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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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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.
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Received: 22 January 2024
Published: 21 October 2024
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12](a)and geological sketch map(b)of Mangyahedong area ">
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Geotectonic location[12](a)and geological sketch map(b)of Mangyahedong area
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Distribution of 1:200,000 geochemical anomaly of Mangyahedong area
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Geochemical anomaly distribution of 1:50,000 stream sediment in Mangyahedong area
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Geochemical anomaly distribution of 1:50,000 mineral geochemical survey in Mangyahedong area
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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 |
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Comprehensive abnormal eigenvalue statistics of AS28-3 CuCoNi(AgZnPbSnAu)
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Comprehensiv anomaly anatomy diagram of AS28-3CuCoNi(AgZnPbSnAu)
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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 |
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Geochemical variable statistics of Cu、Co、Cr、Ni elements
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R-type cluster analysis pedigree of stream sediments elements
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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 |
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Characteristic roots and structural formulas of major factors
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Factor measurement chart of Cu、Co、Cr、Ni
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Changes in the content of Cu、Co、Cr、Ni in different geological bodies
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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 |
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Distribution characteristics of Co、Cr、Cu、Ni in different geological bodies in Mayahedong area
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Distribution map of Co element abnormal
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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 |
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Co abnormal characteristics in Mangyahedong area
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GA 甲 2 26Co ">
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Comprehensiv anomaly anatomy diagram of Co
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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 |
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GA 甲 2 16Cu ">
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Comprehensiv anomaly anatomy diagram of Cu
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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 |
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Field characteristics of No.Ⅰcobalt-copper mineralization belt
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Field characteristics of No.Ⅶ cobalt-nickel mineralization belt
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Sampling plan of No.VII cobalt-nickel mineralization belt
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Characteristics of cobalt ore under SEM
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