 1.16 23 15.17 29 2.09 29 0.38 29 0.05 29 1
Co-23 65 40.00 3.16 4 46.64 22 53.40 19 1.17 22 588.95 4 83.85 7 14.72 4 2.10 7 1
Co-24 5 40.00 0.20 18 55.92 6 78.10 8 1.40 6 45.42 18 12.93 17 1.14 18 0.32 17 1
Co-25 2 40.00 0.08 28 48.15 15 49.10 27 1.20 15 15.69 27 2.66 27 0.39 27 0.07 27 1
Co-26 2 40.00 0.06 30 60.60 5 72.20 9 1.52 5 15.21 28 5.17 21 0.38 28 0.13 21 1
Co-27 2 40.00 0.11 23 94.35 1 107.00 2 2.36 1 42.94 20 24.73 13 1.07 20 0.62 13 2
Co-28 1 40.00 0.02 31 88.90 2 88.90 4 2.22 2 8.33 31 4.58 23 0.21 31 0.11 23 2
Co-29 2 40.00 0.09 26 50.55 9 53.00 22 1.26 9 18.14 25 3.79 25 0.45 25 0.09 25 1
Co-30 120 40.00 6.08 1 53.54 8 81.40 7 1.34 8 1301.69 1 329.25 1 32.54 1 8.23 1 2
Co-31 6 40.00 0.50 14 47.15 19 50.70 24 1.18 19 93.57 14 14.19 16 2.34 14 0.35 16 1
Table 5  茫崖河东地区Co异常特征
Fig.10   GA 甲 2 26Co综合异常剖析
单元素
异常号		 异常下
限/10-6		 异常点数 面积/
km2		 异常平
均值/10-6		 峰值/10-6 衬度 异常规模 浓度分带
Co-18 40.00 42 2.12 61.20 527.00 1.53 3.25 内、中、外
Ni-50 50.00 44 2.24 98.79 249.00 1.98 4.44 内、中、外
Cu-25 80.00 46 2.03 145.07 211.00 1.81 3.67 中、外
Cr-46 130.00 39 1.93 181.67 231.00 1.40 2.70 外
As-59 30.00 5 0.26 218.18 460.00 7.27 1.89 内、中、外
Mo-80 2.00 3 0.17 9.38 14.20 4.69 0.78 内、中、外
Table 6  Comprehensive abnormal eigenvalue statistics of G GA 甲 2 26Co
Fig.11   GA 甲 2 16Cu综合异常剖析
单元素异常号 异常下限 异常点数 面积/km2 异常平均值 峰值 衬度 异常规模 浓度分带
Cu-12 80.00 97 4.24 161.74 367.00 2.02 8.57 外、中、内
Ni-32 50.00 80 3.74 88.92 130.00 1.78 6.66 外、中
Co-11 40.00 68 3.50 48.11 59.90 1.20 4.25 外
Co-15 40.00 6 0.28 46.15 50.00 1.15 0.17 外
Cr-27 130.00 57 2.81 180.86 276.00 1.39 3.91 外
W-36 5.00 13 0.61 31.46 90.90 6.29 3.85 外
Ag-41 120.00 12 0.54 430.33 1460.00 3.59 1.94 外、中
Ag-27 120.00 12 0.68 289.42 631.00 2.41 1.63 外
Table 7  Comprehensive abnormal eigenvalue statistics of GA 甲 2 16Cu
Fig.12  Ⅰ号钴铜矿化带野外特征
Fig.13  Ⅶ号钴镍矿化带野外特征
Fig.14  Ⅶ号钴镍矿化带采样平面
Fig.15  扫描电镜下钴矿石特征
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