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胶东三山岛北海域金矿床热液蚀变作用研究

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王建, 朱立新, 马生明, 王兵, 张亮亮, 唐世新, 段壮. 胶东三山岛北海域金矿床热液蚀变作用研究[J]. 地质通报, 2020, 39(11): 1807-1826.
引用本文: 王建, 朱立新, 马生明, 王兵, 张亮亮, 唐世新, 段壮. 胶东三山岛北海域金矿床热液蚀变作用研究[J]. 地质通报, 2020, 39(11): 1807-1826.
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WANG Jian, ZHU Lixin, MA Shengming, WANG Bing, ZHANG Liangliang, TANG Shixin, DUAN Zhuang. Hydrothermal alteration associated with Mesozoic Linglong-type granite-hosting gold mineralization at the Haiyu gold deposit, Jiaodong gold province[J]. Geological Bulletin of China, 2020, 39(11): 1807-1826.
Citation: WANG Jian, ZHU Lixin, MA Shengming, WANG Bing, ZHANG Liangliang, TANG Shixin, DUAN Zhuang. Hydrothermal alteration associated with Mesozoic Linglong-type granite-hosting gold mineralization at the Haiyu gold deposit, Jiaodong gold province[J]. Geological Bulletin of China, 2020, 39(11): 1807-1826.
shu

胶东三山岛北海域金矿床热液蚀变作用研究

  • 1.

    中国地质科学院地球物理地球化学勘查研究所, 河北 廊坊 065000

  • 2.

    北京第二外国语学院附属中学, 北京 100024

  • 3.

    中国地质调查局, 北京 100037

  • 4.

    山东省第六地质矿产勘查院, 山东 威海 264200

  • 基金项目:
    物化探所中央财政科研项目结余资金项目《胶东典型金矿床元素迁移与定量化指标探讨》（编号：JY201910）
详细信息
    作者简介: 王建(1985-), 男, 博士, 地球化学专业。E-mail:beijingwangjian@163.com
    通讯作者: 马生明(1963-), 男, 博士, 教授级高工, 从事矿产勘查地球化学理论方法研究。E-mail:mashengming@igge.cn

  • 中图分类号: P618.51

Hydrothermal alteration associated with Mesozoic Linglong-type granite-hosting gold mineralization at the Haiyu gold deposit, Jiaodong gold province

  • 1.

    Institute of Geophysical and Geochemical Exploration, Chinese Academy of Geological Sciences, Langfang 065000, Hebei, China

  • 2.

    The High School Aftilcated to Beijing International Studies University, Beijing 100024, China

  • 3.

    China Geological Survey, Beijing 100037, China

  • 4.

    Sixth Institute of Geology and Mineral Resources Survey of Shandong Province, Weihai 264200, Shandong, China

More Information

    摘要

  • 三山岛北海域金矿床位于胶东金矿省的西北缘，是2015年新发现的超大型金矿床（储量470 t、Au品位4.30 g/t），金矿体赋存于中生代玲珑式花岗岩中，主矿体受三山岛-仓上断裂带控制。中生代含矿的玲珑式花岗岩显示了复杂的蚀变、矿化共生组合关系。三山岛-仓上断裂的活动使热液流体发生渗透，导致断裂带两侧发生广泛的钾化蚀变。随后，大规模的绢云母化沿主断裂两侧形成。随着断层泥的形成，其作为"阻挡层"使含矿流体不能运移到断裂带上盘，成矿流体在下盘发生强烈的绢云母-石英-黄铁矿蚀变并伴有金的析出。最后石英-碳酸盐脉的形成标志着与金成矿相关热液活动减弱。钾化和绢英岩化岩石的平衡计算揭示了SiO2、MgO和CaO带入，TiO2、K2O基本不变，而Na2O表现为带出；大多数主量元素受强烈的矿物反应影响。Au、Ag、Bi、As、Pb、Zn等相关成矿元素呈带入特征，它们之间多呈正相关关系且与黄铁绢英岩化有密切关系，显示出在水岩反应过程中不同类型的元素具有复杂的地球化学行为。蚀变组合和流体包裹体研究表明，成矿流体以中低温（126~351℃）、中低盐度（1.02%~10.48% NaCleqv）为特征，属于CO2-H2O-NaCl±CH4体系。在热液流体中，金可能主要以Au（HS）2-络合物的形式运移；黄铁绢英岩化过程中，硫化作用使Au（HS）2-络合物失稳分解导致Au沉淀富集成矿。华北克拉通的重新活化导致软流圈上涌和大量火成岩的形成，也为胶东发生大规模金成矿作用提供了充足的的热能和流体输入。

    The Haiyu gold deposit, located in the north part of the Jiaodong gold province, was discovered in 2015 as a superlarge gold deposit with gold reserves 470 t @ 4.30 g/t. The gold orebodies were hosted in the Mesozoic Linglong-type granites and controlled by the Sanshandao-Cangshang Fault (SCF). Host Longlong-type granitic rocks for Au mineralization show a complex paragenetic sequence with hydrothermal alteration. Remobilization of the SCF system allowed for infiltration of hydrothermal fluids, leading to extensive K-feldspar alteration along the main fault. Subsequently, massive sericite formation occurred along both sides of the main fault. With the formation of fault gouge, the ore-bearing fluid could not migrate to the upper wall of the fault zone; therefore, the ore-forming fluid underwent intense sericite-quartz-pyrite alteration in footwall accompanied by gold precipitation. Finally, the formation of quartz-carbonate veins indicated the decrease of hydrothermal activity related to gold mineralization. The equilibrium calculation of potash and sericite rocks revealed that SiO2, MgO and CaO were brought in, TiO2 and K2O were basically unchanged, while Na2O appeared to be taken out. Most major elements were affected by strong mineral reactions. Au, Ag, Bi, As, Pb, Zn and other related ore-forming elements showed a positive correlation and were closely related to sericite-quartz-pyrite alteration. The mass balance calculation shows that different types of elements had complex geochemical behaviors in the process of water-rock reaction. The alteration combination and fluid inclusion study shows that the ore-forming fluid was characterized by medium and low temperature (126~351℃) and medium and low salinity (1.02~10.48%NaCleqv), belonging to the CO2-H2O-NaCl±CH4 system. In hydrothermal fluids, gold might have migrated mainly as Au(HS)2- complex. During the process of sericite-quartz-pyrite alteration, Au(HS)2- complex was destabilized and decomposed by sulfofication, leading to Au precipitation and mineralization. The reactivation of the North China Craton led to the upwelling of asthenosphere and the formation of a large number of igneous rocks, and also provided sufficient thermal energy and fluid input for large-scale gold mineralization in Jiaodong gold province.

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  • 图 1  胶东金矿省区域地质及金矿床分布图[4, 11]

    Figure 1. 

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    图 2  三山岛-仓上断裂带区域地质简图(a)和三山岛北海域金矿床地质简图(b)[18]

    Figure 2. 

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    图 3  三山岛北海域金矿床30线剖面地质图[6]

    Figure 3. 

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    图 图版 Ⅰ   

    Figure 图版 Ⅰ. 

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    图 图版 Ⅱ   

    Figure 图版 Ⅱ. 

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    图 4  三山岛北海域金矿床不同矿化蚀变岩元素丰度比值图

    Figure 4. 

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    图 5  三山岛北海域金矿床不同蚀变过程中成矿元素得失图

    Figure 5. 

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    图 6  三山岛北海域金矿床流体包裹体显微照片

    Figure 6. 

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    图 7  三山岛北海域金矿床不同阶段石英流体包裹体均一温度和盐度图解

    Figure 7. 

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    图 8  三山岛北海域金矿床主成矿阶段石英流体包裹体激光拉曼分析结果

    Figure 8. 

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    表 1  三山岛北海域金矿床不同蚀变岩主量元素、微量和稀土元素分析结果

    Table 1.  The analyses of major, trace and REE Qnalyses of different altered rocks of the Haiyu gold deposit

    样品号 深度/m SiO2 Al2O3 TFe2O3 MgO CaO Na2O K2O S Au Ag As Ba Bi Cd Cr Cu Ga Ge Mo Pb Sb Sr Ti W Zn Zr
    二长花岗岩
    ZK3004-1 448 65.94 13.78 0.06 0.74 0.11 1.34 3.41 4.51 438 2.79 137 4.32 827 0.09 113 6.67 4.33 20.3 1.22 0.55 35.2 0.19 220 0.74 45.2 44.9
    ZK3008-1 583 64.87 14.73 0.12 1.35 0.16 1.42 4.46 3.97 87.4 3.04 79.0 0.79 1729 0.04 74.4 6.56 4.61 20.6 1.10 0.60 29.6 0.23 571 0.48 68.9 68.8
    ZK4612-1 785 65.73 14.40 0.11 0.82 0.11 1.31 4.08 4.21 93.5 3.72 118 0.93 1275 0.04 32.4 6.94 1.37 20.2 1.18 0.34 37.3 0.12 386 0.21 38.1 49.4
    ZK5405-2 1428 66.54 14.10 0.13 0.77 0.24 1.61 4.67 3.57 87.5 3.48 54.0 0.72 1245 0.09 31.9 11.6 3.64 18.9 0.93 2.04 22.3 0.15 644 0.29 19.0 64.9
    ZK6205-1 515 66.52 14.82 0.11 1.14 0.14 1.47 4.08 3.61 77.6 0.79 50.2 0.64 1450 0.05 50.1 7.83 2.97 18.7 0.90 0.46 27.4 0.17 417 0.30 52.6 62.7
    ZK6205-4 1299 64.94 14.01 0.16 1.41 0.25 1.64 3.98 3.76 116 0.49 23.8 0.50 861 0.05 27.8 6.58 2.12 21.8 1.08 0.47 22.7 0.32 449 0.43 27.0 81.7
    平均值 65.76 14.30 0.12 1.04 0.17 1.46 4.11 3.94 150 2.38 77.1 1.32 1231 0.06 54.93 7.69 3.17 20.1 1.07 0.74 29.1 0.20 448 0.41 41.8 62.1
    钾化花岗岩
    ZK3001-7 300 64.70 15.75 0.11 0.78 0.20 1.96 4.13 4.00 50.4 3.03 68.5 1.50 1530 0.06 174 8.05 2.81 19.6 0.80 0.31 33.1 0.32 425 0.43 66.4 76.5
    ZK3011-6 529 64.97 13.58 0.21 0.77 0.31 1.58 5.13 2.53 66.1 3.42 52.3 1.05 1087 0.03 14.4 7.32 3.08 20.6 0.61 0.23 18.4 0.24 748 0.26 34.1 89.5
    ZK3003-8 1203 64.57 14.26 0.13 0.65 0.19 1.77 4.68 3.19 17.1 0.46 25.4 0.72 1817 0.03 18.2 11.2 3.00 17.8 0.66 1.44 19.6 0.15 683 0.42 14.9 54.5
    平均值 64.75 14.53 0.15 0.73 0.23 1.77 4.64 3.24 44.5 2.30 48.8 1.09 1478 0.04 68.86 8.87 2.96 19.33 0.69 0.66 23.7 0.24 619 0.37 38.5 73.5
    绢英岩化花岗岩
    ZK3001-1 86.8 64.52 15.12 0.09 0.92 0.20 1.12 2.96 5.21 728 12.9 983 24.1 1288 0.27 909 7.04 20.2 22.3 1.20 0.42 294 0.79 200 0.88 142 60.5
    ZK3001-5 237 60.28 14.40 0.11 0.83 0.25 1.80 0.15 4.62 128 4.76 198 3.81 926 0.07 687 8.15 4.34 18.5 1.13 0.29 92.8 0.75 202 0.63 259 80.5
    ZK3001-6 276 60.36 14.10 0.12 1.15 0.37 6.14 1.05 3.95 51.3 0.46 50.2 0.95 674 0.05 189 6.36 1.97 20.0 1.04 0.24 15.2 0.38 403 1.23 67.2 64.2
    ZK3011-2 307 65.43 14.55 0.05 0.79 0.18 0.73 2.00 4.58 493 9.55 375 13.1 410 0.05 939 7.20 13.5 25.2 1.41 0.43 153 0.71 150 0.55 212 39.1
    ZK3011-3 339 62.48 13.81 0.11 1.30 0.27 1.96 0.59 4.37 564 15.5 1069 273 788 0.13 7791 10.2 21.5 18.6 1.29 0.48 701 1.30 191 1.34 1739 84.8
    ZK3011-4 369 61.34 14.29 0.11 1.89 0.32 1.85 1.10 4.43 1871 21.3 1273 45.4 1136 0.20 3806 6.92 62.6 18.7 1.20 0.39 1055 0.86 257 1.94 916 91.7
    ZK3003-2 576 66.85 12.73 0.11 0.68 0.20 1.51 3.57 3.61 117 0.92 86.4 3.11 1285 0.06 62.4 6.93 4.42 21.5 0.83 0.92 39.3 0.58 311 0.83 44.3 62.5
    ZK3003-3 764 68.99 12.63 0.10 0.80 0.17 1.14 3.28 3.89 359 9.87 735 5.01 1301 0.52 83.1 9.13 4.67 18.3 1.14 1.27 56.6 0.28 286 0.55 24.1 67.9
    绢英岩化花岗岩
    ZK3003-5 945 60.70 14.40 0.09 5.00 0.50 1.00 0.07 3.98 4321 25.4 962 54.9 324 0.36 168 12.4 84.2 24.9 1.49 1.69 149 1.28 61.6 2.84 49.0 70.8
    ZK3003-6 997 61.14 14.34 0.11 1.27 0.48 3.26 0.07 4.36 192 5.12 135 1.83 340 0.12 51.4 9.14 3.91 22.9 1.38 0.33 6.76 0.27 176 1.98 14.6 75.2
    ZK3003-7 1094 64.32 13.45 0.15 0.59 0.21 1.68 4.75 3.30 44.9 1.52 23.6 0.87 2085 0.02 18.9 5.34 1.99 19.7 0.72 0.22 12.2 0.15 759 0.44 11.8 70.2
    ZK3004-2 499 67.43 14.13 0.02 0.43 0.01 0.85 3.97 4.63 151 1.61 91.7 5.89 81.5 0.04 357 7.18 2.58 30.4 1.81 1.63 55.5 0.18 72.6 0.28 100 25.5
    ZK3004-3 695 66.76 13.62 0.11 0.90 0.10 1.37 3.90 4.33 233 3.21 117 6.56 1283 0.03 409 4.52 4.56 19.4 1.00 0.35 41.2 0.20 376 0.38 98.6 63.8
    ZK3004-5 1039 65.80 14.40 0.11 0.88 0.37 1.19 3.16 4.28 166 3.41 86.9 1.43 1721 0.04 187 5.49 2.96 17.7 1.02 0.42 28.2 0.26 442 1.43 62.6 67.5
    ZK3004-8 1277 59.98 15.34 0.12 0.47 0.19 2.84 2.42 4.80 82.0 2.20 102 1.29 1673 0.21 35.3 4.44 1.29 19.1 1.11 1.52 37.9 0.17 358 2.88 17.3 72.8
    ZK3004-9 1327 64.54 13.77 0.11 0.26 0.14 1.93 3.88 4.36 177 1.26 30.1 0.97 2790 0.06 18.7 6.74 3.13 18.0 0.95 1.52 19.1 0.11 774 3.90 10.4 52.7
    ZK3006-2 614 69.52 13.51 0.03 0.34 0.00 0.54 4.43 4.01 58.0 0.40 55.2 1.75 47.2 0.06 59.3 11.2 3.73 31.0 1.93 1.72 36.3 0.13 64.0 0.50 33.9 18.6
    ZK3006-3 1086 65.20 13.64 0.12 1.03 0.15 1.74 3.22 3.96 153 1.15 1047 2.26 1475 0.17 1022 10.5 29.7 17.7 0.97 1.52 282 1.81 443 0.62 291 72.3
    ZK3006-7 1430 64.95 13.15 0.12 0.40 0.20 1.61 4.31 4.06 152 219 109 1.64 1550 0.32 59.5 11.8 7.91 15.8 0.91 2.47 17.7 13.8 386 3.08 15.6 63.8
    ZK3006-8 1481 64.64 13.09 0.17 0.48 0.32 2.06 4.57 3.52 67.8 3.24 61.4 0.71 1423 0.32 29.0 5.43 2.50 19.3 0.93 0.52 9.43 0.22 447 2.98 11.9 92.4
    ZK3008-2 714 67.86 14.21 0.05 0.55 0.03 0.75 4.53 4.26 59.8 0.61 54.1 1.83 305 0.04 41.3 10.3 2.63 24.0 1.49 0.50 37.8 0.18 161 0.39 29.3 36.9
    ZK3008-6 1599 63.07 14.23 0.14 0.89 0.24 2.26 3.00 4.38 159 11.9 52.7 1.58 2107 0.09 85.8 12.0 5.30 19.6 0.96 0.41 18.9 0.20 465 2.61 33.2 88.5
    ZK3008-7 1605 63.29 15.25 0.17 0.94 0.26 2.18 3.82 4.30 190 8.93 170 2.52 2502 0.27 395 14.6 9.26 20.9 0.80 1.58 47.4 0.15 684 1.37 143 93.7
    ZK4612-2 1168 59.83 12.99 0.31 2.89 1.97 4.37 2.82 3.79 731 2.96 199 3.55 1513 0.15 126 91.6 9.73 19.8 1.07 2.91 41.7 1.44 912 3.45 67.4 66.9
    ZK4612-3 1203 60.13 14.81 0.20 1.91 0.53 2.58 2.03 4.66 188 1.47 529 1.55 1162 0.07 1450 17.0 6.93 18.1 1.00 1.13 215 2.16 525 1.06 404 83.0
    ZK4612-4 1226 65.72 14.44 0.12 0.80 0.13 1.61 4.32 3.98 98.5 1.06 52.4 2.38 1615 0.06 125 11.0 4.11 17.3 0.95 1.53 30.9 0.20 461 0.63 39.0 68.8
    ZK5405-1 816 64.12 14.50 0.10 0.81 0.24 1.33 4.03 4.07 155 0.99 40.7 1.22 1618 0.04 53.8 7.90 3.17 19.7 1.14 0.60 21.8 0.25 361 0.35 24.5 59.9
    ZK6205-2 976 65.50 12.45 0.09 0.77 0.13 1.42 3.51 4.58 107 0.42 35.5 0.72 1038 0.03 53.5 7.70 3.01 18.8 1.11 0.51 24.0 0.14 311 1.87 29.4 59.1
    ZK6205-3 1084 65.37 13.86 0.13 0.99 0.20 2.88 3.20 3.62 76.9 2.15 57.2 0.79 995 0.04 67.2 7.43 2.94 17.8 0.91 0.55 12.6 0.28 324 1.48 17.6 81.4
    ZK7603-1 1603 64.53 12.97 0.17 2.04 1.08 2.04 4.04 3.82 147 1.30 34.6 0.78 1049 0.04 19.4 43.1 2.61 19.2 1.11 1.67 19.5 0.12 365 0.65 18.6 68.0
    ZK7603-2 1917 65.32 12.09 0.12 0.24 0.08 2.19 4.65 3.62 101 0.60 51.7 1.46 1729 0.03 33.0 6.72 2.55 17.3 1.02 0.29 19.4 0.18 628 1.24 11.9 60.5
    平均值 64.19 13.88 0.12 1.07 0.31 1.93 3.01 4.17 391 12.1 286 15.1 1233 0.13 624 12.4 10.8 20.4 1.13 0.97 116 0.95 373 1.43 159 66.6
    黄铁绢英岩
    ZK3001-3 134 63.63 13.92 0.06 0.77 0.21 0.14 1.45 5.08 684 95.0 4727 9.40 693 2.84 5532 9.92 206 25.6 1.54 1.42 392 0.82 79.4 1.22 792 52.5
    ZK3001-4 180 64.15 13.76 0.11 1.17 0.30 0.83 0.09 4.24 674 16.1 1083 9.27 556 0.11 4262 15.8 14.6 21.8 1.17 0.66 895 1.12 84.8 1.03 1323 68.3
    ZK3011-1 276 63.75 12.22 0.04 3.92 0.40 0.42 0.13 3.83 3601 282 2657 13.2 153 0.09 7389 5.76 33.4 22.4 1.74 0.49 591 8.42 61.2 0.95 1650 39.7
    ZK3011-5 471 60.98 12.75 0.17 6.08 0.77 0.59 0.09 3.69 10765 338 2602 142 206 1.11 160 40.4 74.2 18.1 1.39 0.93 434 0.95 66.4 3.05 45.6 91.3
    ZK3003-4 912 62.32 14.69 0.10 3.10 0.29 1.00 2.28 4.03 763 16.2 1078 7.21 1031 0.50 86.7 11.9 6.76 22.5 1.27 1.58 217 0.34 205 1.95 20.6 77.7
    ZK3004-6 1153 65.15 13.72 0.12 0.45 0.19 1.76 3.43 4.53 143 1.09 134 1.29 1455 0.05 709 4.12 4.27 18.0 1.06 0.52 77.3 0.12 364 1.90 212 70.1
    ZK3008-3 1458 59.66 13.69 0.13 7.96 0.49 0.12 0.06 4.20 8922 108 3363 234 264 2.81 541 15.8 317 21.8 1.32 1.73 988 2.53 22.1 3.54 156 94.4
    平均值 62.81 13.54 0.10 3.35 0.38 0.70 1.07 4.23 3650 122 2235 59.5 623 1.07 2669 14.8 93.7 21.5 1.36 1.05 513 2.04 126 1.95 600 70.6
    金矿体
    ZK3004-4 871 66.88 12.97 0.11 1.56 0.31 0.97 1.61 4.07 1994 803 1178 124 903 0.14 5282 10.4 12.4 17.1 1.20 1.42 225 0.50 207 1.31 951 84.2
    ZK3004-7 1250 61.35 14.13 0.10 1.37 0.35 1.56 0.10 4.43 1396 1311 1848 7.88 207 3.28 53.0 5.12 3.48 20.6 1.46 0.28 446 0.42 84.4 3.92 19.6 73.1
    ZK3006-4 1252 60.05 13.31 0.13 3.79 0.39 1.66 0.47 4.18 1238 42.7 3008 32.2 721 0.79 804 12.6 31.5 19.1 1.33 1.51 832 4.30 98.8 1.79 175 79.4
    ZK3006-5 1349 57.24 13.64 0.12 1.57 0.43 2.09 0.08 4.86 1978 4321 3158 23.2 440 8.39 21.9 4.71 79.2 17.8 1.40 0.24 396 0.28 75.3 5.59 7.34 77.2
    ZK3008-4 1569 63.41 12.77 0.13 3.13 0.78 0.20 0.11 4.34 6310 6194 3680 26.8 281 34.6 28.7 8.77 2.91 26.1 1.61 0.31 36.1 0.32 47.3 5.63 7.23 92.0
    ZK3008-5 1574 61.57 13.54 0.12 4.88 0.77 0.11 0.16 4.44 11484 7367 5111 36.1 181 17.4 16.2 7.37 3.90 26.8 1.56 0.65 124 0.23 21.4 5.08 6.72 87.0
    平均值 61.75 13.40 0.12 2.72 0.50 1.10 0.42 4.39 4067 3340 2997 41.7 456 10.8 1034 8.16 22.2 21.3 1.43 0.74 343 1.01 89.0 3.89 194 82.2
    中国东部花岗岩 72.07 14.05 0.23 1.94 0.60 1.30 3.82 4.27 70.0 0.38 0.05 0.70 785 0.10 0.05 6.30 4.90 17.8 1.10 0.50 21.0 0.12 245 0.49 36.0 155
    注：主量元素含量单位为%，微量和稀土元素含量单位为10-6，Au、Cd含量单位为10-9
    下载: 导出CSV

    表 2  三山岛北海域金矿床矿物生成顺序

    Table 2.  Generalized generation sequence diagram of the Haiyu Au deposit

    下载: 导出CSV

    表 3  三山岛北海域金矿床不同阶段含矿石英脉流体包裹体特征及显微测温结果

    Table 3.  Charcaterristics and microthermometric results of fluid inclusions in quartz crystals from the Haiyu gold deposit

    阶段 样品号 主矿物 测试数
    量/个    		 包裹体特征 均一
    相态    		 ThCO2 /℃ Th-tot /℃ 盐度/
    %NaCleqv    		 压力/MPa
    类型 大小/μm 气体体积
    分数/%    		 范围个数
    (n)    		 平均 范围个数
    (n)    		 平均
    Ⅱ bgt29 石英 24 H-C型 3~15 10~30 液相 29.6~31.2 30.2 168~275 198 2.96~7.38 248~308
    bgt30 石英 17 H-C型 2~7 10~15 液相 26.3~28.0 27.2 126~256 194 4.07~7.54 286~313
    bgt31 石英 18 H-C型 2~9 10~30 液相 23.7~31.1 28.5 128~251 175 4.96~8.03 297~355
    bgt32 石英 32 H-C型 3~20 10~30 液相 30.2~31.2 30.7 151~350 233 3.33~8.51 262~330
    bgt35 石英 16 H型 2~7 10~15 液相 135~235 190 2.77~7.87
    bgt36 石英 17 H-C型 3~7 10~35 液相 26.8~31.2 30.1 171~343 227 2.90~10.48 240~273
    bgt37 石英 21 H-C型 2~13 5~30 液相 13.9~31.2 30.7 171~343 196 2.96~8.03 205~294
    Ⅲ bgt26 石英 30 H-C型 3~17 10~35 液相 30.2~31.2 30.7 171~343 213 2.2~5.86 297~355
    bgt27 石英 4 H型 2~10 10 液相 142~147 145 0.88~1.06
    bgt28 石英 8 H型 2~7 5~15 液相 146~210 179 1.02~2.24
    Ⅳ bgt33 石英 31 H型 3~10 10~15 液相 143~182 161 2.0~6.59
    bgt34 石英 8 H型 2~6 10 液相 118~198 153 1.02~3.06
    下载: 导出CSV

    表 4  三山岛北海域金矿床不同蚀变带中元素平均得失量

    Table 4.  Average gain and loss of elements in the different alteration zones of Haiyu gold deposit

    岩性 SiO2 TiO2 TFe2O3 MgO CaO Na2O K2O S Au Ag As Ba
    二长花岗岩 -7.48 -0.11 -0.92 -0.43 0.14 0.23 -0.40 77.3 1.96 75.7 0.59 424
    钾化带 -9.46 -0.08 -1.23 -0.37 0.41 0.68 -1.13 -26.9 1.85 47.1 0.36 644
    绢英岩化带 -7.09 -0.11 -0.85 -0.29 0.66 -0.76 -0.05 326 11.9 290 14.5 463
    黄铁绢英岩化带 -6.88 -0.12 1.54 -0.21 -0.58 -2.69 0.12 3719 127 2320 61.0 -139
    金矿体 -7.30 -0.11 0.91 -0.07 -0.15 -3.37 0.33 4196 3503 3144 43.1 -307
    岩性 Bi Cd Cr Cu Ga Ge Pb Sb Sr W Zn Zr
    二长花岗岩 -0.04 53.9 1.25 -1.78 1.93 -0.05 7.57 0.08 195 -0.09 5.05 -94.0
    钾化带 -0.06 66.5 2.28 -2.04 0.9 -0.43 1.94 0.11 353 -0.13 1.19 -83.9
    绢英岩化带 0.03 631 6.28 6.00 2.82 0.04 96.3 0.84 132 0.96 125 -87.6
    黄铁绢英岩化带 1.01 2770 9.06 92.3 4.48 0.31 512 2.00 -114 1.53 587 -81.7
    金矿体 11.2 1085 2.26 18.4 4.50 0.40 339 0.94 -152 3.59 168 -68.8
    注：主量元素含量单位为%，微量元素含量单位为10-6, Au、Ag含量单位为10-9
    下载: 导出CSV
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收稿日期:  2020-03-10
修回日期:  2020-06-12
刊出日期:  2020-11-25

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