Chronolgy and Geochemistry of the Sijiaying Iron Deposit in Eastern Hebei Province, North China Craton: Implications for the Genesis of High-Grade Iron Ores
Abstract
:1. Introduction
2. Geological Setting
2.1. Regional Geology
2.2. Deposit Geology
2.2.1. Associated Rocks
2.2.2. Geometry of Orebodies
2.2.3. Ore Mineralogy
3. Sample and Analytical Techniques
3.1. Sampling
3.1.1. Quartz-Magnetite BIFs
3.1.2. Wall Rock
3.2. Analytical Methods
3.2.1. Whole-Rock Geochemistry
3.2.2. Zircon U–Pb Geochronology
4. Geochemical Results
4.1. Iron Ores
4.2. Wall Rock
4.2.1. Biotite–Leptynite
4.2.2. Chlorite–Sericite Schist
4.3. LA–ICP–MS Zircon U–Pb Dating
5. Discussion
5.1. Stages of Iron Formation
5.1.1. Dark-CL Ancient Magmatic Zircons
5.1.2. Magmatic Zircons Showing Oscillatory Zoning
5.1.3. Dark-CL Recrystallization Front
5.1.4. Bright-CL Resorption Edge
5.1.5. Timing of Deposition
5.2. Depositional Conditions of BIF
5.3. Genesis of High-Grade Iron Ores
5.4. Genetic Model of Ore Deposits
6. Conclusions
- (1)
- The Sijiaying BIF is the source of ore-forming materials provided via submarine volcanic hydrothermal solution, which was mineralized in an anoxic paleo-ocean.
- (2)
- There are two types of high-grade iron ores in the deposit: primitive sedimentary and hydrothermally altered iron ores. Primitive sedimentary high-grade iron ores are of the same mineralization age as BIFs, while hydrothermally altered high-grade iron ores were formed later than BIFs.
- (3)
- The biotite–leptynite that is closely related to the orebody was formed at 2547 ± 6 Ma, which represents the main mineralization age of the iron formation. After mineralization, it underwent regional metamorphism (~2500 Ma) and migmatization (2407 ± 170 Ma). Migmatization is the process that most likely provided a hydrothermal solution to alter iron orebodies and improve ore grades.
Author Contributions
Funding
Acknowledgments
Conflicts of Interest
References
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Sample Type | N | Sample Name | Location | Coordinates | Deth (m) | BIF Facies | Texture | Major Mineral Assemblage | |
---|---|---|---|---|---|---|---|---|---|
East | North | ||||||||
BIF (Open Pit) | 1 | SJY20-5-1 | Near Prospecting Line 16 | 118.751825 | 39.681657 | −187 | Oxide | Black quartz bands | Magnetite and quartz, a little chlorite |
2 | SJY20-6-1 | Near Prospecting Line 16 | 118.752249 | 39.679825 | −217 | Oxide | Black and white quartz bands | Magnetite and quartz | |
3 | SJY20-7-2 | Near Prospecting Line 16 | 118.751478 | 39.681492 | −189 | Oxide | Medium coarse-grained bands cut by green alternating veins | Magnetite, quartz, chlorite, and pyrite | |
4 | SJY20-8-6 | Near Prospecting Line 16 | 118.753249 | 39.674220 | −112 | Oxide | Fine quartz bands | Magnetite and quartz | |
5 | SJY20-9-4 | Near Prospecting Line 16 | 118.750482 | 39.681629 | −164 | Oxide | Fine and little quartz bands | Magnetite and quartz | |
6 | SJY20-9-5 | Near Prospecting Line 16 | 118.750482 | 39.681629 | −164 | Oxide | Banded gray–brown, crosscutting veins | Magnetite and quartz | |
7 | SJY20-10-5 | Near Prospecting Line 16 | 118.751900 | 39.681886 | −167 | Oxide | Banded green alternating bands | Magnetite, quartz, and chlorite | |
8 | SJY20-11-1 | Near Prospecting Line 16 | 118.755412 | 39.675196 | −124 | Oxide | Fine black–grey alternating bands | Magnetite and quartz | |
Sample Type | N | Sample Name | Location | Coordinates | Deth(m) | Sampling Site | Texture | Major Mineral Assemblage | |
East | North | ||||||||
Biotite leptynite | 1 | SJY20-7-4 | Near Prospecting Line 16 | 118.751478 | 39.681492 | −189 | The wall rock of the roof of ore body III | Fine-grained flake-like granoblastic structure, as well as a parallel granular structure | Biotite, quartz, plagioclase, and a small amount of magnetite |
2 | SJY20-8-1 | Near Prospecting Line 16 | 118.753249 | 39.674220 | −112 | The wall rock of the floor of orebody III | Biotite, quartz, plagioclase, and a small amount of magnetite | ||
3 | SJY20-8-3 | Near Prospecting Line 16 | 118.753249 | 39.674220 | −112 | The wall rock of the floor of orebody III | Biotite, quartz, plagioclase, and a small amount of magnetite | ||
4 | SJY20-10-2 | Near Prospecting Line 16 | 118.751900 | 39.681886 | −167 | The wall rock of the roof of orebody III | Biotite, quartz, plagioclase, and a small amount of magnetite | ||
5 | SJY20-10-7 | Near Prospecting Line 16 | 118.751900 | 39.681886 | −167 | The wall rock of the floor of orebody III | Biotite, quartz, plagioclase, and a small amount of magnetite | ||
6 | SJY20-11-5 | Near Prospecting Line 16 | 118.755412 | 39.675196 | −124 | The wall rock on the north side of the orebody | Biotite, quartz, plagioclase, and pyrite | ||
Chlorite–sericite schist | 7 | SJY20-9-2 | Near Prospecting Line 16 | 118.750482 | 39.681629 | −164 | The wall rock on the north side of the orebody | Scaly granular crystalline structure; schistose structure | Feldspar, quartz, biotite, sericite, and chlorite |
8 | SJY20-13-1 | Near Prospecting Line 16 | 118.753480 | 39.687973 | −186 | Near the orebody in the northern mining area | |||
9 | SJY20-13-2 | Near Prospecting Line 16 | 118.753480 | 39.687973 | −186 | ||||
10 | SJY20-13-3 | Near Prospecting Line 16 | 118.753480 | 39.687973 | −186 |
Sample Name | SJY20-5-1 | YS-2 | SJY-2-1 | SJY-ZK601-591. 3 | SJY20-7-2 | SJY20-8-6 | SJY20-6-1 | SJY20-9-4 | SJY20-9-5 | SJY20-10-5 | SJY20-11-1 | SJY-19 | SJY-ZK602-717. 2 | SJY-ZK602-747 | SJY-ZK602-750. 5 | SJY-ZK602-778 | SJY-ZK602-789. 7 | SJY-ZK602-794. 7 | SJY-ZK602-805. 5 | SJY-ZK602-809 | SJY-ZK602-822 | SJY-ZK602-797 | SJY-ZK602-735. 5 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Lithology | Normal-grade magnetite–quartzite | Normal-grade magnetite–quartzite | Normal-grade magnetite–quartzite | Normal-grade magnetite–quartzite | Normal-grade magnetite–quartzite | Normal-grade magnetite–quartzite | Normal-grade magnetite–quartzite | Normal-grade magnetite–quartzite | Normal-grade magnetite–quartzite | Normal-grade magnetite–quartzite | High-grade magnetite–quartzite | High-grade magnetite–quartzite | High-grade magnetite–quartzite | High-grade magnetite–quartzite | High-grade magnetite–quartzite | High-grade magnetite–quartzite | High-grade magnetite–quartzite | High-grade magnetite–quartzite | High-grade magnetite–quartzite | High-grade magnetite–quartzite | High-grade magnetite–quartzite | High-grade magnetite–quartzite | High-grade magnetite–quartzite |
References | This study | Data from Xu et al., 2014 [31] | Data from Xu et al., 2014 [31] | Data from Xu et al., 2014 [31] | This study | This study | This study | This study | This study | This study | This study | Data from Xu et al., 2014 [31] | Data from Xu et al., 2014 [31] | Data from Xu et al., 2014 [31] | Data from Xu et al., 2014 [31] | Data from Xu et al., 2014 [31] | Data from Xu et al., 2014 [31] | Data from Xu et al., 2014 [31] | Data from Xu et al., 2014 [31] | Data from Xu et al., 2014 [31] | Data from Xu et al., 2014 [31] | Data from Xu et al., 2014 [31] | Data from Xu et al., 2014 [31] |
wt.% | |||||||||||||||||||||||
SiO2 | 55.30 | 64.51 | 58.69 | 53.28 | 51.02 | 50.61 | 48.77 | 48.68 | 51.58 | 51.56 | 47.18 | 6.51 | 15.77 | 16.59 | 17.18 | 16.42 | 6.59 | 17.57 | 11.22 | 4.25 | 6.09 | 25.63 | 15.95 |
Al2O3 | 2.09 | <0.10 | <0.10 | <0.01 | 0.90 | 1.68 | 0.69 | 1.46 | 0.36 | 0.51 | 0.18 | 1.31 | 3.43 | <0.01 | <0.01 | <0.01 | 1.84 | 0.94 | <0.01 | 1.55 | 0.32 | 2.21 | 0.38 |
CaO | 1.97 | 0.37 | 0.97 | 3.22 | 2.68 | 0.92 | 2.13 | 0.86 | 0.90 | 0.97 | 0.88 | 0.44 | 2.39 | 4.1 | 3.08 | 3.43 | 2.93 | 2.17 | 3.28 | 5.42 | 5.86 | 2.17 | 5.01 |
TFe2O3 | 34.84 | 33.91 | 38.12 | 39.68 | 39.18 | 43.24 | 44.58 | 46.67 | 46.53 | 45.23 | 51.17 | 85.05 | 72.7 | 75.23 | 77.57 | 75.74 | 81.63 | 74.25 | 80.61 | 78.08 | 77.96 | 65.58 | 74.09 |
FeO | 8.59 | 1.5 | 2 | 13.1 | 7.36 | 8.77 | 11.68 | 8.98 | 6.79 | 10.53 | 12.90 | 2.4 | 24.8 | 23.1 | 20.7 | 23.8 | 26 | 23.6 | 24.2 | 24.1 | 23.9 | 20.7 | 23.2 |
K2O | 1.30 | 0.06 | 0.07 | <0.01 | 0.05 | 1.22 | 0.52 | 0.68 | 0.02 | 0.15 | 0.01 | 0.03 | 1 | <0.01 | <0.01 | 0.02 | 0.02 | 0.54 | 0.05 | 0.03 | 0.02 | 0.04 | 0.01 |
MgO | 1.41 | 0.43 | 0.9 | 1.92 | 2.01 | 1.48 | 1.95 | 0.80 | 0.38 | 1.26 | 1.79 | 2.71 | 3.97 | 3.51 | 1.74 | 3.57 | 4.28 | 3.62 | 3.15 | 4.72 | 3.98 | 3.7 | 3.99 |
MnO | 0.12 | 0.04 | 0.03 | 0.16 | 0.09 | 0.11 | 0.14 | 0.06 | 0.09 | 0.10 | 0.13 | 0.04 | 0.18 | 0.18 | 0.09 | 0.18 | 0.2 | 0.22 | 0.16 | 0.25 | 0.22 | 0.18 | 0.17 |
Na2O | <0.01 | 0.14 | 0.19 | 0.08 | <0.01 | 0.03 | 0.05 | <0.01 | <0.01 | 0.01 | 0.03 | 0.09 | 0.19 | 0.14 | 0.11 | 0.18 | 0.11 | 0.09 | 0.14 | 0.11 | 0.19 | 0.2 | 0.17 |
P2O5 | 0.11 | 0.14 | 0.12 | 0.15 | 0.13 | 0.17 | 0.17 | 0.21 | 0.23 | 0.12 | 0.05 | 0.13 | 0.29 | 0.16 | 0.19 | 0.31 | 0.44 | 0.25 | 0.25 | 0.12 | 0.34 | 0.23 | 0.19 |
TiO2 | 0.05 | 0.02 | 0.07 | 0.02 | 0.04 | 0.05 | 0.05 | 0.05 | 0.02 | 0.03 | 0.02 | 0.05 | 0.07 | 0.09 | 0.01 | 0.09 | 0.08 | 0.07 | 0.05 | 0.04 | 0.12 | 0.06 | 0.03 |
LOI | 2.37 | 1.47 | 1.41 | 1.7 | 2.42 | 0.04 | 0.39 | 0.03 | 0.03 | −0.53 | −1.37 | 3.37 | <0.10 | <0.10 | <0.10 | <0.10 | 1.74 | 0.26 | 1.93 | 5.15 | 4.62 | <0.10 | <0.10 |
CO2 | 3.16 | - | - | - | 4.61 | 0.17 | 1.88 | 0.34 | 0.17 | 0.17 | 0.17 | - | - | - | - | - | - | - | - | - | - | - | - |
H2O+ | 1.02 | - | - | - | 0.68 | 0.60 | 0.42 | 0.64 | 0.36 | 0.42 | 0.28 | - | - | - | - | - | - | - | - | - | - | - | - |
ppm | |||||||||||||||||||||||
Li | 14.06 | 19.30 | 11.60 | 5.44 | 14.53 | 13.78 | 11.84 | 8.16 | 5.41 | 12.00 | 1.63 | 95.30 | 26.10 | 3.69 | 4.44 | 4.19 | 13.50 | 35.40 | 31.70 | 11.50 | 20.40 | 19.80 | 5.58 |
Be | 0.76 | 0.48 | 0.70 | 0.70 | 0.60 | 0.29 | 0.67 | 0.34 | 0.20 | 0.44 | 0.39 | 1.78 | 1,41 | 1.71 | 0.51 | 1.70 | 0.29 | 0.80 | 0.94 | 0.38 | 0.43 | 0.44 | 1.04 |
V | 6.51 | 8.95 | 8.01 | 6.94 | 22.48 | 16.51 | 10.22 | 12.42 | 5.70 | 13.71 | 2.63 | 68.30 | 61.40 | 30.10 | 22.20 | 24.80 | 46.00 | 40.10 | 26.50 | 43.90 | 48.10 | 36.40 | 33.80 |
Ni | 2.04 | 8.15 | 2.91 | 9.08 | 5.37 | 5.37 | 2.34 | 3.05 | 1.13 | 1.38 | 1.25 | 6.93 | 12.50 | 12.20 | 3.07 | 5.15 | 6.24 | 10.40 | 6.51 | 3.71 | 9.70 | 3.75 | 9.39 |
Co | 0.63 | 3.24 | 0.83 | 3.91 | 1.43 | 0.88 | 0.85 | 1.28 | 0.31 | 0.69 | 0.18 | 3.97 | 3.55 | 2.93 | 1.48 | 1.90 | 2.67 | 4.25 | 1.68 | 1.11 | 3.86 | 1.56 | 2.53 |
Cr | 9.42 | 7.95 | 4.07 | 13.60 | 26.34 | 13.86 | 7.92 | 11.03 | 6.09 | 6.83 | 10.69 | 7.05 | 16.50 | 2.97 | 2.90 | 12.50 | 13.30 | 16.00 | 14.50 | 1.89 | 14.90 | 6.12 | 1.94 |
Sc | 1.66 | 1.68 | 0.89 | 0.46 | 2.28 | 2.47 | 1.90 | 2.55 | 1.33 | 1.37 | 0.50 | 1.86 | 2.14 | 0.84 | 0.28 | 1.77 | 1.54 | 1.89 | 0.59 | 1.01 | 1.82 | 1.49 | 0.54 |
Rb | 50.80 | 3.62 | 2.42 | 0.53 | 18.60 | 2.67 | 49.27 | 16.52 | 0.66 | 5.69 | 0.38 | 1.30 | 57.10 | 0.28 | 0.24 | 0.87 | 1.12 | 30.40 | 1.11 | 0.83 | 1.12 | 1.73 | 0.40 |
Ba | 127.93 | 45.50 | 5.61 | 30.40 | 63.95 | 6.51 | 100.29 | 258.07 | 4.63 | 11.18 | 6.89 | 28.00 | 79.40 | 8.47 | 3.12 | 7.71 | 9.04 | 111.00 | 25.10 | 6.42 | 5.81 | 9.55 | 3.61 |
Sr | 39.08 | 10.20 | 8.17 | 38.80 | 45.73 | 15.19 | 16.80 | 56.01 | 24.68 | 11.05 | 6.44 | 12.40 | 155.00 | 44.10 | 26.10 | 33.00 | 52.80 | 48.70 | 43.10 | 38.90 | 80.70 | 37.70 | 57.40 |
Th | 1.21 | 0.53 | 0.34 | 0.23 | 1.14 | 0.67 | 1.33 | 1.25 | 0.46 | 0.35 | 0.04 | 0.39 | 1.56 | 0.43 | 0.25 | 0.57 | 1.29 | 2.06 | 0.25 | 0.10 | 0.42 | 1.36 | 0.28 |
Zr | 18.59 | 7.37 | 9.26 | 1.19 | 23.06 | 6.61 | 18.84 | 18.99 | 3.65 | 5.49 | 0.68 | 10.90 | 1.27 | 0.82 | 0.66 | 1.89 | 0.50 | 1.46 | 0.91 | 0.24 | 1.46 | 0.56 | 0.54 |
Cu | 1.88 | 17.50 | 16.00 | 24.20 | 3.82 | 9.34 | 2.00 | 25.85 | 1.66 | 2.09 | 1.45 | 14.00 | 1.27 | 27.50 | 20.20 | 1.02 | 1.14 | 2.16 | 13.40 | 7.86 | 2.42 | 0.94 | 0.89 |
Zn | 12.66 | 12.10 | 5.62 | 43.90 | 9.94 | 7.47 | 25.43 | 6.50 | 10.43 | 9.58 | 4.34 | 29.20 | 32.10 | 24.90 | 20.10 | 19.60 | 32.60 | 24.40 | 35.50 | 16.80 | 15.90 | 22.90 | 15.10 |
Ga | 2.30 | 1.45 | 1.48 | 1.29 | 0.97 | 1.24 | 1.67 | 1.89 | 0.57 | 1.09 | 0.19 | 11.10 | 6.34 | 2.46 | 1.63 | 3.00 | 5.65 | 5.82 | 2.48 | 4.56 | 6.15 | 4.29 | 2.51 |
Nb | 1.15 | 0.38 | 0.28 | 0.28 | 0.78 | 0.41 | 0.48 | 1.01 | 0.23 | 0.47 | 0.10 | 0.27 | 1.22 | 0.38 | 0.48 | 0.59 | 0.49 | 1.62 | 0.99 | 0.62 | 0.48 | 0.60 | 0.63 |
Cs | 0.77 | 0.33 | 0.29 | 0.16 | 0.15 | 0.38 | 0.33 | 0.21 | 0.04 | 0.26 | 0.07 | 0.56 | 9.67 | 0.06 | 0.03 | 0.13 | 0.20 | 4.88 | 0.31 | 0.14 | 0.26 | 0.34 | 0.10 |
La | 3.22 | 2.64 | 4.63 | 3.45 | 12.00 | 10.41 | 6.63 | 20.90 | 13.36 | 4.76 | 1.68 | 34.00 | 12.70 | 5.35 | 3.02 | 5.90 | 8.37 | 15.90 | 3.69 | 3.89 | 12.10 | 6.79 | 4.62 |
Ce | 7.21 | 5.61 | 6.53 | 5.33 | 24.58 | 22.75 | 13.51 | 38.15 | 22.04 | 9.29 | 2.86 | 23.50 | 25.10 | 9.57 | 5.40 | 13.10 | 16.60 | 29.00 | 6.23 | 6.32 | 24.10 | 12.50 | 7.73 |
Pr | 0.80 | 0.65 | 0.70 | 0.67 | 2.74 | 2.16 | 1.46 | 3.75 | 2.10 | 1.00 | 0.34 | 1.83 | 2.89 | 1.11 | 0.63 | 1.73 | 1.96 | 3.32 | 0.71 | 0.72 | 2.98 | 1.46 | 0.89 |
Nd | 3.22 | 2.88 | 2.90 | 2.36 | 10.57 | 8.12 | 5.58 | 13.50 | 8.03 | 4.03 | 1.53 | 6.33 | 11.80 | 4.45 | 2.30 | 7.60 | 7.60 | 11.90 | 3.04 | 3.21 | 11.60 | 5.92 | 3.72 |
Sm | 0.78 | 0.67 | 0.55 | 0.48 | 1.89 | 1.45 | 1.03 | 2.21 | 1.34 | 0.78 | 0.29 | 1.09 | 2.03 | 0.76 | 0.38 | 1.75 | 1.51 | 2.03 | 0.67 | 0.54 | 2.12 | 1.18 | 0.87 |
Eu | 0.22 | 0.22 | 0.15 | 0.31 | 0.49 | 0.37 | 0.30 | 0.57 | 0.38 | 0.28 | 0.18 | 0.40 | 0.51 | 0.30 | 0.18 | 0.39 | 0.53 | 0.59 | 0.26 | 0.17 | 0.65 | 0.28 | 0.27 |
Gd | 0.94 | 0.85 | 0.74 | 0.60 | 1.69 | 1.34 | 1.13 | 2.00 | 1.40 | 0.86 | 0.38 | 1.71 | 1.86 | 0.71 | 0.47 | 1.58 | 1.60 | 1.82 | 0.69 | 0.83 | 2.02 | 1.18 | 0.87 |
Tb | 0.15 | 0.16 | 0.12 | 0.09 | 0.23 | 0.18 | 0.16 | 0.25 | 0.18 | 0.12 | 0.05 | 0.27 | 0.33 | 0.15 | 0.09 | 0.30 | 0.28 | 0.33 | 0.14 | 0.11 | 0.32 | 0.17 | 0.17 |
Dy | 0.97 | 0.90 | 0.64 | 0.62 | 1.22 | 1.02 | 1.02 | 1.27 | 1.00 | 0.80 | 0.37 | 1.60 | 2.06 | 0.72 | 0.55 | 1.99 | 1.69 | 1.93 | 0.87 | 0.74 | 1.72 | 1.22 | 1.00 |
Y | 7.55 | 5.86 | 4.03 | 6.51 | 8.66 | 6.81 | 8.38 | 8.49 | 8.19 | 6.41 | 6.41 | 11.60 | 14.10 | 7.05 | 4.94 | 13.70 | 12.70 | 12.90 | 8.19 | 9.27 | 12.00 | 9.75 | 8.95 |
Ho | 0.20 | 0.17 | 0.11 | 0.16 | 0.23 | 0.20 | 0.21 | 0.24 | 0.20 | 0.17 | 0.09 | 0.29 | 0.44 | 0.18 | 0.13 | 0.39 | 0.36 | 0.37 | 0.22 | 0.21 | 0.35 | 0.23 | 0.20 |
Er | 0.65 | 0.54 | 0.36 | 0.43 | 0.72 | 0.64 | 0.71 | 0.78 | 0.66 | 0.55 | 0.29 | 0.83 | 1.33 | 0.50 | 0.40 | 1.20 | 1.08 | 1.21 | 0.67 | 0.65 | 0.98 | 0.78 | 0.67 |
Tm | 0.09 | 0.08 | 0.05 | 0.07 | 0.09 | 0.08 | 0.10 | 0.10 | 0.08 | 0.08 | 0.04 | 0.13 | 0.21 | 0.08 | 0.07 | 0.22 | 0.15 | 0.19 | 0.10 | 0.12 | 0.13 | 0.14 | 0.10 |
Yb | 0.60 | 0.53 | 0.31 | 0.50 | 0.58 | 0.56 | 0.70 | 0.67 | 0.55 | 0.52 | 0.28 | 0.86 | 1.19 | 0.46 | 0.49 | 1.41 | 1.03 | 1.28 | 0.60 | 0.85 | 0.90 | 0.82 | 0.70 |
Lu | 0.09 | 0.08 | 0.05 | 0.08 | 0.09 | 0.08 | 0.11 | 0.10 | 0.08 | 0.08 | 0.04 | 0.13 | 0.18 | 0.07 | 0.09 | 0.21 | 0.17 | 0.23 | 0.10 | 0.15 | 0.15 | 0.13 | 0.12 |
Hf | 0.54 | 0.20 | 0.08 | 0.06 | 0.51 | 0.20 | 0.55 | 0.52 | 0.12 | 0.15 | 0.03 | 0.20 | 0.10 | 0.05 | 0.03 | 0.15 | 0.02 | 0.09 | 0.04 | 0.01 | 0.07 | 0.03 | 0.04 |
Ta | 0.12 | 0.03 | 0.03 | 0.03 | 0.04 | 0.04 | 0.06 | 0.07 | 0.02 | 0.04 | 0.01 | 0.15 | 0.01 | 0.00 | 0.02 | 0.01 | 0.01 | 0.01 | 0.00 | 0.00 | 0.04 | 0.01 | - |
Pb | 2.72 | 7.21 | 19.50 | 4.15 | 5.64 | 2.19 | 5.31 | 2.99 | 4.24 | 1.12 | 4.76 | 8.05 | 1.55 | 0.90 | 0.53 | 0.77 | 1.06 | 2.95 | 3.49 | 1.50 | 1.04 | 1.24 | 0.80 |
U | 0.83 | 0.79 | 0.63 | 0.21 | 0.47 | 1.85 | 0.50 | 0.99 | 0.86 | 0.28 | 0.07 | 2.29 | 0.72 | 0.18 | 0.14 | 0.28 | 0.41 | 0.72 | 0.22 | 0.13 | 0.14 | 0.37 | 0.10 |
ΣREE | 19.13 | 15.98 | 17.84 | 15.15 | 57.11 | 49.38 | 32.66 | 84.49 | 51.40 | 23.33 | 8.41 | 72.97 | 62.63 | 24.41 | 14.20 | 37.77 | 42.93 | 70.10 | 17.99 | 18.51 | 60.12 | 32.80 | 21.93 |
LREE | 15.46 | 12.67 | 15.46 | 12.60 | 52.28 | 45.27 | 28.52 | 79.08 | 47.25 | 20.14 | 6.87 | 67.15 | 55.03 | 21.54 | 11.91 | 30.47 | 36.57 | 62.74 | 14.60 | 14.85 | 53.55 | 28.13 | 18.10 |
HREE | 3.67 | 3.31 | 2.38 | 2.55 | 4.83 | 4.11 | 4.14 | 5.41 | 4.15 | 3.19 | 1.54 | 5.82 | 7.60 | 2.87 | 2.29 | 7.30 | 6.36 | 7.36 | 3.39 | 3.66 | 6.57 | 4.67 | 3.83 |
LREE/HREE | 4.21 | 3.83 | 6.50 | 4.94 | 10.83 | 11.02 | 6.90 | 14.61 | 11.39 | 6.32 | 4.45 | 11.54 | 7.24 | 7.51 | 5.20 | 4.17 | 5.75 | 8.52 | 4.31 | 4.06 | 8.15 | 6.02 | 4.73 |
LaN/YbN | 0.37 | 0.34 | 1.01 | 0.47 | 1.40 | 1.25 | 0.64 | 2.10 | 1.64 | 0.61 | 0.41 | 2.67 | 0.72 | 0.79 | 0.42 | 0.28 | 0.55 | 0.84 | 0.42 | 0.31 | 0.91 | 0.56 | 0.45 |
δEu | 1.40 | 1.55 | 1.25 | 3.07 | 1.47 | 1.40 | 1.50 | 1.43 | 1.47 | 1.80 | 2.82 | 1.56 | 1.39 | 2.17 | 2.26 | 1.25 | 1.81 | 1.63 | 2.03 | 1.35 | 1.67 | 1.26 | 1.65 |
δCe | 1.08 | 1.03 | 0.87 | 0.84 | 1.03 | 1.16 | 1.05 | 1.04 | 1.00 | 1.03 | 0.91 | 0.72 | 1.00 | 0.95 | 0.94 | 0.99 | 0.99 | 0.96 | 0.93 | 0.91 | 0.97 | 0.96 | 0.92 |
Y/Ho | 37.99 | 34.47 | 36.64 | 40.69 | 38.29 | 34.08 | 39.45 | 35.22 | 40.35 | 37.87 | 74.28 | 40.00 | 32.05 | 39.17 | 38.00 | 35.13 | 35.28 | 34.86 | 37.23 | 44.14 | 34.29 | 42.39 | 44.75 |
REY | 26.68 | 21.84 | 21.87 | 21.66 | 65.76 | 56.18 | 41.04 | 92.98 | 59.59 | 29.74 | 14.82 | 84.57 | 76.73 | 31.46 | 19.14 | 51.47 | 55.63 | 83 | 26.18 | 27.78 | 72.12 | 42.55 | 30.88 |
Sample Name | SJY20-10-2 | SJY20-10-7 | SJY20-7-4 | SJY20-8-1 | SJY20-8-3 | SJY20-11-5 | SJY20-13-1 | SJY20-13-2 | SJY20-13-3 | SJY20-9-2 |
---|---|---|---|---|---|---|---|---|---|---|
Lithology | Biotite leptynite | Biotite leptynite | Biotite leptynite | Biotite leptynite | Biotite leptynite | Biotite leptynite | chlorite–sericite schist | chlorite–sericite schist | chlorite–sericite schist | chlorite–sericite schist |
location | On the roof of the main orebody | On the floor of the main orebody | On the roof of the main orebody | On the floor of the main orebody | On the roof of the main orebody | In the north of the main orebody | On the roof of the main orebody | On the roof of the main orebody | On the floor of the main orebody | On the floor of the main orebody |
SiO2 (%) | 66.29 | 64.94 | 65.77 | 67.20 | 60.44 | 56.14 | 48.20 | 47.79 | 48.50 | 47.43 |
Al2O3 (%) | 15.45 | 14.59 | 13.79 | 14.65 | 16.06 | 17.11 | 10.42 | 10.61 | 9.82 | 10.10 |
CaO (%) | 2.02 | 3.16 | 1.44 | 1.85 | 2.09 | 5.81 | 6.48 | 7.11 | 7.60 | 6.71 |
TFe2O3 (%) | 5.01 | 6.37 | 5.55 | 5.30 | 8.57 | 6.98 | 12.60 | 13.04 | 13.54 | 12.35 |
FeO (%) | 3.48 | 4.06 | 3.92 | 3.77 | 6.72 | 3.70 | 9.09 | 9.59 | 9.30 | 8.51 |
K2O (%) | 3.21 | 3.50 | 3.68 | 4.15 | 4.24 | 2.74 | 1.82 | 1.48 | 1.00 | 1.32 |
MgO (%) | 2.52 | 3.00 | 3.38 | 2.67 | 3.52 | 3.64 | 14.95 | 14.84 | 14.76 | 15.32 |
MnO (%) | 0.06 | 0.08 | 0.07 | 0.07 | 0.09 | 0.09 | 0.14 | 0.16 | 0.17 | 0.17 |
Na2O (%) | 3.92 | 2.87 | 3.66 | 2.43 | 2.71 | 4.41 | 1.32 | 1.36 | 1.60 | 1.49 |
P2O5 (%) | 0.14 | 0.16 | 0.16 | 0.16 | 0.18 | 0.35 | 0.19 | 0.13 | 0.16 | 0.17 |
TiO2 (%) | 0.42 | 0.46 | 0.45 | 0.42 | 0.59 | 0.66 | 1.40 | 1.30 | 1.31 | 1.30 |
CO2 (%) | 0.26 | 0.43 | 0.34 | 0.17 | 0.43 | 0.85 | 0.34 | 0.85 | 0.77 | 0.43 |
H2O+ (%) | 1.00 | 1.24 | 1.70 | 1.66 | 1.32 | 1.22 | 2.56 | 1.78 | 1.22 | 3.54 |
LOI (%) | 0.82 | 1.22 | 1.61 | 1.06 | 1.06 | 1.67 | 1.80 | 1.54 | 1.03 | 3.03 |
ppm | ||||||||||
Li | 25.69 | 41.56 | 32.49 | 41.68 | 44.31 | 19.72 | 72.58 | 35.53 | 11.93 | 58.72 |
Be | 1.52 | 1.86 | 2.03 | 1.72 | 1.77 | 1.36 | 0.84 | 0.73 | 0.70 | 0.84 |
V | 101.68 | 139.24 | 154.20 | 128.10 | 161.03 | 124.82 | 794.61 | 816.18 | 784.90 | 822.67 |
Ni | 41.90 | 50.93 | 60.10 | 45.90 | 59.23 | 36.26 | 488.21 | 552.93 | 564.63 | 541.39 |
Co | 14.86 | 15.21 | 20.44 | 16.07 | 19.02 | 19.34 | 63.72 | 70.79 | 64.43 | 62.77 |
Cr | 100.38 | 131.12 | 163.47 | 123.00 | 130.44 | 34.68 | 1540.58 | 1620.43 | 1552.27 | 1635.78 |
Sc | 10.64 | 13.76 | 12.95 | 11.48 | 14.96 | 11.36 | 32.55 | 30.53 | 28.29 | 29.08 |
Rb | 97.99 | 141.58 | 122.32 | 129.12 | 144.53 | 74.03 | 89.06 | 85.73 | 51.68 | 43.09 |
Ba | 1216.48 | 478.82 | 848.13 | 720.52 | 869.64 | 989.54 | 408.16 | 363.40 | 269.37 | 251.45 |
Sr | 358.08 | 321.43 | 366.22 | 262.73 | 275.38 | 8.59 | 286.70 | 252.84 | 273.97 | 157.65 |
Th | 7.22 | 8.30 | 8.21 | 6.94 | 7.81 | 3.34 | 1.52 | 1.41 | 1.51 | 1.40 |
Zr | 137.29 | 158.52 | 156.02 | 119.85 | 138.33 | 153.70 | 111.65 | 106.19 | 109.87 | 106.49 |
Cu | 40.15 | 26.70 | 28.20 | 36.73 | 25.22 | 24.24 | 88.62 | 95.18 | 101.21 | 90.07 |
Zn | 70.32 | 67.47 | 68.59 | 79.21 | 92.47 | 66.32 | 99.27 | 104.74 | 104.59 | 99.75 |
Ga | 18.82 | 17.65 | 18.52 | 17.92 | 20.62 | 19.94 | 16.30 | 15.68 | 14.55 | 15.31 |
Nb | 6.68 | 7.32 | 6.47 | 6.16 | 8.41 | 5.26 | 7.12 | 6.27 | 6.79 | 6.68 |
Cs | 5.36 | 8.88 | 5.91 | 6.40 | 9.28 | 7.76 | 6.92 | 7.80 | 4.51 | 3.40 |
La | 24.02 | 28.88 | 27.89 | 23.92 | 33.10 | 40.91 | 12.62 | 13.82 | 14.10 | 14.98 |
Ce | 49.65 | 57.83 | 56.41 | 49.12 | 66.21 | 79.43 | 28.40 | 31.05 | 31.96 | 33.68 |
Pr | 5.29 | 6.67 | 6.19 | 5.52 | 7.67 | 9.10 | 3.58 | 3.87 | 3.98 | 4.20 |
Nd | 18.94 | 21.86 | 21.25 | 19.32 | 26.25 | 29.85 | 15.16 | 15.38 | 15.93 | 16.83 |
Sm | 3.52 | 4.32 | 3.95 | 3.62 | 5.11 | 5.01 | 3.79 | 3.63 | 3.72 | 3.88 |
Eu | 0.91 | 1.09 | 0.90 | 0.95 | 1.24 | 1.35 | 1.10 | 1.10 | 1.13 | 1.16 |
Gd | 2.94 | 3.92 | 3.18 | 2.96 | 4.43 | 3.85 | 3.92 | 3.59 | 3.67 | 3.70 |
Tb | 0.41 | 0.62 | 0.45 | 0.43 | 0.63 | 0.51 | 0.56 | 0.53 | 0.54 | 0.54 |
Dy | 2.31 | 3.90 | 2.50 | 2.33 | 3.56 | 2.61 | 3.25 | 3.06 | 3.07 | 3.14 |
Y | 12.67 | 24.77 | 13.53 | 11.92 | 19.96 | 14.68 | 16.54 | 15.54 | 15.47 | 15.84 |
Ho | 0.42 | 0.75 | 0.47 | 0.42 | 0.65 | 0.47 | 0.57 | 0.53 | 0.54 | 0.54 |
Er | 1.33 | 2.45 | 1.52 | 1.33 | 2.05 | 1.48 | 1.61 | 1.52 | 1.54 | 1.56 |
Tm | 0.18 | 0.35 | 0.21 | 0.18 | 0.27 | 0.19 | 0.20 | 0.19 | 0.19 | 0.19 |
Yb | 1.31 | 2.54 | 1.50 | 1.32 | 1.91 | 1.31 | 1.33 | 1.25 | 1.27 | 1.27 |
Lu | 0.20 | 0.36 | 0.22 | 0.19 | 0.28 | 0.19 | 0.18 | 0.17 | 0.17 | 0.17 |
Hf | 3.70 | 4.00 | 4.13 | 3.27 | 3.74 | 3.69 | 2.94 | 2.76 | 2.83 | 2.76 |
Ta | 0.51 | 0.52 | 0.51 | 0.47 | 0.61 | 0.29 | 0.40 | 0.38 | 0.37 | 0.36 |
Pb | 41.13 | 20.34 | 7.86 | 23.21 | 16.04 | 10.63 | 3.59 | 3.51 | 3.95 | 3.21 |
U | 2.87 | 5.88 | 3.14 | 2.63 | 3.14 | 0.99 | 0.42 | 0.42 | 0.30 | 0.31 |
ΣREE | 111.45 | 135.54 | 126.63 | 111.60 | 153.35 | 176.26 | 76.27 | 79.70 | 81.79 | 85.86 |
LREE | 102.34 | 120.65 | 116.59 | 102.44 | 139.57 | 165.65 | 64.66 | 68.85 | 70.81 | 74.73 |
HREE | 9.10 | 14.89 | 10.04 | 9.16 | 13.77 | 10.61 | 11.61 | 10.86 | 10.97 | 11.13 |
LREE/HREE | 11.24 | 8.10 | 11.61 | 11.18 | 10.14 | 15.62 | 5.57 | 6.34 | 6.45 | 6.72 |
LaN/YbN | 13.12 | 8.16 | 13.36 | 13.03 | 12.45 | 22.33 | 6.82 | 7.92 | 7.97 | 8.45 |
δEu | 0.86 | 0.81 | 0.78 | 0.88 | 0.80 | 0.94 | 0.87 | 0.93 | 0.93 | 0.94 |
δCe | 1.08 | 1.02 | 1.05 | 1.05 | 1.02 | 1.01 | 1.04 | 1.04 | 1.05 | 1.04 |
SJY20-10-2 | ||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|
Sample Spot | U (ppm) | Th (ppm) | Th/U | 207Pb/206Pb | 1σ | 207Pb/235U | 1σ | 206Pb/238U | 1σ | 207Pb/206Pb Age | 1σ | Concordance |
spot.5 | 100.48 | 85.77 | 0.85 | 0.16839 | 0.00277 | 11.40404 | 0.24943 | 0.49332 | 0.00902 | 2538 | 29 | 98.29 |
spot.7 | 113.42 | 64.21 | 0.57 | 0.18293 | 0.00244 | 13.56690 | 0.21552 | 0.54285 | 0.00844 | 2674 | 22 | 95.76 |
spot. 9 | 148.36 | 99.69 | 0.67 | 0.16780 | 0.00249 | 11.17271 | 0.20038 | 0.48448 | 0.00652 | 2529 | 25 | 99.38 |
spot.10 | 170.42 | 75.61 | 0.44 | 0.17821 | 0.00218 | 11.10259 | 0.16094 | 0.45614 | 0.00667 | 2632 | 20 | 91.28 |
spot.11 | 104.48 | 50.29 | 0.48 | 0.16954 | 0.00228 | 10.58300 | 0.21966 | 0.45527 | 0.00842 | 2548 | 23 | 94.54 |
spot.15 | 146.69 | 103.41 | 0.70 | 0.17486 | 0.00220 | 12.27662 | 0.17982 | 0.51192 | 0.00653 | 2600 | 21 | 97.62 |
spot.20 | 30.05 | 20.18 | 0.67 | 0.16479 | 0.00395 | 11.18630 | 0.37162 | 0.49232 | 0.01210 | 2496 | 43 | 96.93 |
spot.21 | 71.09 | 51.31 | 0.72 | 0.17273 | 0.00291 | 11.46805 | 0.25801 | 0.48229 | 0.00734 | 2576 | 28 | 98.37 |
spot.22 | 148.14 | 59.24 | 0.40 | 0.16932 | 0.00250 | 11.60372 | 0.17145 | 0.49875 | 0.00627 | 2545 | 24 | 97.61 |
spot.23 | 141.25 | 95.59 | 0.68 | 0.16862 | 0.00231 | 11.33147 | 0.18201 | 0.48856 | 0.00650 | 2538 | 23 | 99.05 |
spot.26 | 116.25 | 86.05 | 0.74 | 0.16858 | 0.00242 | 11.76116 | 0.20508 | 0.50712 | 0.00816 | 2541 | 23 | 96.19 |
spot.27 | 202.65 | 117.31 | 0.58 | 0.17045 | 0.00205 | 11.45603 | 0.18549 | 0.48624 | 0.00651 | 2558 | 20 | 99.81 |
spot.29 | 179.83 | 103.37 | 0.57 | 0.16859 | 0.00196 | 11.26849 | 0.18203 | 0.48363 | 0.00742 | 2545 | 19 | 99.82 |
spot.30 | 92.22 | 74.61 | 0.81 | 0.18524 | 0.00260 | 12.97982 | 0.25334 | 0.50734 | 0.00735 | 2695 | 23 | 98.06 |
spot.31 | 104.87 | 62.26 | 0.59 | 0.18822 | 0.00270 | 13.72893 | 0.25148 | 0.52820 | 0.00732 | 2721 | 24 | 99.59 |
spot.32 | 200.45 | 167.65 | 0.84 | 0.16818 | 0.00216 | 10.60670 | 0.15158 | 0.45690 | 0.00598 | 2535 | 22 | 95.46 |
spot.33 | 110.65 | 78.35 | 0.71 | 0.17011 | 0.00264 | 12.07263 | 0.23783 | 0.51551 | 0.00799 | 2552 | 26 | 95.29 |
spot.34 | 186.76 | 114.67 | 0.61 | 0.16897 | 0.00224 | 10.75917 | 0.18412 | 0.45994 | 0.00679 | 2542 | 22 | 95.70 |
spot.36 | 125.71 | 101.53 | 0.81 | 0.17171 | 0.00204 | 11.32024 | 0.16965 | 0.47686 | 0.00639 | 2570 | 20 | 97.69 |
spot.38 | 127.25 | 123.25 | 0.97 | 0.17050 | 0.00241 | 11.16960 | 0.18439 | 0.47217 | 0.00579 | 2560 | 25 | 97.26 |
SJY20-10-6 | ||||||||||||
Sample Spot | U (ppm) | Th (ppm) | Th/U | 207Pb/206Pb | 1σ | 207Pb/235U | 1σ | 206Pb/238U | 1σ | 207Pb/206Pb Age | 1σ | Concordance |
spot.1 | 169.66 | 62.64 | 0.37 | 0.17313 | 0.00194 | 11.80878 | 0.19493 | 0.49050 | 0.00660 | 2590 | 20 | 99.43 |
spot.5 | 154.72 | 102.18 | 0.66 | 0.18240 | 0.00620 | 12.42505 | 0.60462 | 0.48626 | 0.00788 | 2650 | 47 | 96.14 |
spot.8 | 109.75 | 75.84 | 0.69 | 0.26216 | 0.00344 | 21.95509 | 0.64670 | 0.60526 | 0.01457 | 3255 | 21 | 93.06 |
spot.11 | 225.78 | 138.11 | 0.61 | 0.16732 | 0.00177 | 10.12759 | 0.19588 | 0.44003 | 0.00814 | 2527 | 17 | 92.36 |
spot.15 | 101.78 | 38.47 | 0.38 | 0.27032 | 0.00305 | 23.42254 | 0.43638 | 0.63013 | 0.01118 | 3304 | 18 | 94.97 |
spot.16 | 201.83 | 206.10 | 1.02 | 0.17553 | 0.00258 | 10.87217 | 0.23523 | 0.44984 | 0.01129 | 2609 | 26 | 90.82 |
spot.17 | 136.98 | 90.34 | 0.66 | 0.16971 | 0.00233 | 10.89254 | 0.24973 | 0.46676 | 0.00978 | 2553 | 22 | 96.47 |
spot.18 | 69.91 | 79.67 | 1.14 | 0.16708 | 0.00302 | 11.30578 | 0.24830 | 0.49281 | 0.00906 | 2519 | 31 | 97.65 |
spot.19 | 184.03 | 106.73 | 0.58 | 0.16993 | 0.00231 | 10.61513 | 0.25060 | 0.45311 | 0.00947 | 2555 | 24 | 93.79 |
spot.20 | 208.42 | 134.60 | 0.65 | 0.16837 | 0.00187 | 11.38212 | 0.13789 | 0.49057 | 0.00646 | 2541 | 18 | 98.80 |
spot.21 | 164.33 | 69.25 | 0.42 | 0.16995 | 0.00218 | 10.80472 | 0.30527 | 0.46181 | 0.01199 | 2552 | 21 | 95.48 |
spot.22 | 91.61 | 68.59 | 0.75 | 0.17290 | 0.00305 | 11.62594 | 0.23693 | 0.48776 | 0.00797 | 2577 | 29 | 99.27 |
spot.23 | 129.95 | 119.65 | 0.92 | 0.17055 | 0.00223 | 12.16836 | 0.18055 | 0.52032 | 0.00791 | 2561 | 21 | 94.92 |
spot.25 | 96.45 | 75.71 | 0.78 | 0.16627 | 0.00272 | 11.33251 | 0.19176 | 0.49717 | 0.00675 | 2517 | 27 | 96.80 |
spot.26 | 166.36 | 93.38 | 0.56 | 0.21818 | 0.00314 | 17.41854 | 0.40168 | 0.57895 | 0.00874 | 2961 | 24 | 99.33 |
spot.27 | 143.22 | 82.20 | 0.57 | 0.20610 | 0.00242 | 16.28574 | 0.24471 | 0.57423 | 0.00755 | 2874 | 18 | 98.31 |
spot.30 | 204.16 | 128.17 | 0.63 | 0.18278 | 0.00219 | 11.66460 | 0.21631 | 0.46400 | 0.00815 | 2674 | 20 | 91.07 |
spot.31 | 293.18 | 194.87 | 0.66 | 0.16668 | 0.00177 | 10.19212 | 0.28303 | 0.44407 | 0.01194 | 2521 | 18 | 93.31 |
SJY20-10-2 | ||||||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Test Points | Spot.7 | Spot. 9 | Spot.10 | Spot.15 | Spot.20 | Spot.21 | Spot.22 | Spot.23 | Spot.26 | Spot.27 | Spot.29 | Spot.30 | Spot.31 | Spot.32 | Spot.33 | Spot.34 | Spot.36 | Spot.38 |
La | 0.00 | 0.03 | 0.33 | 0.02 | 0.02 | 0.02 | 0.00 | 0.04 | 0.30 | 1.71 | 0.10 | 0.21 | 0.00 | 0.08 | 0.03 | 0.16 | 0.01 | 0.05 |
Ce | 11.61 | 13.94 | 27.93 | 11.80 | 5.42 | 9.71 | 9.82 | 11.87 | 16.98 | 20.98 | 14.49 | 10.03 | 8.97 | 23.53 | 17.63 | 29.18 | 32.28 | 26.90 |
Pr | 0.06 | 0.15 | 0.57 | 0.29 | 0.04 | 0.12 | 0.04 | 0.17 | 0.29 | 0.51 | 0.23 | 0.31 | 0.03 | 0.25 | 0.12 | 0.15 | 0.07 | 0.28 |
Nd | 1.03 | 1.78 | 4.41 | 3.98 | 0.52 | 1.71 | 0.64 | 2.01 | 3.25 | 2.14 | 2.17 | 3.85 | 0.79 | 3.21 | 1.79 | 1.32 | 1.31 | 3.90 |
Sm | 1.91 | 3.44 | 4.38 | 6.69 | 1.08 | 2.89 | 1.09 | 3.83 | 4.20 | 1.37 | 2.83 | 5.87 | 1.87 | 5.12 | 2.66 | 2.11 | 2.67 | 6.25 |
Eu | 0.51 | 1.43 | 1.49 | 1.58 | 0.64 | 1.32 | 0.31 | 0.84 | 1.06 | 0.54 | 0.97 | 1.81 | 0.37 | 1.59 | 1.24 | 0.99 | 0.41 | 1.68 |
Gd | 10.73 | 18.64 | 13.86 | 33.59 | 6.22 | 16.29 | 6.09 | 16.07 | 19.90 | 5.39 | 12.24 | 29.78 | 9.60 | 22.81 | 12.67 | 9.52 | 11.41 | 24.00 |
Tb | 3.32 | 6.13 | 4.65 | 10.16 | 2.10 | 5.67 | 2.05 | 5.08 | 6.25 | 1.58 | 3.87 | 9.66 | 3.60 | 6.82 | 3.93 | 3.35 | 3.47 | 6.55 |
Dy | 39.73 | 75.32 | 53.38 | 120.08 | 25.60 | 78.94 | 25.45 | 57.25 | 72.41 | 20.71 | 44.61 | 115.70 | 46.88 | 80.98 | 45.33 | 40.17 | 37.64 | 71.97 |
Ho | 14.88 | 28.42 | 19.60 | 42.83 | 10.23 | 32.62 | 9.81 | 20.15 | 26.42 | 8.04 | 17.00 | 41.20 | 18.69 | 29.16 | 16.67 | 15.75 | 12.95 | 23.96 |
Er | 71.43 | 140.87 | 98.86 | 194.13 | 53.30 | 171.50 | 49.31 | 95.51 | 128.59 | 42.63 | 84.78 | 192.17 | 98.40 | 140.73 | 86.85 | 78.61 | 58.39 | 110.88 |
Tm | 14.65 | 30.11 | 21.31 | 38.05 | 12.42 | 37.99 | 10.65 | 19.37 | 26.61 | 9.94 | 19.27 | 38.37 | 21.60 | 30.19 | 19.54 | 18.52 | 12.21 | 23.61 |
Yb | 143.17 | 292.96 | 221.19 | 342.23 | 130.90 | 382.85 | 107.51 | 178.23 | 251.31 | 107.46 | 192.42 | 355.84 | 217.25 | 291.69 | 203.58 | 190.69 | 115.17 | 225.97 |
Lu | 29.05 | 58.77 | 47.74 | 65.10 | 29.84 | 83.58 | 21.85 | 35.86 | 52.02 | 24.37 | 42.11 | 70.87 | 46.30 | 62.12 | 46.08 | 42.85 | 23.26 | 46.39 |
SJY20-10-6 | ||||||||||||||||||
Test points | spot.1 | spot.5 | spot.8 | spot.11 | spot.15 | spot.16 | spot.17 | spot.18 | spot.19 | spot.20 | spot.21 | spot.22 | spot.23 | spot.25 | spot.26 | spot.27 | spot.30 | spot.31 |
La | 0.39 | 0.19 | 0.28 | 0.08 | 0.09 | 0.11 | 0.14 | - | 28.31 | 0.03 | 0.05 | 0.13 | 0.00 | 0.00 | 0.05 | 0.25 | 1.16 | 4.85 |
Ce | 17.94 | 13.92 | 12.25 | 14.91 | 7.55 | 32.06 | 20.30 | 21.30 | 101.12 | 12.18 | 14.61 | 28.06 | 27.02 | 17.05 | 30.10 | 14.02 | 24.51 | 48.17 |
Pr | 0.44 | 0.23 | 0.50 | 0.26 | 0.21 | 0.31 | 0.26 | 0.15 | 10.68 | 0.18 | 0.10 | 0.28 | 0.14 | 0.12 | 0.32 | 0.54 | 1.18 | 2.84 |
Nd | 3.22 | 2.38 | 5.09 | 3.01 | 2.81 | 3.64 | 3.16 | 2.98 | 48.57 | 2.54 | 1.09 | 3.25 | 2.39 | 2.52 | 5.64 | 4.89 | 7.81 | 13.40 |
Sm | 3.95 | 3.80 | 5.79 | 4.58 | 3.44 | 4.98 | 4.40 | 4.28 | 12.31 | 4.60 | 1.16 | 3.90 | 4.40 | 4.76 | 9.70 | 6.04 | 6.80 | 7.25 |
Eu | 0.82 | 0.77 | 2.05 | 0.95 | 2.17 | 1.41 | 1.14 | 1.07 | 2.79 | 0.95 | 0.71 | 1.65 | 0.93 | 0.83 | 1.60 | 2.19 | 2.62 | 1.84 |
Gd | 17.80 | 12.48 | 18.33 | 20.03 | 11.64 | 18.67 | 20.80 | 18.70 | 17.86 | 21.65 | 4.91 | 14.19 | 19.72 | 21.26 | 27.84 | 28.82 | 19.24 | 20.77 |
Tb | 5.87 | 3.94 | 4.78 | 5.85 | 2.99 | 5.64 | 6.51 | 5.06 | 3.92 | 6.75 | 1.22 | 4.01 | 5.68 | 6.63 | 5.67 | 9.35 | 5.07 | 5.84 |
Dy | 74.12 | 44.94 | 54.40 | 68.50 | 29.92 | 61.37 | 82.21 | 56.20 | 42.26 | 74.11 | 14.20 | 45.93 | 68.22 | 78.03 | 46.22 | 115.19 | 57.17 | 68.84 |
Ho | 29.48 | 16.58 | 18.99 | 24.39 | 10.22 | 22.08 | 31.14 | 19.77 | 14.82 | 26.56 | 6.01 | 16.70 | 25.00 | 28.05 | 11.33 | 43.41 | 20.34 | 25.46 |
Er | 151.59 | 78.02 | 90.30 | 113.40 | 46.89 | 102.85 | 156.42 | 92.52 | 75.16 | 124.90 | 33.49 | 80.61 | 124.60 | 133.41 | 38.93 | 209.87 | 100.85 | 123.55 |
Tm | 33.29 | 16.23 | 18.98 | 23.21 | 9.77 | 21.25 | 33.10 | 19.19 | 16.33 | 26.10 | 8.33 | 17.04 | 26.11 | 26.96 | 5.89 | 42.85 | 22.37 | 26.82 |
Yb | 319.98 | 145.52 | 182.40 | 216.05 | 94.28 | 195.59 | 306.06 | 175.94 | 160.37 | 235.97 | 96.36 | 162.23 | 239.87 | 242.94 | 41.98 | 400.87 | 220.19 | 256.94 |
Lu | 70.26 | 29.59 | 39.12 | 43.13 | 20.55 | 39.13 | 64.42 | 35.93 | 34.54 | 48.58 | 24.47 | 34.55 | 49.86 | 47.89 | 7.33 | 82.87 | 47.68 | 52.58 |
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Gao, X.; Wang, D.; Huang, F.; Wang, Y.; Wang, C. Chronolgy and Geochemistry of the Sijiaying Iron Deposit in Eastern Hebei Province, North China Craton: Implications for the Genesis of High-Grade Iron Ores. Minerals 2023, 13, 775. https://doi.org/10.3390/min13060775
Gao X, Wang D, Huang F, Wang Y, Wang C. Chronolgy and Geochemistry of the Sijiaying Iron Deposit in Eastern Hebei Province, North China Craton: Implications for the Genesis of High-Grade Iron Ores. Minerals. 2023; 13(6):775. https://doi.org/10.3390/min13060775
Chicago/Turabian StyleGao, Xinyu, Denghong Wang, Fan Huang, Yan Wang, and Chenghui Wang. 2023. "Chronolgy and Geochemistry of the Sijiaying Iron Deposit in Eastern Hebei Province, North China Craton: Implications for the Genesis of High-Grade Iron Ores" Minerals 13, no. 6: 775. https://doi.org/10.3390/min13060775