东昆仑小灶火地区钼矿化正长花岗岩年代学、地球化学特征及其地质意义
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陈静,胡继春,逯永卓,卢世银,王树林,徐贝贝
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Geochronology,Geochemical Characteristics of Molybdenum Ore-bearing Syenogranite from Xiaozhaohuo Area in East Kunlun and Its Geological Significance
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Jing CHEN,Jichun HU,Yongzhuo LU,Shiying LU,Shulin WANG,Beibei XU
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表2 正长花岗岩主量、稀土微量元素含量及参数特征
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元素 | 样品编号及元素含量 | 样品一 | 样品二 | 样品三 | 样品四 | SiO2 | 73.51 | 73.02 | 77.20 | 77.36 | TiO2 | 0.30 | 0.28 | 0.09 | 0.09 | Al2O3 | 13.82 | 13.77 | 12.18 | 11.98 | Fe2O3 | 0.96 | 1.44 | 0.64 | 0.66 | FeO | 0.77 | 0.71 | 0.35 | 0.38 | MnO | 0.044 | 0.042 | 0.03 | 0.02 | MgO | 0.58 | 0.34 | 0.19 | 0.21 | CaO | 0.86 | 0.94 | 0.74 | 0.75 | Na2O | 3.29 | 3.63 | 3.53 | 3.42 | K2O | 4.6 | 4.96 | 4.6 | 4.59 | P2O5 | 0.08 | 0.066 | 0.01 | 0.02 | H2O+ | 1.14 | 0.68 | 0.48 | 0.80 | LOS | 0.61 | 0.17 | 0.26 | 0.20 | A/CNK | 1.156 | 1.055 | 1.004 | 1.002 | La | 34.5 | 30.7 | 23.4 | 20.8 | Ce | 61.93 | 62.04 | 52.06 | 43.34 | Pr | 8.83 | 7.45 | 6.03 | 5.20 | Nd | 25.90 | 24.70 | 20.70 | 17.30 | Sm | 4.94 | 4.27 | 3.66 | 3.01 | Eu | 1.08 | 1.03 | 0.83 | 0.79 | Gd | 3.62 | 3.62 | 2.82 | 2.48 | Tb | 0.57 | 0.54 | 0.38 | 0.37 | Dy | 2.59 | 2.78 | 1.70 | 1.83 | Ho | 0.59 | 0.58 | 0.31 | 0.35 | Er | 1.31 | 1.23 | 1.542 | 1.282 | Tm | 0.25 | 0.29 | 0.12 | 0.15 | Yb | 1.49 | 1.93 | 0.72 | 0.96 | Lu | 0.25 | 0.32 | 0.11 | 0.15 | Rb | 1 90 | 1 61 | 203.2 | 214.3 | Ba | 897 | 887 | 359.1 | 450.8 | Th | 8.94 | 25.00 | 16.23 | 16.72 | Ta | 0.76 | 1.24 | 1.633 | 1.333 | Nb | 10.60 | 12.50 | 16.92 | 14.57 | Hf | 4.05 | 4.89 | 2.931 | 2.728 | Zr | 148 | 166 | 72.98 | 70.65 | Sm | 4.13 | 3.79 | 4.272 | 3.198 | Y | 13.00 | 12.10 | 16.27 | 13.81 | Sr | 206 | 345 | 63.82 | 70.47 | ΣREE | 147.85 | 141.48 | 114.38 | 98.01 | (La/Yb)N | 16.61 | 11.41 | 23.31 | 15.54 | σEu | 0.75 | 0.78 | 0.76 | 0.86 |
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