地学前缘 ›› 2026, Vol. 33 ›› Issue (2): 195-222.DOI: 10.13745/j.esf.sf.2024.10.61
鞠楠1,2(
), 刘博3,1,*(), 马婧轩3, 辛后田1, 刘欣1, 伍月1, 施璐1, 樊金虎4, 杨高5, 曾维顺6
收稿日期:2024-05-27
修回日期:2024-09-02
出版日期:2026-03-25
发布日期:2026-01-29
通信作者:
刘 博(1988—),男,副教授,主要从事大地构造学与区域成矿作用研究工作。E-mail: 作者简介:鞠 楠(1986—),男,高级工程师,主要从事固体矿产勘查与研究工作。E-mail: junan@mail.cgs.gov.cn
基金资助:
JU Nan1,2(), LIU Bo3,1,*(), MA Jingxuan3, XIN Houtian1, LIU Xin1, WU Yue1, SHI Lu1, FAN Jinhu4, YANG Gao5, ZENG Weishun6
Received:2024-05-27
Revised:2024-09-02
Online:2026-03-25
Published:2026-01-29
摘要：
辽宁中部生铁岭稀土矿床产于古元古代胶-辽-吉构造带南辽河群内,有关其赋矿层位里尔峪组磁铁变粒岩研究程度偏低。本文对生铁岭稀土矿磁铁变粒岩开展岩相学、锆石和独居石U-Pb年代学和微量元素分析、全岩地球化学研究,以约束其岩石成因和构造背景,并对其成因类型进行初步探讨。岩相学、背散射图像、电子探针和独居石激光剥蚀电感耦合等离子体质谱仪(laser ablation inductively coupled plasma mass spectrometry,LA-ICP-MS)原位微区微量元素研究结果显示,生铁岭稀土矿产于里尔峪组磁铁斜长变粒岩和含磁铁黑云斜长变粒岩中,主要稀土矿物为独居石、磷钇矿和磷灰石等。锆石和独居石U-Pb年代学结果表明,生铁岭磁铁变粒岩最大沉积年龄为1.95 Ga(岩浆成因碎屑锆石),变质作用发生在1.90~1.87 Ga(变质锆石和独居石)。磁铁变粒岩Th-Sc-Zr/10和Th-Co-Zr/10图解显示样品落入大陆岛弧区域,结合区域上已发表的辽河群变沉积岩资料,认为其原岩可能是俯冲作用下的岛弧相关沉积。磁铁变粒岩样品的变质作用时限(1.90~1.87 Ga)与区域上辽河群中普遍记录的区域变质作用时限一致,形成于胶-辽-吉构造带形成过程中的弧-陆碰撞作用。综合磁铁变粒岩的稀土元素赋存特征、岩石成因和构造产出环境,推测其成因类型应为火山-沉积变质型。该认识为辽宁地区寻找火山-沉积变质型稀土矿提供了理论依据,产自辽河群里尔峪组的磁铁变粒岩是重要找矿标志。
中图分类号:
鞠楠, 刘博, 马婧轩, 辛后田, 刘欣, 伍月, 施璐, 樊金虎, 杨高, 曾维顺. 辽宁生铁岭稀土矿磁铁变粒岩年代学和地球化学特征及其矿床成因类型初探[J]. 地学前缘, 2026, 33(2): 195-222.
JU Nan, LIU Bo, MA Jingxuan, XIN Houtian, LIU Xin, WU Yue, SHI Lu, FAN Jinhu, YANG Gao, ZENG Weishun. Geochronology and geochemistry of magnetite leptynite from Shengtieling rare earth element deposit in Liaoning Province with its genetic type[J]. Earth Science Frontiers, 2026, 33(2): 195-222.
图1 东北地区稀土矿床分布图(a)和胶-辽-吉构造带区域地质图(b)(a据文献[16]补充修改;b据文献[33]修改) HHS—贺根山—黑河缝合带;SXCYS—索伦—西拉木伦河—长春—延吉缝合带;MYS—牡丹江—依兰缝合带。
Fig.1 Distribution map of rare earth element deposits in Northeast China (a); Regional geological map showing the location of the Jiao-Liao-Ji Belt (b). a modified after [16]; b modified after [33].
图2 辽宁生铁岭稀土矿床矿区地质图
Fig.2 Geological map of Shengtieling REE deposit section
图3 生铁岭稀土矿磁铁变粒岩野外地质特征 (a)—基岩层与半风化层野外观测界线;(b)—基岩层;(c)—半风化层。
Fig.3 Field geological characteristics of magnetite leptynite samples in Shengtieling REE deposit
图4 生铁岭地区磁铁变粒岩样品手标本及镜下特征 (a)—电气磁铁斜长变粒岩(ST2201)手标本;(b)—磁铁斜长变粒岩(ST2202)手标本;(c)—含磁铁黑云斜长变粒岩(ST2203)手标本。(a-1)—电气磁铁斜长变粒岩(ST2201)岩相镜下特征;(b-1)—磁铁斜长变粒岩(ST2202)岩相镜下特征;(c-1)—含磁铁黑云斜长变粒岩(ST2203)岩相镜下特征;(a-2)—电气磁铁斜长变粒岩(ST2201)矿相显微镜下特征;(b-2)—磁铁斜长变粒岩(ST2202)矿相显微镜下特征;(c-2)—含磁铁黑云斜长变粒岩(ST2203)矿相显微镜下特征。Qtz—石英;Pl—斜长石;Tur—电气石;Bio—黑云母;Ms—白云母;Mag—磁铁矿;Sp—闪锌矿。
Fig.4 Hand specimens and microscopic characteristics of magnetite leptynite samples in Shengtieling REE deposit
| 样品 | 类型 | wB/% | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| SiO2 | Al2O3 | CaO | La2O3 | Ce2O3 | Pr2O3 | Nd2O3 | Sm2O3 | Gd2O3 | Dy2O3 | Y2O3 | ThO2 | |||
| 磁铁斜长变 粒岩ST2202 | 1 | 独居石 | 0.03 | 0.06 | 1.3 | 14.49 | 29.65 | 2.91 | 12.22 | 1.54 | 0.74 | 0.28 | 1.48 | 2.54 |
| 2 | 0.51 | — | 0.61 | 14.43 | 29.86 | 2.74 | 12.03 | 1.72 | 0.91 | 0.14 | 0.49 | 2.73 | ||
| 3 | 0.12 | — | 0.47 | 16.8 | 32.93 | 3.4 | 12.2 | 1.53 | 0.76 | 0.04 | 0.43 | 0.41 | ||
| 4 | 0.56 | 0.04 | 0.33 | 15.45 | 31.2 | 2.32 | 13.32 | 1.83 | 1.09 | 0.13 | 0.27 | 1.99 | ||
| 含磁铁黑云斜长 变粒岩ST2203 | 3 | 独居石 | 0.6 | 0.4 | 0.54 | 17.68 | 32.22 | 3.03 | 11.14 | 1.01 | 0.43 | 0.05 | 0.33 | 0.07 |
| 4 | 0.91 | 0.56 | 0.4 | 17.53 | 34.26 | 3.1 | 10.72 | 0.86 | 0.31 | — | 0.12 | 0.05 | ||
| 11 | 0.46 | 0.16 | 0.82 | 16.44 | 33.27 | 3.01 | 10.7 | 1.37 | 0.63 | 0.17 | 0.66 | 0.49 | ||
| 14 | 0.28 | 0.08 | 0.83 | 17.66 | 33.44 | 2.98 | 11.22 | 0.99 | 0.5 | 0.08 | 0.24 | 0.05 | ||
| 7 | 磷钇矿 | 1.27 | 0.22 | 0.15 | — | 0.01 | — | 0.18 | 0.37 | 4.61 | 4.85 | 35.97 | 0.31 | |
| 样品 | 类型 | wB/% | ||||||||||||
| P2O5 | UO2 | Eu2O3 | Tb2O3 | Ho2O3 | Yb2O3 | Lu2O3 | F | TiO2 | Nb2O5 | Ta2O5 | Total | |||
| 磁铁斜长变 粒岩ST2202 | 1 | 独居石 | 29.93 | 0.48 | 0.15 | 0.06 | 0.01 | 0.21 | — | 0.87 | — | 0.02 | 0.04 | 98.92 |
| 2 | 25.87 | 0.24 | 0.03 | — | 0.05 | — | 0.12 | 0.83 | 0.15 | — | — | 94.11 | ||
| 3 | 29.82 | 0.13 | 0.13 | 0.2 | 0.08 | — | — | 1.13 | — | — | — | 100.14 | ||
| 4 | 28.42 | 0.14 | 0.13 | 0.06 | ND | 0.04 | 0.09 | 1.05 | — | — | — | 98.3 | ||
| 含磁铁黑云斜长 变粒岩ST2203 | 3 | 独居石 | 29.15 | 0.1 | 0.03 | — | 0.02 | 0.26 | 0.15 | 0.95 | 0.85 | — | 0.04 | 99.27 |
| 4 | 28.31 | 0.06 | — | — | 0.13 | — | — | 1.07 | 0.24 | — | — | 98.69 | ||
| 11 | 28.08 | 0.09 | 0.09 | 0.06 | — | 0.18 | 0.38 | 1.05 | — | 0.04 | — | 98 | ||
| 14 | 29.18 | — | — | — | 0.11 | — | — | 0.92 | — | — | — | 98.81 | ||
| 7 | 磷钇矿 | 33.41 | 0.15 | 1.55 | 1.09 | 0.25 | 5.77 | 1.64 | — | — | 0.06 | 0.78 | 95.79 | |
表1 生铁岭稀土矿床磁铁变粒岩样品的独居石和磷钇矿电子探针分析结果
Table 1 Analytical results of monazite and xenotime for the magnetite leptynite samples in Shengtieling REE deposit using EPMA
| 样品 | 类型 | wB/% | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| SiO2 | Al2O3 | CaO | La2O3 | Ce2O3 | Pr2O3 | Nd2O3 | Sm2O3 | Gd2O3 | Dy2O3 | Y2O3 | ThO2 | |||
| 磁铁斜长变 粒岩ST2202 | 1 | 独居石 | 0.03 | 0.06 | 1.3 | 14.49 | 29.65 | 2.91 | 12.22 | 1.54 | 0.74 | 0.28 | 1.48 | 2.54 |
| 2 | 0.51 | — | 0.61 | 14.43 | 29.86 | 2.74 | 12.03 | 1.72 | 0.91 | 0.14 | 0.49 | 2.73 | ||
| 3 | 0.12 | — | 0.47 | 16.8 | 32.93 | 3.4 | 12.2 | 1.53 | 0.76 | 0.04 | 0.43 | 0.41 | ||
| 4 | 0.56 | 0.04 | 0.33 | 15.45 | 31.2 | 2.32 | 13.32 | 1.83 | 1.09 | 0.13 | 0.27 | 1.99 | ||
| 含磁铁黑云斜长 变粒岩ST2203 | 3 | 独居石 | 0.6 | 0.4 | 0.54 | 17.68 | 32.22 | 3.03 | 11.14 | 1.01 | 0.43 | 0.05 | 0.33 | 0.07 |
| 4 | 0.91 | 0.56 | 0.4 | 17.53 | 34.26 | 3.1 | 10.72 | 0.86 | 0.31 | — | 0.12 | 0.05 | ||
| 11 | 0.46 | 0.16 | 0.82 | 16.44 | 33.27 | 3.01 | 10.7 | 1.37 | 0.63 | 0.17 | 0.66 | 0.49 | ||
| 14 | 0.28 | 0.08 | 0.83 | 17.66 | 33.44 | 2.98 | 11.22 | 0.99 | 0.5 | 0.08 | 0.24 | 0.05 | ||
| 7 | 磷钇矿 | 1.27 | 0.22 | 0.15 | — | 0.01 | — | 0.18 | 0.37 | 4.61 | 4.85 | 35.97 | 0.31 | |
| 样品 | 类型 | wB/% | ||||||||||||
| P2O5 | UO2 | Eu2O3 | Tb2O3 | Ho2O3 | Yb2O3 | Lu2O3 | F | TiO2 | Nb2O5 | Ta2O5 | Total | |||
| 磁铁斜长变 粒岩ST2202 | 1 | 独居石 | 29.93 | 0.48 | 0.15 | 0.06 | 0.01 | 0.21 | — | 0.87 | — | 0.02 | 0.04 | 98.92 |
| 2 | 25.87 | 0.24 | 0.03 | — | 0.05 | — | 0.12 | 0.83 | 0.15 | — | — | 94.11 | ||
| 3 | 29.82 | 0.13 | 0.13 | 0.2 | 0.08 | — | — | 1.13 | — | — | — | 100.14 | ||
| 4 | 28.42 | 0.14 | 0.13 | 0.06 | ND | 0.04 | 0.09 | 1.05 | — | — | — | 98.3 | ||
| 含磁铁黑云斜长 变粒岩ST2203 | 3 | 独居石 | 29.15 | 0.1 | 0.03 | — | 0.02 | 0.26 | 0.15 | 0.95 | 0.85 | — | 0.04 | 99.27 |
| 4 | 28.31 | 0.06 | — | — | 0.13 | — | — | 1.07 | 0.24 | — | — | 98.69 | ||
| 11 | 28.08 | 0.09 | 0.09 | 0.06 | — | 0.18 | 0.38 | 1.05 | — | 0.04 | — | 98 | ||
| 14 | 29.18 | — | — | — | 0.11 | — | — | 0.92 | — | — | — | 98.81 | ||
| 7 | 磷钇矿 | 33.41 | 0.15 | 1.55 | 1.09 | 0.25 | 5.77 | 1.64 | — | — | 0.06 | 0.78 | 95.79 | |
| 样品号 | wB/10-6 | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| La | Ce | Pr | Nd | Sm | Eu | Gd | Tb | Dy | Ho | Er | Tm | Yb | Lu | |
| 电气磁铁斜长变粒岩(ST2201) | ||||||||||||||
| ST2201-3 | 0.02 | 0.46 | 0.00 | 0.02 | 0.06 | 0.03 | 0.85 | 0.38 | 5.49 | 3.18 | 20.99 | 7.30 | 108.54 | 32.11 |
| ST2201-4 | 0.01 | 0.54 | 0.00 | 0.03 | 0.07 | 0.06 | 0.61 | 0.32 | 5.82 | 2.67 | 18.06 | 6.42 | 90.82 | 26.25 |
| ST2201-5 | 0.04 | 1.30 | 0.03 | 0.31 | 0.37 | 0.11 | 0.99 | 0.46 | 8.73 | 4.13 | 27.83 | 8.68 | 121.37 | 34.20 |
| ST2201-6 | 0.05 | 0.80 | 0.00 | 0.06 | 0.13 | 0.06 | 0.95 | 0.60 | 8.66 | 4.42 | 26.89 | 8.50 | 120.54 | 33.11 |
| ST2201-7 | 0.05 | 0.74 | 0.01 | 0.13 | 0.11 | 0.02 | 0.88 | 0.46 | 6.84 | 3.69 | 23.28 | 7.71 | 109.34 | 30.61 |
| ST2201-8 | 0.01 | 0.62 | 0.01 | 0.01 | 0.09 | 0.05 | 0.71 | 0.42 | 6.94 | 3.24 | 21.61 | 7.16 | 101.66 | 29.00 |
| ST2201-10 | 0.00 | 1.18 | 0.00 | 0.08 | 0.10 | 0.06 | 1.26 | 0.65 | 10.25 | 4.87 | 31.79 | 10.19 | 145.11 | 40.53 |
| ST2201-11 | 0.00 | 0.99 | 0.00 | 0.05 | 0.09 | 0.11 | 1.12 | 0.57 | 8.91 | 4.36 | 27.82 | 9.00 | 123.29 | 34.49 |
| ST2201-12 | 0.00 | 0.51 | 0.00 | 0.01 | 0.07 | 0.03 | 0.72 | 0.42 | 6.93 | 3.58 | 22.84 | 7.57 | 106.41 | 31.05 |
| ST2201-13 | 0.01 | 1.43 | 0.00 | 0.12 | 0.08 | 0.09 | 1.47 | 0.80 | 12.47 | 6.29 | 42.43 | 14.00 | 194.03 | 56.39 |
| ST2201-14 | 0.00 | 0.54 | 0.00 | 0.04 | 0.13 | 0.06 | 0.76 | 0.41 | 7.51 | 4.01 | 24.87 | 8.39 | 118.47 | 33.94 |
| ST2201-16 | 0.00 | 1.08 | 0.00 | 0.01 | 0.13 | 0.08 | 0.98 | 0.67 | 9.90 | 4.89 | 31.41 | 10.29 | 144.77 | 39.91 |
| ST2201-17 | 0.00 | 0.91 | 0.00 | 0.00 | 0.09 | 0.07 | 0.67 | 0.39 | 7.59 | 3.46 | 23.81 | 8.02 | 112.07 | 31.36 |
| ST2201-18 | 0.03 | 1.06 | 0.02 | 0.17 | 0.19 | 0.07 | 1.26 | 0.55 | 9.02 | 4.45 | 29.30 | 9.32 | 127.30 | 35.31 |
| ST2201-19 | 0.02 | 1.82 | 0.01 | 0.09 | 0.33 | 0.13 | 1.65 | 0.90 | 13.23 | 6.47 | 41.74 | 13.49 | 188.51 | 52.18 |
| ST2201-20 | 0.04 | 1.22 | 0.02 | 0.04 | 0.07 | 0.06 | 1.12 | 0.50 | 8.46 | 3.89 | 26.12 | 8.27 | 116.15 | 32.48 |
| ST2201-21 | 0.00 | 0.64 | 0.00 | 0.03 | 0.09 | 0.05 | 1.19 | 0.61 | 9.83 | 4.71 | 32.17 | 10.50 | 146.87 | 40.84 |
| ST2201-22 | 0.08 | 1.05 | 0.01 | 0.09 | 0.06 | 0.04 | 0.64 | 0.39 | 6.16 | 3.06 | 20.28 | 6.74 | 93.99 | 26.49 |
| ST2201-23 | 0.00 | 0.83 | 0.00 | 0.03 | 0.11 | 0.09 | 1.27 | 0.67 | 10.26 | 5.17 | 33.30 | 11.03 | 152.37 | 43.03 |
| ST2201-24 | 0.00 | 0.83 | 0.00 | 0.01 | 0.06 | 0.05 | 0.79 | 0.46 | 7.40 | 3.68 | 24.54 | 8.35 | 117.53 | 34.59 |
| ST2201-25 | 0.01 | 0.88 | 0.00 | 0.05 | 0.11 | 0.08 | 0.58 | 0.49 | 7.34 | 3.74 | 24.64 | 8.22 | 115.98 | 33.51 |
| ST2201-26 | 0.00 | 0.88 | 0.00 | 0.02 | 0.11 | 0.08 | 1.08 | 0.54 | 8.28 | 4.34 | 28.09 | 9.35 | 134.27 | 37.87 |
| ST2201-27 | 0.03 | 1.42 | 0.01 | 0.07 | 0.23 | 0.06 | 1.32 | 0.61 | 9.51 | 4.66 | 31.04 | 10.47 | 146.97 | 40.81 |
| ST2201-28 | 0.16 | 2.19 | 0.05 | 0.30 | 0.71 | 0.17 | 3.56 | 1.57 | 23.47 | 11.08 | 68.97 | 20.59 | 278.85 | 73.91 |
| ST2201-29 | 4.67 | 17.73 | 1.26 | 6.32 | 5.06 | 0.84 | 18.11 | 6.06 | 70.73 | 27.57 | 135.43 | 31.70 | 328.44 | 74.63 |
| ST2201-30 | 6.21 | 13.05 | 1.39 | 5.11 | 0.84 | 0.17 | 1.83 | 0.62 | 8.67 | 4.45 | 30.14 | 9.94 | 142.25 | 39.81 |
| ST2201-32 | 0.00 | 1.02 | 0.00 | 0.07 | 0.07 | 0.06 | 0.96 | 0.51 | 7.86 | 3.78 | 25.01 | 8.20 | 118.54 | 32.26 |
| ST2201-33 | 0.20 | 4.93 | 0.10 | 0.76 | 1.17 | 0.49 | 7.55 | 2.92 | 40.28 | 16.67 | 86.97 | 21.50 | 241.01 | 58.91 |
| ST2201-35 | 0.06 | 5.15 | 0.07 | 0.74 | 1.47 | 0.21 | 12.14 | 4.46 | 55.37 | 21.46 | 102.90 | 22.54 | 236.16 | 53.54 |
| ST2201-36 | 0.12 | 1.78 | 0.06 | 0.23 | 0.38 | 0.14 | 1.50 | 0.63 | 10.42 | 4.98 | 31.05 | 10.06 | 142.69 | 40.00 |
| ST2201-39 | 0.45 | 2.20 | 0.11 | 0.49 | 0.15 | 0.10 | 1.10 | 0.72 | 12.14 | 6.29 | 44.01 | 14.82 | 208.84 | 59.39 |
| ST2201-40 | 0.00 | 0.93 | 0.01 | 0.02 | 0.08 | 0.04 | 0.70 | 0.37 | 8.05 | 3.84 | 25.61 | 8.55 | 116.00 | 32.17 |
| 磁铁斜长变粒岩(ST2202) | ||||||||||||||
| ST2202-1 | 0.01 | 4.77 | 0.02 | 0.09 | 0.25 | 0.14 | 2.09 | 1.14 | 18.97 | 10.33 | 74.39 | 26.05 | 366.42 | 104.41 |
| ST2202-2 | 0.00 | 0.27 | 0.00 | 0.05 | 0.08 | 0.07 | 1.04 | 0.54 | 9.92 | 5.21 | 35.07 | 11.72 | 162.71 | 44.79 |
| ST2202-3 | 64.69 | 186.91 | 16.93 | 72.84 | 18.33 | 2.67 | 38.03 | 11.67 | 133.02 | 51.16 | 257.55 | 63.23 | 674.83 | 155.44 |
| ST2202-5 | 0.08 | 4.75 | 0.02 | 0.30 | 0.42 | 0.19 | 2.40 | 0.88 | 12.77 | 5.75 | 36.56 | 11.81 | 167.77 | 48.42 |
| ST2202-6 | 4.13 | 173.98 | 1.00 | 4.10 | 1.77 | 0.57 | 10.21 | 3.88 | 52.94 | 23.66 | 134.41 | 37.50 | 449.41 | 110.92 |
| ST2202-7 | 0.00 | 0.29 | 0.00 | 0.05 | 0.23 | 0.11 | 1.57 | 0.95 | 16.35 | 8.33 | 52.90 | 16.98 | 228.17 | 61.59 |
| ST2202-8 | 0.00 | 0.31 | 0.00 | 0.08 | 0.34 | 0.25 | 3.96 | 2.41 | 41.51 | 19.83 | 126.08 | 38.32 | 497.32 | 128.21 |
| ST2202-10 | 0.16 | 17.69 | 0.38 | 5.75 | 9.09 | 0.52 | 42.53 | 12.91 | 148.14 | 56.37 | 248.17 | 50.74 | 463.92 | 98.38 |
| ST2202-11 | 0.02 | 8.39 | 0.26 | 3.92 | 8.60 | 1.31 | 46.98 | 15.75 | 185.49 | 68.80 | 293.80 | 57.39 | 499.19 | 97.14 |
| ST2202-13 | 0.01 | 0.33 | 0.00 | 0.09 | 0.31 | 0.13 | 2.65 | 1.40 | 20.38 | 10.13 | 72.60 | 25.31 | 389.71 | 113.38 |
| ST2202-14 | 1.87 | 102.44 | 0.55 | 2.21 | 2.23 | 0.96 | 13.94 | 5.62 | 74.62 | 30.08 | 159.63 | 42.08 | 489.88 | 122.29 |
| ST2202-15 | 3.65 | 63.23 | 0.96 | 4.27 | 4.20 | 0.94 | 18.85 | 7.03 | 93.83 | 35.88 | 169.98 | 38.41 | 381.59 | 82.44 |
| ST2202-16 | 0.00 | 0.35 | 0.00 | 0.00 | 0.15 | 0.08 | 1.25 | 0.54 | 9.18 | 4.10 | 26.64 | 8.87 | 131.66 | 38.66 |
| ST2202-17 | 12.68 | 102.09 | 2.83 | 11.64 | 4.36 | 1.25 | 18.06 | 7.17 | 98.29 | 39.13 | 198.33 | 50.71 | 563.07 | 129.61 |
| ST2202-18 | 0.01 | 0.42 | 0.02 | 0.23 | 0.35 | 0.19 | 2.42 | 1.15 | 16.42 | 7.92 | 47.90 | 14.70 | 195.10 | 53.35 |
| ST2202-19 | 0.00 | 0.33 | 0.00 | 0.03 | 0.21 | 0.09 | 2.12 | 1.23 | 19.95 | 10.21 | 66.86 | 21.24 | 288.25 | 80.00 |
| ST2202-20 | 0.00 | 0.49 | 0.00 | 0.03 | 0.14 | 0.10 | 1.43 | 0.80 | 10.88 | 4.89 | 34.53 | 11.55 | 165.24 | 48.76 |
| ST2202-21 | 1.24 | 27.24 | 0.46 | 3.21 | 2.98 | 0.62 | 13.29 | 4.73 | 61.35 | 25.34 | 124.89 | 29.94 | 307.56 | 70.11 |
| ST2202-22 | 0.00 | 0.42 | 0.00 | 0.04 | 0.18 | 0.08 | 1.15 | 0.58 | 9.22 | 4.52 | 28.84 | 10.16 | 147.75 | 43.55 |
| ST2202-23 | 0.01 | 0.77 | 0.02 | 0.31 | 0.61 | 0.22 | 3.99 | 1.81 | 24.40 | 11.43 | 67.77 | 21.24 | 284.77 | 79.27 |
| ST2202-24 | 0.01 | 8.55 | 0.15 | 2.17 | 3.50 | 0.30 | 17.71 | 5.82 | 71.76 | 28.30 | 131.94 | 28.06 | 263.87 | 55.71 |
| ST2202-25 | 40.25 | 271.29 | 8.79 | 32.88 | 6.54 | 1.25 | 13.75 | 4.33 | 57.68 | 25.95 | 137.27 | 34.95 | 379.19 | 87.92 |
| ST2202-26 | 0.00 | 0.36 | 0.00 | 0.03 | 0.17 | 0.10 | 1.85 | 1.06 | 17.37 | 8.97 | 60.12 | 19.62 | 263.15 | 73.90 |
| ST2202-27 | 0.01 | 0.47 | 0.00 | 0.07 | 0.24 | 0.13 | 4.82 | 2.52 | 35.81 | 16.17 | 87.04 | 23.12 | 255.82 | 62.52 |
| ST2202-28 | 0.03 | 8.51 | 0.06 | 1.53 | 3.19 | 0.52 | 16.58 | 5.75 | 71.46 | 31.25 | 151.79 | 34.36 | 335.48 | 74.79 |
| ST2202-29 | 1.82 | 38.57 | 0.65 | 4.84 | 5.07 | 0.95 | 24.60 | 8.40 | 105.96 | 41.69 | 200.08 | 45.71 | 464.37 | 105.10 |
| ST2202-30 | 0.02 | 4.87 | 0.01 | 0.05 | 0.11 | 0.08 | 1.49 | 0.76 | 11.60 | 6.27 | 41.12 | 13.84 | 202.57 | 58.84 |
| ST2202-31 | 0.00 | 0.41 | 0.00 | 0.03 | 0.36 | 0.19 | 3.02 | 1.67 | 27.74 | 14.46 | 99.42 | 34.01 | 476.89 | 134.72 |
| ST2202-32 | 0.01 | 0.29 | 0.00 | 0.03 | 0.08 | 0.04 | 0.84 | 0.46 | 7.69 | 3.82 | 27.44 | 9.70 | 145.03 | 43.30 |
| ST2202-34 | 0.00 | 0.23 | 0.00 | 0.04 | 0.60 | 0.39 | 9.15 | 4.86 | 67.41 | 25.64 | 116.23 | 25.86 | 248.10 | 50.23 |
| ST2202-35 | 0.00 | 0.21 | 0.00 | 0.01 | 0.05 | 0.07 | 0.57 | 0.40 | 6.52 | 3.70 | 22.41 | 7.97 | 115.73 | 33.76 |
| ST2202-36 | 0.00 | 0.45 | 0.00 | 0.03 | 0.16 | 0.09 | 1.22 | 0.61 | 9.64 | 5.02 | 33.82 | 11.98 | 182.04 | 55.84 |
| ST2202-38 | 0.02 | 0.42 | 0.07 | 0.58 | 1.56 | 0.62 | 9.95 | 5.39 | 90.22 | 43.66 | 245.99 | 69.51 | 781.50 | 178.95 |
| ST2202-39 | 0.01 | 0.53 | 0.02 | 0.14 | 0.38 | 0.24 | 3.52 | 1.59 | 23.25 | 10.97 | 68.99 | 21.66 | 304.96 | 87.16 |
| ST2202-40 | 0.06 | 13.48 | 0.02 | 0.09 | 0.32 | 0.09 | 1.88 | 1.03 | 16.10 | 8.68 | 62.22 | 22.34 | 322.44 | 91.75 |
表2 生铁岭稀土矿床磁铁变粒岩锆石稀土元素分析结果
Table 2 Zircon REE data for magnetite leptynite samples in Shengtieling REE deposit
| 样品号 | wB/10-6 | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| La | Ce | Pr | Nd | Sm | Eu | Gd | Tb | Dy | Ho | Er | Tm | Yb | Lu | |
| 电气磁铁斜长变粒岩(ST2201) | ||||||||||||||
| ST2201-3 | 0.02 | 0.46 | 0.00 | 0.02 | 0.06 | 0.03 | 0.85 | 0.38 | 5.49 | 3.18 | 20.99 | 7.30 | 108.54 | 32.11 |
| ST2201-4 | 0.01 | 0.54 | 0.00 | 0.03 | 0.07 | 0.06 | 0.61 | 0.32 | 5.82 | 2.67 | 18.06 | 6.42 | 90.82 | 26.25 |
| ST2201-5 | 0.04 | 1.30 | 0.03 | 0.31 | 0.37 | 0.11 | 0.99 | 0.46 | 8.73 | 4.13 | 27.83 | 8.68 | 121.37 | 34.20 |
| ST2201-6 | 0.05 | 0.80 | 0.00 | 0.06 | 0.13 | 0.06 | 0.95 | 0.60 | 8.66 | 4.42 | 26.89 | 8.50 | 120.54 | 33.11 |
| ST2201-7 | 0.05 | 0.74 | 0.01 | 0.13 | 0.11 | 0.02 | 0.88 | 0.46 | 6.84 | 3.69 | 23.28 | 7.71 | 109.34 | 30.61 |
| ST2201-8 | 0.01 | 0.62 | 0.01 | 0.01 | 0.09 | 0.05 | 0.71 | 0.42 | 6.94 | 3.24 | 21.61 | 7.16 | 101.66 | 29.00 |
| ST2201-10 | 0.00 | 1.18 | 0.00 | 0.08 | 0.10 | 0.06 | 1.26 | 0.65 | 10.25 | 4.87 | 31.79 | 10.19 | 145.11 | 40.53 |
| ST2201-11 | 0.00 | 0.99 | 0.00 | 0.05 | 0.09 | 0.11 | 1.12 | 0.57 | 8.91 | 4.36 | 27.82 | 9.00 | 123.29 | 34.49 |
| ST2201-12 | 0.00 | 0.51 | 0.00 | 0.01 | 0.07 | 0.03 | 0.72 | 0.42 | 6.93 | 3.58 | 22.84 | 7.57 | 106.41 | 31.05 |
| ST2201-13 | 0.01 | 1.43 | 0.00 | 0.12 | 0.08 | 0.09 | 1.47 | 0.80 | 12.47 | 6.29 | 42.43 | 14.00 | 194.03 | 56.39 |
| ST2201-14 | 0.00 | 0.54 | 0.00 | 0.04 | 0.13 | 0.06 | 0.76 | 0.41 | 7.51 | 4.01 | 24.87 | 8.39 | 118.47 | 33.94 |
| ST2201-16 | 0.00 | 1.08 | 0.00 | 0.01 | 0.13 | 0.08 | 0.98 | 0.67 | 9.90 | 4.89 | 31.41 | 10.29 | 144.77 | 39.91 |
| ST2201-17 | 0.00 | 0.91 | 0.00 | 0.00 | 0.09 | 0.07 | 0.67 | 0.39 | 7.59 | 3.46 | 23.81 | 8.02 | 112.07 | 31.36 |
| ST2201-18 | 0.03 | 1.06 | 0.02 | 0.17 | 0.19 | 0.07 | 1.26 | 0.55 | 9.02 | 4.45 | 29.30 | 9.32 | 127.30 | 35.31 |
| ST2201-19 | 0.02 | 1.82 | 0.01 | 0.09 | 0.33 | 0.13 | 1.65 | 0.90 | 13.23 | 6.47 | 41.74 | 13.49 | 188.51 | 52.18 |
| ST2201-20 | 0.04 | 1.22 | 0.02 | 0.04 | 0.07 | 0.06 | 1.12 | 0.50 | 8.46 | 3.89 | 26.12 | 8.27 | 116.15 | 32.48 |
| ST2201-21 | 0.00 | 0.64 | 0.00 | 0.03 | 0.09 | 0.05 | 1.19 | 0.61 | 9.83 | 4.71 | 32.17 | 10.50 | 146.87 | 40.84 |
| ST2201-22 | 0.08 | 1.05 | 0.01 | 0.09 | 0.06 | 0.04 | 0.64 | 0.39 | 6.16 | 3.06 | 20.28 | 6.74 | 93.99 | 26.49 |
| ST2201-23 | 0.00 | 0.83 | 0.00 | 0.03 | 0.11 | 0.09 | 1.27 | 0.67 | 10.26 | 5.17 | 33.30 | 11.03 | 152.37 | 43.03 |
| ST2201-24 | 0.00 | 0.83 | 0.00 | 0.01 | 0.06 | 0.05 | 0.79 | 0.46 | 7.40 | 3.68 | 24.54 | 8.35 | 117.53 | 34.59 |
| ST2201-25 | 0.01 | 0.88 | 0.00 | 0.05 | 0.11 | 0.08 | 0.58 | 0.49 | 7.34 | 3.74 | 24.64 | 8.22 | 115.98 | 33.51 |
| ST2201-26 | 0.00 | 0.88 | 0.00 | 0.02 | 0.11 | 0.08 | 1.08 | 0.54 | 8.28 | 4.34 | 28.09 | 9.35 | 134.27 | 37.87 |
| ST2201-27 | 0.03 | 1.42 | 0.01 | 0.07 | 0.23 | 0.06 | 1.32 | 0.61 | 9.51 | 4.66 | 31.04 | 10.47 | 146.97 | 40.81 |
| ST2201-28 | 0.16 | 2.19 | 0.05 | 0.30 | 0.71 | 0.17 | 3.56 | 1.57 | 23.47 | 11.08 | 68.97 | 20.59 | 278.85 | 73.91 |
| ST2201-29 | 4.67 | 17.73 | 1.26 | 6.32 | 5.06 | 0.84 | 18.11 | 6.06 | 70.73 | 27.57 | 135.43 | 31.70 | 328.44 | 74.63 |
| ST2201-30 | 6.21 | 13.05 | 1.39 | 5.11 | 0.84 | 0.17 | 1.83 | 0.62 | 8.67 | 4.45 | 30.14 | 9.94 | 142.25 | 39.81 |
| ST2201-32 | 0.00 | 1.02 | 0.00 | 0.07 | 0.07 | 0.06 | 0.96 | 0.51 | 7.86 | 3.78 | 25.01 | 8.20 | 118.54 | 32.26 |
| ST2201-33 | 0.20 | 4.93 | 0.10 | 0.76 | 1.17 | 0.49 | 7.55 | 2.92 | 40.28 | 16.67 | 86.97 | 21.50 | 241.01 | 58.91 |
| ST2201-35 | 0.06 | 5.15 | 0.07 | 0.74 | 1.47 | 0.21 | 12.14 | 4.46 | 55.37 | 21.46 | 102.90 | 22.54 | 236.16 | 53.54 |
| ST2201-36 | 0.12 | 1.78 | 0.06 | 0.23 | 0.38 | 0.14 | 1.50 | 0.63 | 10.42 | 4.98 | 31.05 | 10.06 | 142.69 | 40.00 |
| ST2201-39 | 0.45 | 2.20 | 0.11 | 0.49 | 0.15 | 0.10 | 1.10 | 0.72 | 12.14 | 6.29 | 44.01 | 14.82 | 208.84 | 59.39 |
| ST2201-40 | 0.00 | 0.93 | 0.01 | 0.02 | 0.08 | 0.04 | 0.70 | 0.37 | 8.05 | 3.84 | 25.61 | 8.55 | 116.00 | 32.17 |
| 磁铁斜长变粒岩(ST2202) | ||||||||||||||
| ST2202-1 | 0.01 | 4.77 | 0.02 | 0.09 | 0.25 | 0.14 | 2.09 | 1.14 | 18.97 | 10.33 | 74.39 | 26.05 | 366.42 | 104.41 |
| ST2202-2 | 0.00 | 0.27 | 0.00 | 0.05 | 0.08 | 0.07 | 1.04 | 0.54 | 9.92 | 5.21 | 35.07 | 11.72 | 162.71 | 44.79 |
| ST2202-3 | 64.69 | 186.91 | 16.93 | 72.84 | 18.33 | 2.67 | 38.03 | 11.67 | 133.02 | 51.16 | 257.55 | 63.23 | 674.83 | 155.44 |
| ST2202-5 | 0.08 | 4.75 | 0.02 | 0.30 | 0.42 | 0.19 | 2.40 | 0.88 | 12.77 | 5.75 | 36.56 | 11.81 | 167.77 | 48.42 |
| ST2202-6 | 4.13 | 173.98 | 1.00 | 4.10 | 1.77 | 0.57 | 10.21 | 3.88 | 52.94 | 23.66 | 134.41 | 37.50 | 449.41 | 110.92 |
| ST2202-7 | 0.00 | 0.29 | 0.00 | 0.05 | 0.23 | 0.11 | 1.57 | 0.95 | 16.35 | 8.33 | 52.90 | 16.98 | 228.17 | 61.59 |
| ST2202-8 | 0.00 | 0.31 | 0.00 | 0.08 | 0.34 | 0.25 | 3.96 | 2.41 | 41.51 | 19.83 | 126.08 | 38.32 | 497.32 | 128.21 |
| ST2202-10 | 0.16 | 17.69 | 0.38 | 5.75 | 9.09 | 0.52 | 42.53 | 12.91 | 148.14 | 56.37 | 248.17 | 50.74 | 463.92 | 98.38 |
| ST2202-11 | 0.02 | 8.39 | 0.26 | 3.92 | 8.60 | 1.31 | 46.98 | 15.75 | 185.49 | 68.80 | 293.80 | 57.39 | 499.19 | 97.14 |
| ST2202-13 | 0.01 | 0.33 | 0.00 | 0.09 | 0.31 | 0.13 | 2.65 | 1.40 | 20.38 | 10.13 | 72.60 | 25.31 | 389.71 | 113.38 |
| ST2202-14 | 1.87 | 102.44 | 0.55 | 2.21 | 2.23 | 0.96 | 13.94 | 5.62 | 74.62 | 30.08 | 159.63 | 42.08 | 489.88 | 122.29 |
| ST2202-15 | 3.65 | 63.23 | 0.96 | 4.27 | 4.20 | 0.94 | 18.85 | 7.03 | 93.83 | 35.88 | 169.98 | 38.41 | 381.59 | 82.44 |
| ST2202-16 | 0.00 | 0.35 | 0.00 | 0.00 | 0.15 | 0.08 | 1.25 | 0.54 | 9.18 | 4.10 | 26.64 | 8.87 | 131.66 | 38.66 |
| ST2202-17 | 12.68 | 102.09 | 2.83 | 11.64 | 4.36 | 1.25 | 18.06 | 7.17 | 98.29 | 39.13 | 198.33 | 50.71 | 563.07 | 129.61 |
| ST2202-18 | 0.01 | 0.42 | 0.02 | 0.23 | 0.35 | 0.19 | 2.42 | 1.15 | 16.42 | 7.92 | 47.90 | 14.70 | 195.10 | 53.35 |
| ST2202-19 | 0.00 | 0.33 | 0.00 | 0.03 | 0.21 | 0.09 | 2.12 | 1.23 | 19.95 | 10.21 | 66.86 | 21.24 | 288.25 | 80.00 |
| ST2202-20 | 0.00 | 0.49 | 0.00 | 0.03 | 0.14 | 0.10 | 1.43 | 0.80 | 10.88 | 4.89 | 34.53 | 11.55 | 165.24 | 48.76 |
| ST2202-21 | 1.24 | 27.24 | 0.46 | 3.21 | 2.98 | 0.62 | 13.29 | 4.73 | 61.35 | 25.34 | 124.89 | 29.94 | 307.56 | 70.11 |
| ST2202-22 | 0.00 | 0.42 | 0.00 | 0.04 | 0.18 | 0.08 | 1.15 | 0.58 | 9.22 | 4.52 | 28.84 | 10.16 | 147.75 | 43.55 |
| ST2202-23 | 0.01 | 0.77 | 0.02 | 0.31 | 0.61 | 0.22 | 3.99 | 1.81 | 24.40 | 11.43 | 67.77 | 21.24 | 284.77 | 79.27 |
| ST2202-24 | 0.01 | 8.55 | 0.15 | 2.17 | 3.50 | 0.30 | 17.71 | 5.82 | 71.76 | 28.30 | 131.94 | 28.06 | 263.87 | 55.71 |
| ST2202-25 | 40.25 | 271.29 | 8.79 | 32.88 | 6.54 | 1.25 | 13.75 | 4.33 | 57.68 | 25.95 | 137.27 | 34.95 | 379.19 | 87.92 |
| ST2202-26 | 0.00 | 0.36 | 0.00 | 0.03 | 0.17 | 0.10 | 1.85 | 1.06 | 17.37 | 8.97 | 60.12 | 19.62 | 263.15 | 73.90 |
| ST2202-27 | 0.01 | 0.47 | 0.00 | 0.07 | 0.24 | 0.13 | 4.82 | 2.52 | 35.81 | 16.17 | 87.04 | 23.12 | 255.82 | 62.52 |
| ST2202-28 | 0.03 | 8.51 | 0.06 | 1.53 | 3.19 | 0.52 | 16.58 | 5.75 | 71.46 | 31.25 | 151.79 | 34.36 | 335.48 | 74.79 |
| ST2202-29 | 1.82 | 38.57 | 0.65 | 4.84 | 5.07 | 0.95 | 24.60 | 8.40 | 105.96 | 41.69 | 200.08 | 45.71 | 464.37 | 105.10 |
| ST2202-30 | 0.02 | 4.87 | 0.01 | 0.05 | 0.11 | 0.08 | 1.49 | 0.76 | 11.60 | 6.27 | 41.12 | 13.84 | 202.57 | 58.84 |
| ST2202-31 | 0.00 | 0.41 | 0.00 | 0.03 | 0.36 | 0.19 | 3.02 | 1.67 | 27.74 | 14.46 | 99.42 | 34.01 | 476.89 | 134.72 |
| ST2202-32 | 0.01 | 0.29 | 0.00 | 0.03 | 0.08 | 0.04 | 0.84 | 0.46 | 7.69 | 3.82 | 27.44 | 9.70 | 145.03 | 43.30 |
| ST2202-34 | 0.00 | 0.23 | 0.00 | 0.04 | 0.60 | 0.39 | 9.15 | 4.86 | 67.41 | 25.64 | 116.23 | 25.86 | 248.10 | 50.23 |
| ST2202-35 | 0.00 | 0.21 | 0.00 | 0.01 | 0.05 | 0.07 | 0.57 | 0.40 | 6.52 | 3.70 | 22.41 | 7.97 | 115.73 | 33.76 |
| ST2202-36 | 0.00 | 0.45 | 0.00 | 0.03 | 0.16 | 0.09 | 1.22 | 0.61 | 9.64 | 5.02 | 33.82 | 11.98 | 182.04 | 55.84 |
| ST2202-38 | 0.02 | 0.42 | 0.07 | 0.58 | 1.56 | 0.62 | 9.95 | 5.39 | 90.22 | 43.66 | 245.99 | 69.51 | 781.50 | 178.95 |
| ST2202-39 | 0.01 | 0.53 | 0.02 | 0.14 | 0.38 | 0.24 | 3.52 | 1.59 | 23.25 | 10.97 | 68.99 | 21.66 | 304.96 | 87.16 |
| ST2202-40 | 0.06 | 13.48 | 0.02 | 0.09 | 0.32 | 0.09 | 1.88 | 1.03 | 16.10 | 8.68 | 62.22 | 22.34 | 322.44 | 91.75 |
| 样品号 | 类型 | 元素含量/10-6 | Th/U | 同位素比值 | 年龄/Ma | 谐和 度/% | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Th | U | 207Pb/235U | 1σ | 206Pb/238U | 1σ | 207Pb/206Pb | 1σ | 206Pb/238U | 1σ | |||||
| 电气磁铁斜长变粒岩(ST2201) | ||||||||||||||
| ST2201-3 | m | 35 | 1 060 | 0.033 | 5.390 69 | 0.108 77 | 0.337 46 | 0.003 16 | 1 881 | 37 | 1 874 | 15 | 99 | |
| ST2201-4 | m | 58 | 986 | 0.059 | 5.481 64 | 0.121 96 | 0.339 55 | 0.003 84 | 1 900 | 40 | 1 884 | 19 | 99 | |
| ST2201-5 | m | 69 | 1 005 | 0.068 | 5.628 66 | 0.134 08 | 0.346 20 | 0.004 56 | 1 913 | 42 | 1 916 | 22 | 99 | |
| ST2201-6 | m | 83 | 1 150 | 0.073 | 5.635 54 | 0.124 46 | 0.347 39 | 0.004 07 | 1 909 | 39 | 1 922 | 19 | 99 | |
| ST2201-7 | m | 60 | 869 | 0.069 | 5.758 74 | 0.118 79 | 0.357 95 | 0.003 66 | 1 894 | 37 | 1 972 | 17 | 98 | |
| ST2201-8 | m | 70 | 1 019 | 0.068 | 5.562 74 | 0.113 60 | 0.345 34 | 0.003 88 | 1 896 | 35 | 1 912 | 19 | 99 | |
| ST2201-10 | m | 80 | 1 048 | 0.077 | 5.369 08 | 0.109 64 | 0.338 97 | 0.003 96 | 1 866 | 34 | 1 882 | 19 | 99 | |
| ST2201-11 | m | 92 | 1 090 | 0.084 | 5.362 58 | 0.111 52 | 0.340 68 | 0.004 13 | 1 855 | 34 | 1 890 | 20 | 99 | |
| ST2201-12 | m | 75 | 1 235 | 0.061 | 5.419 06 | 0.118 34 | 0.342 55 | 0.004 52 | 1 865 | 35 | 1 899 | 22 | 99 | |
| ST2201-13 | m | 97 | 1 058 | 0.092 | 5.324 08 | 0.141 03 | 0.339 94 | 0.005 38 | 1 847 | 42 | 1 886 | 26 | 99 | |
| ST2201-14 | m | 72 | 1 208 | 0.06 | 5.131 34 | 0.121 34 | 0.330 94 | 0.004 71 | 1 829 | 71 | 1 843 | 23 | 99 | |
| ST2201-16 | m | 93 | 1 125 | 0.082 | 5.298 92 | 0.103 54 | 0.336 84 | 0.003 90 | 1 855 | 30 | 1 871 | 19 | 99 | |
| ST2201-17 | m | 76 | 988 | 0.077 | 5.273 08 | 0.100 00 | 0.338 58 | 0.004 24 | 1 839 | 28 | 1 880 | 20 | 99 | |
| ST2201-18 | m | 96 | 1 001 | 0.096 | 5.301 10 | 0.095 21 | 0.335 50 | 0.003 90 | 1 865 | 32 | 1 865 | 19 | 99 | |
| ST2201-19 | m | 95 | 1 132 | 0.084 | 5.401 02 | 0.087 30 | 0.341 70 | 0.002 93 | 1 865 | 29 | 1 895 | 14 | 99 | |
| ST2201-20 | m | 77 | 924 | 0.083 | 5.251 95 | 0.092 68 | 0.327 39 | 0.002 98 | 1 891 | 30 | 1 826 | 15 | 98 | |
| ST2201-21 | m | 112 | 1 522 | 0.073 | 5.453 35 | 0.092 27 | 0.344 10 | 0.003 23 | 1 869 | 29 | 1 906 | 16 | 99 | |
| ST2201-22 | m | 66 | 808 | 0.081 | 5.338 82 | 0.088 57 | 0.340 61 | 0.003 33 | 1 851 | 23 | 1 890 | 16 | 99 | |
| ST2201-23 | m | 98 | 1 353 | 0.072 | 5.351 41 | 0.096 14 | 0.337 18 | 0.003 88 | 1 872 | 27 | 1 873 | 19 | 99 | |
| ST2201-24 | m | 58 | 997 | 0.058 | 5.332 97 | 0.096 15 | 0.339 78 | 0.004 26 | 1 854 | 27 | 1 886 | 21 | 99 | |
| ST2201-25 | m | 68 | 1 088 | 0.062 | 5.302 90 | 0.096 57 | 0.336 57 | 0.004 14 | 1 861 | 28 | 1 870 | 20 | 99 | |
| ST2201-26 | m | 89 | 974 | 0.091 | 5.434 29 | 0.105 20 | 0.343 75 | 0.004 37 | 1 865 | 30 | 1 905 | 21 | 99 | |
| ST2201-27 | m | 61 | 1 016 | 0.06 | 5.228 11 | 0.101 14 | 0.332 66 | 0.003 74 | 1 854 | 31 | 1 851 | 18 | 99 | |
| ST2201-28 | m | 76 | 1 143 | 0.066 | 5.402 91 | 0.111 91 | 0.340 37 | 0.004 48 | 1 873 | 33 | 1 888 | 22 | 99 | |
| ST2201-29 | i | 301 | 754 | 0.399 | 6.587 54 | 0.159 44 | 0.376 00 | 0.005 89 | 2 047 | 34 | 2 058 | 28 | 99 | |
| ST2201-30 | m | 67 | 938 | 0.071 | 5.708 77 | 0.117 77 | 0.350 46 | 0.004 20 | 1 918 | 33 | 1 937 | 20 | 99 | |
| ST2201-32 | m | 71 | 900 | 0.079 | 5.663 63 | 0.107 14 | 0.348 71 | 0.003 67 | 1 914 | 31 | 1 928 | 18 | 99 | |
| ST2201-33 | i | 107 | 1 061 | 0.101 | 5.997 18 | 0.111 79 | 0.358 24 | 0.003 61 | 1 970 | 32 | 1 974 | 17 | 99 | |
| ST2201-35 | m | 21 | 334 | 0.061 | 5.432 81 | 0.094 95 | 0.345 74 | 0.003 88 | 1 855 | 28 | 1 914 | 19 | 98 | |
| ST2201-36 | m | 3 | 246 | 0.013 | 5.315 98 | 0.092 54 | 0.335 67 | 0.003 31 | 1 933 | 29 | 1 866 | 16 | 99 | |
| ST2201-39 | m | 59 | 1 114 | 0.053 | 5.798 61 | 0.116 83 | 0.351 87 | 0.003 44 | 1 939 | 35 | 1 944 | 16 | 99 | |
| ST2201-40 | m | 84 | 945 | 0.089 | 5.642 40 | 0.104 02 | 0.348 35 | 0.002 93 | 1 909 | 33 | 1 927 | 14 | 99 | |
| 磁铁斜长变粒岩(ST2202) | ||||||||||||||
| ST2202-1 | m | 21 | 781 | 0.026 | 5.656 81 | 0.097 35 | 0.348 71 | 0.002 71 | 1 911 | 32 | 1 928 | 13 | 99 | |
| ST2202-2 | m | 5 | 183 | 0.028 | 5.447 22 | 0.098 44 | 0.343 60 | 0.003 11 | 1 873 | 34 | 1 904 | 15 | 99 | |
| ST2202-3 | i | 653 | 655 | 0.996 | 6.778 05 | 0.123 50 | 0.378 66 | 0.004 45 | 2 085 | 32 | 2 070 | 21 | 99 | |
| ST2202-5 | m | 9 | 229 | 0.038 | 5.189 04 | 0.092 32 | 0.330 46 | 0.003 10 | 1 852 | 31 | 1 841 | 15 | 99 | |
| ST2202-6 | i | 108 | 158 | 0.679 | 6.016 82 | 0.105 85 | 0.362 00 | 0.003 44 | 1 954 | 31 | 1 992 | 16 | 99 | |
| ST2202-7 | m | 3 | 222 | 0.014 | 5.416 92 | 0.095 40 | 0.341 57 | 0.003 54 | 1 866 | 29 | 1 894 | 17 | 99 | |
| ST2202-8 | m | 2 | 192 | 0.009 | 5.134 34 | 0.099 90 | 0.327 07 | 0.003 71 | 1 846 | 33 | 1 824 | 18 | 99 | |
| ST2202-10 | i | 294 | 410 | 0.716 | 7.536 52 | 0.154 16 | 0.396 83 | 0.003 90 | 2 181 | 35 | 2 154 | 18 | 99 | |
| ST2202-11 | i | 243 | 426 | 0.571 | 7.705 38 | 0.171 78 | 0.402 59 | 0.004 22 | 2 196 | 41 | 2 181 | 19 | 98 | |
| ST2202-13 | m | 1 | 61 | 0.009 | 5.461 04 | 0.149 39 | 0.338 15 | 0.004 45 | 1 906 | 52 | 1 878 | 21 | 99 | |
| ST2202-14 | i | 98 | 390 | 0.252 | 5.805 78 | 0.140 98 | 0.349 09 | 0.005 08 | 1 947 | 40 | 1 930 | 24 | 99 | |
| ST2202-15 | i | 87 | 168 | 0.518 | 6.873 44 | 0.166 30 | 0.381 93 | 0.004 43 | 2 084 | 34 | 2 085 | 21 | 99 | |
| ST2202-16 | m | 5 | 152 | 0.030 | 5.681 72 | 0.115 03 | 0.349 95 | 0.003 45 | 1 909 | 37 | 1 934 | 16 | 99 | |
| ST2202-17 | i | 125 | 288 | 0.435 | 5.941 40 | 0.106 50 | 0.356 31 | 0.003 52 | 1 959 | 33 | 1 965 | 17 | 99 | |
| ST2202-18 | m | 9 | 307 | 0.029 | 5.607 41 | 0.102 11 | 0.352 70 | 0.003 53 | 1 873 | 33 | 1 947 | 17 | 99 | |
| ST2202-19 | m | 4 | 149 | 0.029 | 5.414 78 | 0.098 31 | 0.341 62 | 0.003 27 | 1 869 | 32 | 1 894 | 16 | 98 | |
| ST2202-20 | m | 2 | 132 | 0.014 | 5.240 14 | 0.101 67 | 0.328 54 | 0.002 99 | 1 881 | 31 | 1 831 | 15 | 99 | |
| ST2202-21 | i | 174 | 350 | 0.496 | 7.040 01 | 0.148 68 | 0.387 22 | 0.004 21 | 2 109 | 31 | 2 110 | 20 | 98 | |
| ST2202-22 | m | 5 | 172 | 0.027 | 5.402 31 | 0.096 71 | 0.338 66 | 0.003 04 | 1 885 | 31 | 1 880 | 15 | 99 | |
| ST2202-23 | m | 13 | 294 | 0.044 | 5.568 98 | 0.110 19 | 0.348 38 | 0.004 23 | 1 900 | 33 | 1 927 | 20 | 99 | |
| ST2202-24 | i | 83 | 150 | 0.551 | 7.881 21 | 0.144 59 | 0.410 23 | 0.004 45 | 2 211 | 28 | 2 216 | 20 | 99 | |
| ST2202-25 | i | 138 | 153 | 0.899 | 6.819 89 | 0.126 88 | 0.381 92 | 0.003 60 | 2 084 | 33 | 2 085 | 17 | 99 | |
| ST2202-26 | m | 4 | 151 | 0.028 | 5.460 18 | 0.112 31 | 0.334 04 | 0.003 62 | 1 928 | 30 | 1 858 | 18 | 99 | |
| ST2202-27 | m | 10 | 223 | 0.046 | 5.622 07 | 0.122 05 | 0.347 59 | 0.003 92 | 1 905 | 4 | 1 923 | 19 | 98 | |
| ST2202-28 | i | 191 | 375 | 0.510 | 7.826 98 | 0.182 48 | 0.403 18 | 0.004 93 | 2 228 | 39 | 2 184 | 23 | 99 | |
| ST2202-29 | i | 234 | 344 | 0.680 | 7.031 35 | 0.168 11 | 0.380 61 | 0.004 54 | 2 137 | 39 | 2 079 | 21 | 98 | |
| ST2202-30 | m | 12 | 401 | 0.030 | 5.365 63 | 0.105 32 | 0.335 19 | 0.003 31 | 1 887 | 35 | 1 863 | 16 | 98 | |
| ST2202-31 | m | 4 | 148 | 0.028 | 5.240 68 | 0.101 30 | 0.333 16 | 0.003 47 | 1 858 | 31 | 1 854 | 17 | 99 | |
| ST2202-32 | m | 7 | 307 | 0.021 | 5.513 68 | 0.097 98 | 0.342 79 | 0.003 17 | 1 896 | 31 | 1 900 | 15 | 99 | |
| ST2202-34 | m | 1 | 232 | 0.004 | 5.386 03 | 0.094 80 | 0.337 92 | 0.003 38 | 1 880 | 30 | 1 877 | 16 | 99 | |
| ST2202-35 | m | 20 | 324 | 0.063 | 5.447 88 | 0.097 78 | 0.344 67 | 0.003 91 | 1 865 | 30 | 1 909 | 19 | 99 | |
| ST2202-36 | m | 3 | 260 | 0.012 | 5.561 28 | 0.092 67 | 0.351 48 | 0.003 00 | 1 866 | 30 | 1 942 | 14 | 99 | |
| ST2202-38 | m | 2 | 270 | 0.007 | 5.269 65 | 0.098 58 | 0.338 51 | 0.003 31 | 1 836 | 65 | 1 880 | 16 | 98 | |
| ST2202-39 | m | 4 | 208 | 0.020 | 5.239 64 | 0.091 60 | 0.336 41 | 0.003 28 | 1 839 | 31 | 1 869 | 16 | 99 | |
| ST2202-40 | m | 15 | 181 | 0.085 | 5.392 00 | 0.112 31 | 0.339 50 | 0.003 80 | 1 873 | 34 | 1 884 | 18 | 99 | |
表3 生铁岭稀土矿床磁铁变粒岩锆石U-Pb同位素分析结果
Table 3 U-Pb isotopic analysis for the magnetite leptynite samples in Shengtieling REE deposit
| 样品号 | 类型 | 元素含量/10-6 | Th/U | 同位素比值 | 年龄/Ma | 谐和 度/% | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Th | U | 207Pb/235U | 1σ | 206Pb/238U | 1σ | 207Pb/206Pb | 1σ | 206Pb/238U | 1σ | |||||
| 电气磁铁斜长变粒岩(ST2201) | ||||||||||||||
| ST2201-3 | m | 35 | 1 060 | 0.033 | 5.390 69 | 0.108 77 | 0.337 46 | 0.003 16 | 1 881 | 37 | 1 874 | 15 | 99 | |
| ST2201-4 | m | 58 | 986 | 0.059 | 5.481 64 | 0.121 96 | 0.339 55 | 0.003 84 | 1 900 | 40 | 1 884 | 19 | 99 | |
| ST2201-5 | m | 69 | 1 005 | 0.068 | 5.628 66 | 0.134 08 | 0.346 20 | 0.004 56 | 1 913 | 42 | 1 916 | 22 | 99 | |
| ST2201-6 | m | 83 | 1 150 | 0.073 | 5.635 54 | 0.124 46 | 0.347 39 | 0.004 07 | 1 909 | 39 | 1 922 | 19 | 99 | |
| ST2201-7 | m | 60 | 869 | 0.069 | 5.758 74 | 0.118 79 | 0.357 95 | 0.003 66 | 1 894 | 37 | 1 972 | 17 | 98 | |
| ST2201-8 | m | 70 | 1 019 | 0.068 | 5.562 74 | 0.113 60 | 0.345 34 | 0.003 88 | 1 896 | 35 | 1 912 | 19 | 99 | |
| ST2201-10 | m | 80 | 1 048 | 0.077 | 5.369 08 | 0.109 64 | 0.338 97 | 0.003 96 | 1 866 | 34 | 1 882 | 19 | 99 | |
| ST2201-11 | m | 92 | 1 090 | 0.084 | 5.362 58 | 0.111 52 | 0.340 68 | 0.004 13 | 1 855 | 34 | 1 890 | 20 | 99 | |
| ST2201-12 | m | 75 | 1 235 | 0.061 | 5.419 06 | 0.118 34 | 0.342 55 | 0.004 52 | 1 865 | 35 | 1 899 | 22 | 99 | |
| ST2201-13 | m | 97 | 1 058 | 0.092 | 5.324 08 | 0.141 03 | 0.339 94 | 0.005 38 | 1 847 | 42 | 1 886 | 26 | 99 | |
| ST2201-14 | m | 72 | 1 208 | 0.06 | 5.131 34 | 0.121 34 | 0.330 94 | 0.004 71 | 1 829 | 71 | 1 843 | 23 | 99 | |
| ST2201-16 | m | 93 | 1 125 | 0.082 | 5.298 92 | 0.103 54 | 0.336 84 | 0.003 90 | 1 855 | 30 | 1 871 | 19 | 99 | |
| ST2201-17 | m | 76 | 988 | 0.077 | 5.273 08 | 0.100 00 | 0.338 58 | 0.004 24 | 1 839 | 28 | 1 880 | 20 | 99 | |
| ST2201-18 | m | 96 | 1 001 | 0.096 | 5.301 10 | 0.095 21 | 0.335 50 | 0.003 90 | 1 865 | 32 | 1 865 | 19 | 99 | |
| ST2201-19 | m | 95 | 1 132 | 0.084 | 5.401 02 | 0.087 30 | 0.341 70 | 0.002 93 | 1 865 | 29 | 1 895 | 14 | 99 | |
| ST2201-20 | m | 77 | 924 | 0.083 | 5.251 95 | 0.092 68 | 0.327 39 | 0.002 98 | 1 891 | 30 | 1 826 | 15 | 98 | |
| ST2201-21 | m | 112 | 1 522 | 0.073 | 5.453 35 | 0.092 27 | 0.344 10 | 0.003 23 | 1 869 | 29 | 1 906 | 16 | 99 | |
| ST2201-22 | m | 66 | 808 | 0.081 | 5.338 82 | 0.088 57 | 0.340 61 | 0.003 33 | 1 851 | 23 | 1 890 | 16 | 99 | |
| ST2201-23 | m | 98 | 1 353 | 0.072 | 5.351 41 | 0.096 14 | 0.337 18 | 0.003 88 | 1 872 | 27 | 1 873 | 19 | 99 | |
| ST2201-24 | m | 58 | 997 | 0.058 | 5.332 97 | 0.096 15 | 0.339 78 | 0.004 26 | 1 854 | 27 | 1 886 | 21 | 99 | |
| ST2201-25 | m | 68 | 1 088 | 0.062 | 5.302 90 | 0.096 57 | 0.336 57 | 0.004 14 | 1 861 | 28 | 1 870 | 20 | 99 | |
| ST2201-26 | m | 89 | 974 | 0.091 | 5.434 29 | 0.105 20 | 0.343 75 | 0.004 37 | 1 865 | 30 | 1 905 | 21 | 99 | |
| ST2201-27 | m | 61 | 1 016 | 0.06 | 5.228 11 | 0.101 14 | 0.332 66 | 0.003 74 | 1 854 | 31 | 1 851 | 18 | 99 | |
| ST2201-28 | m | 76 | 1 143 | 0.066 | 5.402 91 | 0.111 91 | 0.340 37 | 0.004 48 | 1 873 | 33 | 1 888 | 22 | 99 | |
| ST2201-29 | i | 301 | 754 | 0.399 | 6.587 54 | 0.159 44 | 0.376 00 | 0.005 89 | 2 047 | 34 | 2 058 | 28 | 99 | |
| ST2201-30 | m | 67 | 938 | 0.071 | 5.708 77 | 0.117 77 | 0.350 46 | 0.004 20 | 1 918 | 33 | 1 937 | 20 | 99 | |
| ST2201-32 | m | 71 | 900 | 0.079 | 5.663 63 | 0.107 14 | 0.348 71 | 0.003 67 | 1 914 | 31 | 1 928 | 18 | 99 | |
| ST2201-33 | i | 107 | 1 061 | 0.101 | 5.997 18 | 0.111 79 | 0.358 24 | 0.003 61 | 1 970 | 32 | 1 974 | 17 | 99 | |
| ST2201-35 | m | 21 | 334 | 0.061 | 5.432 81 | 0.094 95 | 0.345 74 | 0.003 88 | 1 855 | 28 | 1 914 | 19 | 98 | |
| ST2201-36 | m | 3 | 246 | 0.013 | 5.315 98 | 0.092 54 | 0.335 67 | 0.003 31 | 1 933 | 29 | 1 866 | 16 | 99 | |
| ST2201-39 | m | 59 | 1 114 | 0.053 | 5.798 61 | 0.116 83 | 0.351 87 | 0.003 44 | 1 939 | 35 | 1 944 | 16 | 99 | |
| ST2201-40 | m | 84 | 945 | 0.089 | 5.642 40 | 0.104 02 | 0.348 35 | 0.002 93 | 1 909 | 33 | 1 927 | 14 | 99 | |
| 磁铁斜长变粒岩(ST2202) | ||||||||||||||
| ST2202-1 | m | 21 | 781 | 0.026 | 5.656 81 | 0.097 35 | 0.348 71 | 0.002 71 | 1 911 | 32 | 1 928 | 13 | 99 | |
| ST2202-2 | m | 5 | 183 | 0.028 | 5.447 22 | 0.098 44 | 0.343 60 | 0.003 11 | 1 873 | 34 | 1 904 | 15 | 99 | |
| ST2202-3 | i | 653 | 655 | 0.996 | 6.778 05 | 0.123 50 | 0.378 66 | 0.004 45 | 2 085 | 32 | 2 070 | 21 | 99 | |
| ST2202-5 | m | 9 | 229 | 0.038 | 5.189 04 | 0.092 32 | 0.330 46 | 0.003 10 | 1 852 | 31 | 1 841 | 15 | 99 | |
| ST2202-6 | i | 108 | 158 | 0.679 | 6.016 82 | 0.105 85 | 0.362 00 | 0.003 44 | 1 954 | 31 | 1 992 | 16 | 99 | |
| ST2202-7 | m | 3 | 222 | 0.014 | 5.416 92 | 0.095 40 | 0.341 57 | 0.003 54 | 1 866 | 29 | 1 894 | 17 | 99 | |
| ST2202-8 | m | 2 | 192 | 0.009 | 5.134 34 | 0.099 90 | 0.327 07 | 0.003 71 | 1 846 | 33 | 1 824 | 18 | 99 | |
| ST2202-10 | i | 294 | 410 | 0.716 | 7.536 52 | 0.154 16 | 0.396 83 | 0.003 90 | 2 181 | 35 | 2 154 | 18 | 99 | |
| ST2202-11 | i | 243 | 426 | 0.571 | 7.705 38 | 0.171 78 | 0.402 59 | 0.004 22 | 2 196 | 41 | 2 181 | 19 | 98 | |
| ST2202-13 | m | 1 | 61 | 0.009 | 5.461 04 | 0.149 39 | 0.338 15 | 0.004 45 | 1 906 | 52 | 1 878 | 21 | 99 | |
| ST2202-14 | i | 98 | 390 | 0.252 | 5.805 78 | 0.140 98 | 0.349 09 | 0.005 08 | 1 947 | 40 | 1 930 | 24 | 99 | |
| ST2202-15 | i | 87 | 168 | 0.518 | 6.873 44 | 0.166 30 | 0.381 93 | 0.004 43 | 2 084 | 34 | 2 085 | 21 | 99 | |
| ST2202-16 | m | 5 | 152 | 0.030 | 5.681 72 | 0.115 03 | 0.349 95 | 0.003 45 | 1 909 | 37 | 1 934 | 16 | 99 | |
| ST2202-17 | i | 125 | 288 | 0.435 | 5.941 40 | 0.106 50 | 0.356 31 | 0.003 52 | 1 959 | 33 | 1 965 | 17 | 99 | |
| ST2202-18 | m | 9 | 307 | 0.029 | 5.607 41 | 0.102 11 | 0.352 70 | 0.003 53 | 1 873 | 33 | 1 947 | 17 | 99 | |
| ST2202-19 | m | 4 | 149 | 0.029 | 5.414 78 | 0.098 31 | 0.341 62 | 0.003 27 | 1 869 | 32 | 1 894 | 16 | 98 | |
| ST2202-20 | m | 2 | 132 | 0.014 | 5.240 14 | 0.101 67 | 0.328 54 | 0.002 99 | 1 881 | 31 | 1 831 | 15 | 99 | |
| ST2202-21 | i | 174 | 350 | 0.496 | 7.040 01 | 0.148 68 | 0.387 22 | 0.004 21 | 2 109 | 31 | 2 110 | 20 | 98 | |
| ST2202-22 | m | 5 | 172 | 0.027 | 5.402 31 | 0.096 71 | 0.338 66 | 0.003 04 | 1 885 | 31 | 1 880 | 15 | 99 | |
| ST2202-23 | m | 13 | 294 | 0.044 | 5.568 98 | 0.110 19 | 0.348 38 | 0.004 23 | 1 900 | 33 | 1 927 | 20 | 99 | |
| ST2202-24 | i | 83 | 150 | 0.551 | 7.881 21 | 0.144 59 | 0.410 23 | 0.004 45 | 2 211 | 28 | 2 216 | 20 | 99 | |
| ST2202-25 | i | 138 | 153 | 0.899 | 6.819 89 | 0.126 88 | 0.381 92 | 0.003 60 | 2 084 | 33 | 2 085 | 17 | 99 | |
| ST2202-26 | m | 4 | 151 | 0.028 | 5.460 18 | 0.112 31 | 0.334 04 | 0.003 62 | 1 928 | 30 | 1 858 | 18 | 99 | |
| ST2202-27 | m | 10 | 223 | 0.046 | 5.622 07 | 0.122 05 | 0.347 59 | 0.003 92 | 1 905 | 4 | 1 923 | 19 | 98 | |
| ST2202-28 | i | 191 | 375 | 0.510 | 7.826 98 | 0.182 48 | 0.403 18 | 0.004 93 | 2 228 | 39 | 2 184 | 23 | 99 | |
| ST2202-29 | i | 234 | 344 | 0.680 | 7.031 35 | 0.168 11 | 0.380 61 | 0.004 54 | 2 137 | 39 | 2 079 | 21 | 98 | |
| ST2202-30 | m | 12 | 401 | 0.030 | 5.365 63 | 0.105 32 | 0.335 19 | 0.003 31 | 1 887 | 35 | 1 863 | 16 | 98 | |
| ST2202-31 | m | 4 | 148 | 0.028 | 5.240 68 | 0.101 30 | 0.333 16 | 0.003 47 | 1 858 | 31 | 1 854 | 17 | 99 | |
| ST2202-32 | m | 7 | 307 | 0.021 | 5.513 68 | 0.097 98 | 0.342 79 | 0.003 17 | 1 896 | 31 | 1 900 | 15 | 99 | |
| ST2202-34 | m | 1 | 232 | 0.004 | 5.386 03 | 0.094 80 | 0.337 92 | 0.003 38 | 1 880 | 30 | 1 877 | 16 | 99 | |
| ST2202-35 | m | 20 | 324 | 0.063 | 5.447 88 | 0.097 78 | 0.344 67 | 0.003 91 | 1 865 | 30 | 1 909 | 19 | 99 | |
| ST2202-36 | m | 3 | 260 | 0.012 | 5.561 28 | 0.092 67 | 0.351 48 | 0.003 00 | 1 866 | 30 | 1 942 | 14 | 99 | |
| ST2202-38 | m | 2 | 270 | 0.007 | 5.269 65 | 0.098 58 | 0.338 51 | 0.003 31 | 1 836 | 65 | 1 880 | 16 | 98 | |
| ST2202-39 | m | 4 | 208 | 0.020 | 5.239 64 | 0.091 60 | 0.336 41 | 0.003 28 | 1 839 | 31 | 1 869 | 16 | 99 | |
| ST2202-40 | m | 15 | 181 | 0.085 | 5.392 00 | 0.112 31 | 0.339 50 | 0.003 80 | 1 873 | 34 | 1 884 | 18 | 99 | |
 |
表4 生铁岭稀土矿床磁铁斜长变粒岩样品的LA-ICP-MS独居石U-Th-Pb分析结果
Table 4 LA-l0P-MS monazite U-ThPb data of the magnetite plagioclase leptynite samples in Shengtieling REE deposit
| |
 |
表5 生铁岭稀土矿床磁铁斜长变粒岩独居石的LA-ICP-MS微量元素组成
Table 5 A-CP-MS trace element composition of monazite from the magnetite plagioclase leptynite samples in Shengtieling REE deposit
| |
 |
表6 生铁岭稀土矿床磁铁变粒岩主量及微量元素分析结果
Table 6 Major (%) and trace (10-6) element compositions for magnetite leptynite samples in Shengtieling REE deposit
| |
图5 生铁岭地区磁铁变粒岩样品BSE图像 (a-c)—磁铁斜长变粒岩;(d-f)—含磁铁黑云斜长变粒岩。Mnz—独居石;Xtm—磷钇矿。
Fig.5 BSE images of magnetite leptynite samples in Shengtieling REE deposit
图6 生铁岭地区磁铁变粒岩样品代表性锆石CL图像 (a)—电气磁铁斜长变粒岩(ST2201);(b)—磁铁斜长变粒岩(ST2202)。
Fig.6 Cathodoluminescence (CL) images of representative zircons for magnetite leptynite samples in Shengtieling REE deposit
图7 生铁岭地区变粒岩样品中锆石的REE球粒陨石标准化配分模式图解、锆石U-Pb谐和图、207Pb/206Pb年龄加权平均值及年龄概率密度图 (a-c)—生铁岭地区电气磁铁斜长变粒岩中全部锆石的REE球粒陨石标准化配分模式图解、锆石U-Pb谐和图、变质锆石U-Pb谐和图及207Pb/206Pb年龄加权平均值;(d-f)—磁铁斜长变粒岩中全部锆石的REE球粒陨石标准化配分模式图解、岩浆成因碎屑锆石U-Pb谐和图及年龄概率密度图、变质锆石U-Pb谐和图及207Pb/206Pb年龄加权平均值。
Fig.7 Chondrite-normalized REE pattern diagram, zircon U-Pb concordia diagram, 207Pb/206Pb weighted mean ages and age probability density diagram of the leptynite samples in Shengtieling REE deposit
图8 生铁岭地区磁铁变粒岩样品代表性独居石的BSE图像
Fig.8 BSE images of representative monazites for magnetite leptynite samples in Shengtieling REE deposit
图9 生铁岭地区磁铁变粒岩样品独居石U-Pb谐和图及207Pb/206Pb年龄加权平均值 (a)磁铁变粒岩样品中独居石U-Pb谐和图;(b)磁铁变粒岩样品中独居石207Pb/206Pb年龄加权平均值。
Fig.9 Monazite U-Pb concordia diagrams and 207Pb/206Pb weighted mean ages of magnetite leptynite samples in Shengtieling REE deposit
图10 生铁岭地区变粒岩样品中的独居石及已发表的岩浆、热液、沉积成因独居石的REE球粒陨石标准化配分模式图解(a变质成因独居石数据来源于[51];b数据来源于[52];标准化值据文献[53]) (a)—生铁岭地区磁铁斜长变粒岩样品中独居石的稀土元素分布模式;(b)—岩浆、热液、沉积成因独居石的稀土分布模式。
Fig.10 Chondrite-normalized REE patterns of monazite from the leptynite samples in Shengtieling REE deposit and magmatic, hydrothermal and sedimentary monazite. a the data of metamorphic origin monazite comes from[51]; b data comes from [52]; standardized values from [53].
图11 生铁岭地区变粒岩样品全岩球粒陨石标准化稀土元素配分模式和原始地幔标准化微量元素蛛网图(标准化值据文献[53]) (a)电气磁铁斜长变粒岩、磁铁斜长变粒岩及含磁铁黑云斜长变粒岩样品全岩球粒陨石标准化稀土元素配分模式图;(b)电气磁铁斜长变粒岩、磁铁斜长变粒岩及含磁铁黑云斜长变粒岩样品原始地幔标准化微量元素蛛网图。
Fig.11 Chondrite-normalized REE patterns and primitive mantle-normalized spider diagrams for leptynite samples in Shengtieling REE deposit. Standardized values from [53].
图12 生铁岭地区及已报道的里尔峪组锆石年龄概率密度图、Th/U-年龄图,数据来源于表7 (a, b)—生铁岭地区里尔峪组变粒岩锆石年龄概率密度图及Th/U-年龄图;(c)—里尔峪组已报道岩浆锆石年龄概率密度图。
Fig.12 The probability density diagram and Th/U-age diagram of zircon ages in the Shengtieling REE deposit and the reported Lieryu Formation are from Table 7
| 地点 | 样品号 | 岩性 | 成岩年龄/Ma | 变质年龄/Ma | 数据来源 |
|---|---|---|---|---|---|
| 本溪连山关 | TWD15013 | 流纹岩 | 2 177±34 | [ | |
| TWD15056 | 流纹岩 | 2 208±12 | |||
海城 | 变质流纹岩 | 2 201±5 | [ | ||
| 酸性火山岩 | 2 179±9 | [ | |||
本溪连山关 | TWD15001 | 变质火山岩 | 2 179±20 | [ | |
| TWD15002 | 变质火山岩 | 2 127±25 | |||
| 13LJG-1 | 含电气石浅粒岩 | 2 174±10 | [ | ||
| 13LJG-19 | 斜长角闪岩 | 1 869±28 | |||
| 辽阳河栏镇 | D2092-1.2 | 长英质凝灰岩 | 2 174±8 | [ | |
| D5049-1.5 | 长英质凝灰岩 | 2 170±7 | |||
| 16SMT02-1 | 长英质凝灰岩 | 2 174±8 | |||
| 辽东宽甸 | D014 | 斜长角闪岩 | 2 053±34 | 1 861±53 | [ |
| D016 | 斜长角闪岩 | 1 845±28 | |||
| D018 | 斜长角闪岩 | 2 130±19 | 1 868±10 | ||
| D019 | 斜长角闪岩 | 2 018±59 | 1 786±19 | ||
| D1463-1 | 斜长角闪岩 | 1 847±14 | |||
| 辽东岫岩县 黄花甸—苏子沟 | FF-N1 | 透闪斜长变粒岩 | 沉积作用2 030~1 946 | [ | |
| PM004-TW2 | 电气黑云二长变粒岩 | 1 881±5 | |||
| PM004-TW3 | 黑云斜长变粒岩 | ||||
| 辽东岫岩县黄花甸 | D1002-B1 | 斜长角闪岩 | 1 995±13 | [ | |
| D4034-B1 | 斜长角闪岩 | 2 150±21 | 1 879±11 | ||
| D1048-B3 | 变粒岩 | 峰值1 936、2 082、2 178、 2 574,最年轻2 006 | 1 931±31 | ||
| D11022-B2 | 角闪黑云磁铁变粒岩 | ||||
| 辽南三家子 | SJZ04-1 | 长英质粒状岩石 | 峰值2 140 | [ | |
| SJZ10-2 | 黑云斜长片麻岩 | 峰值2 170 | |||
| SJZ15-1 | 含黑云母长英质粒状岩石 | 峰值2 150 | |||
| SJZ09-1 | 长英质片麻岩 | 1 828±12 | [ | ||
| SJZ10-4 | 黑云斜长片麻岩 | 2 135 | |||
| SJZ14-1 | 长英质片麻岩 | 峰值2 160 | |||
| SJZ17-1 | 黑云斜长片麻岩 | 峰值2 120 | |||
| SJZ18-2 | 黑云斜长片麻岩 | 1 844±23 | |||
| SJZ19-1 | 黑云斜长片麻岩 | 1 810±34 |
表7 辽东一带已发表里尔峪组锆石年龄统计
Table 7 Zircon age statistics of Lieryu Formation have been published in the Liaodong area
| 地点 | 样品号 | 岩性 | 成岩年龄/Ma | 变质年龄/Ma | 数据来源 |
|---|---|---|---|---|---|
| 本溪连山关 | TWD15013 | 流纹岩 | 2 177±34 | [ | |
| TWD15056 | 流纹岩 | 2 208±12 | |||
海城 | 变质流纹岩 | 2 201±5 | [ | ||
| 酸性火山岩 | 2 179±9 | [ | |||
本溪连山关 | TWD15001 | 变质火山岩 | 2 179±20 | [ | |
| TWD15002 | 变质火山岩 | 2 127±25 | |||
| 13LJG-1 | 含电气石浅粒岩 | 2 174±10 | [ | ||
| 13LJG-19 | 斜长角闪岩 | 1 869±28 | |||
| 辽阳河栏镇 | D2092-1.2 | 长英质凝灰岩 | 2 174±8 | [ | |
| D5049-1.5 | 长英质凝灰岩 | 2 170±7 | |||
| 16SMT02-1 | 长英质凝灰岩 | 2 174±8 | |||
| 辽东宽甸 | D014 | 斜长角闪岩 | 2 053±34 | 1 861±53 | [ |
| D016 | 斜长角闪岩 | 1 845±28 | |||
| D018 | 斜长角闪岩 | 2 130±19 | 1 868±10 | ||
| D019 | 斜长角闪岩 | 2 018±59 | 1 786±19 | ||
| D1463-1 | 斜长角闪岩 | 1 847±14 | |||
| 辽东岫岩县 黄花甸—苏子沟 | FF-N1 | 透闪斜长变粒岩 | 沉积作用2 030~1 946 | [ | |
| PM004-TW2 | 电气黑云二长变粒岩 | 1 881±5 | |||
| PM004-TW3 | 黑云斜长变粒岩 | ||||
| 辽东岫岩县黄花甸 | D1002-B1 | 斜长角闪岩 | 1 995±13 | [ | |
| D4034-B1 | 斜长角闪岩 | 2 150±21 | 1 879±11 | ||
| D1048-B3 | 变粒岩 | 峰值1 936、2 082、2 178、 2 574,最年轻2 006 | 1 931±31 | ||
| D11022-B2 | 角闪黑云磁铁变粒岩 | ||||
| 辽南三家子 | SJZ04-1 | 长英质粒状岩石 | 峰值2 140 | [ | |
| SJZ10-2 | 黑云斜长片麻岩 | 峰值2 170 | |||
| SJZ15-1 | 含黑云母长英质粒状岩石 | 峰值2 150 | |||
| SJZ09-1 | 长英质片麻岩 | 1 828±12 | [ | ||
| SJZ10-4 | 黑云斜长片麻岩 | 2 135 | |||
| SJZ14-1 | 长英质片麻岩 | 峰值2 160 | |||
| SJZ17-1 | 黑云斜长片麻岩 | 峰值2 120 | |||
| SJZ18-2 | 黑云斜长片麻岩 | 1 844±23 | |||
| SJZ19-1 | 黑云斜长片麻岩 | 1 810±34 |
图13 生铁岭地区变粒岩样品原岩恢复图解(a据文献[68];b据文献[69];c据文献[70]) (a)—log10(Fe2O3/K2O) -log10(SiO2/Al2O3)图解;(b)—(al+fm)-(c+alk)-Si图解;(c)—La/Yb-ΣREE。
Fig.13 The diagrams of source property discrimination of leptynite samples in Shengtieling REE deposit. a modified after [68]; b modified after [69]; c modified after [70].
图14 生铁岭地区磁铁变粒岩样品Th/Sc-Zr/Sc图解、La/Th-Hf图解、Th-Sc-Zr/10图解和Th-Co-Zr/10图解(a,b据文献[73];c,d据文献[72]) (a)—Th/Sc-Zr/Sc图解;(b)—La/Th-Hf图解;(c)—Th-Sc-Zr/10图解;(d)—Th-Co-Zr/10图解。A—大洋岛弧;B—大陆岛弧;C—安第斯型活动大陆边缘;D—被动大陆边缘。
Fig.14 The Th/Sc-Zr/Sc, La/Th-Hf,Th-Sc-Zr/10 and Th-Co-Zr/10 diagrams of magnetite leptynite samples in Shengtieling REE deposit. a, b modified after [73]; c,d modified after [72].
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