乌兰茶卡北山含矿伟晶岩地球化学特征及地质意义

王建国,张世珍,邢佳,王志男,魏生云,胡建

Geochemical Characteristics and Geological Significance of Ore-bearing Pegmatites in the Wulan Chakabeishan Area

Jianguo WANG,Shizhen ZHANG,Jia XING,Zhinan WANG,Shengyun WEI,Jian HU

表3 乌兰茶卡北山含矿伟晶岩稀土元素组成

Table 3 Rare earth elements composition of ore-bearing pegmatites in the Wulan Chakabeishan

元素 样品编号及测试结果/（×10-6） CKBS-1 CKBS-2 CKBS-3 CKBS-4 CKBS-5 CKBS-6 La 71.80 61.10 94.30 102.00 44.20 30.30 Ce 151.50 121.00 177.50 192.50 88.60 66.60 Pr 18.10 13.95 19.10 20.40 10.55 8.01 Nd 68.90 50.80 65.90 68.20 39.10 31.20 Sm 12.30 11.25 9.91 10.35 8.79 8.41 Eu 2.85 0.92 1.83 1.95 0.71 0.75 Gd 8.68 11.80 5.76 5.90 7.66 8.22 Tb 1.14 1.99 0.67 0.70 1.21 1.42 Dy 5.67 11.30 2.68 2.67 6.41 7.85 Ho 1.04 2.27 0.37 0.38 1.10 1.40 Er 2.74 6.22 0.70 0.77 2.79 3.64 Tm 0.36 0.85 0.08 0.09 0.38 0.51 Yb 2.25 5.09 0.41 0.44 2.16 2.89 Lu 0.33 0.72 0.05 0.06 0.30 0.39 ΣREE 347.66 299.26 379.26 406.41 213.96 171.59 LREE 325.45 259.02 368.54 395.4 191.95 145.27 HREE 22.21 40.24 10.72 11.01 22.01 26.32 LREE/HREE 14.65 6.44 34.38 35.91 8.72 5.52 LaN/YbN 22.89 8.61 164.98 166.28 14.68 7.52 LaN/SmN 5.84 5.43 9.52 9.86 5.03 3.60 δEu 0.80 0.24 0.68 0.70 0.26 0.27 δCe 1.00 0.98 0.97 0.98 0.97 1.03