柴北缘夏日达乌铌钽矿区花岗岩地球化学特征及地质意义
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魏生云,王建国,郭学忠,邢佳
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Geochemical Characteristics and Geological Significance of Granite in Xiaridawu Niobium-Tantalum Mining Area,Northern Margin of Qaidam Basin
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Shengyun WEI,Jianguo WANG,Xuezhong GUO,Jia XING
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表1 研究区铌钽矿样品主量元素分析结果
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Table 1 Analysis results of major elements of niobium-tantalum ore samples in study area
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元素(化合物) | 各样品主量元素含量 |
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DS1-Wu | DS2-Wu | DS3-Wu | DS4-Wu | DS5-Wu | DS6-Wu | DS7-Wu | DS8-Wu | DS9-Wu | DS10-Wu |
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SiO2 | 76.41 | 77.22 | 75.26 | 76.81 | 75.05 | 75.65 | 76.71 | 78.84 | 77.79 | 77.94 | TiO2 | 0.07 | 0.13 | 0.12 | 0.12 | 0.14 | 0.13 | 0.12 | 0.12 | 0.12 | 0.12 | Al2O3 | 13.14 | 12.68 | 13.61 | 12.74 | 13.81 | 13.14 | 12.54 | 11.94 | 12.55 | 12.44 | Fe2O3 | 0.58 | 0.06 | 0.16 | 0.05 | 0.14 | 0.21 | 0.12 | 0.07 | 0.15 | 0.08 | FeO | 0.46 | 0.10 | 0.22 | 0.10 | 0.18 | 0.10 | 0.10 | 0.10 | 0.17 | 0.20 | MnO | 0.06 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.01 | 0.01 | MgO | 0.18 | 0.08 | 0.14 | 0.09 | 0.20 | 0.21 | 0.11 | 0.15 | 0.09 | 0.07 | CaO | 0.29 | 0.04 | 0.11 | 0.06 | 0.15 | 0.15 | 0.10 | 0.06 | 0.05 | 0.04 | Na2O | 1.92 | 0.25 | 0.32 | 0.23 | 0.33 | 0.31 | 1.69 | 0.21 | 0.23 | 0.21 | K2O | 4.92 | 7.54 | 6.70 | 6.94 | 6.84 | 7.13 | 6.98 | 6.68 | 6.22 | 6.78 | P2O5 | 0.02 | 0.02 | 0.02 | 0.02 | 0.02 | 0.02 | 0.02 | 0.02 | 0.02 | 0.02 | LOI | 1.18 | 0.98 | 1.23 | 2.03 | 0.56 | 0.97 | 2.12 | 2.41 | 3.02 | 1.82 | Total | 98.05 | 98.12 | 96.66 | 97.16 | 96.86 | 97.05 | 98.49 | 98.19 | 97.40 | 97.91 | ALK | 6.84 | 7.79 | 7.02 | 7.17 | 7.17 | 7.44 | 8.67 | 6.89 | 6.45 | 6.99 | A/NK | 1.55 | 1.48 | 1.75 | 1.61 | 1.73 | 1.59 | 1.21 | 1.57 | 1.76 | 1.62 | A/CNK | 1.46 | 1.46 | 1.70 | 1.59 | 1.68 | 1.54 | 1.19 | 1.55 | 1.74 | 1.60 | AR | 3.08 | 4.16 | 3.10 | 3.55 | 3.11 | 3.54 | 5.37 | 3.70 | 3.10 | 3.55 | δ | 1.40 | 1.77 | 1.53 | 1.52 | 1.60 | 1.70 | 2.23 | 1.32 | 1.20 | 1.40 | SI | 2.23 | 1.00 | 1.86 | 1.21 | 2.60 | 2.64 | 1.22 | 2.08 | 1.31 | 0.95 |
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