喜马拉雅夏如淡色花岗岩⁃伟晶岩的矿物学特征
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程飞越, 谢磊, 陈小明
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Mineralogical characteristics of the Xiaru leucogranite⁃pegmatite in the Himalayan oregen
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Feiyue Cheng, Lei Xie, Xiaoming Chen
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表1 夏如淡色花岗岩?伟晶岩的全岩主量(wt.%)和微量成分(×10-6)分析结果
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Table 1 Whole?rock major (wt.%) and trace (×10-6) elements of the Xiaru leucogranite?pegmatite
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岩性 | 未矿化白云母花岗岩 | | 含钨白云母花岗岩 | | 含铌钽钨白云母花岗岩 | | 含铌钽伟晶岩 | | 岩性 | 未矿化白云母花岗岩 | | 含钨白云母花岗岩 | | 含铌钽钨白云母花岗岩 | | 含铌钽伟晶岩 |
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样号 | 20XZ05 | 20XZ34A | | 19XZ124 | | 19XZ122🞷 | | 19XZ123🞷 | 20XZ34B | 20XZ36 | | 样号 | 20XZ05 | 20XZ34A | | 19XZ124 | | 19XZ122🞷 | | 19XZ123🞷 | 20XZ34B | 20XZ36 | SiO2(wt.%) | 72.61 | 72.66 | | 75.52 | | 75.53 | | 72.87 | 72.29 | 74.86 | | Sr | 37 | 27 | | 10 | | 5.4 | | 10 | 19 | 12 | TiO2 | 0.12 | 0.09 | | 0.08 | | 0.04 | | 0.04 | 0.03 | 0.01 | | Y | 60 | 38 | | 12 | | 4.4 | | 8.0 | 14 | 7.6 | Al2O3 | 15.05 | 15.14 | | 13.17 | | 13.52 | | 15.43 | 15.94 | 14.02 | | Zr | 93 | 67 | | 43 | | 20 | | 6.7 | 30 | 28 | FeO | 0.11 | 0.16 | | 0.07 | | 0.11 | | 0.14 | 0.15 | 0.12 | | Nb | 36 | 36 | | 32 | | 58 | | 39 | 72 | 56 | Fe2O3 | 0.83 | 1.08 | | 1.07 | | 0.70 | | 0.55 | 0.37 | 0.08 | | Mo | 0.15 | 0.27 | | 0.17 | | 0.10 | | 0.55 | 0.70 | 0.27 | MnO | 0.03 | 0.06 | | 0.05 | | 0.02 | | 0.02 | 0.22 | 0.06 | | Sn | 24 | 28 | | 25 | | 9.1 | | 24 | 9.1 | 1.9 | MgO | 0.09 | 0.13 | | 0.15 | | 0.06 | | 0.07 | 0.07 | 0.07 | | Cs | 61 | 108 | | 50 | | 30 | | 41 | 86 | 22 | CaO | 0.38 | 0.75 | | 0.56 | | 0.48 | | 0.49 | 0.36 | 0.69 | | Ba | 95 | 78 | | 24 | | 4.4 | | 15 | 16 | 3.4 | Na2O | 3.20 | 3.44 | | 3.18 | | 4.63 | | 4.26 | 6.02 | 5.82 | | La | 21 | 11 | | 4.9 | | 1.2 | | 1.9 | 4.3 | 3.2 | K2O | 5.29 | 5.00 | | 4.84 | | 3.98 | | 5.10 | 3.74 | 3.41 | | Ce | 44 | 25 | | 14 | | 3.6 | | 5.0 | 9.6 | 7.3 | P2O5 | 0.04 | 0.21 | | 0.24 | | 0.24 | | 0.26 | 0.04 | 0.02 | | Pr | 4.7 | 2.9 | | 1.2 | | 0.36 | | 0.61 | 1.1 | 0.83 | H2O | 0.49 | 0.35 | | 0.27 | | 0.23 | | 0.28 | 0.34 | 0.34 | | Nd | 16 | 11 | | 4.2 | | 1.1 | | 2.1 | 3.4 | 2.8 | LOI | 0.89 | 0.79 | | 0.78 | | 0.46 | | 0.39 | 0.32 | 0.64 | | Sm | 4.2 | 3.4 | | 1.3 | | 0.56 | | 1.0 | 1.4 | 1.4 | 总量 | 99.14 | 99.85 | | 99.98 | | 99.98 | | 99.91 | 99.90 | 100.14 | | Eu | 0.26 | 0.19 | | 0.06 | | 0.02 | | 0.06 | 0.03 | 0.04 | F | 0.14 | 0.15 | | 0.13 | | 0.08 | | 0.08 | 0.04 | 0.02 | | Gd | 4.3 | 3.7 | | 1.3 | | 0.54 | | 1.0 | 1.3 | 1.2 | K2O+Na2O | 8.49 | 8.44 | | 8.02 | | 8.61 | | 9.35 | 9.77 | 9.23 | | Tb | 1.1 | 0.84 | | 0.30 | | 0.14 | | 0.26 | 0.35 | 0.24 | A/CNK | 1.29 | 1.22 | | 1.15 | | 1.06 | | 1.15 | 1.09 | 0.97 | | Dy | 8.2 | 5.8 | | 2.1 | | 0.92 | | 1.5 | 2.1 | 1.3 | A/NK | 1.37 | 1.37 | | 1.26 | | 1.13 | | 1.23 | 1.14 | 1.06 | | Ho | 1.9 | 1.2 | | 0.41 | | 0.15 | | 0.22 | 0.32 | 0.19 | | | | | | | | | | | | | Er | 5.9 | 3.4 | | 1.2 | | 0.43 | | 0.55 | 0.84 | 0.46 | Li(×10-6) | 146 | 124 | | 149 | | 31 | | 63 | 28 | 24 | | Tm | 1.1 | 0.59 | | 0.21 | | 0.10 | | 0.10 | 0.15 | 0.08 | Be | 7.3 | 26 | | 5.3 | | 4.6 | | 6.5 | 17 | 40 | | Yb | 7.1 | 3.9 | | 1.4 | | 0.88 | | 0.65 | 1.0 | 0.51 | B | 197 | 376 | | 593 | | 780 | | 229 | 61 | 8.1 | | Lu | 1.0 | 0.56 | | 0.20 | | 0.12 | | 0.08 | 0.12 | 0.07 | Sc | 5.9 | 4.8 | | 1.2 | | 2.3 | | 9.9 | 1.4 | 0.41 | | Hf | 3.4 | 2.6 | | 2.0 | | 1.5 | | 0.29 | 2.3 | 1.4 | Ti | 751 | 661 | | 467 | | 220 | | 258 | 191 | 50 | | Ta | 8.6 | 7.8 | | 9.5 | | 17 | | 6.0 | 19 | 18 | V | 2.7 | 2.8 | | 2.5 | | 0.31 | | 0.42 | 1.8 | 0.29 | | W | 56 | 19 | | 36 | | 67 | | 15 | 3.4 | 2.7 | Cr | 3.3 | 5.4 | | 0.77 | | 0.60 | | 7.6 | 8.3 | 4.1 | | Pb | 30 | 36 | | 21 | | 19 | | 26 | 35 | 41 | Mn | 214 | 512 | | 342 | | 124 | | 146 | 1750 | 389 | | Th | 25 | 15 | | 6.4 | | 4.3 | | 1.9 | 6.8 | 3.3 | Co | 0.68 | 0.91 | | 0.58 | | 0.19 | | 0.39 | 0.15 | 0.19 | | U | 8.8 | 6.7 | | 2.4 | | 2.1 | | 2.0 | 11 | 4.1 | Ni | 1.6 | 2.4 | | 0.55 | | 0.23 | | 3.4 | 3.6 | 2.0 | | ΣREE | 120.60 | 74.45 | | 32.42 | | 10.16 | | 15.13 | 25.99 | 19.62 | Cu | 3.9 | 2.6 | | 0.67 | | 0.38 | | 0.85 | 6.2 | 1.8 | | δEu | 0.18 | 0.16 | | 0.13 | | 0.12 | | 0.17 | 0.07 | 0.08 | Zn | 22 | 30 | | 20 | | 12 | | 19 | 26 | 12 | | Tzr | 759.90 | 729.07 | | 694.65 | | 635.80 | | 572.49 | 659.52 | 648.34 | Ga | 22 | 22 | | 13 | | 17 | | 26 | 32 | 21 | | Nb/Ta | 4.14 | 4.69 | | 3.41 | | 3.42 | | 6.57 | 3.70 | 3.08 | As | 1.2 | 0.74 | | 1.0 | | 0.16 | | 1.0 | 1.1 | 1.7 | | Zr/Hf | 27.38 | 26.33 | | 21.69 | | 13.69 | | 22.93 | 12.98 | 19.57 | Se | 0.72 | 0.53 | | 0.20 | | 0.13 | | 0.30 | 0.15 | 0.23 | | Rb/Sr | 21.09 | 39.96 | | 78.87 | | 101.29 | | 75.20 | 35.17 | 41.54 | Rb | 771 | 1085 | | 790 | | 543 | | 758 | 675 | 486 | | TE1,3 | 1.08 | 1.11 | | 1.21 | | 1.40 | | 1.35 | 1.33 | 1.29 |
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