Element migration regularity during hydrothermal alteration in the Xiejiagou gold deposit, Eastern Shandong Province
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摘要:
谢家沟金矿床位于胶西北焦家断裂带和招平断裂带之间。通过详细的野外地质观测与室内研究,查明了谢家沟金矿床的蚀变类型及空间分带,系统采集不同蚀变类型的岩石样品,进行岩石元素地球化学分析,运用Isocon方法分析探讨了热液蚀变过程中的元素迁移规律及其对成矿流体性质、矿质沉淀的制约。蚀变从中心到两侧分别为含陡立石英脉的黄铁绢英岩化、黄铁绢英岩化、钾长石化;从早到晚依次为钾长石化、黄铁绢英岩化、含陡立石英脉的黄铁绢英岩化。钾长石化蚀变表现为钾长石和黑云母分别交代玲珑黑云母花岗岩中的斜长石和角闪石,K明显的迁入,Si轻微迁入,Ca、Mg为迁出,Fe轻微迁出。黄铁绢英岩化蚀变叠加于钾长石化蚀变之上,主要表现为斜长石、钾长石、黑云母等矿物在含H+、HS-溶液中失稳,被绢云母、石英替代,Fe、Mg、Ca为迁入,K、Na、Si表现为元素迁出。从钾长石化阶段到黄铁绢英岩化阶段,流体从碱性转变为酸性;Au迁移形式也逐渐由氯的络合物转化为硫氢络合物。随着成矿流体的不断演化,成矿流体与围岩不断反应,含矿热液化学性质不断变化促进了金的沉淀。
Abstract:The Xiejiagou gold deposit is located between the Jiaojia fault zone and the Zhaoyuan-Pingdu fault zone in northwest Jiaodong.Based on detailed field geological observations and laboratory study, the authors identified the alteration types and spatial zoning of the Xiejiagou gold deposit.In this paper, the authors systematically collected rock samples of different alteration types, and carried out geochemical analysis of rock elements.The Isocon method was used to analyze the element migration law during hydrothermal alternation and its constraint on the properties of ore-forming fluids and mineral precipitation.The alterations of the gold deposit are beresitization of steep quartz veins as well as beresitization and K-feldspathization from the center to both sides; they are K-feldspathization, beresitization, and ferritic lithology with steeply dipping quartz veins from early to late period.The K-feldspathization shows that K-feldspars and biotite replaced the plagioclases and hornblende in the Linglong biotite granite, respectively, the potassium obviously migrated in, silicon slightly migrated in, calcium and magnesium migrated out, and iron migrated slightly out.The beresitization is superimposed on the K-feldspathization, which mainly demonstrates that plagioclase, K-feldspar and biotite were destabilized in the solution containing H+ and HS-, and were replaced by sericite and quartz.Iron, magnesium, and calcium moved in, potassium, sodium, and silicon moved out.From the K-feldspar stage to the beresitization stage, the fluid changed from alkaline to acidic, and the migration form of Au also gradually changed from a chloride complex to a sulfur-hydrogen complex.With the continuous evolution of the ore-forming fluid, the ore-forming fluid and the surrounding rock continuously reacted, and the chemical properties of the ore-bearing hydrothermal fluid continued to change to promote the precipitation of gold.
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Keywords:
- Xiejiagou /
- gold deposit /
- wall-rock alteration /
- Isocon method /
- element migration regularity
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致谢: 野外工作期间得到招金集团金亭岭矿业公司的大力帮助,成文期间得到中国地质调查局发展研究中心矿产勘查处同事和成都理工大学程文斌老师的帮助,审稿专家提出了宝贵的修改建议;在此致以诚挚的感谢。
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图 1 胶东区域地质简图[36]
1—古近纪沉积物;2—白垩纪沉积物;3—新元古代蓬莱群大理岩、板岩和石英岩;4—古元古代粉子山和荆群片岩、片麻岩、大理岩和少量麻粒岩、角闪岩;5—新太古代胶东群角闪岩和麻粒岩;6—超高压变质岩;7—早白垩世晚期花岗岩;8—早白垩世中期花岗岩;9—晚侏罗世花岗岩;10—晚三叠世花岗岩;11—岩石圈断裂;12—区域断裂;13—地质界线;14—蚀变岩型金矿;15—石英脉型金矿;16—蚀变砾岩型金矿
Figure 1. Regional geological map of Jiaodong
表 1 谢家沟金矿各类蚀变岩主量、微量和稀土元素组成及特征值
Table 1 Analytical results of whole-rock major, trace elements and REE of alterative rocks in the Xiejiagou gold deposit
元素 玲珑黑云母花岗岩 钾长石化带样品 黄铁绢英岩化样品 含陡立石英脉黄铁绢英岩化样品 XJG
41XJG
53-1XJG
53-2XJG
28XJG
32-2XJG
46XJG
49XJG
14XJG
21XJG
27-2XJG
42XJG
51XJG
34-1XJG
40XJG
22XJG
50XJG
25XJG
35-2XJG
44SiO2 69.50 71.36 71.26 69.88 74.23 72.52 72.13 66.72 67.39 68.52 67.51 71.91 65.22 68.39 71.70 69.37 67.86 75.45 67.83 Al2O3 14.42 14.79 14.45 15.17 14.22 14.39 13.41 13.27 16.18 15.46 15.79 13.21 12.23 13.93 13.09 13.72 15.21 11.89 16.33 Fe2O3 2.27 2.34 2.05 2.59 0.84 1.92 1.68 3.34 2.95 2.96 2.58 2.65 12.93 2.85 3.64 4.27 3.70 3.93 2.95 MgO 0.45 0.42 0.45 0.27 0.13 0.14 0.19 0.38 0.39 0.36 0.44 0.26 0.59 0.68 0.26 0.40 0.43 0.27 0.64 CaO 2.21 2.42 2.52 1.20 1.20 1.31 2.11 3.53 2.31 2.27 2.73 2.18 1.20 3.31 1.82 1.74 1.78 0.53 1.69 Na2O 3.74 3.98 4.16 4.16 3.85 4.37 3.52 3.16 3.90 4.34 3.07 3.04 0.83 3.63 3.03 3.10 3.68 4.14 2.83 K2O 3.71 3.43 3.69 4.06 3.34 4.32 3.94 4.03 3.73 3.32 4.06 3.76 4.57 2.81 3.94 3.58 3.87 2.62 3.90 MnO 0.05 0.07 0.07 0.04 0.02 0.03 0.03 0.07 0.06 0.05 0.07 0.05 0.05 0.10 0.05 0.04 0.06 0.02 0.06 TiO2 0.23 0.18 0.21 0.15 0.04 0.02 0.03 0.10 0.21 0.19 0.19 0.16 0.13 0.21 0.15 0.18 0.21 0.10 0.24 P2O5 0.07 0.08 0.10 0.07 0.01 0.02 0.01 0.08 0.06 0.05 0.06 0.05 0.04 0.06 0.06 0.05 0.08 0.02 0.08 烧失量 3.35 0.91 0.91 2.31 2.07 0.89 2.84 3.71 2.74 2.42 3.43 2.69 2.17 3.93 2.21 3.40 3.05 0.99 3.39 FeO 1.96 1.82 1.59 1.49 0.61 1.66 1.16 2.51 2.38 2.56 1.65 2.07 4.58 1.98 2.53 1.49 2.38 2.44 1.85 Li 6.19 7.48 7.01 3.84 5.43 1.52 1.52 19.30 4.69 4.45 5.28 2.75 4.41 6.14 2.27 3.47 15.70 6.03 7.21 Be 1.15 1.61 1.45 1.48 1.12 1.55 1.20 1.47 1.82 1.58 1.31 1.18 2.32 1.42 1.38 1.54 2.46 1.47 1.62 Sc 2.59 3.55 3.00 7.64 1.30 2.05 1.80 4.21 4.53 2.68 3.25 2.29 2.72 4.46 2.96 3.11 13.90 2.38 4.30 V 18.80 25.10 24.40 21.40 6.12 8.94 7.77 28.40 26.80 14.00 25.50 9.91 32.00 24.00 19.00 20.20 63.40 22.20 23.10 Cr 56.10 48.80 5.81 5.80 2.46 107.00 1.77 158.00 111.00 153.00 69.00 101.00 98.20 9.05 131.00 3.36 89.40 161.00 7.96 Co 2.87 2.90 2.26 2.41 0.53 2.02 15.90 4.97 5.48 3.27 1.92 6.64 8.20 2.13 7.00 88.30 4.16 3.98 1.28 Ni 7.68 7.74 4.18 2.31 1.21 10.00 4.24 18.90 14.10 17.20 9.36 11.40 17.50 6.17 16.30 11.40 14.60 13.00 2.62 Cu 6.59 5.06 4.19 4.15 1.55 4.56 3.56 39.90 7.85 26.10 5.39 7.47 17.60 15.10 7.36 5.08 21.10 7.39 4.44 Zn 42.40 45.30 45.60 19.50 9.67 10.30 11.40 54.40 22.00 25.50 16.40 20.20 37.50 108.00 16.90 26.60 73.30 15.60 43.20 Ga 18.20 18.10 17.70 21.70 16.20 15.70 18.10 17.30 20.40 20.10 21.00 18.40 25.60 17.40 16.60 20.30 18.80 15.60 26.00 Rb 104 86 86 137 82 104 117 133 125 114 162 120 166 87 119 121 85 84 173 Sr 1113 663 666 323 269 601 413 605 693 625 237 513 115 491 389 386 341 290 109 Y 11.70 15.40 17.00 11.50 4.08 5.85 6.41 12.70 10.40 11.90 9.58 10.80 5.81 12.00 9.10 8.39 10.40 1.79 8.27 Mo 5.23 4.85 0.25 0.48 0.24 11.60 0.29 16.30 12.50 18.20 6.22 10.80 10.90 1.13 13.90 16.80 8.97 14.20 0.34 Cd 0.03 0.04 0.04 0.02 0.01 0.04 0.03 0.21 0.06 0.05 0.03 0.05 0.06 0.32 0.05 0.07 0.05 0.04 0.02 In 0.02 0.02 0.02 0.06 0.01 0.02 0.03 0.04 0.03 0.03 0.08 0.03 0.11 0.03 0.03 0.03 0.05 0.03 0.09 Sb 0.11 0.09 0.08 0.11 0.11 0.19 0.10 0.39 0.36 0.29 0.15 0.20 0.23 0.16 0.30 0.13 0.24 0.25 0.10 Cs 1.12 0.55 0.49 1.06 0.64 0.73 0.82 1.56 1.21 1.16 0.93 0.76 1.71 0.92 0.55 0.95 2.28 1.03 0.89 Ba 2741 1534 1569 1637 481 2551 2079 10391 1542 1403 1116 1623 882 1107 1346 1209 158 694 716 La 28.00 16.60 20.60 21.60 5.16 1.00 3.53 16.10 22.20 23.20 16.50 29.60 10.90 24.20 15.50 23.20 9.35 7.18 16.70 Ce 46.80 28.90 36.00 37.90 9.92 1.65 6.60 27.30 38.20 39.10 28.60 48.00 18.50 42.00 27.10 39.10 19.90 11.50 29.50 Pr 5.00 3.30 4.08 4.16 1.21 0.21 0.83 3.07 4.24 4.24 3.14 4.92 2.04 4.75 2.92 4.13 2.63 1.20 3.25 Nd 17.70 12.30 15.00 15.20 4.85 0.93 3.48 11.30 14.90 15.00 11.10 16.90 7.05 16.90 10.30 14.40 11.70 4.05 11.60 Sm 2.69 2.21 2.57 2.72 1.05 0.30 0.86 1.96 2.41 2.49 1.84 2.46 1.12 2.78 1.58 2.23 2.68 0.59 1.91 Eu 1.27 0.80 0.85 0.77 0.35 0.68 0.79 2.67 0.83 0.90 0.59 0.89 0.38 0.73 0.60 0.74 0.69 0.28 0.50 Gd 2.52 2.03 2.36 2.51 0.83 0.36 0.73 1.98 2.11 2.25 1.70 2.34 0.98 2.44 1.57 1.99 2.19 0.53 1.70 Tb 0.36 0.36 0.43 0.42 0.14 0.10 0.17 0.32 0.32 0.36 0.27 0.35 0.16 0.39 0.24 0.29 0.39 0.07 0.26 Dy 1.83 2.19 2.46 2.16 0.74 0.75 0.84 1.84 1.71 2.46 1.54 1.79 0.86 2.00 1.36 1.46 2.03 0.31 1.47 Ho 0.37 0.48 0.55 0.39 0.15 0.17 0.19 0.39 0.39 0.38 0.32 0.34 0.19 0.40 0.29 0.27 0.36 0.06 0.32 Er 1.12 1.44 1.59 1.12 0.44 0.46 0.69 1.14 1.03 1.10 0.93 1.01 0.58 1.18 0.92 0.90 0.94 0.20 0.85 Tm 0.21 0.29 0.32 0.21 0.09 0.10 0.14 0.22 0.20 0.21 0.18 0.19 0.11 0.21 0.18 0.16 0.15 0.04 0.16 Yb 1.32 1.98 2.09 1.52 0.54 0.65 1.02 1.53 1.36 1.29 1.30 1.14 0.68 1.40 1.21 1.01 0.93 0.26 1.16 Lu 0.19 0.29 0.30 0.19 0.08 0.09 0.17 0.23 0.19 0.19 0.19 0.16 0.10 0.21 0.19 0.16 0.12 0.04 0.17 W 0.84 0.73 0.21 4.27 0.61 1.55 0.53 4.71 2.05 2.76 1.82 2.32 2.71 1.18 2.86 1.32 4.78 5.89 1.90 Tl 0.59 0.53 0.52 0.85 0.52 0.63 0.63 0.88 0.66 0.63 0.79 0.64 1.01 0.50 0.62 0.62 0.61 0.73 0.81 Pb 28.80 27.20 26.90 27.70 22.90 37.40 23.00 33.30 13.60 12.30 11.20 16.00 25.90 109.00 16.20 18.20 9.00 7.48 7.16 Bi 0.03 0.05 0.07 0.64 0.07 0.04 0.47 0.93 0.16 0.03 0.07 0.18 1.67 0.11 0.98 2.69 0.30 0.37 0.07 Th 4.41 3.48 4.35 5.98 2.21 0.29 1.37 3.91 4.29 4.77 3.74 5.14 2.41 4.75 3.40 4.90 0.84 1.76 4.59 U 1.18 1.07 1.24 3.16 0.95 0.41 1.36 3.28 1.67 1.92 0.90 1.08 1.15 1.49 1.87 1.50 0.65 0.67 0.92 Nb 9.37 10.60 11.20 27.50 3.17 5.89 3.57 11.60 10.10 14.50 12.20 6.71 7.99 10.70 9.47 9.17 9.22 3.35 11.70 Ta 0.65 0.65 0.68 3.30 0.17 0.44 0.17 0.75 0.57 1.17 0.70 0.55 0.54 0.66 0.64 0.60 0.62 0.21 0.68 Zr 27.80 14.00 18.40 28.60 18.70 8.02 60.40 14.60 11.70 40.90 8.73 10.20 9.86 12.70 9.23 14.80 9.38 9.13 15.70 Hf 0.84 0.56 0.71 2.11 0.67 0.45 2.34 0.55 0.48 1.21 0.35 0.46 0.44 0.58 0.35 0.53 0.52 0.40 0.55 ΣREE 109.37 73.17 89.19 90.87 25.53 7.46 20.04 70.04 90.09 93.16 68.22 110.09 43.65 99.58 63.96 90.04 54.06 26.31 69.55 LREE 101.46 64.11 79.10 82.35 22.54 4.77 16.09 62.40 82.78 84.93 61.77 102.77 39.99 91.36 58.00 83.80 46.95 24.80 63.46 HREE 7.91 9.07 10.09 8.52 2.99 2.68 3.95 7.64 7.31 8.23 6.44 7.31 3.65 8.23 5.96 6.24 7.12 1.51 6.09 LREE/HREE 12.83 7.07 7.84 9.66 7.53 1.78 4.08 8.17 11.33 10.32 9.59 14.05 10.95 11.10 9.72 13.43 6.60 16.40 10.41 (La/Yb)N 0.56 0.74 0.81 9.60 6.52 1.04 2.34 7.11 0.68 0.32 0.45 0.62 0.36 0.61 0.45 0.45 0.59 0.29 0.47 δEu 2.15 1.77 0.51 8.20 2.02 4.32 1.33 8.48 4.86 6.71 3.70 5.83 4.88 3.33 7.04 3.42 13.02 15.30 3.86 δCe 3.92 3.73 3.68 3.72 3.79 3.42 4.19 3.77 3.50 3.77 3.74 3.85 3.82 3.88 3.87 4.20 3.66 3.98 3.53 注:主量元素含量单位为%,微量和稀土元素含量单位为10-6 表 2 谢家沟金矿床蚀变岩Isocon分析数据
Table 2 Isocon analyses of alteration rocks in the Xiejiagou gold deposit
元素 Cref 钾长石化样品组 Ci1 黄铁绢英岩化组 Ci2 含陡立石英脉黄铁绢英岩化组 Ci1 ΔCi Ci1/Cref scale Cref′ Ci1′ Ci2 ΔCi Ci2/Ci1 scale Ci1′ Ci2′ Ci3 ΔCi Ci3/Ci2 scale Ci2′ Ci3′ SiO2 70.70 72.31 -1.21 1.02 1.13 80.00 81.83 72.31 68.48 -1.10 0.95 1.13 81.83 77.49 68.48 70.81 0.38 1.03 1.13 77.49 80.13 Al2O3 14.55 13.98 0.96 0.96 5.43 79.00 75.91 13.98 14.54 1.04 1.04 5.43 75.91 78.95 14.54 14.14 0.97 0.97 5.43 78.95 76.78 Fe2O3 2.22 2.05 -0.25 0.92 9.46 21.00 19.41 2.05 4.46 2.59 2.17 9.46 19.41 42.18 4.46 3.72 -0.84 0.83 9.46 42.18 35.17 MgO 0.44 0.20 -0.24 0.46 174.83 77.00 35.67 0.20 0.45 0.27 2.23 174.83 35.67 79.52 0.45 0.40 -0.06 0.89 174.83 79.52 70.45 CaO 2.38 1.77 -0.68 0.74 31.90 76.00 56.58 1.77 2.35 0.67 1.33 31.90 56.58 75.06 2.35 1.52 -0.87 0.65 31.90 75.06 48.65 Na2O 3.96 3.84 -0.27 0.97 18.95 75.00 72.77 3.84 3.16 -0.56 0.82 18.95 72.77 59.85 3.16 3.37 0.12 1.07 18.95 59.85 63.87 K2O 3.61 4.21 0.43 1.17 20.49 74.00 86.25 4.21 3.72 -0.34 0.88 20.49 86.25 76.24 3.72 3.61 -0.21 0.97 20.49 76.24 73.91 MnO 0.06 0.04 -0.03 0.58 1160.92 73.00 42.57 0.04 0.06 0.03 1.70 1160.92 42.57 72.52 0.06 0.04 -0.02 0.69 1160.92 72.52 50.33 TiO2 0.20 0.06 -0.14 0.31 351.46 72.00 22.63 0.06 0.18 0.12 2.82 351.46 22.63 63.84 0.18 0.18 -0.01 0.97 351.46 63.84 61.68 P2O5 0.08 0.03 -0.05 0.42 881.26 71.00 29.97 0.03 0.05 0.02 1.55 881.26 29.97 46.58 0.05 0.06 0.00 1.08 881.26 46.58 50.33 FeO 1.79 1.49 -0.36 0.83 10.61 19.00 15.78 1.49 2.53 1.15 1.70 10.61 15.78 26.89 2.53 2.15 -0.45 0.85 10.61 26.89 22.76 Cr 36.90 71.45 31.75 1.94 0.46 17.00 32.91 71.45 77.80 9.47 1.09 0.46 32.91 35.84 77.80 74.18 -5.67 0.95 0.46 35.84 34.17 Co 2.68 4.97 2.09 1.85 1.87 5.00 9.27 4.97 16.56 12.26 3.34 1.87 9.27 30.94 16.56 39.40 21.75 2.38 1.87 30.94 73.59 Ni 6.53 9.04 2.15 1.38 1.07 7.00 9.68 9.04 12.45 3.91 1.38 1.07 9.68 13.34 12.45 13.58 0.76 1.09 1.07 13.34 14.55 Cu 5.28 9.26 3.62 1.75 1.70 9.00 15.79 9.26 12.08 3.30 1.30 1.70 15.79 20.60 12.08 8.89 -3.44 0.74 1.70 20.60 15.15 Zn 44.43 19.27 -25.92 0.43 1.35 60.00 26.02 19.27 36.60 18.80 1.90 1.35 26.02 49.42 36.60 31.72 -5.75 0.87 1.35 49.42 42.83 Rb 92.00 117 20.17 1.27 0.63 58.00 73.59 116.73 127.91 16.30 1.10 0.63 73.59 80.64 127.91 81.78 -48.39 0.64 0.63 80.64 51.56 Sr 814.00 400 -430 0.49 0.07 57.00 27.98 399.57 437.14 55.05 1.09 0.07 27.98 30.61 437.14 193.72 -248.76 0.44 0.07 30.61 13.57 Y 14.70 7.32 -14.70 0.50 3.81 56.00 27.88 7.32 9.84 2.91 1.34 3.81 27.88 37.49 9.84 5.11 -4.87 0.52 3.81 37.49 19.46 Mo 3.44 7.66 3.92 2.22 3.19 11.00 24.46 7.66 10.94 3.71 1.43 3.19 24.46 34.92 10.94 7.22 -3.91 0.66 3.19 34.92 23.06 Cs 0.72 0.83 0.08 1.16 70.67 51.00 58.94 0.83 1.09 0.30 1.31 70.67 58.94 77.03 1.09 0.98 -0.14 0.90 70.67 77.03 69.33 Ba 1948 2687 634.47 1.38 0.03 50.00 68.98 2687.43 1268.86 -1368 0.47 0.03 68.98 32.57 1268.86 489.40 -792.93 0.39 0.03 32.57 12.56 La 21.73 9.08 -13.01 0.42 2.25 49.00 20.46 9.08 21.40 13.18 2.36 2.25 20.46 48.25 21.40 8.22 -13.41 0.38 2.25 48.25 18.53 Ce 37.23 15.94 -21.91 0.43 1.29 48.00 20.55 15.94 36.21 21.72 2.27 1.29 20.55 46.69 36.21 14.79 -21.83 0.41 1.29 46.69 19.06 Pr 4.13 1.79 -2.41 0.43 11.39 47.00 20.40 1.79 3.92 214.17 2.19 11.39 20.40 44.68 3.92 1.70 -2.27 0.43 11.39 44.68 19.33 Nd 15.00 6.66 -8.60 0.44 3.07 46.00 20.42 6.66 13.75 33.42 2.06 3.07 20.42 42.17 13.75 6.47 -7.46 0.47 3.07 42.17 19.83 Sm 2.49 1.23 -1.31 0.49 17.67 44.00 21.78 1.23 2.19 1.05 1.78 17.67 21.78 38.70 2.19 1.20 -1.03 0.55 17.67 38.70 21.13 Eu 0.97 0.87 -0.13 0.90 43.25 42.00 37.84 0.87 0.72 -0.12 0.83 43.25 37.84 31.27 0.72 0.37 -0.37 0.51 43.25 31.27 15.89 Gd 2.30 1.16 -1.19 0.50 17.37 40.00 20.11 1.16 1.97 0.89 1.70 17.37 20.11 34.26 1.97 1.04 -0.96 0.53 17.37 34.26 18.01 Tb 0.38 0.20 -0.19 0.53 99.65 38.00 20.29 0.20 0.31 0.11 1.50 99.65 20.29 30.46 0.31 0.17 -0.14 0.56 99.65 30.46 16.92 Dy 2.16 1.13 -1.08 0.52 16.67 36.00 18.79 1.13 1.69 0.63 1.50 16.67 18.79 28.13 1.69 0.91 -0.80 0.54 16.67 28.13 15.13 Ho 0.47 0.23 -0.24 0.50 73.07 34.00 16.99 0.23 0.33 0.11 1.40 73.07 16.99 23.79 0.33 0.18 -0.33 0.56 73.07 23.79 13.25 Er 1.38 0.70 -0.71 0.51 23.13 32.00 16.28 0.70 0.96 0.30 1.37 23.13 16.28 22.24 0.96 0.49 -0.48 0.51 23.13 22.24 11.38 Tm 0.27 0.14 -0.14 0.51 110.70 30.00 15.36 0.14 0.18 0.05 1.29 110.70 15.36 19.88 0.18 0.09 -0.09 0.49 110.70 19.88 9.83 Yb 1.80 0.96 -0.87 0.53 15.58 28.00 14.95 0.96 1.17 0.26 1.22 15.58 14.95 18.22 1.17 0.58 -0.60 0.50 15.58 18.22 9.08 Lu 0.26 0.14 -0.12 0.54 100.13 26.00 14.12 0.14 0.17 0.04 1.21 100.13 14.12 17.09 0.17 0.08 -0.09 0.48 100.13 17.09 8.25 Pb 27.63 27.19 -1.51 0.98 0.65 18.00 17.71 27.19 29.46 3.45 1.08 0.65 17.71 19.19 29.46 63.17 31.97 2.14 0.65 19.19 41.15 Th 4.08 2.49 -1.69 0.61 3.43 14.00 8.55 2.49 4.29 1.97 1.72 3.43 8.55 14.71 4.29 1.78 -2.55 0.42 3.43 14.71 6.12 U 1.16 1.61 0.38 1.38 10.32 12.00 16.61 1.61 1.39 -0.17 0.86 10.32 16.61 14.31 1.39 0.69 -0.71 0.50 10.32 14.31 7.14 Nb 10.39 8.99 -1.75 0.87 0.96 10.00 8.65 8.99 10.20 1.61 1.13 0.96 8.65 9.81 10.20 5.81 -4.55 0.57 0.96 9.81 5.59 Ta 0.66 0.80 0.11 1.21 12.13 8.00 9.67 0.80 0.68 -0.78 0.86 12.13 9.67 8.30 0.68 0.40 -0.30 0.58 12.13 8.30 4.80 Zr 20.07 20.85 -0.03 1.04 0.30 6.00 6.24 20.85 15.56 -4.68 0.75 0.30 6.24 4.65 15.56 8.18 -7.60 0.53 0.30 4.65 2.45 Hf 0.70 0.96 0.22 1.37 5.69 4.00 5.48 0.96 0.58 -0.36 0.60 5.69 5.48 3.28 0.58 0.35 -0.24 0.60 5.69 3.28 1.98 注:Cref和Cref'代表玲珑黑云母花岗岩样品元素含量原始值(平均值)和按比例计算过后的值;Ci1和Ci1'代表钾长石化带样品元素含量原始值(平均值)和按比例计算过后的值;Ci2和Ci2'代表黄铁绢英岩带样品元素含量原始值(平均值)和按比例计算过后的值;Ci3和Ci3'代表含陡立石英脉黄铁绢英岩带样品元素含量原始值(平均值)和按比例计算过后的值;元素和氧化物组分含量根据Grant[14]、Mori[39]的方法确定scale(比例)进行投点 -
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