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A comprehensive analysis of lead-zinc geophysical and geochemical anomalies and ore-search prospect in the Jiulong Mountain, Hunan Province |
Bo LI, Han-Jun LIU, Jie ZHOU, Li-Jun QU |
Geophysical and Geochemical Institute of Hunan Province,Changsha 410116, China |
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Abstract In order to get to know the relationship between regional lead-zinc geochemical anomalies and mineralization, metallogenic regularity and ore-forming factors, the authors carried out 1∶10 000 geological survey, soil-rock geochemical measurement and IP survey. Based on comprehensive study, it is found that four geophysical IP anomalies are similar to geochemical soil anomalies in shape and geographical position and both have strong reflection. With the length of 760 m,average thickness of 1.40 m, 3.03% lead and 2.78% zinc, an ore-bearing vein was detected by shallow trenching at the center of the anomaly, which shows good metallogenic conditions, rich minerals and great potential of deep prospecting in Jiulongshan survey area.
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Received: 26 May 2018
Published: 20 February 2019
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Geological sketch and compositive geochemical anomalies of the Jiulong Mountain area
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Geological characteristics and working arrangement of the Jiulong Mountain area
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岩性 | 样品数 /块 | 地层 | 电阻率/(Ω·m) | 幅频率/% | 变化范围 | 算术平均 | 几何平均 | 变化范围 | 算术平均 | 几何平均 | 板岩 | 42 | 五强溪组 | 2043~4581 | 3721 | 3388 | 0.94~3.67 | 1.52 | 1.93 | 砂岩 | 30 | 五强溪组 | 1234~5420 | 2643 | 2498 | 0.58~5.21 | 2.18 | 1.67 | 硅质岩 | 26 | 震旦系 | 2487~4829 | 3121 | 3519 | 1.69~7.37 | 4.78 | 5.43 | 铅锌矿 | 12 | 南华系 | 62~1894 | 788 | 643 | 4.7~36 | 22.04 | 23.46 |
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IP parameters of rocks and ores of the Jiulong Mountain area
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The distribution of IP anomalies of the Jiulong Mountain area
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编号 | 规模大小 | 元素 | 面积/km2 | 平均值/10-6 | 峰值/10-6 | 衬度值 | 异常规模 | 浓度级别 | AP1 | 长:700 m 宽:500 m | Pb | 0.13 | 163.2 | 573 | 4.96 | 0.64 | 3 | | | Zn | 0.08 | 360.5 | 981 | 3.86 | 0.31 | 3 | | | Cu | 0.06 | 43.3 | 50 | 1.73 | 0.10 | 1 | | | Hg | 0.09 | 1.121 | 4.491 | 11.21 | 1.01 | 3 | | | As | 0.03 | 43.6 | 70 | 3.46 | 0.10 | 1 | | | Ag | 0.02 | 0.25 | 0.3 | 1.92 | 0.04 | 1 | AP2 | 长:1 600 m 宽:500 m | Pb | 0.36 | 367.4 | 3000 | 11.17 | 4.02 | 3 | | | Zn | 0.25 | 352.8 | 1384 | 3.78 | 0.94 | 3 | | | Cu | 0.20 | 54.1 | 300 | 2.16 | 0.43 | 3 | | | Hg | 0.35 | 0.803 | 4.541 | 8.03 | 2.81 | 3 | | | As | 0.14 | 63.7 | 169.5 | 5.06 | 0.71 | 3 | | | Ag | 0.11 | 0.73 | 5.0 | 5.62 | 0.62 | 3 | AP3 | 长:850 m 宽:300 m | Pb | 0.05 | 390.4 | 1614 | 11.87 | 0.59 | 3 | | | Zn | 0.04 | 436.2 | 1570 | 4.67 | 0.19 | 3 | | | Cu | 0.11 | 62.3 | 300 | 2.49 | 0.27 | 3 | | | Hg | 0.11 | 0.727 | 2.9 | 7.27 | 0.80 | 3 | | | As | 0.08 | 46.6 | 102.7 | 3.70 | 0.30 | 2 | | | Ag | 0.09 | 0.48 | 3.32 | 3.69 | 0.33 | 3 | AP4 | 长:1 200 m 宽:500 m | Pb | 0.22 | 708.4 | 3000 | 21.53 | 4.74 | 3 | | | Zn | 0.26 | 558.4 | 1729 | 5.98 | 1.55 | 3 | | | Cu | 0.15 | 62.6 | 200 | 2.50 | 0.38 | 3 | | | Hg | 0.16 | 1.46 | 5.6 | 14.60 | 2.34 | 3 | | | As | 0.16 | 58.4 | 118.6 | 4.63 | 0.74 | 2 | | | Ag | 0.14 | 0.52 | 2.21 | 4.00 | 0.56 | 3 | AP5 | 长:1 000 m 宽:400 m | Pb | 0.10 | 182.4 | 520 | 5.54 | 0.55 | 3 | | | Zn | 0.18 | 504.2 | 1515 | 5.40 | 0.97 | 3 | | | Cu | 0.09 | 58.1 | 100 | 2.32 | 0.21 | 2 | | | Hg | 0.21 | 0.914 | 4.0 | 9.14 | 1.92 | 3 | | | As | 0.10 | 50.2 | 82.5 | 3.98 | 0.40 | 2 | | | Ag | 0.10 | 0.51 | 1.18 | 3.92 | 0.39 | 3 | AP6 | 长:1 250 m 宽:400 m | Pb | 0.16 | 153.1 | 474 | 6.03 | 0.48 | 3 | | | Zn | 0.15 | 211.6 | 680 | 2.27 | 0.34 | 3 | | | Cu | 0.15 | 60.3 | 100 | 2.41 | 0.36 | 2 | | | Hg | 0.28 | 0.574 | 2.0 | 5.74 | 1.61 | 3 | | | As | 0.21 | 51.0 | 150 | 4.05 | 0.85 | 3 | | | Ag | 0.15 | 0.36 | 1.2 | 2.77 | 0.42 | 3 |
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Comprehensive anomaly characteristic parameters of soil survey of the Jiulong Mountain area
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Geological characteristics and analysis of multi-element anomalies of the Jiulong Mountain area
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岩石类型 | 含量参数 | Pb | Zn | Cu | As | Ag | Hg | 样品数 | 板岩 | 丰度 | 15.0 | 69.2 | 17.1 | 8.7 | 0.10 | 0.06 | 91 | | 峰值 | 632 | 295 | 67.0 | 28.6 | 0.28 | 1.64 | | 冰碛泥砾岩 | 丰度 | 29.6 | 69.0 | 19.1 | 11.2 | 0.09 | 0.18 | 168 | | 峰值 | 2000 | 2000 | 1320 | 1160 | 0.71 | 4.0 | | 硅质岩 | 丰度 | 14.8 | 46.7 | 29.5 | 15.1 | 0.32 | 0.29 | 26 | | 峰值 | 200 | 692 | 100 | 139 | 2.0 | 2.027 | | 泥质白云岩 | 丰度 | 71.5 | 63.7 | 17.7 | 26.3 | 0.10 | 0.45 | 44 | | 峰值 | 2000 | 1567 | 57 | 550 | 0.23 | 5.28 | | 硅质板状页岩 | 丰度 | 23.5 | 50.7 | 27.0 | 24.8 | 0.12 | 1.15 | 244 | | 峰值 | 1725 | 844 | 233 | 123.3 | 3.31 | 7.33 | | 石英砂岩 | 丰度 | 14.4 | 59.5 | 13.6 | 9.5 | 0.09 | 0.10 | 99 | | 峰值 | 350 | 353 | 65 | 61.1 | 0.46 | 2.5 | | 铁帽 | 丰度 | 329.9 | 533.8 | 37.2 | 77.1 | 0.20 | 2.14 | 49 | | 峰值 | 3000 | 2000 | 1098 | 840 | 2.81 | 5.99 | | 铁锰矿化硅化碎裂 白云质灰岩 | 丰度 | 281.7 | 366.9 | 19.1 | 26.6 | 0.06 | 2.55 | 20 | | 峰值 | 1187 | 3000 | 58 | 810 | 0.67 | 5.62 | | 铅锌矿化碎裂 白云质灰岩 | 丰度 | 221.2 | 1127.7 | 18.1 | 24.6 | 1.12 | 0.49 | 12 | | 峰值 | 3000 | 3000 | 33 | 270 | 30 | 5.76 | | 克拉克值(维氏)[21] | 15.0 | 52.0 | 2.5 | 1.5 | 0.07 | 0.015 | |
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Elemental abundance of various types of rock of the Jiulong Mountain area10-6
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The profile of geology、geophysics and geochemistry of the No.98 exploation line
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