Petrogenesis of Alkaline Complex of the Longbaoshan Rare Earth Element Deposit in the Luxi Block, North China Craton, China
Abstract
:1. Introduction
2. Geological Setting
3. Analytical Methods
3.1. Sphene LA-ICP-MS U-Pb Dating and REE Composition Analysis
3.2. Whole-Rock Major and Trace Elements Analysis
4. Results
4.1. Petrology and Rock Association
4.1.1. Hornblende Diorite
4.1.2. Hornblende Syenite Porphyry
4.1.3. Biotite Monzonite Porphyry
4.1.4. Aegirine Diorite Porphyrite
4.2. Geochronology and REE Geochemistry of Sphene
4.3. Whole-Rock Major and Trace Elements Geochemistry
5. Discussion
5.1. Early Cretaceous Alkaline Granite Magmatism
5.2. The Role of Fractional Crystallization and Assimilation
5.3. Nature of the Alkaline Magma Source
5.4. Tectonic Implications
6. Conclusions
- (1)
- The parent magma of the Longbaoshan alkaline complex was crystallized at 128–112 Ma, which is consistent with the Early Cretaceous magmatic event in the North China Craton.
- (2)
- The magma of the Longbaoshan alkaline complex was derived from an enriched lithospheric mantle. The lithospheric mantle was metasomatized by sediment-derived melts during a subduction process.
- (3)
- The parent magma of the Longbaoshan alkaline complex was emplaced in an extensional setting during the rollback of the subducting plate and experienced a subsequent fractional crystallization and continental crust assimilation process.
Author Contributions
Funding
Acknowledgments
Conflicts of Interest
References
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Sample No. | Th (ppm) | U (ppm) | Th/U | Isotopic Ratios | |||||
---|---|---|---|---|---|---|---|---|---|
207Pb/206Pb | 207Pb/235U | 206Pb/238U | |||||||
Ratio | 1σ | Ratio | 1σ | Ratio | 1σ | ||||
21LBS27-1-1 | 358 | 39.5 | 9.05 | 0.6090 | 0.0080 | 5.1845 | 0.1089 | 0.0617 | 0.0010 |
21LBS27-1-2 | 365 | 55.8 | 6.53 | 0.6767 | 0.0074 | 8.7660 | 0.1423 | 0.0940 | 0.0013 |
21LBS27-1-3 | 256 | 31.2 | 8.20 | 0.6397 | 0.0141 | 5.6718 | 0.0875 | 0.0650 | 0.0014 |
21LBS27-1-4 | 450 | 54.7 | 8.23 | 0.5447 | 0.0092 | 3.5756 | 0.0577 | 0.0478 | 0.0007 |
21LBS27-1-5 | 499 | 98.9 | 5.04 | 0.4150 | 0.0095 | 1.9649 | 0.0618 | 0.0343 | 0.0007 |
21LBS27-1-6 | 432 | 44.5 | 9.72 | 0.6229 | 0.0086 | 5.3270 | 0.0581 | 0.0623 | 0.0007 |
21LBS27-1-7 | 345 | 30.6 | 11.27 | 0.6095 | 0.0166 | 6.0363 | 0.1665 | 0.0721 | 0.0017 |
21LBS27-1-8 | 308 | 31.8 | 9.68 | 0.6361 | 0.0065 | 5.9900 | 0.0554 | 0.0686 | 0.0007 |
21LBS27-1-9 | 348 | 34.9 | 9.97 | 0.6137 | 0.0079 | 5.7541 | 0.0854 | 0.0683 | 0.0011 |
21LBS27-1-10 | 258 | 28.8 | 8.96 | 0.6607 | 0.0109 | 8.2779 | 0.3041 | 0.0905 | 0.0028 |
21LBS27-1-11 | 315 | 47.7 | 6.61 | 0.5588 | 0.0079 | 4.2311 | 0.1059 | 0.0546 | 0.0009 |
21LBS27-1-12 | 303 | 42.4 | 7.17 | 0.5704 | 0.0131 | 5.0765 | 0.1669 | 0.0648 | 0.0017 |
21LBS27-1-13 | 232 | 40.8 | 5.69 | 0.5628 | 0.0101 | 5.0545 | 0.1080 | 0.0654 | 0.0012 |
21LBS27-1-14 | 251 | 32.6 | 7.71 | 0.6782 | 0.0172 | 9.7381 | 0.5922 | 0.1033 | 0.0048 |
21LBS27-1-15 | 334 | 43.4 | 7.70 | 0.5564 | 0.0131 | 4.5255 | 0.2200 | 0.0581 | 0.0020 |
21LBS27-1-16 | 304 | 35.5 | 8.57 | 0.5448 | 0.0104 | 4.5233 | 0.1461 | 0.0603 | 0.0018 |
21LBS27-1-17 | 258 | 33.9 | 7.61 | 0.6541 | 0.0112 | 6.8752 | 0.1406 | 0.0762 | 0.0015 |
21LBS27-1-18 | 249 | 29.6 | 8.40 | 0.6695 | 0.0089 | 8.8449 | 0.1527 | 0.0959 | 0.0014 |
21LBS27-1-19 | 290 | 33.1 | 8.76 | 0.6540 | 0.0221 | 7.2784 | 0.2082 | 0.0812 | 0.0017 |
21LBS27-1-20 | 297 | 42.6 | 6.96 | 0.6070 | 0.0081 | 5.7573 | 0.1128 | 0.0688 | 0.0010 |
21LBS27-1-21 | 533 | 78.0 | 6.84 | 0.4375 | 0.0068 | 2.2837 | 0.0281 | 0.0381 | 0.0004 |
21LBS27-1-22 | 298 | 36.4 | 8.20 | 0.6308 | 0.0083 | 5.6424 | 0.0961 | 0.0650 | 0.0010 |
21LBS27-1-23 | 193 | 34.8 | 5.55 | 0.6691 | 0.0156 | 7.6781 | 0.2354 | 0.0834 | 0.0020 |
21LBS27-1-24 | 358 | 50.6 | 7.07 | 0.6155 | 0.0077 | 5.6589 | 0.0994 | 0.0668 | 0.0010 |
21LBS27-1-25 | 372 | 36.7 | 10.16 | 0.6094 | 0.0056 | 5.2025 | 0.0411 | 0.0622 | 0.0005 |
21LBS27-1-26 | 210 | 37.6 | 5.58 | 0.5583 | 0.0084 | 4.4746 | 0.0954 | 0.0583 | 0.0011 |
21LBS27-1-27 | 356 | 47.2 | 7.56 | 0.5429 | 0.0094 | 3.7715 | 0.0532 | 0.0512 | 0.0007 |
21LBS27-1-28 | 275 | 42.1 | 6.53 | 0.6097 | 0.0094 | 5.3095 | 0.1513 | 0.0628 | 0.0013 |
21LBS27-1-29 | 297 | 30.8 | 9.64 | 0.6071 | 0.0108 | 4.9978 | 0.0711 | 0.0603 | 0.0008 |
Spot | La | Ce | Pr | Nd | Sm | Eu | Gd | Tb | Dy | Ho | Er | Tm | Yb | Lu | Ce/Ce * | Eu/Eu * |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
21LBS27-1-1 | 5956 | 16,565 | 2134 | 8535 | 1401 | 262.3 | 817.9 | 92.11 | 408.2 | 64.80 | 138.2 | 16.52 | 89.62 | 9.79 | 1.30 | 0.56 |
21LBS27-1-2 | 4871 | 14,135 | 1937 | 8332 | 1479 | 306.9 | 867.1 | 96.60 | 424.2 | 66.96 | 141.8 | 16.96 | 92.71 | 10.35 | 1.27 | 0.69 |
21LBS27-1-3 | 5395 | 15,888 | 2134 | 8898 | 1519 | 306.5 | 856.4 | 96.51 | 419.5 | 64.78 | 138.2 | 16.33 | 88.58 | 9.49 | 1.32 | 0.67 |
21LBS27-1-4 | 5948 | 13,558 | 1397 | 4818 | 654 | 168.9 | 382.4 | 43.63 | 202.3 | 35.35 | 88.7 | 12.34 | 77.81 | 9.69 | 1.33 | 1.07 |
21LBS27-1-5 | 5691 | 15,796 | 1921 | 7251 | 1162 | 248.6 | 695.5 | 79.59 | 378.4 | 62.16 | 144.1 | 19.35 | 116.05 | 14.61 | 1.37 | 0.72 |
21LBS27-1-6 | 6684 | 17,314 | 2048 | 7523 | 1148 | 247.5 | 674.3 | 77.54 | 354.5 | 58.16 | 132.0 | 16.39 | 92.80 | 10.14 | 1.32 | 0.74 |
21LBS27-1-7 | 5897 | 18,054 | 2519 | 10,673 | 1848 | 305.5 | 1068.5 | 116.23 | 500.8 | 76.48 | 160.9 | 18.23 | 95.23 | 10.61 | 1.32 | 0.44 |
21LBS27-1-8 | 5524 | 17,565 | 2518 | 11,231 | 2025 | 383.3 | 1180.6 | 129.13 | 545.4 | 81.28 | 165.3 | 18.56 | 96.36 | 10.08 | 1.33 | 0.57 |
21LBS27-1-9 | 6973 | 19,565 | 2526 | 9982 | 1638 | 330.6 | 965.8 | 108.82 | 488.0 | 75.74 | 164.3 | 19.20 | 102.68 | 10.72 | 1.31 | 0.65 |
21LBS27-1-10 | 5571 | 18,046 | 2601 | 11,342 | 2035 | 351.8 | 1220.1 | 135.84 | 587.8 | 88.89 | 184.7 | 21.35 | 109.61 | 11.50 | 1.35 | 0.47 |
21LBS27-1-11 | 6071 | 18,769 | 2654 | 11,503 | 2079 | 358.3 | 1218.3 | 132.62 | 567.3 | 85.03 | 175.4 | 20.01 | 105.58 | 11.26 | 1.31 | 0.47 |
21LBS27-1-12 | 5625 | 16,727 | 2330 | 9970 | 1722 | 307.9 | 988.5 | 107.82 | 463.7 | 69.50 | 144.2 | 16.56 | 86.57 | 9.54 | 1.28 | 0.52 |
21LBS27-1-13 | 5319 | 16,236 | 2237 | 9397 | 1607 | 305.1 | 923.0 | 101.02 | 440.4 | 67.27 | 138.2 | 16.03 | 87.58 | 9.26 | 1.33 | 0.59 |
21LBS27-1-14 | 5214 | 14,711 | 1832 | 7284 | 1169 | 237.4 | 700.4 | 84.03 | 381.0 | 63.05 | 137.2 | 16.66 | 91.71 | 9.86 | 1.36 | 0.64 |
21LBS27-1-15 | 5418 | 16,351 | 2304 | 9863 | 1724 | 300.4 | 1011.0 | 110.86 | 479.7 | 73.36 | 155.6 | 18.30 | 96.31 | 10.52 | 1.29 | 0.48 |
21LBS27-1-16 | 5230 | 14,564 | 1886 | 7604 | 1226 | 241.4 | 718.6 | 79.07 | 358.4 | 55.24 | 121.5 | 14.95 | 81.83 | 9.00 | 1.29 | 0.62 |
21LBS27-1-17 | 5534 | 17,946 | 2596 | 11,214 | 2040 | 344.5 | 1223.0 | 136.50 | 601.1 | 91.90 | 190.3 | 21.34 | 117.01 | 12.31 | 1.35 | 0.44 |
21LBS27-1-18 | 6879 | 17,443 | 2100 | 7900 | 1176 | 269.1 | 666.6 | 73.52 | 325.5 | 52.07 | 111.9 | 13.39 | 72.77 | 7.65 | 1.27 | 0.86 |
21LBS27-1-19 | 5608 | 16,755 | 2247 | 9276 | 1581 | 273.5 | 934.1 | 104.75 | 470.0 | 74.34 | 160.1 | 18.99 | 104.62 | 10.95 | 1.34 | 0.47 |
21LBS27-1-20 | 5280 | 12,899 | 1386 | 4513 | 565 | 148.7 | 315.9 | 37.28 | 177.0 | 30.93 | 75.9 | 10.34 | 63.26 | 7.47 | 1.37 | 1.16 |
21LBS27-1-21 | 6232 | 12,179 | 1116 | 3581 | 445 | 142.3 | 258.3 | 27.53 | 125.3 | 21.49 | 54.9 | 8.31 | 59.20 | 8.29 | 1.28 | 1.65 |
21LBS27-1-22 | 7140 | 19,360 | 2477 | 9628 | 1499 | 322.7 | 873.2 | 95.49 | 424.8 | 65.42 | 142.4 | 16.84 | 89.40 | 9.44 | 1.27 | 0.74 |
21LBS27-1-23 | 4745 | 13,646 | 1936 | 8470 | 1488 | 340.1 | 848.9 | 89.67 | 371.4 | 52.86 | 104.6 | 11.77 | 58.94 | 6.41 | 1.22 | 0.86 |
21LBS27-1-24 | 5050 | 15,153 | 2140 | 9323 | 1736 | 409.7 | 1020.0 | 111.21 | 482.6 | 71.66 | 147.6 | 17.40 | 91.28 | 9.23 | 1.28 | 0.89 |
21LBS27-1-25 | 5578 | 16,532 | 2310 | 10,104 | 1926 | 439.6 | 1149.4 | 125.76 | 541.6 | 81.36 | 168.9 | 19.52 | 101.30 | 10.21 | 1.27 | 0.82 |
21LBS27-1-26 | 4412 | 13,259 | 1880 | 8307 | 1496 | 328.3 | 868.5 | 92.92 | 391.8 | 57.23 | 113.6 | 12.77 | 66.95 | 6.95 | 1.27 | 0.78 |
21LBS27-1-27 | 5351 | 13,208 | 1535 | 5757 | 892 | 199.4 | 524.9 | 59.17 | 271.0 | 44.83 | 104.4 | 13.79 | 82.45 | 9.85 | 1.28 | 0.79 |
21LBS27-1-28 | 6132 | 17,146 | 2226 | 8984 | 1505 | 292.4 | 872.6 | 100.07 | 454.9 | 70.66 | 152.5 | 18.00 | 99.41 | 10.48 | 1.29 | 0.61 |
21LBS27-1-29 | 5351 | 16,414 | 2237 | 9492 | 1620 | 276.5 | 941.0 | 103.03 | 452.6 | 69.33 | 146.9 | 17.03 | 91.73 | 9.86 | 1.35 | 0.47 |
Sample No. | 21LBS27-1 | 21LBS27-2 | 21LBS27-3 | 21LBS27-4 | 21LBS27-5 | 21LBS28-1 | 21LBS28-2 | 21LBS28-3 | 21LBS29-1 | 21LBS29-2 | 21LBS29-3 | 21LBS29-4 | 21LBS30-1 | 21LBS30-2 | 21LBS30-3 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Rock Type | Hornblende Diorite | Hornblende Syenite Porphyry | Biotite Monzonite Porphyry | Aegirine Diorite porphyrite | |||||||||||
Major elements (wt. %) | |||||||||||||||
SiO2 | 54.96 | 55.24 | 54.49 | 53.36 | 54.30 | 66.9 | 67.9 | 63.8 | 67.3 | 66.1 | 67.3 | 67.6 | 56.9 | 61.9 | 62.4 |
Al2O3 | 10.51 | 10.73 | 10.24 | 11.20 | 10.43 | 14.8 | 14.1 | 14.8 | 16.4 | 17.5 | 16.8 | 16.6 | 14.1 | 14.1 | 12.4 |
Fe2O3 | 8.73 | 8.25 | 9.46 | 9.15 | 9.21 | 3.39 | 3.33 | 4.75 | 2.45 | 2.91 | 2.01 | 2.06 | 6.35 | 4.93 | 4.41 |
CaO | 3.3 | 3.69 | 4.17 | 4.90 | 4.57 | 1.96 | 1.72 | 3.13 | 0.57 | 1.23 | 0.59 | 0.61 | 5.45 | 4.14 | 3.55 |
MgO | 8.67 | 8.52 | 9.2 | 8.09 | 8.80 | 1.02 | 1.32 | 1.81 | 0.2 | 0.41 | 0.14 | 0.17 | 3.96 | 3.09 | 2.45 |
K2O | 2.12 | 1.56 | 1.78 | 2.05 | 1.40 | 3.48 | 3.63 | 3.18 | 4.55 | 4.01 | 4.83 | 4.6 | 4.86 | 4.1 | 4.14 |
Na2O | 2.72 | 3.19 | 1.67 | 2.60 | 2.83 | 6.48 | 5.66 | 5.58 | 6.29 | 6 | 5.98 | 6.26 | 3.91 | 4.88 | 5.12 |
FeO | 2.94 | 2.82 | 2.4 | 3.23 | 2.73 | 0.95 | 0.88 | 1.51 | 0.12 | 0.85 | 0.12 | 0.12 | 3.39 | 2.64 | 2.27 |
MnO | 0.11 | 0.12 | 0.12 | 0.12 | 0.12 | 0.06 | 0.06 | 0.09 | 0.02 | 0.07 | 0.04 | 0.01 | 0.12 | 0.1 | 0.15 |
TiO2 | 0.98 | 0.98 | 1 | 1.05 | 1.09 | 0.28 | 0.32 | 0.46 | 0.2 | 0.26 | 0.2 | 0.19 | 0.74 | 0.63 | 0.5 |
P2O5 | 0.32 | 0.33 | 0.28 | 0.34 | 0.38 | 0.26 | 0.33 | 0.53 | 0.08 | 0.11 | 0.06 | 0.08 | 0.73 | 0.62 | 0.47 |
LOI | 3.4 | 3.27 | 4.16 | 3.11 | 3.17 | 0.5 | 0.65 | 0.94 | 1 | 1.03 | 1.11 | 1.02 | 1.79 | 0.66 | 2.98 |
Total | 98.76 | 98.69 | 98.96 | 99.20 | 99.02 | 100.12 | 99.93 | 100.56 | 99.15 | 100.44 | 99.25 | 99.3 | 102.3 | 101.75 | 100.89 |
A/CNK | 0.82 | 0.79 | 0.84 | 0.73 | 0.72 | 0.82 | 0.86 | 0.81 | 1.01 | 1.06 | 1.04 | 1.01 | 0.65 | 0.7 | 0.64 |
A/NK | 1.55 | 1.55 | 2.19 | 1.72 | 1.69 | 1.03 | 1.07 | 1.17 | 1.07 | 1.23 | 1.12 | 1.09 | 1.21 | 1.13 | 0.96 |
Trace elements (ppm) | |||||||||||||||
Be | 1.26 | 1.12 | 1.06 | 0.98 | 1.12 | 2.96 | 2.17 | 3.04 | 2.91 | 2.37 | 3.15 | 2.49 | 3.56 | 3.49 | 7.25 |
Sc | 13 | 13.2 | 15.8 | 17.6 | 12.6 | 0.54 | 0.44 | 0.71 | 0.87 | 0.29 | 0.58 | 0.63 | 8.45 | 5.78 | 6.49 |
V | 179 | 175 | 198 | 202 | 185 | 53.8 | 68.8 | 106 | 38 | 52.7 | 32 | 30.7 | 143 | 132 | 104 |
Cr | 205 | 277 | 327 | 259 | 251 | 14.4 | 8.82 | 10.7 | 2.97 | 5.28 | 2.16 | 2.41 | 60.8 | 30.9 | 18.6 |
Co | 35.6 | 32.9 | 40.7 | 39.5 | 38.5 | 6.2 | 7.16 | 12.8 | 0.74 | 5.35 | 3.22 | 0.87 | 19.8 | 17.8 | 16.6 |
Ni | 262 | 247 | 339 | 298 | 295 | 15.2 | 8.03 | 10.1 | 1.38 | 3.32 | 2.7 | 2.04 | 39.2 | 19.2 | 15.7 |
Cu | 57.7 | 56.8 | 28.2 | 41.5 | 58.6 | 38.8 | 82.8 | 34.6 | 20.1 | 10.4 | 7.09 | 26.8 | 31.7 | 96.4 | 268 |
Zn | 119 | 75.1 | 82.9 | 88.2 | 114 | 41.8 | 64.5 | 102 | 81.4 | 103 | 93.7 | 79.6 | 145 | 138 | 203 |
Ga | 22.4 | 23.6 | 21 | 21.1 | 22.4 | 41.6 | 38.4 | 50.4 | 48 | 50.8 | 38.5 | 47.2 | 33.9 | 33.5 | 34 |
Rb | 63.6 | 46.7 | 50.4 | 67.2 | 39.7 | 82.2 | 92.8 | 89.3 | 134 | 97.5 | 132 | 125 | 154 | 117 | 175 |
Sr | 460 | 558 | 599 | 707 | 856 | 2234 | 2483 | 3216 | 1981 | 3350 | 2348 | 2262 | 2008 | 2499 | 1349 |
Y | 28.9 | 18.8 | 16.5 | 19 | 16.8 | 17.1 | 14.1 | 23.8 | 17.3 | 14.7 | 12 | 12.6 | 22.4 | 21.1 | 25.8 |
Zr | 210 | 176 | 167 | 163 | 170 | 210 | 173 | 356 | 162 | 124 | 188 | 150 | 346 | 443 | 298 |
Nb | 5.68 | 7.46 | 6.06 | 6.7 | 5.59 | 11.5 | 11.2 | 13.5 | 22.3 | 22.9 | 20.3 | 16.8 | 1.6 | 0.45 | 12.8 |
Cs | 0.52 | 0.33 | 0.5 | 0.44 | 0.29 | 0.39 | 0.47 | 1.22 | 0.99 | 0.93 | 0.85 | 0.91 | 4.55 | 1.97 | 2.59 |
Ba | 558 | 432 | 613 | 569 | 504 | 2586 | 3675 | 4328 | 4620 | 3818 | 6445 | 4598 | 2835 | 3107 | 2420 |
La | 32 | 40 | 31.7 | 36.5 | 30.7 | 265 | 220 | 230 | 201 | 364 | 73 | 212 | 168 | 160 | 197 |
Ce | 60.5 | 80.7 | 60.1 | 70.8 | 63.4 | 460 | 388 | 502 | 405 | 592 | 152 | 396 | 357 | 332 | 360 |
Pr | 8.1 | 9.82 | 7.69 | 8.94 | 7.9 | 47.8 | 40.9 | 53.4 | 42.6 | 67.8 | 17.8 | 40.4 | 42.1 | 38.5 | 39.9 |
Nd | 32.1 | 38.1 | 30 | 35.7 | 32 | 157 | 135 | 184 | 137 | 215 | 65.5 | 128 | 139 | 129 | 129 |
Sm | 6.51 | 6.57 | 5.3 | 6.57 | 5.79 | 17.6 | 15.9 | 22.6 | 16.2 | 23.4 | 8.56 | 13.8 | 19.1 | 17 | 16.7 |
Eu | 1.48 | 2.04 | 1.66 | 2.01 | 1.83 | 4.51 | 4.17 | 5.65 | 4.11 | 5.6 | 2.6 | 3.7 | 4.83 | 4.57 | 4.31 |
Gd | 7.19 | 6.37 | 4.96 | 6.22 | 5.49 | 12.7 | 10.9 | 15.1 | 10.8 | 14.5 | 5.92 | 9.22 | 13.6 | 12.2 | 12.7 |
Tb | 1.12 | 0.79 | 0.63 | 0.77 | 0.69 | 1.1 | 0.99 | 1.43 | 1.05 | 1.28 | 0.6 | 0.84 | 1.31 | 1.15 | 1.23 |
Dy | 6.49 | 4.47 | 3.6 | 4.55 | 3.99 | 4.53 | 3.97 | 6.05 | 4.36 | 4.79 | 2.7 | 3.39 | 5.51 | 5.13 | 5.53 |
Ho | 0.97 | 0.64 | 0.53 | 0.66 | 0.57 | 0.52 | 0.45 | 0.78 | 0.52 | 0.48 | 0.31 | 0.38 | 0.85 | 0.76 | 0.83 |
Er | 2.81 | 1.99 | 1.63 | 2.05 | 1.8 | 1.33 | 1.02 | 1.94 | 1.32 | 1.02 | 0.88 | 1.01 | 2 | 1.8 | 2.07 |
Tm | 0.27 | 0.19 | 0.15 | 0.2 | 0.16 | 0.07 | 0.04 | 0.14 | 0.09 | 0.04 | 0.05 | 0.06 | 0.26 | 0.22 | 0.24 |
Yb | 1.84 | 1.37 | 1.2 | 1.48 | 1.23 | 0.44 | 0.31 | 0.82 | 0.81 | 0.25 | 0.51 | 0.5 | 1.23 | 1.15 | 1.28 |
Lu | 0.18 | 0.15 | 0.12 | 0.17 | 0.12 | 0.02 | 0.01 | 0.06 | 0.07 | 0.01 | 0.03 | 0.04 | 0.21 | 0.18 | 0.18 |
Hf | 4.05 | 3.77 | 3.47 | 3.51 | 3.37 | 4.58 | 3.79 | 6.3 | 3.04 | 3.75 | 3.47 | 2.75 | 2.71 | 3.36 | 2.93 |
Ta | 0.29 | 0.42 | 0.35 | 0.37 | 0.32 | 0.14 | 0.2 | 0.29 | 0.7 | 0.75 | 0.49 | 0.43 | 0.44 | 0.43 | 0.37 |
Tl | 0.26 | 0.23 | 0.23 | 0.24 | 0.17 | 0.19 | 0.25 | 0.21 | 0.39 | 0.35 | 0.44 | 0.39 | 0.59 | 0.49 | 0.56 |
Pb | 8.38 | 8.24 | 3.88 | 3.14 | 5.39 | 13.7 | 18.4 | 28.8 | 80.2 | 42.9 | 41.5 | 93.5 | 38.7 | 34.8 | 74.3 |
Th | 4.41 | 4.01 | 3.79 | 3.5 | 2.87 | 7.43 | 8.55 | 8.15 | 11.1 | 13.9 | 5.84 | 6.98 | 17 | 30 | 25 |
U | 0.92 | 0.66 | 0.67 | 0.62 | 0.81 | 2.8 | 3.84 | 4.7 | 6.08 | 3.66 | 5.68 | 5.18 | 2.7 | 2.55 | 4.04 |
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Yang, Z.-Y.; Li, S.-S.; An, M.-G.; Zhi, C.-L.; Shang, Z.; Long, Z.-Y.; Geng, J.-Z.; Yu, H.-C.; Qiu, K.-F. Petrogenesis of Alkaline Complex of the Longbaoshan Rare Earth Element Deposit in the Luxi Block, North China Craton, China. Minerals 2022, 12, 1524. https://doi.org/10.3390/min12121524
Yang Z-Y, Li S-S, An M-G, Zhi C-L, Shang Z, Long Z-Y, Geng J-Z, Yu H-C, Qiu K-F. Petrogenesis of Alkaline Complex of the Longbaoshan Rare Earth Element Deposit in the Luxi Block, North China Craton, China. Minerals. 2022; 12(12):1524. https://doi.org/10.3390/min12121524
Chicago/Turabian StyleYang, Ze-Yu, Shan-Shan Li, Mao-Guo An, Cheng-Long Zhi, Zhen Shang, Zheng-Yu Long, Jian-Zhen Geng, Hao-Cheng Yu, and Kun-Feng Qiu. 2022. "Petrogenesis of Alkaline Complex of the Longbaoshan Rare Earth Element Deposit in the Luxi Block, North China Craton, China" Minerals 12, no. 12: 1524. https://doi.org/10.3390/min12121524