Analysis on the Characteristics of Mt. Emei Basalt Rock and Fiber-Used Basalt Deposit in E’bian Area, Sichuan Province
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摘要:
峨边地区出露的二叠纪峨眉山玄武岩组地层多以溢流相为主，岩石呈深灰色-灰绿色，根据其成因及结构组分特征，可将峨边地区峨眉山玄武岩划分为斑状玄武岩、致密玄武岩、气孔-杏仁玄武岩、凝灰质玄武岩四种岩石类型。并对玄武岩岩石、化学特征开展研究，研究表明区内存在符合拉丝的纤维用玄武岩，具有较好的开发利用前景。
Abstract:The Permian Emeishan basalt formations exposed in the E’bian area are mostly overflow facies, and the rocks are dark gray to gray-green. According to their genesis and structural composition characteristics, the Emeishan basalts in the E’bian area can be divided into porphyry There are four rock types: compactbasalt, porphyriticbasalt, stomata-almond basalt, and tuffaceous basalt. Research on the rock and chemical characteristics of basalt has been carried out, and the research shows that there is fiber-used basalt in the area that is suitable for drawing, which has a good development and utilization prospect.
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表 1 峨边地区峨眉山玄武岩样品主量元素分析成果
Table 1. Results of major element analysis of Emeishan basalt samples in Ebian area
样品编号 岩性 计量单位/% 总铁 酸度系数
/Ma黏度系数
/MvSiO2 Al2O3 Fe2O3 FeO CaO MgO K2O Na2O TiO2 MnO P2O5 H2O- L.O.I ZK0-1-ZH1 致密状玄武岩 50.55 12.96 6.84 6.74 6.73 4.01 0.81 3.51 4.12 0.22 0.40 0.61 1.39 13.58 5.91 2.04 ZK0-1-ZH2 杏仁状玄武岩 51.72 12.74 7.57 6.37 6.25 3.98 0.21 5.07 2.70 0.19 0.25 0.43 1.78 13.95 6.30 2.11 ZK0-1-ZH3 致密状玄武岩 49.51 13.00 5.80 8.20 7.28 4.79 1.05 4.25 2.71 0.22 0.26 0.45 1.58 14.00 5.18 1.85 ZK0-1-ZH4 含斜斑杏仁致密玄武岩 50.45 13.19 3.26 8.73 6.92 4.27 2.42 3.20 3.77 0.21 0.41 0.52 1.48 11.99 5.69 1.95 ZK0-1-ZH5 含杏仁致密玄武岩 47.27 13.01 4.93 7.39 7.92 4.58 2.06 2.74 3.86 0.16 0.43 0.65 1.86 12.32 4.82 1.81 ZK0-1-ZH6 凝灰质角砾岩 48.68 13.83 6.80 5.39 5.90 3.83 1.48 4.78 4.14 0.14 0.55 0.37 1.92 12.20 6.42 2.03 ZK0-1-ZH7 凝灰质玄武岩 50.55 12.29 5.50 6.46 5.84 4.46 1.19 3.93 3.84 0.17 0.42 0.40 2.25 11.96 6.10 2.07 ZK0-1-ZH8 致密状玄武岩 47.43 13.13 5.48 6.89 8.51 4.46 1.74 2.14 3.92 0.16 0.45 0.75 1.74 12.37 4.67 1.85 ZK0-2-ZH1 致密状玄武岩 48.58 12.88 6.84 6.26 7.69 4.03 0.90 2.96 3.83 0.17 0.40 0.52 1.69 13.10 5.24 1.97 ZK0-2-ZH2 致密状玄武岩 48.08 12.88 6.73 7.45 7.32 4.89 1.10 3.65 2.58 0.23 0.27 0.38 1.50 14.19 4.99 1.84 ZK0-2-ZH3 致密状玄武岩 47.19 13.13 4.97 7.37 7.57 4.44 2.05 3.01 3.85 0.16 0.44 0.60 1.89 12.34 5.02 1.83 EB2-H1 青灰色杏仁玄武岩 49.08 13.72 2.23 9.08 8.92 4.78 1.63 2.21 3.78 0.13 0.44 0.86 2.88 11.31 4.58 1.83 EB2-H2 灰绿色致密玄武岩 50.46 13.85 4.03 7.47 6.15 4.64 2.39 3.35 3.71 0.19 0.38 1.07 2.62 11.50 5.96 2.03 EB4-H1 斜斑玄武岩 48.75 14.03 4.88 7.94 8.24 4.22 1.78 2.08 4.59 0.17 0.37 0.8 2.5 12.82 5.04 1.88 EB5-H1 致密玄武岩 47.70 13.57 5.15 8.57 8.96 4.77 1.06 1.83 4.96 0.18 0.43 0.12 2.4 13.72 4.46 1.73 EB6-H1 斜斑玄武岩 47.08 14.18 5.32 9.02 9.35 4.14 1.00 2.11 4.54 0.2 0.39 0.52 2.19 14.34 4.54 1.73 平均值 48.94 13.27 5.40 7.46 7.47 4.39 1.43 3.18 3.81 0.18 0.39 0.57 1.98 12.85 5.31 1.91 
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表 2 峨边地区峨眉山玄武岩痕量及稀有元素分析成果/（g·t-1）
Table 2. Results of trace and rare element analysis of Emeishan basalt in Ebian area
样品号
元素ZK0-1-ZH1 ZK0-1-ZH2 ZK0-1-ZH3 ZK0-1-ZH4 ZK0-1-ZH5 ZK0-1-ZH6 ZK0-1-ZH7 ZK0-1-ZH8 ZK0-2-ZH1 ZK0-2-ZH2 ZK0-2-ZH3 S 107.00 106.00 115.00 139.00 120.00 85.20 106.00 120.00 116.00 115.00 124.00 Cl 71.30 129.00 127.00 71.10 72.00 72.90 107.00 56.00 87.80 110.00 88.00 Ni 37.60 45.30 45.70 39.50 62.60 57.70 62.20 63.10 38.40 46.70 52.70 Cu 225.00 220.00 238.00 264.00 240.00 188.00 155.00 238.00 256.00 279.00 266.00 Rb 28.40 6.13 34.90 56.30 59.70 28.00 32.50 51.10 29.00 39.80 78.80 Sr 502.00 266.00 444.00 424.00 540.00 521.00 361.00 513.00 540.00 502.00 569.00 Y 41.70 28.90 29.40 36.90 34.80 36.40 34.70 36.30 41.60 31.80 38.90 Zr 369.00 206.00 208.00 369.00 383.00 392.00 373.00 394.00 370.00 216.00 387.00 Nb 36.20 25.20 23.20 36.00 41.90 44.20 40.60 43.20 39.70 26.20 40.50 Ba 420.00 65.40 498.00 831.00 640.00 285.00 362.00 555.00 571.00 476.00 528.00 La 46.60 29.90 27.40 47.50 55.00 58.00 42.90 52.60 50.00 28.40 51.30 Ce 99.10 61.20 57.40 100.00 114.00 117.00 97.90 113.00 103.00 57.60 109.00 Pr 13.10 7.77 7.19 13.30 14.60 14.80 13.10 14.50 13.80 7.68 13.90 Nd 56.80 32.90 31.00 56.00 60.70 60.50 56.10 61.20 58.90 33.00 59.80 Sm 12.90 7.53 7.28 12.20 12.60 13.00 11.90 12.60 13.20 7.74 13.10 Eu 3.46 2.17 2.16 3.24 3.47 3.54 3.18 3.46 3.58 2.24 3.45 Gd 11.80 7.36 7.07 10.80 11.00 11.20 10.30 11.20 12.00 7.71 11.70 Tb 1.78 1.11 1.07 1.57 1.59 1.61 1.54 1.62 1.79 1.19 1.71 Dy 9.39 6.05 6.21 8.19 8.15 8.27 7.95 8.35 9.52 6.83 8.79 Ho 1.84 1.28 1.28 1.59 1.59 1.59 1.54 1.62 1.87 1.40 1.69 Er 4.71 3.45 3.46 4.11 4.00 4.10 3.96 4.17 4.74 3.74 4.40 Tm 0.64 0.47 0.48 0.56 0.53 0.53 0.53 0.55 0.65 0.54 0.58 Yb 3.89 3.05 3.17 3.56 3.26 3.24 3.26 3.41 3.96 3.41 3.68 Lu 0.55 0.45 0.48 0.50 0.49 0.47 0.45 0.48 0.57 0.51 0.53 Hf 9.18 5.67 7.27 8.83 9.43 11.00 10.20 9.52 10.30 5.57 10.00 Ta 2.54 1.56 1.94 2.49 2.83 2.99 2.78 3.07 2.95 1.62 2.71 Th 7.59 4.49 4.24 9.59 7.24 7.58 7.10 7.31 7.61 4.35 7.40 U 1.65 1.02 0.99 2.08 1.65 1.60 1.38 1.68 1.75 0.97 1.60 ∑REE 266.56 164.69 155.65 263.12 290.98 297.85 254.61 288.76 277.57 161.99 283.63 LREE 231.96 141.47 132.43 232.24 260.37 266.84 225.08 257.36 242.48 136.66 250.55 HREE 34.60 23.22 23.22 30.88 30.61 31.01 29.53 31.40 35.09 25.33 33.08 LREE/HREE 6.70 6.09 5.70 7.52 8.51 8.61 7.62 8.20 6.91 5.40 7.57 δEu4 0.28 0.29 0.30 0.28 0.29 0.29 0.29 0.29 0.28 0.29 0.28 δCe5 3.32 3.25 3.32 3.29 3.28 3.21 3.50 3.37 3.23 3.19 3.34
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表 3 纤维用玄武岩矿化学成分指标/%
Table 3. Chemical composition index of basalt ore for fiber
元素 SiO2 Al2O3 Fe2O3+FeO K2O Na2O CaO MgO TiO2 L.O.I 范围 47~53 13~18 9~14 0.5~3.5 2~4 6~9 3·6 1~5 ≤
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