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川西可尔因地区伟晶岩型锂矿地球化学指标定位矿体的方法

唐文春 段威 邹林 杨贵兵 张伟 熊观

唐文春,段威,邹林,等,2022. 川西可尔因地区伟晶岩型锂矿地球化学指标定位矿体的方法[J]. 地质力学学报,28(5):765−792 doi: 10.12090/j.issn.1006-6616.20222812
引用本文: 唐文春,段威,邹林,等,2022. 川西可尔因地区伟晶岩型锂矿地球化学指标定位矿体的方法[J]. 地质力学学报,28(5):765−792 doi: 10.12090/j.issn.1006-6616.20222812
TANG W C,DUAN W,ZOU L,et al.,2022. A method for locating ore bodies by geochemical indexes of pegmatite-type lithium deposits in the Ke'eryin area, western Sichuan, China[J]. Journal of Geomechanics,28(5):765−792 doi: 10.12090/j.issn.1006-6616.20222812
Citation: TANG W C,DUAN W,ZOU L,et al.,2022. A method for locating ore bodies by geochemical indexes of pegmatite-type lithium deposits in the Ke'eryin area, western Sichuan, China[J]. Journal of Geomechanics,28(5):765−792 doi: 10.12090/j.issn.1006-6616.20222812

川西可尔因地区伟晶岩型锂矿地球化学指标定位矿体的方法

doi: 10.12090/j.issn.1006-6616.20222812
基金项目: 四川省地矿局科技计划项目(SCDKKJXM–2018002);四川省地矿局化探队自筹科研专项(HT–KY–2022–003)
详细信息
    作者简介:

    唐文春(1965—), 男,博士,教授级高级工程师,从事地质矿产勘查研究工作。E-mail:1649500727@qq.com

    通讯作者:

    段威(1988—),男,高级工程师,从事地质矿产勘查工作。E-mail:316463467@qq.com

  • 中图分类号: P618.71;P59

A method for locating ore bodies by geochemical indexes of pegmatite-type lithium deposits in the Ke'eryin area, western Sichuan, China

Funds: This research is financially supported by the Science and Technology Planning Project of the Sichuan Bureau of Geology and Minerals Resources (Grant SCDKKJXM–2018002) and Sichuan Geology and Mineral Bureau Geochemical Exploration Team Self-funded Scientific Research Special (Grant HT–KY–2022–003)
  • 摘要: 可尔因地区是松潘−甘孜成矿带的大型稀有金属矿集区之一,围绕可尔因岩体分布了大量花岗伟晶岩脉,如何在数百平方千米伟晶岩田中定位稀有金属矿脉一直是该区伟晶岩型锂稀有金属矿找矿难点之一。通过对可尔因岩体二云母花岗岩、伟晶相微斜钠长花岗岩、不同类型伟晶岩及典型矿床开展系统的岩石地球化学分析,总结了可尔因地区伟晶岩地球化学元素空间分布和变化规律,提出了寻找锂矿的特征元素指标、指示指标和品位指标等地球化学指标。特征元素指标包括Li、B、Sn、Rb、Be、Nb、Ta等元素;平面指示指标包括Cs、Tl、F、Zr、Y、ΣREE等元素及TiO2/Ta、Zr/Hf、Ta/Zr、Nb/Ta、K/Na等值;垂向指示指标包括B、U、Zr、Be、Sn、Rb、Sr、Ba、Tl、In等元素。通过特征元素指标及指示指标的值和变化规律,可辅助定位稀有金属矿化伟晶岩位置,指示矿体深部延伸情况。品位指标主要包括铝饱和指数(A/CNK、A/NK)、里特曼指数(σ)、K+Na和K/Na值等,Li品位与铝饱和度呈正相关、与碱度呈负相关,品位指标的变化趋势指示了矿体中锂的富集部位。

     

  • 图  1  可尔因地区构造位置图及区域地质矿产简图(a、b据李建康等,2006Fei et al.,2020修改;c据古城会,2014修改)

    a—可尔因地区构造位置图;b—松潘−甘孜造山带地质简图;c—可尔因地区区域地质矿产简图

    Figure  1.  Tectonic location map and regional geology and mineral resources diagram of the Ke'eryin area (a,b modified from Li et al., 2006; Fei et al.,2020; c modified from Gu, 2014)

    (a)Tectonic location map of the Ke'eryin area; (b)Geological sketchmap of the Songpan–Garze orogenic belt; (c)Regional geology and mineral resources diagram of the Ke'eryin area

    图  2  党坝锂矿床地质简图及典型剖面图

    1—第四系;2—三叠系侏倭组四段;3—三叠系侏倭组三段;4—三叠系侏倭组二段;5—三叠系侏倭组一段;6—三叠系侏倭组;7—三叠系杂谷脑组;8—白云母钠长花岗岩;9—黑云母钾长花岗岩;10—矿体及编号;11—伟晶岩;12—钻孔;13—产状a—党坝锂矿床地质简图;b—党坝锂矿床典型剖面图

    Figure  2.  Simplified geological map and typical section of the Dangba lithium deposits

    (a) Simplified geological map of the Dangba lithium deposits; (b) Typical section of the Dangba lithium deposits 1–Quaternary; 2–4th part of Triassic Zhuwo Formation; 3–3rd part of Triassic Zhuwo Formation; 4–2nd part of Triassic Zhuwo Formation; 5–1st part of Triassic Zhuwo Formation; 6–Triassic Zhuwo Formation; 7–Triassic Zagunao Formation; 8–Muscovite albite granite; 9–Biotite potassium feldspar granite; 10–Orebody and its serial number; 11–Pegmatite; 12–Drilling; 13–Occurrence

    图  3  李家沟锂矿床地质简图及典型剖面图

    1—第四系;2—三叠系侏倭组五段;3—三叠系侏倭组四段;4—三叠系侏倭组三段;5—三叠系侏倭组二段;6—三叠系侏倭组一段; 7—矿体及编号; 8—伟晶岩;9—细晶岩;10—石英脉;11—钻孔;12—产状a—李家沟锂矿床地质简图;b—李家沟锂矿床典型剖面图

    Figure  3.  Simplified geological map and typical section of the Lijiagou lithium deposits

    (a) Simplified geological map of the Lijiagou lithium deposits; (b) Typical section of the Lijiagou lithium deposits 1–Quaternary; 2–5th part of Triassic Zhuwo Formation; 3–4th part of Triassic Zhuwo Formation; 4–3rd part of Triassic Zhuwo Formation; 5–2nd part of Triassic Zhuwo Formation; 6–1st part of Triassic Zhuwo Formation; 7–Orebody and its serial number; 8–Pegmatite; 9–Haplite; 10–Quartz vein; 11–Drilling; 12–Occurrence

    图  4  可尔因地区伟晶岩野外及手标本照片

    岩石矿物代号:γρ—伟晶岩;γβm—二云母花岗岩;Bi—黑云母;Fs—长石;Mc—云母;Qtz—石英;Spd—锂辉石;Tur—电气石a—伟晶岩脉顺裂隙侵入侏倭组;b—伟晶岩脉侵入二云母花岗岩体;c—伟晶岩大脉分支脉体顺层侵入侏倭组,并被挤压呈石香肠状;d—二云母花岗岩;e—伟晶相微斜钠长花岗岩;f—(电气石)微斜长石型伟晶岩(Ⅰ类伟晶岩);g—(电气石)微斜长石钠长石型伟晶岩(Ⅱ类伟晶岩);h—(电气石)钠长石型伟晶岩(Ⅲ类伟晶岩);i—(电气石)微斜长石型伟晶岩(Ⅰ类伟晶岩)中的巨大电气石晶体;j—(电气石)微斜长石型伟晶岩(Ⅰ类伟晶岩)中的黑云母;k—矿体中的柱状锂辉石;l—锂辉石钠长石型伟晶岩(Ⅳ类伟晶岩)

    Figure  4.  Typical field and hand specimen photographs of the pegmatite in the Ke'eryin area

    (a) Pegmatite vein invaded the Zhuwo Formation along the fissures; (b) Pegmatite vein invaded the two-mica granite body; (c) Branch vein of the pegmatite main vein concordantly intruded the Zhuwo Formation,and been pressed as boudinage structures; (d) Two-mica granite; (e) Pegmatite microclinic albite granite; (f) (Tourmaline) microclinic pegmatite (Ⅰ type pegmatite); (g) (Tourmaline) microclinic albite pegmatite (Ⅱ type pegmatite); (h) (Tourmaline) albite pegmatite (Ⅲ type pegmatite); (i) (Tourmaline) giant tourmaline crystals in microclinic pegmatite (Ⅰ type pegmatite); (j) (Tourmaline) biotite in microclinic pegmatite (Ⅰtype pegmatite); (k) Columnar spodumene in ore body; (l) Spodumene albite pegmatite (Ⅳ type pegmatite) Rock and mineral code: γρ–Pegmatite; γβm–Two-mica granite; Bi–Biotite;Fs–Feldspar; Mc–Mica; Qtz–Quartz; Spd–Spodumene; Tur–Tourmaline

    图  5  可尔因花岗岩及伟晶岩显微照片(正交偏光)

    矿物代号:Ab—钠长石;Grt—石榴子石;Lpd—锂云母;Ms—白云母;Pl—斜长石;Qtz—石英;Spd—锂辉石;Tur—电气石a—白云母沿斜长石聚片双晶纹处交代;b、c—钠长石交代微斜长石使其边缘呈锯齿状;d—叶钠长石呈集合体交代早期钠长石;e—白云母呈集合体交代微斜长石使其边缘呈港湾状;f—石英交代钠长石形成蠕英结构;g—石榴石绢云母化;h—白云母沿钠长石边缘及裂纹处交代;i—呈柱粒状锂辉石;j—斜长石、石英交代使锂辉石仅存假象;k—锂辉石裂隙和边缘被云母、石英等交代;l—锂云母分布在锂辉石、长石颗粒间

    Figure  5.  Microscope photographs of the Ke'eryin granite and pegmatite using cross-polarized light

    (a) Muscovite metasomatized plagioclase along multiple twin; (b and c) Albite metasomatized microplagioclase leading to its jagged edge; (d) Cleavelandite appearing aggregate structure metasomatized inchoate albite; (e) Muscovite appearing aggregate structure metasomatized microcline leading to its embayed edge; (f) Quartz metasomatized albite forming myrmekitic texture; (g) Garnetization and sericitization; (h) Muscovite metasomatized albite along albite's edges and fissures; (i) Short columnar spodumene; (j) Plagioclase, quartz metasomatized to spodumene making it only exist pseudomorphic; (k) Fissures and edges of spodumene metasomatized by mica and quartz; (l) Lepidolite distributed among spodumene and feldspar particles Mineral code: Ab–Albite; Grt–Garnet; Lpd–Lepidolite; Ms–Muscovite; Pl–Plagioclase; Qtz–Quartz; Spd–Spodumene; Tur–Tourmaline

    图  6  可尔因花岗岩体和伟晶岩主量元素及特征值协变图

    Figure  6.  Covariance diagram of major elements and eigenvalues from the Ke'eryin granite body and pegmatite

    图  7  样品的原始地幔标准化微量元素蛛网图 (原始地幔标准值据引自McDonough,1992)

    Figure  7.  Primitive mantle-normalized trace element spidergrams (primitive mantle normalization date according to McDonough, 1992)

    图  8  可尔因花岗岩体和伟晶岩微量元素含量曲线图

    γβm—二云母花岗岩;γρ—伟晶相微斜钠长花岗岩;Ⅰ—(电气石)微斜长石型伟晶岩脉;Ⅱ—(电气石)微斜长石钠长石型伟晶岩脉;Ⅲ—(电气石)钠长石型伟晶岩脉;Ⅳ—锂辉石钠长石型伟晶岩脉;Ⅴ—细粒(锂云母)钠长石型伟晶岩脉;横坐标序号:1—5为二云母花岗岩(γβm),6—12为伟晶相花岗岩,13—19为Ⅰ类伟晶岩,20—25为Ⅱ类伟晶岩,26—33为Ⅲ类伟晶岩,34—48为Ⅳ类伟晶岩,49—52为Ⅴ类伟晶岩,对应样品分析结果见表3

    Figure  8.  Trace element content curve of the Ke’eryin granite and pegmatite

    γβm–Two-mica granite; γρ–Pegmatite microclinic albite granite; Ⅰ–(tourmaline) microclinic pegmatite vein; Ⅱ–(tourmaline) microclinic albite pegmatite vein; Ⅲ–(tourmaline) albite pegmatite vein; Ⅳ–spodumenealbite pegmatite vein; Ⅴ–fine-grained(lepidolite)albite pegmatite vein Abscissa number: 1–5 represent two-mica granite(γβm), 6–12 represent pegmatite granite, 13–19 represent Ⅰ type pegmatite, 20–25 represent Ⅱ type pegmatite, 26–33 represent Ⅲ type pegmatite, 34–48 represent Ⅳ type pegmatite, 49–52 represent Ⅴ type pegmatite; See Table 3 for the analysis results of corresponding samples

    图  9  党坝锂矿床P11剖面微量元素含量变化曲线图

    1—第四系;2—侏倭组四段;3—侏倭组三段;4—侏倭组二段;5—侏倭组一段;6—矿体及编号;7—伟晶岩;8—钻孔;9—采样位置及编号;10—元素含量曲线

    Figure  9.  Trace element content curve of the P11 section from the Dangba lithium deposit

    1–Quaternary; 2–4th part of Triassic Zhuwo Formation; 3–3rd part of Triassic Zhuwo Formation; 4–2nd part of Triassic Zhuwo Formation; 5–1st part of Triassic Zhuwo Formation; 6–Orebody and its serial number; 7–Pegmatite; 8–Drilling; 9–Sampling place and its number; 10–Element content curve

    图  10  样品的球粒陨石标准化稀土元素配分曲线图(球粒陨石标准值据Boynton,1984 )

    Figure  10.  Chondrite-normalized REE distribution patterns of the samples (chondrite normalization date according to Boynton,1984)

    图  11  可尔因地区伟晶岩型锂矿地球化学找矿模型图

    Figure  11.  Geochemical prospecting model of pegmatite-type lithium deposits in the Ke'eryin area

    图  12  热达门锂矿床P32剖面图与龙古锂矿床P8剖面图

    a—热达门锂矿床P32剖面图;b—龙古锂矿床P8剖面图

    Figure  12.  P32 profile of the Redamen lithium deposit and P8 profile of the Longgu lithium deposit

    (a) P32 profile of the Redamen lithium deposit; (b) P8 profile of the Longgu lithium deposit

    表  1  可尔因花岗岩及伟晶岩主量元素分析结果

    Table  1.   Major elements analysis results of the Ke'eryin granite and pegmatite

    岩性送样编号w/×10−2A/NKA/CNKσ
    SiO2Al2O3Fe2O3FeONa2OK2OMgOCaOTiO2P2O5Li2OMnOLOITOL
    二云母花岗岩K-170.8614.920.151.083.185.180.351.310.230.160.020.031.4198.881.781.542.51
    K-271.5215.150.230.513.444.260.120.690.080.180.050.031.9198.181.971.812.08
    K-372.5913.990.231.072.715.780.260.820.230.15<0.020.021.5999.431.651.502.44
    LJG-167.5216.350.192.212.785.540.752.810.370.130.040.041.2399.961.971.472.82
    LJG-274.7313.750.090.773.514.590.210.800.090.160.020.021.26100.001.701.542.07
    伟晶相微斜
    钠长花岗岩
    K-473.0814.780.370.204.334.100.100.840.050.16<0.020.010.6998.691.751.602.36
    K-569.9916.170.590.225.144.41<0.050.880.010.20<0.020.160.5598.341.691.553.38
    K-671.8414.840.640.252.865.880.150.620.060.33<0.020.050.8898.401.701.592.65
    K-774.9113.370.180.253.016.11<0.050.410.040.20<0.020.010.6299.111.471.402.61
    K-874.5213.870.150.333.884.16<0.050.920.050.18<0.020.011.2099.271.731.552.05
    K-974.3013.33<0.101.163.015.110.220.540.110.20<0.020.021.4499.441.641.542.10
    K-1074.4214.09<0.100.763.664.560.110.760.060.160.030.011.3099.921.711.572.15
    Ⅰ类伟晶岩K-1170.1615.81<0.100.352.568.780.050.490.030.34<0.020.011.68100.271.391.344.74
    K-1272.2215.230.580.244.454.210.110.610.060.300.030.011.3999.431.761.642.57
    K-1376.8612.66<0.100.474.042.96<0.050.430.030.26<0.020.081.3499.121.811.701.45
    K-1478.3011.560.870.402.103.060.270.370.120.08<0.020.021.6398.772.242.090.76
    K-1574.8313.710.460.333.653.650.090.660.110.23<0.020.021.6699.391.881.731.67
    K-1672.2114.980.341.083.294.650.180.410.100.180.070.030.9498.451.891.792.16
    K-1772.6915.250.120.256.231.35<0.050.840.030.14<0.020.010.7197.622.011.811.94
    Ⅱ类伟晶岩K-1872.4414.940.160.254.974.25<0.050.190.020.170.020.171.1198.691.621.592.89
    K-1977.3412.02<0.100.545.101.34<0.050.430.030.300.020.030.9598.101.871.751.21
    K-2072.9614.490.550.163.565.24<0.050.230.020.190.030.030.8498.271.651.612.58
    K-2173.1614.241.470.294.861.750.100.480.050.180.020.170.7597.512.162.011.44
    K-2272.6514.821.200.724.582.180.200.500.090.120.060.080.7697.972.192.041.54
    K-2372.8914.710.570.184.623.54<0.050.620.030.300.020.050.7798.311.801.672.23
    Ⅲ类伟晶岩K-2473.8214.900.840.295.341.39<0.050.310.030.120.050.111.1598.342.212.121.47
    K-2574.6514.150.730.184.402.61<0.050.210.030.430.190.161.6799.402.021.961.55
    K-2671.6115.10<0.100.514.774.71<0.050.250.030.240.120.191.4198.941.591.553.14
    K-2773.4114.260.120.163.766.16<0.050.180.020.100.020.081.1199.381.441.413.24
    K-2873.2015.071.270.252.083.890.070.180.040.430.100.193.1099.872.522.451.18
    DB-1074.5714.610.220.335.562.89<0.050.240.020.180.140.360.5899.691.731.682.26
    DB-1173.6115.170.200.225.822.96<0.050.320.020.220.140.100.8599.621.731.672.52
    DB-1273.6814.860.430.475.053.15<0.050.330.020.240.060.230.8199.331.811.742.19
    Ⅳ类伟晶岩K-2969.9618.340.140.224.361.56<0.050.310.030.211.010.132.4998.763.102.941.30
    K-3073.6116.81<0.100.333.031.72<0.050.210.020.181.270.141.2598.573.543.390.74
    DB-175.6615.99<0.050.223.081.71<0.050.130.020.132.300.090.74100.073.343.250.70
    DB-273.3516.14<0.050.253.563.09<0.050.220.020.191.570.121.1099.602.432.351.46
    DB-374.2016.19<0.050.333.831.91<0.050.180.020.181.890.150.9199.782.822.741.05
    DB-474.4215.780.100.223.542.17<0.050.210.030.191.740.111.0799.582.762.671.04
    DB-574.2415.98<0.050.223.632.83<0.050.150.020.181.750.100.7999.882.482.421.33
    DB-668.0917.340.740.433.733.580.491.710.100.271.450.361.6199.892.371.922.13
    DB-774.4613.900.700.293.872.83<0.050.340.020.980.890.470.9199.662.071.971.43
    DB-874.8715.96<0.050.223.271.99<0.050.170.020.162.190.220.5699.643.032.940.87
    DB-973.7815.840.100.114.733.01<0.050.160.020.150.900.090.7199.602.052.011.95
    LJG-373.7617.170.150.313.080.860.110.390.010.260.000.091.67100.254.363.970.50
    LJG-467.8317.510.030.213.598.730.150.200.020.500.000.141.06100.361.421.406.11
    LJG-572.2018.080.420.152.790.960.130.240.030.180.000.251.4299.814.824.530.48
    LJG-671.6216.210.070.152.996.690.100.180.020.280.000.071.03100.321.671.643.27
    Ⅴ类伟晶岩K-3170.0817.490.100.116.664.01<0.050.610.020.590.050.040.54100.311.641.554.21
    K-3269.9917.700.050.116.634.010.070.350.020.330.050.020.2599.581.661.614.20
    K-3372.9616.790.090.146.591.700.050.240.020.200.050.021.0899.952.031.972.29
    K-3466.2018.520.100.245.522.820.132.490.031.87<0.050.161.8599.932.221.712.99
    注:σ为里特曼指数,σ=(K2O+Na2O)2/(SiO2-43),A/NK=Al2O3/(Na2O+K2O),A/CNK=Al2O3/(CaO+Na2O+K2O)
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    表  2  可尔因花岗岩和不同类型伟晶岩主量、微量及稀土元素分析结果平均值

    Table  2.   Average analysis results of major elements, trace elements and REEs in Ke'eryin granite and pegmatite of different types

    岩性样品数量主量元素平均含量w10−2特征值微量元素平均含量w/×10−6
    SiO2Al2O3Fe2O3FeONa2OK2OMgOCaOTiO2P2O5Li2OMnOLOITOLA/NKA/CNKσLiSnBGa
    二云母花岗岩 5 71.44 14.83 0.18 1.13 3.12 5.07 0.34 1.29 0.20 0.16 0.02 0.03 1.48 99.28 1.81 1.57 2.38 133.39 8.76 28.62 23.82
    伟晶相花岗岩 7 73.29 14.35 0.39 0.45 3.70 4.90 0.14 0.71 0.06 0.20 0.03 0.04 0.95 99.02 1.67 1.54 2.47 64.31 6.70 33.30 19.93
    Ⅰ类伟晶岩 7 73.90 14.17 0.47 0.45 3.76 4.09 0.14 0.54 0.07 0.22 0.05 0.03 1.34 99.01 1.85 1.73 2.18 101.27 15.12 614.11 24.93
    Ⅱ类伟晶岩 6 73.62 14.20 0.74 0.37 4.49 3.20 0.15 0.43 0.04 0.21 0.03 0.08 0.93 98.27 1.88 1.77 2.01 138.62 27.61 1032.21 22.90
    Ⅲ类伟晶岩 8 73.57 14.76 0.54 0.30 4.60 3.47 0.07 0.25 0.03 0.25 0.10 0.17 1.33 99.32 1.88 1.82 2.19 469.70 104.06 278.37 34.71
    Ⅳ类伟晶岩 15 72.80 16.48 0.27 0.24 3.54 2.91 0.20 0.32 0.03 0.27 1.58 0.17 1.15 99.72 2.82 2.68 1.62 7326.95 522.35 15.94 31.45
    Ⅴ类伟晶岩 4 69.81 17.62 0.09 0.15 6.35 3.13 0.09 0.92 0.02 0.75 0.05 0.06 0.93 99.94 1.89 1.71 3.42 22.54 285.26 14.43 26.90
    岩性 样品数量 微量元素平均含量w/×10-6 特征值
    Be Rb Co Cs U Th Sr Ba Nb Ta Zr Hf Y Sc Cd Tl F Nb/Ta Ta/Zr Zr/Hf Ti2O/Ta
    二云母花岗岩 5 6.04 325.92 13.27 15.73 7.92 16.81 135.33 571.01 15.54 1.82 104.39 2.16 15.27 3.86 0.06 1.34 733.01 9.78 0.03 63.80 1094.71
    伟晶相花岗岩 7 5.59 286.31 12.52 10.54 2.85 4.23 37.70 62.00 12.78 1.03 14.67 0.94 10.99 5.83 0.08 1.16 319.45 12.67 0.08 16.22 548.33
    Ⅰ类伟晶岩 7 34.81 344.69 16.03 16.14 2.31 3.05 33.42 50.41 25.26 2.85 10.72 0.89 7.48 4.46 0.08 1.68 455.50 8.63 0.27 13.31 242.14
    Ⅱ类伟晶岩 6 49.51 577.80 13.82 47.07 2.62 2.51 14.95 39.07 27.46 7.05 19.49 1.05 7.75 3.42 0.17 2.90 545.30 5.16 0.47 16.16 59.81
    Ⅲ类伟晶岩 8 143.11 939.61 9.76 72.26 6.18 1.63 8.89 44.04 67.70 26.55 16.45 1.35 3.33 1.77 1.83 3.85 1091.46 3.80 1.69 12.75 9.67
    Ⅳ类伟晶岩 15 143.98 1090.21 3.60 76.61 3.89 3.65 14.44 37.94 72.41 48.40 14.05 1.54 1.42 1.24 1.16 4.93 827.47 1.98 4.16 9.58 5.31
    Ⅴ类伟晶岩 4 122.25 1133.00 0.65 67.85 5.86 2.40 61.19 87.06 69.55 187.12 24.28 3.09 3.11 2.55 0.75 4.14 814.43 0.39 7.73 8.20 1.21
    岩性 样品数量 稀土元素平均含量w/×10−6 特征值
    La Ce Pr Nd Sm Eu Gd Tb Dy Ho Er Tm Yb Lu ΣREE ΣLREE ΣHREE LREE/HREE δEu δCe
    二云母花岗岩 5 39.43 90.25 8.57 32.79 6.68 0.93 5.07 0.72 2.88 0.51 1.29 0.17 0.94 0.14 190.27 178.54 11.73 14.40 0.45 1.12
    伟晶相花岗岩 7 7.39 18.93 1.63 5.19 1.49 0.26 1.34 0.29 1.71 0.29 0.81 0.15 0.90 0.13 40.52 34.89 5.63 7.26 0.55 1.28
    Ⅰ类伟晶岩 7 5.45 13.41 1.14 3.77 1.02 0.21 0.93 0.20 1.22 0.21 0.55 0.10 0.52 0.07 28.79 25.00 3.79 6.85 0.69 1.25
    Ⅱ类伟晶岩 6 4.87 12.83 1.02 3.25 0.97 0.12 0.85 0.19 1.16 0.19 0.52 0.10 0.62 0.09 26.78 23.06 3.72 6.79 0.50 1.43
    Ⅲ类伟晶岩 8 3.14 8.89 0.65 2.19 0.49 0.11 0.45 0.09 0.54 0.10 0.28 0.05 0.30 0.05 17.33 15.47 1.86 8.35 0.73 1.62
    Ⅳ类伟晶岩 15 1.69 4.48 0.33 1.09 0.23 0.08 0.21 0.04 0.25 0.05 0.14 0.03 0.14 0.03 8.79 7.90 0.89 9.47 1.55 1.59
    Ⅴ类伟晶岩 4 2.76 6.45 0.59 2.07 0.41 0.12 0.41 0.08 0.49 0.10 0.28 0.05 0.29 0.04 14.13 12.40 1.73 7.58 0.82 1.13
    注:σ为里特曼指数,σ=(K2O+Na2O)2/(SiO2-43),A/NK=Al2O3/(Na2O+K2O),A/CNK=Al2O3/(CaO+Na2O+K2O)
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    表  3  可尔因地区二云母花岗岩及伟晶岩微量元素分析结果

    Table  3.   Trace element analysis results of the Ke'eryin granite and pegmatite

    岩性送样
    编号
    w/×10−6Nb/TaZr/HfTa/ZrTi2O/Ta
    LiSnBGaBeRbCoNiCsUThSrBaNbTaZrHfYScCdTlF
    二云母花岗岩 K-1 92.49 9.41 4.43 25.64 7.15 305 14.74 4.01 14.17 1.91 24.22 140.48 607.94 10.26 1.11 130.62 0.96 12.80 3.63 0.07 0.70 1178 9.25 136.47 0.01 2040.60
    K-2 242.88 15.72 39.44 30.76 9.19 443 12.21 3.71 24.54 3.53 8.71 44.74 166.05 20.79 2.88 48.54 1.73 13.06 4.11 0.06 1.67 1076 7.21 28.11 0.06 274.68
    K-3 71.19 5.85 3.93 24.51 3.94 333 12.88 3.39 10.11 3.19 40.11 96.25 437.08 12.76 0.95 143.49 1.48 15.21 3.84 0.06 1.63 471 13.4 96.64 0.01 2432.14
    LJG-1 167.00 5.21 34.50 19.70 4.31 260 13.50 20.80 8.01 335.00 1486.00 13.30 1.08 141.00 4.32 17.10 660 12.3 32.64 0.01 3425.93
    LJG-2 93.40 7.59 60.80 18.50 5.60 289 16.30 10.20 2.99 60.20 158.00 20.60 3.08 58.30 2.32 18.20 280 6.69 25.13 0.05 292.21
    伟晶相微斜钠长花岗岩 K-4 55.50 6.39 61.35 17.96 4.51 226 13.48 3.84 10.32 1.93 2.95 33.46 55.92 12.81 0.79 10.00 0.65 4.36 3.37 0.09 0.97 289 16.15 15.35 0.08 627.73
    K-5 21.62 8.04 38.08 18.84 6.10 246 11.76 3.43 10.07 3.29 4.02 31.19 59.72 4.32 0.35 21.44 0.84 15.35 6.38 0.20 0.96 517 12.30 25.47 0.02 341.11
    K-6 54.62 8.24 19.68 22.78 4.48 336 9.36 3.59 11.23 1.47 2.94 31.76 84.98 16.23 1.04 14.20 0.72 18.04 7.90 0.09 1.15 151 15.67 19.73 0.07 622.29
    K-7 74.02 5.78 13.65 18.54 4.10 403 14.72 3.92 15.48 1.55 4.68 23.36 44.97 13.80 1.06 10.00 0.88 14.03 9.50 0.04 1.23 342 13.02 11.43 0.11 421.69
    K-8 39.03 8.18 5.98 19.25 6.58 242 13.00 3.50 7.86 5.72 4.81 62.08 62.74 11.57 1.20 13.41 1.12 10.26 3.96 0.07 1.08 507 9.63 12.00 0.09 444.72
    K-9 57.51 4.53 80.30 21.92 3.55 291 13.05 4.15 10.23 2.94 4.56 35.75 49.50 17.85 1.60 10.00 1.29 4.72 5.90 0.05 1.56 185 11.1 7.78 0.16 685.03
    K-10 147.85 5.72 14.06 20.23 9.84 262 12.28 3.57 8.59 3.08 5.64 46.29 76.18 12.90 1.20 23.63 1.08 10.20 3.78 0.03 1.17 246 10.8 21.78 0.05 525.61
    Ⅰ类伟晶岩 K-11 49.81 7.83 16.36 21.20 4.57 543 14.08 3.90 18.93 0.85 0.83 37.06 87.59 11.25 1.49 10.00 0.48 8.07 2.50 0.04 3.01 353 7.56 20.83 0.15 211.14
    K-12 145.04 15.90 1199.00 26.67 11.11 441 13.72 3.88 19.47 1.70 2.92 20.15 38.12 20.54 2.62 10.00 1.08 9.12 3.28 0.07 2.37 442 7.85 9.23 0.26 215.40
    K-13 34.92 20.11 72.71 22.91 10.30 317 18.32 3.25 21.85 2.32 4.51 11.86 22.55 16.07 3.71 12.68 1.13 3.42 1.94 0.02 1.51 379 4.33 11.18 0.29 72.81
    K-14 77.93 14.21 1939.00 24.75 182.36 273 19.85 3.44 11.95 4.52 3.41 34.19 61.47 16.38 1.34 10.00 1.18 6.01 5.80 0.04 1.39 704 12.2 8.46 0.13 912.56
    K-15 65.97 15.51 7.71 26.10 5.03 276 13.93 3.93 15.10 3.36 4.40 51.64 70.60 13.41 1.29 12.35 1.00 9.93 8.81 0.22 1.18 609 10.4 12.29 0.10 878.58
    K-16 302.86 28.73 818.00 29.89 17.04 458 14.44 3.66 19.80 2.56 3.34 21.97 33.18 85.89 7.41 10.00 0.77 10.25 4.84 0.15 1.94 285 11.6 12.96 0.74 134.85
    K-17 32.38 3.53 246.00 22.99 13.26 105 17.89 3.76 5.84 0.85 1.95 57.08 39.34 13.27 2.07 10.00 0.55 5.59 4.04 0.05 0.40 416 6.40 18.21 0.21 156.88
    Ⅱ类伟晶岩 K-18 146.61 97.04 28.23 26.22 51.57 1947 11.11 3.27 134.25 2.07 1.30 15.39 85.97 29.35 13.26 10.00 0.77 2.92 1.16 <0.02 10.24 403 2.21 12.96 1.33 12.46
    K-19 91.66 9.90 942.00 18.13 105.70 206 13.52 4.20 40.72 3.46 3.85 9.44 22.74 25.97 5.07 10.00 0.94 8.17 5.19 0.18 1.09 507 5.13 10.69 0.51 56.58
    K-20 135.27 13.07 1225.00 20.30 65.56 583 13.13 3.28 26.99 0.92 1.47 5.44 48.56 19.02 2.73 10.00 0.72 2.22 1.62 0.05 2.69 336 6.96 13.92 0.27 70.53
    K-21 114.32 11.50 2424.00 23.19 67.01 224 14.08 3.48 27.37 6.71 2.54 10.97 11.82 43.18 16.00 68.60 2.08 15.03 2.79 0.55 1.19 487 2.70 32.90 0.23 28.44
    K-22 272.21 37.85 1829.00 26.48 14.35 337 16.91 4.21 56.75 1.35 3.52 18.63 27.31 29.90 4.65 11.83 1.10 10.19 6.22 0.09 1.51 1040 6.43 10.79 0.39 183.41
    K-23 109.03 8.78 163.14 21.07 7.57 402 11.99 3.75 27.24 1.54 1.86 11.40 26.69 19.55 4.79 15.30 0.82 8.22 2.50 0.05 1.90 589 4.08 18.58 0.31 64.41
    Ⅲ类伟晶岩 K-24 224.8 53.81 1393.00 37.87 189.32 396 9.76 3.48 19.46 0.96 0.90 4.51 25.06 86.90 10.51 14.23 1.13 2.36 1.76 0.33 1.51 847 8.27 12.61 0.74 32.50
    K-25 867.9 111.48 197.70 45.47 135.55 968 13.53 3.81 127.95 11.39 1.07 5.83 27.80 70.16 14.24 24.63 1.10 2.51 1.63 0.24 4.68 1510 4.93 22.49 0.58 18.54
    K-26 535.0 103.82 45.82 36.59 106.23 1575 14.37 4.45 196.48 1.60 2.03 17.41 70.74 42.37 15.29 12.93 0.98 6.44 3.01 0.74 7.81 923 2.77 13.19 1.18 19.91
    K-27 90.5 217.52 143.39 31.84 119.81 1352 13.89 4.36 82.47 0.88 3.07 18.66 112.59 41.11 13.95 10.00 1.10 4.75 2.69 <0.02 6.08 299 2.95 9.13 1.39 15.56
    K-28 464.3 148.42 170.78 58.13 84.08 1330 24.81 5.02 46.98 8.73 2.36 7.89 42.97 94.72 19.25 10.00 0.71 3.99 3.55 <0.02 5.22 2191 4.92 14.04 1.92 18.26
    DB-10 633.5 70.35 8.39 22.50 207.80 674 0.74 3.29 39.92 9.58 1.41 4.53 18.22 63.61 74.90 27.69 2.36 2.13 0.53 6.10 1.68 951 0.85 11.72 2.71 2.52
    DB-11 653.6 76.58 7.88 23.99 192.30 651 0.48 4.13 36.86 9.20 1.57 8.49 33.15 102.03 53.65 12.02 1.62 1.90 0.54 0.66 1.89 533 1.90 7.44 4.46 3.67
    DB-12 287.9 50.54 260.00 21.29 109.80 572 0.51 3.39 27.98 7.07 0.64 3.81 21.76 40.71 10.63 20.10 1.77 2.52 0.41 2.89 1.96 1478 3.83 11.34 0.53 17.88
    Ⅳ类伟晶岩 K-29 4702.9 967.32 8.16 45.43 122.21 783 19.16 4.20 52.79 3.03 4.35 26.84 33.65 73.64 16.59 17.13 1.38 6.89 4.34 <0.02 3.57 583 4.44 12.46 0.97 15.52
    K-30 5911.7 713.71 14.07 45.00 135.57 862 14.53 3.69 46.70 3.99 2.16 20.94 50.39 66.44 34.22 26.94 1.94 3.00 2.22 <0.02 4.59 233 1.94 13.91 1.27 6.20
    DB-1 10700.4 507.84 11.19 26.40 105.70 692 0.41 3.52 45.21 2.95 1.28 7.18 22.16 59.91 87.55 10.00 1.09 0.96 0.47 1.58 3.41 591 0.68 9.16 8.76 2.44
    DB-2 7313.0 450.24 9.40 27.09 128.90 1362 0.27 3.49 50.66 1.87 1.41 32.25 67.99 46.36 34.88 10.00 2.56 0.62 3.24 1.41 7.20 599 1.33 3.90 3.49 4.73
    DB-3 8778.2 389.71 21.03 28.43 118.95 828 0.70 3.23 38.69 4.89 0.92 6.96 31.83 68.09 42.64 10.00 1.42 1.00 0.59 1.13 3.70 709 1.60 7.05 4.26 4.77
    DB-4 8077.2 478.71 15.54 26.25 177.50 894 0.41 4.74 46.25 5.67 1.88 6.62 47.82 74.02 101.48 32.99 2.96 1.10 0.57 1.48 4.10 1471 0.73 11.16 3.08 2.50
    DB-5 8147.3 803.01 14.52 26.47 204.50 1260 0.24 3.46 57.10 5.82 0.86 4.21 63.24 62.59 73.74 10.00 1.04 0.09 0.14 0.80 6.76 1345 0.85 9.62 7.37 2.53
    DB-6 6712.5 274.73 24.09 28.54 164.80 1463 2.27 6.53 149.68 3.10 1.99 44.50 111.66 63.90 79.00 31.37 2.07 3.06 1.15 0.90 8.71 172 0.81 15.17 2.52 12.88
    DB-7 4125.3 110.89 25.84 26.86 278.20 1013 0.32 3.65 33.62 7.06 0.69 4.65 40.01 57.13 31.04 10.00 0.71 0.54 0.15 1.37 5.24 192 1.84 14.01 3.10 7.42
    DB-8 10185.1 444.22 7.55 29.00 151.95 906 0.43 3.71 36.99 7.75 1.62 3.81 33.67 75.09 67.22 11.73 1.32 0.59 0.30 1.03 5.10 580 1.12 8.90 5.73 3.08
    DB-9 4172.8 292.83 13.46 22.70 229.60 848 0.87 6.55 52.02 7.74 0.95 12.45 46.94 64.36 48.78 10.00 2.12 1.44 0.52 0.79 1.83 997 1.32 4.73 4.88 3.73
    LJG-3 11125.0 803.00 29.30 47.30 144.00 294 33.90 0.38 2.93 23.40 3.19 152.00 31.30 10.20 0.73 0.45 2490 4.86 13.97 3.07 4.47
    LJG-4 1866.0 272.00 15.80 23.90 89.40 2643 293.00 2.17 10.90 3.89 4.09 18.00 21.20 4.02 1.59 0.31 490 0.85 2.53 5.27 7.55
    LJG-5 13855.0 906.00 18.70 43.40 54.20 348 72.50 1.14 17.60 9.64 5.32 108.00 29.60 12.00 0.87 0.73 1270 3.65 13.79 2.47 8.45
    LJG-6 4232.0 421.00 10.40 25.00 54.20 2158 140.00 0.84 5.18 9.32 7.11 96.70 26.70 4.32 1.30 0.52 690 3.62 3.32 6.18 6.74
    Ⅴ类伟晶岩 K-31 22.2 142.78 3.07 25.32 105.00 1295 0.93 6.25 42.99 1.42 1.06 85.37 85.26 62.51 139.12 16.82 1.63 1.48 0.53 0.60 4.75 353 0.45 10.35 8.27 1.38
    K-32 15.9 330.94 8.64 25.72 153.00 1420 0.49 4.24 103.57 1.61 1.70 20.05 71.72 65.43 254.11 30.06 3.90 1.76 0.58 0.48 4.75 1178 0.26 7.71 8.45 0.67
    K-33 10.5 535.18 13.67 29.23 114.00 644 0.55 3.90 60.43 16.60 2.46 38.95 59.79 71.27 174.74 23.44 3.40 4.72 1.74 1.01 2.52 1283 0.41 6.90 7.45 1.24
    K-34 41.6 132.15 32.35 27.32 117.00 1173 0.64 3.63 64.41 3.82 4.37 100.41 131.47 79.00 180.53 26.79 3.42 4.50 7.34 0.90 4.52 444 0.44 7.83 6.74 1.81
    注:LJG-3—LJG-6等6件样品为2014年测试,未测试Co、Ni、Sc、Cd、Tl等元素,由于时间间隔较久现已无法补充分析,缺失的元素不影响本次地球化学指标总结
    下载: 导出CSV

    表  4  可尔因花岗岩及伟晶岩稀土元素分析结果

    Table  4.   Rare-earth element analysis results of the Ke'eryin granite and pegmatite

    岩性送样
    编号
    w/×10−6ΣREELREE/HREEδEuδCe
    LaCePrNdSmEuGdTbDyHoErTmYbLu
    二云母花岗岩 K-1 52.20 130.44 10.37 42.25 7.66 0.88 5.83 0.70 2.69 0.40 1.10 0.14 0.70 0.10 255.10 20.88 0.39 1.27
    K-2 14.64 36.05 3.42 11.80 2.88 0.31 2.47 0.44 2.33 0.38 0.98 0.17 0.91 0.14 76.93 8.84 0.35 1.19
    K-3 58.50 148.24 12.37 42.39 9.57 0.81 7.33 0.97 3.88 0.55 1.30 0.13 0.64 0.09 286.57 18.25 0.28 1.26
    LJG-1 54.90 102.00 12.50 50.40 8.91 2.10 6.05 0.79 3.18 0.61 1.59 0.22 1.30 0.21 244.76 16.55 0.83 0.90
    LJG-2 16.90 34.50 4.21 17.10 4.38 0.55 3.68 0.71 2.34 0.62 1.49 0.20 1.14 0.17 87.99 7.50 0.41 0.96
    伟晶相微斜
    钠长花岗岩
    K-4 3.92 11.71 0.82 2.26 0.66 0.11 0.52 0.10 0.44 0.07 0.17 0.03 0.16 0.02 20.98 12.89 0.56 1.50
    K-5 8.44 23.15 1.77 5.24 1.31 0.26 1.16 0.26 1.93 0.43 1.46 0.35 2.45 0.38 48.54 4.76 0.63 1.37
    K-6 6.81 18.68 1.60 5.17 2.02 0.25 1.96 0.53 3.07 0.47 1.14 0.20 1.08 0.15 43.15 4.02 0.38 1.32
    K-7 11.66 30.37 2.82 9.12 2.00 0.43 1.78 0.34 2.01 0.38 1.07 0.19 1.04 0.15 63.43 8.11 0.68 1.24
    K-8 7.51 17.61 1.55 5.17 1.58 0.29 1.51 0.31 1.79 0.29 0.74 0.13 0.68 0.10 39.25 6.07 0.57 1.18
    K-9 5.15 12.88 1.05 3.42 1.13 0.21 0.92 0.18 0.93 0.13 0.31 0.05 0.26 0.04 26.68 8.46 0.61 1.27
    K-10 8.24 18.13 1.79 5.96 1.77 0.23 1.52 0.32 1.81 0.29 0.75 0.12 0.64 0.09 41.63 6.51 0.42 1.09
    Ⅰ类伟晶岩 K-11 2.24 5.35 0.44 1.44 0.52 0.16 0.56 0.18 1.21 0.19 0.44 0.07 0.31 0.04 13.15 3.38 0.90 1.22
    K-12 5.22 10.65 1.08 3.17 1.01 0.25 1.08 0.26 1.75 0.28 0.71 0.12 0.59 0.08 26.30 4.40 0.73 1.03
    K-13 3.89 10.63 0.71 2.35 0.52 0.08 0.44 0.08 0.49 0.09 0.28 0.06 0.42 0.06 20.07 9.45 0.50 1.43
    K-14 5.89 14.58 1.16 4.12 1.00 0.25 0.87 0.16 0.92 0.17 0.48 0.08 0.44 0.06 30.20 8.50 0.80 1.27
    K-15 8.56 20.02 1.84 6.41 1.56 0.31 1.38 0.28 1.62 0.29 0.79 0.14 0.76 0.11 44.05 7.20 0.63 1.16
    K-16 7.84 19.02 1.75 5.77 1.75 0.19 1.45 0.31 1.73 0.27 0.71 0.12 0.70 0.10 41.69 6.73 0.35 1.19
    K-17 4.47 13.65 1.03 3.16 0.78 0.23 0.70 0.15 0.86 0.15 0.41 0.07 0.41 0.06 26.08 8.28 0.93 1.47
    Ⅱ类伟晶岩 K-18 2.75 8.02 0.52 1.61 0.36 0.09 0.36 0.08 0.43 0.07 0.20 0.04 0.20 0.03 14.76 9.47 0.76 1.51
    K-19 7.60 17.09 1.61 5.45 1.52 0.19 1.24 0.25 1.36 0.23 0.64 0.12 0.65 0.10 38.06 7.29 0.41 1.12
    K-20 2.30 6.94 0.47 1.58 0.38 0.08 0.33 0.07 0.46 0.08 0.26 0.05 0.31 0.04 13.35 7.34 0.68 1.52
    K-21 4.79 12.71 1.06 3.02 1.48 0.04 1.22 0.35 2.09 0.30 0.76 0.18 1.17 0.16 29.32 3.71 0.09 1.30
    K-22 8.89 20.76 1.81 5.56 1.33 0.25 1.23 0.23 1.41 0.25 0.69 0.13 0.73 0.11 43.42 8.08 0.59 1.18
    K-23 2.88 11.44 0.67 2.27 0.72 0.11 0.72 0.19 1.22 0.21 0.55 0.10 0.63 0.09 21.76 4.87 0.46 1.91
    Ⅲ类伟晶岩 K-24 2.52 10.59 0.51 1.70 0.40 0.12 0.38 0.08 0.45 0.07 0.22 0.04 0.22 0.04 17.35 10.57 0.93 2.13
    K-25 1.62 6.04 0.38 1.24 0.34 0.05 0.29 0.07 0.39 0.06 0.18 0.03 0.20 0.03 10.92 7.74 0.48 1.79
    K-26 6.38 11.24 1.40 4.49 0.94 0.16 0.84 0.17 0.95 0.17 0.50 0.08 0.47 0.07 27.82 7.56 0.54 0.86
    K-27 5.66 15.20 1.06 3.61 0.81 0.19 0.78 0.15 0.91 0.18 0.53 0.09 0.52 0.08 29.77 8.19 0.72 1.40
    K-28 4.31 11.30 0.94 3.42 0.69 0.14 0.61 0.11 0.64 0.12 0.33 0.06 0.33 0.05 23.05 9.24 0.65 1.29
    DB-10 1.68 5.16 0.32 1.07 0.23 0.08 0.22 0.04 0.29 0.06 0.17 0.03 0.23 0.04 9.62 7.91 1.07 1.59
    DB-11 1.71 7.43 0.35 1.14 0.25 0.08 0.25 0.05 0.32 0.06 0.16 0.03 0.20 0.03 12.06 9.96 0.97 2.19
    DB-12 1.24 4.19 0.27 0.82 0.24 0.04 0.23 0.06 0.38 0.06 0.18 0.03 0.24 0.03 8.01 5.62 0.51 1.67
    Ⅳ类伟晶岩 K-29 5.96 16.03 1.25 3.98 0.85 0.19 0.79 0.15 1.29 0.17 0.49 0.09 0.56 0.08 31.85 7.80 0.70 1.34
    K-30 1.75 6.25 0.33 1.08 0.28 0.06 0.25 0.05 0.34 0.06 0.17 0.03 0.21 0.03 10.89 8.55 0.68 1.85
    DB-1 0.92 4.29 0.21 0.73 0.15 0.06 0.15 0.03 0.17 0.03 0.10 0.02 0.11 0.02 6.99 10.10 1.21 2.26
    DB-2 0.72 4.02 0.15 0.52 0.10 0.03 0.10 0.02 0.10 0.02 0.05 <0.01 0.06 <0.01 5.93 14.21 0.91 2.80
    DB-3 1.16 5.52 0.24 0.84 0.16 0.05 0.16 0.03 0.16 0.03 0.10 0.02 0.11 0.02 8.60 12.65 0.95 2.39
    DB-4 1.29 4.10 0.26 0.84 0.17 0.05 0.16 0.03 0.19 0.04 0.11 0.02 0.13 0.02 7.41 9.59 0.91 1.61
    DB-5 0.17 0.47 0.03 0.10 0.02 <0.01 0.02 <0.01 0.01 <0.01 <0.01 <0.01 0.01 <0.01 1.10 3.21 7.57 1.50
    DB-6 3.80 7.05 0.81 2.82 0.49 0.11 0.46 0.08 0.48 0.10 0.30 0.05 0.31 0.05 16.91 8.24 0.70 0.92
    DB-7 0.47 1.69 0.08 0.20 0.04 0.01 0.05 0.01 0.07 0.01 0.03 <0.01 0.03 <0.01 2.79 8.30 0.68 1.93
    DB-8 0.96 3.58 0.18 0.54 0.09 0.02 0.09 0.01 0.08 0.01 0.04 <0.01 0.05 <0.01 5.75 14.13 0.67 1.94
    DB-9 0.85 4.22 0.20 0.71 0.15 0.06 0.17 0.03 0.22 0.05 0.15 0.03 0.17 0.03 7.04 7.28 1.15 2.38
    LJG-3 1.94 2.69 0.26 0.89 0.20 0.12 0.18 0.04 0.18 0.04 0.11 0.02 0.12 0.02 6.81 8.59 1.90 0.79
    LJG-4 1.59 2.34 0.41 1.00 0.42 0.12 0.25 0.04 0.18 0.04 0.10 0.01 0.06 0.01 6.57 8.52 1.05 0.68
    LJG-5 2.20 2.83 0.28 1.16 0.22 0.12 0.19 0.03 0.16 0.04 0.10 0.02 0.10 0.02 7.47 10.32 1.75 0.75
    LJG-6 1.60 2.10 0.23 0.95 0.18 0.13 0.15 0.03 0.11 0.03 0.08 0.01 0.07 0.01 5.68 10.59 2.35 0.74
    Ⅴ类伟晶岩 K-31 2.25 3.44 0.38 1.23 0.24 0.06 0.23 0.04 0.23 0.04 0.11 0.02 0.12 0.02 8.41 9.38 0.77 0.82
    K-32 1.74 4.04 0.39 1.35 0.26 0.07 0.25 0.05 0.29 0.06 0.17 0.03 0.19 0.03 8.92 7.34 0.83 1.14
    K-33 4.01 9.40 0.96 3.43 0.66 0.17 0.64 0.13 0.78 0.15 0.46 0.07 0.48 0.07 21.41 6.70 0.79 1.12
    K-34 3.04 8.93 0.65 2.27 0.49 0.15 0.51 0.10 0.65 0.13 0.37 0.06 0.38 0.05 17.78 6.90 0.91 1.46
    下载: 导出CSV

    表  5  可尔因地区伟晶岩型锂矿地球化学找矿指标

    Table  5.   Geochemical prospecting indexes of the pegmatite type lithium deposits in the Ke'eryin area

    平面变化垂向变化
    指标含量/值
    (矿体)
    平均值
    (矿体)
    变化趋势
    (Ⅰ~Ⅴ)
    指标含量/值平均值变化趋势
    (由浅到深)
    特征元素指标 Li 1866~13855 7202 突然升高 品位指标
    (矿体)
    A/NK 1.42~4.82 2.72 正相关
    B 5.36~162.49 21.06 突然降低 A/CNK 1.40~4.53 2.59
    Sn 111~967 451 逐渐升高 σ 0.43~6.11 1.42 负相关
    Rb 294~2643 1026 K+Na 3.75~12.32 6.31
    Be 54.2~279.0 153 K/Na 0.20~2.43 0.7
    Nb 18.0~152.0 71.5
    Ta 16.6~290.0 68.9
    指示指标 Cs 13.2~293.0 58.7 逐渐升高 指示指标
    (矿体及伟晶岩)
    B 2.06~1000.00 51.57 突然升高
    Tl 1.76~10.61 4.75 U 1.27~27.61 7.55 逐渐升高
    F 151~2809 947 Zr 10.4~208.3 26.7
    Zr 4.02~32.99 13.73 逐渐降低 Be 1.47~655.00 165.11
    Y 0.09~6.89 1.94 Sn 50.5~922.3 313.5 逐渐降低
    ΣREE 0.82~31.87 10.69 Rb 345~2094 968
    Ta/Zr 0.97~17.08 5.33 逐渐升高 Sr 3.53~133.65 32.28
    Nb/Ta 0.30~4.86 1.46 逐渐降低 Ba 13.6~551.3 69.5
    Zr/Hf 2.53~18.00 9.23 Tl 1.34~10.61 4.33
    K/Na 0.20~2.43 0.7 In 0.68~0.05 0.18
    TiO2/Ta 0.73~15.52 4.61
    注:元素含量单位均为10−6,K+Na=w(Na2O)+w(K2O)(%),K/Na=w(Na2O)/w(K2O),σ=(K2O+Na2O)2/(SiO2−43)
    下载: 导出CSV

    表  6  Li2O含量与品位指标的相关系数

    Table  6.   Correlation coefficient between Li2O content and grade indexes

    指标Li2OA/NKA/CNKσK+NaK/Na
    Li2O1
    A/NK0.811
    A/CNK0.820.991
    σ−0.67−0.70−0.711
    K+Na−0.79−0.87−0.870.951
    K/Na−0.50−0.62−0.610.860.821
    下载: 导出CSV
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  • 收稿日期:  2022-06-20
  • 修回日期:  2022-09-15
  • 录用日期:  2022-06-15
  • 预出版日期:  2022-11-02

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