Hydrothermal alteration associated with Mesozoic Linglong-type granite-hosting gold mineralization at the Haiyu gold deposit, Jiaodong gold province
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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。
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关键词:
- 热液蚀变 /
- 质量变化 /
- 成矿流体 /
- 三山岛北部海域金矿床 /
- 胶东
Abstract: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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党的十九大报告指出，“要以‘一带一路’为重点，坚持引进来和走出去并重，遵循共商共建共享原则，加强创新能力开放合作，形成陆海内外联动、东西双向互济的开放格局”。在国家实施“一带一路”建设及拉美战略的契机下，提升中国在拉丁美洲地区地学领域的话语权，提高服务水平和质量，从粗放型服务向精准型服务转变，依靠科技创新解决全球重大资源环境问题和地球系统科学问题的能力，是新形势下对境外地质工作的新需求。因此，“两种资源、两个市场”、实施“走出去”是中国长期的资源战略任务，而拉丁美洲地区是中国实施“走出去”战略最重要的优选地区之一。
拉丁美洲是指从墨西哥起的西半球南部的整个地区，也就是地处北纬32°42′和南纬56°54′之间的大陆，东濒加勒比海和大西洋，与非洲大陆的最短距离约为2494.4km；西临太平洋；南隔德雷克海峡与南极洲相望；北界墨西哥与美国界河布拉沃河（即格兰德河），与美国为邻。拉丁美洲包括北美洲的墨西哥、中美洲和南美洲大陆，共有34个国家和地区，2008年人口约5.77亿，主要是印欧混血和黑白混血人种，其次为黑人、印第安人和白种人。由于本区都隶属拉丁语族，因此这些国家被称为拉丁美洲国家，这个地区被称为拉丁美洲。
早在20世纪20年代，澳大利亚学者安德鲁斯E就已指出统一的环太平洋成矿带的存在。40年代原苏联学者斯米尔诺夫C C将环太平洋成矿带划分为以铜为主的内带和以锡钨为主的外带，尔后西里托（1976）、米切尔（1976）、拉德科维奇（1983）均做出了巨大贡献，包括拉丁美洲在内的环太平洋地区的构造与矿产受到普遍重视，发表了大量的论文和专著。中国学者从西太平洋和东太平洋分析对比的角度出发做了许多研究，如张炳熹、李文达、裴荣富、戚建中、陆志刚、陶奎元等。近年来，随着境外地质矿产工作的开展，年轻一代的学者又做了许多有益的工作。特别是中国地质调查局南京地质调查中心境外地质室，他们的工作成果正陆续推向社会。《拉丁美洲地区重要矿产成矿规律研究》专辑的发表正是其集中体现。
该专辑系国内首次总结拉丁美洲地区的成矿地质条件，划分成矿区带，研究成矿系列，将对该地区进一步规划和开发起到指导作用。其主要特色在于：
（1）全面清晰地讨论了拉丁美洲地区重要成矿带的区域地质背景和成矿地质环境，通过对代表性的成矿带、成矿作用和典型矿床的研究，以点带面地阐明了拉丁美洲地区的优势矿产资源。
（2）利用大量的第一手资料，涉及原创、方法及技术，进行系统性、集成性、综合性分析整理，为拉丁美洲地区优势矿产资源成矿规律研究的真实性、准确性提供了依据，并能够使读者顺藤摸瓜，进一步查找所需资料。
（3）文章涵盖面广泛，论文编写单位以中国地质调查局南京地质调查中心为主，中国地质调查局发展研究中心、中国地质科学院地质研究所、吉林大学地球科学学院、福州大学紫金学院，以及秘鲁地质矿产冶金研究院、中国中资企业等多家单位参与；从学科领域看，从典型矿床解剖、重要成矿带成矿规律到投资环境均有涉及，并进行了国际、国内的对比研究，提升了文章的学术水平。可以服务不同层面，满足不同层次的需求。
总之，加强境外地质矿产研究工作十分重要，不仅要收集境外地质矿产资料，开展实地考察，更要加强综合研究，使境外地质矿产编图、成矿区带划分、成矿规律总结等得到深化，才能集成为有影响的大成果。《拉丁美洲地区重要矿产成矿规律研究》专辑的出版，为进一步开展境外地质成矿规律综合研究提供了有借鉴意义的工作思路、方法和实例。
在此，我热诚祝贺这一系列研究成果的取得，并向具有创新意识和国际化视野的地学人才、为境外地质矿床研究作出贡献的专家学者们表示由衷的祝贺!
致谢: 野外工作得到了山东省第六地质勘查院的支持和帮助，流体包裹体和激光拉曼测试分析得到欧光习和张敏研究员的支持和帮助，审稿专家提出了宝贵的修改意见，在此一并致以谢忱。 -
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SCF—三山岛-仓上断裂；JJF—焦家断裂带；ZPF—招平断裂；QXF—栖霞断裂；TCF—桃村断裂；HQF—海阳-青岛断裂；RCF—荣成断裂
Figure 1. Simplified geological map of the Jiaodong gold province showing the distribution of major fault zones, Precambrian metamorphic rocks, Mesozoic granitoid intrusions, sedimentary rocks and gold deposits
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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. Simplified regional geological map of the SCF (a) and the simplified geological map of the Haiyu gold deposit(b)
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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. The geologic map of No.30 profile in the Haiyu gold deposit containing the samples location
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图版 Ⅰ
a.钾化花岗岩镜下照片(+)；b.矿物剪切变形(+)；c.钾长石交代残余晶(+)；d.碳酸盐脉穿插绢英岩(+)；e.斜长石绢云母化(+)；f.斜长石绢云母化(-)；g.黄铁绢英岩化(+)；h.黄铁绢英岩化(-)。Q—石英；Pl—斜长石；Ms—白云母；Mc—微斜长石；Ser—绢云母；Kfs—钾长石；Py—黄铁矿
图版 Ⅰ.
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图版 Ⅱ
a.不同世代黄铁矿(Py)；b.不同世代黄铁矿，闪锌矿(Sp)交代黄铁矿；c.黄铁矿中的粒间金(Gl)；d.黄铁矿中的包裹金；e.硅化中的金细脉；f.石英(Qtz)中的包裹金；g.方铅矿(Gn)交代闪锌矿；h.固溶体分离结构，黄铁矿、闪锌矿和黄铜矿(Ccp)共生
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. Multi-element spider diagram showing the relative abundance of selected major and metallogenic elements of the different alteration zones in the Haiyu gold deposit
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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. Gain and loss diagram for ore-forming elements in the different alteration processes in the Haiyu gold deposit
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图 6 三山岛北海域金矿床流体包裹体显微照片
a—第Ⅱ阶段石英中H-C型三相富CO2包裹体，部分被改造拉长；b—第Ⅱ阶段石英中H-C型三相富CO2包裹体; c—第Ⅱ阶段石英中H-C型三相富CO2包裹体; d—第Ⅲ阶段石英中H型富H2O包裹体
Figure 6. Characters of fluid inclusions within different stages quartz form the Haiyu gold deposit
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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. Histograms illustrating the distribution of homogenization temperrature and salinity of fluid inclusions within different stages quartz of the Haiyu gold deposit
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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
a—第Ⅱ阶段H-C型包裹体；b—第Ⅱ阶段H型包裹体
Figure 8. Gain and loss diagram for ore-forming elements in the different alteration processes in the the Haiyu gold deposit
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 
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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
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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
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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
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