Elemental Geochemistry and Pb Isotopic Compositions of the Thick No. 7 Coal Seam in the Datun Mining Area, China
Abstract
:1. Introduction
2. Samples and Methods
2.1. Samples Collected
2.2. Experimental Methods
3. Results and Discussion
3.1. Mineralogy
3.2. Geochemical Features
3.2.1. Major Element Oxides
3.2.2. Trace Elements
3.2.3. Rare Earth Elements
3.3. Modes of Occurrence of Pb and Pb Isotopes
3.4. Pb Isotope Characteristics
4. Conclusions
- (1)
- The major minerals in the thick coal seam of the Datun mining area are clay minerals, calcite, quartz, and dolomite; SiO2 and Al2O3 are mainly in the form of clay minerals, and there is a good correlation between them. Fe is mainly in the form of pyrite, and Ca is mainly in the form of calcite;
- (2)
- The samples from Kongzhuang, Longdong, and Yaoqiao mines basically fall in the felsic source area, so it is considered that the sediment source in the study area is felsic source rock;
- (3)
- There are differences in the enrichment degree of trace elements between the Kongzhuang mine, Longdong mine, and Yaoqiao mine samples. Compared with the average values of elements in coal in the world, Li and W elements were found to be enriched as a whole. In particular, W was enriched in the Yaoqiao mine and highly enriched in Longdong mine samples. The distribution curve of rare earth elements in the three mines is inclined to the right overall, indicating the light rare earth enrichment type;
- (4)
- The lead in the coal samples from the Datun mining area mainly exists in pyrite, and there is little radioactive lead. There is a good correlation between 206Pb/207Pb and 208Pb/206Pb, indicating that the source of Pb in this area is relatively singular, mainly from the orogenic belt and crust–mantle mixed subduction zone, as well as some upper crust and mantle source areas.
Author Contributions
Funding
Data Availability Statement
Conflicts of Interest
References
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Mine | Sample | Mad | Ad | Vdaf | FCd | Std |
---|---|---|---|---|---|---|
Kongzhuang | KZ-C1 | 1.65 | 9.79 | 37.55 | 56.34 | 0.81 |
KZ-C2 | 2.72 | 24.24 | 42.50 | 43.56 | 1.67 | |
KZ-C3 | 2.63 | 32.76 | 44.74 | 37.16 | 1.93 | |
KZ-C4 | 1.80 | 6.80 | 39.29 | 56.58 | 0.57 | |
KZ-C5 | 1.58 | 7.86 | 38.11 | 57.02 | 0.59 | |
KZ-C6 | 1.68 | 7.28 | 36.92 | 58.48 | 0.49 | |
KZ-C7 | 1.57 | 9.00 | 38.19 | 56.24 | 0.45 | |
KZ-C8 | 1.44 | 9.59 | 38.87 | 55.27 | 0.49 | |
KZ-C9 | 1.60 | 13.74 | 36.07 | 55.14 | 0.41 | |
KZ-C10 | 1.81 | 6.74 | 35.97 | 59.71 | 0.51 | |
KZ-Y1 | 1.74 | 88.83 | 99.18 | 0.09 | 1.71 | |
Longdong | LD-C1 | 3.48 | 9.16 | 40.23 | 54.30 | 1.33 |
LD-C2 | 2.44 | 8.77 | 36.8 | 57.66 | 0.67 | |
LD-C3 | 2.66 | 11.14 | 38.15 | 54.96 | 0.62 | |
LD-C4 | 2.32 | 16.69 | 30.47 | 57.92 | 0.72 | |
LD-C5 | 2.26 | 12.18 | 38.80 | 53.74 | 0.61 | |
LD-C6 | 2.56 | 8.88 | 37.28 | 57.15 | 0.62 | |
LD-C7 | 2.50 | 14.23 | 31.39 | 58.85 | 0.62 | |
LD-C8 | 2.78 | 12.15 | 39.95 | 52.76 | 0.71 | |
LD-Y1 | 0.22 | 92.79 | 95.27 | 0.34 | 0.50 | |
Yaoqiao | YQ-C1 | 1.90 | 7.03 | 40.00 | 55.78 | 0.55 |
YQ-C2 | 2.02 | 6.53 | 34.85 | 60.89 | 0.53 | |
YQ-C3 | 1.91 | 6.30 | 34.98 | 60.92 | 0.51 | |
YQ-C4 | 2.17 | 7.20 | 38.18 | 57.38 | 0.55 | |
YQ-C5 | 1.80 | 6.52 | 39.49 | 56.57 | 0.53 | |
YQ-C6 | 2.04 | 9.94 | 35.80 | 57.82 | 0.43 | |
YQ-C7 | 1.92 | 9.54 | 35.48 | 58.36 | 0.58 | |
YQ-C8 | 2.08 | 7.88 | 39.27 | 55.94 | 0.71 | |
YQ-Y2 | 1.33 | 83.55 | 70.55 | 4.84 | 0.41 |
Mine | Sample | SiO2 | Al2O3 | Fe2O3 | MgO | CaO | Na2O | K2O | TiO2 | P2O5 | Loss on Ignition | FeO |
---|---|---|---|---|---|---|---|---|---|---|---|---|
Kongzhuang | KZ-C1 | 3.31 | 3.36 | 0.63 | 0.12 | 1.26 | 0.15 | 0.03 | 0.12 | 0.04 | 90.56 | 0.41 |
KZ-C2 | 13.93 | 11.63 | 1.72 | 0.18 | 0.75 | 0.13 | 0.19 | 0.26 | 0.02 | 71.13 | 0.73 | |
KZ-C3 | 16.51 | 13.53 | 2.39 | 0.17 | 0.72 | 0.12 | 0.25 | 0.26 | 0.03 | 65.95 | 0.93 | |
KZ-C4 | 2.72 | 2.45 | 0.39 | 0.08 | 0.69 | 0.10 | 0.02 | 0.03 | 0.01 | 93.36 | 0.31 | |
KZ-C5 | 3.00 | 2.72 | 0.35 | 0.08 | 0.61 | 0.09 | 0.01 | 0.03 | 0.01 | 92.82 | 0.29 | |
KZ-C6 | 5.11 | 4.05 | 0.43 | 0.11 | 0.64 | 0.10 | 0.02 | 0.27 | 0.02 | 89.17 | 0.25 | |
KZ-C7 | 4.91 | 3.06 | 0.54 | 0.10 | 3.76 | 0.08 | 0.03 | 0.28 | 0.01 | 87.16 | 0.20 | |
KZ-C8 | 2.41 | 2.02 | 0.31 | 0.09 | 0.91 | 0.08 | 0.02 | 0.04 | 0.01 | 94.02 | 0.26 | |
KZ-C9 | 6.26 | 5.18 | 0.38 | 0.07 | 1.53 | 0.08 | 0.04 | 0.18 | 0.01 | 86.12 | 0.29 | |
KZ-C10 | 6.65 | 5.46 | 0.24 | 0.08 | 0.58 | 0.06 | 0.03 | 0.09 | 0.01 | 86.42 | 0.20 | |
KZ-Y1 | 58.49 | 22.36 | 3.92 | 0.70 | 0.26 | 0.27 | 2.3 | 0.62 | 0.06 | 10.82 | 2.34 | |
Longdong | LD-C1 | 2.47 | 2.05 | 0.75 | 0.06 | 0.60 | 0.07 | 0.04 | 0.05 | 0.01 | 93.85 | 0.54 |
LD-C2 | 5.50 | 4.65 | 0.84 | 0.09 | 0.90 | 0.05 | 0.05 | 0.30 | 0.01 | 87.53 | 0.44 | |
LD-C3 | 2.47 | 2.09 | 0.60 | 0.15 | 3.43 | 0.04 | 0.03 | 0.11 | 0.01 | 90.93 | 0.35 | |
LD-C4 | 5.96 | 5.06 | 0.55 | 0.11 | 0.39 | 0.04 | 0.06 | 0.17 | 0.01 | 87.56 | 0.29 | |
LD-C5 | 8.48 | 6.61 | 0.80 | 0.11 | 0.94 | 0.06 | 0.09 | 0.31 | 0.02 | 82.31 | 0.49 | |
LD-C6 | 3.32 | 2.77 | 0.54 | 0.12 | 1.19 | 0.08 | 0.05 | 0.08 | 0.01 | 91.11 | 0.35 | |
LD-C7 | 3.35 | 2.71 | 0.43 | 0.14 | 2.90 | 0.05 | 0.03 | 0.10 | 0.01 | 89.77 | 0.31 | |
LD-C8 | 4.42 | 3.66 | 0.80 | 0.13 | 3.99 | 0.13 | 0.05 | 0.08 | 0.01 | 86.64 | 0.44 | |
LD-Y1 | 74.75 | 11.39 | 0.85 | 0.29 | 3.00 | 1.35 | 2.73 | 0.40 | 0.04 | 5.08 | 0.41 | |
Yaoqiao | YQ-C1 | 4.32 | 3.79 | 1.16 | 0.18 | 0.40 | 0.04 | 0.02 | 0.05 | 0.01 | 89.98 | 0.25 |
YQ-C2 | 3.26 | 2.90 | 0.35 | 0.06 | 0.14 | 0.08 | 0.02 | 0.05 | 0.01 | 93.01 | 0.25 | |
YQ-C3 | 5.11 | 4.53 | 0.36 | 0.06 | 0.11 | 0.10 | 0.02 | 0.06 | 0.01 | 89.58 | 0.30 | |
YQ-C4 | 3.99 | 3.88 | 0.44 | 0.15 | 0.46 | 0.22 | 0.02 | 0.04 | 0.01 | 90.01 | 0.25 | |
YQ-C5 | 2.75 | 2.48 | 0.65 | 0.18 | 1.32 | 0.09 | 0.02 | 0.04 | 0.02 | 92.32 | 0.31 | |
YQ-C6 | 4.18 | 3.6 | 0.39 | 0.06 | 0.25 | 0.13 | 0.02 | 0.08 | 0.02 | 91.25 | 0.32 | |
YQ-C7 | 5.32 | 4.65 | 0.51 | 0.10 | 1.52 | 0.07 | 0.02 | 0.16 | 0.02 | 87.54 | 0.34 | |
YQ-C8 | 9.14 | 7.64 | 0.80 | 0.11 | 0.50 | 0.10 | 0.07 | 0.82 | 0.02 | 80.67 | 0.34 | |
YQ-Y2 | 56.64 | 23.28 | 1.14 | 0.54 | 0.40 | 0.14 | 1.92 | 0.78 | 0.04 | 15.04 | 0.87 | |
Average in coal | KZ | 6.48 | 5.35 | 0.74 | 0.11 | 1.15 | 0.10 | 0.06 | 0.16 | 0.05 | / | 0.39 |
LD | 4.50 | 3.70 | 0.66 | 0.11 | 1.79 | 0.07 | 0.05 | 0.15 | 0.01 | / | 0.40 | |
YQ | 4.76 | 4.18 | 0.58 | 0.11 | 0.59 | 0.10 | 0.03 | 0.16 | 0.02 | / | 0.30 |
Sample | La | Ce | Pr | Nd | Sm | Eu | Gd | Tb | Dy | Y | Ho | Er | Tm | Yb | Lu |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
KZ-C1 | 35.8 | 56.7 | 6.95 | 27 | 4.47 | 0.886 | 4.37 | 0.67 | 3.5 | 20 | 0.668 | 1.81 | 0.247 | 1.51 | 0.256 |
KZ-C2 | 24.8 | 46.9 | 5.74 | 21.4 | 3.96 | 0.742 | 3.36 | 0.57 | 3.06 | 13.5 | 0.596 | 1.67 | 0.241 | 1.6 | 0.271 |
KZ-C3 | 28.9 | 47.2 | 5.45 | 19.4 | 3.29 | 0.582 | 2.89 | 0.487 | 2.69 | 11.6 | 0.52 | 1.49 | 0.209 | 1.44 | 0.241 |
KZ-C4 | 11.5 | 20.5 | 2.32 | 8.38 | 1.47 | 0.259 | 1.4 | 0.235 | 1.28 | 7.31 | 0.256 | 0.676 | 0.097 | 0.595 | 0.097 |
KZ-C5 | 13 | 21.9 | 2.34 | 8.01 | 1.36 | 0.239 | 1.28 | 0.206 | 1.07 | 5.6 | 0.203 | 0.541 | 0.074 | 0.468 | 0.074 |
KZ-C6 | 14.6 | 24.7 | 2.68 | 9.18 | 1.59 | 0.283 | 1.47 | 0.252 | 1.44 | 7.05 | 0.278 | 0.777 | 0.109 | 0.749 | 0.121 |
KZ-C7 | 13.6 | 23.2 | 2.58 | 9.05 | 1.5 | 0.263 | 1.43 | 0.243 | 1.31 | 7.01 | 0.26 | 0.75 | 0.105 | 0.726 | 0.12 |
KZ-C8 | 10 | 17.6 | 1.98 | 6.94 | 1.21 | 0.178 | 1.13 | 0.189 | 1.02 | 5.22 | 0.194 | 0.542 | 0.074 | 0.461 | 0.073 |
KZ-C9 | 15 | 26.1 | 2.87 | 9.74 | 1.73 | 0.245 | 1.55 | 0.268 | 1.49 | 6.83 | 0.276 | 0.771 | 0.108 | 0.717 | 0.106 |
KZ-C10 | 10.8 | 23 | 2.89 | 10.7 | 2.34 | 0.448 | 2.24 | 0.425 | 2.48 | 16.1 | 0.504 | 1.36 | 0.176 | 0.995 | 0.158 |
KZ-Y1 | 65.6 | 112 | 13.7 | 53.1 | 9.54 | 1.91 | 8.49 | 1.41 | 7.58 | 37.3 | 1.51 | 4.29 | 0.615 | 4.1 | 0.682 |
LD-C1 | 7.41 | 14.7 | 1.91 | 7.5 | 1.53 | 0.364 | 1.46 | 0.253 | 1.43 | 9.03 | 0.288 | 0.75 | 0.101 | 0.627 | 0.1 |
LD-C2 | 9.46 | 15.6 | 1.73 | 6.07 | 1.14 | 0.206 | 1.12 | 0.196 | 1.11 | 5.71 | 0.209 | 0.566 | 0.075 | 0.463 | 0.075 |
LD-C3 | 11.2 | 18.8 | 2.08 | 7.22 | 1.36 | 0.242 | 1.32 | 0.239 | 1.4 | 6.73 | 0.263 | 0.7 | 0.1 | 0.624 | 0.097 |
LD-C4 | 10.5 | 17 | 1.87 | 6.54 | 1.14 | 0.211 | 1.12 | 0.189 | 1.04 | 5.07 | 0.196 | 0.543 | 0.075 | 0.491 | 0.077 |
LD-C5 | 11.7 | 20.3 | 2.29 | 8.2 | 1.48 | 0.289 | 1.44 | 0.252 | 1.38 | 7.22 | 0.267 | 0.736 | 0.108 | 0.681 | 0.108 |
LD-C6 | 21.4 | 37.9 | 4.16 | 14 | 2.49 | 0.492 | 2.5 | 0.4 | 2.23 | 11.2 | 0.424 | 1.13 | 0.163 | 0.975 | 0.148 |
LD-C7 | 11.3 | 19.9 | 2.24 | 7.83 | 1.42 | 0.29 | 1.38 | 0.24 | 1.33 | 6.92 | 0.268 | 0.711 | 0.105 | 0.657 | 0.099 |
LD-C8 | 17.2 | 29.2 | 3.3 | 11.7 | 2.02 | 0.386 | 1.89 | 0.307 | 1.7 | 9.47 | 0.334 | 0.965 | 0.144 | 0.938 | 0.151 |
LD-Y1 | 28.4 | 51.4 | 5.72 | 21 | 3.47 | 0.949 | 3.32 | 0.523 | 2.77 | 14.4 | 0.533 | 1.42 | 0.202 | 1.23 | 0.202 |
YQ-C1 | 8.71 | 18 | 2.2 | 8.47 | 1.76 | 0.383 | 1.69 | 0.309 | 1.85 | 11.1 | 0.386 | 1.09 | 0.162 | 1 | 0.161 |
YQ-C2 | 11.8 | 22.1 | 2.53 | 8.96 | 1.67 | 0.319 | 1.56 | 0.271 | 1.49 | 8.52 | 0.29 | 0.777 | 0.11 | 0.678 | 0.105 |
YQ-C3 | 10.6 | 17.8 | 2.04 | 7.12 | 1.33 | 0.231 | 1.23 | 0.218 | 1.22 | 6.61 | 0.236 | 0.635 | 0.093 | 0.602 | 0.086 |
YQ-C4 | 11 | 18.3 | 2.08 | 7.29 | 1.34 | 0.224 | 1.28 | 0.217 | 1.19 | 6.38 | 0.23 | 0.646 | 0.094 | 0.567 | 0.085 |
YQ-C5 | 7.81 | 13.6 | 1.58 | 5.6 | 1.04 | 0.181 | 1 | 0.177 | 0.997 | 5.51 | 0.2 | 0.522 | 0.085 | 0.5 | 0.079 |
YQ-C6 | 8.63 | 15.1 | 1.67 | 5.77 | 0.995 | 0.167 | 0.957 | 0.161 | 0.928 | 4.87 | 0.181 | 0.501 | 0.079 | 0.479 | 0.073 |
YQ-C7 | 8.82 | 14.4 | 1.56 | 5.25 | 0.941 | 0.17 | 0.902 | 0.158 | 0.896 | 4.39 | 0.173 | 0.475 | 0.072 | 0.463 | 0.072 |
YQ-C8 | 20.7 | 34.2 | 3.44 | 10.9 | 1.74 | 0.282 | 1.69 | 0.253 | 1.4 | 6.61 | 0.264 | 0.725 | 0.106 | 0.69 | 0.099 |
YQ-Y2 | 56 | 104 | 12.6 | 48.1 | 8.35 | 1.78 | 7.1 | 1.08 | 5.67 | 25.2 | 1.07 | 3.02 | 0.435 | 2.84 | 0.458 |
Mine | Sample | LaN | SmN | GdN | LuN | LaN/SmN | LaN/LuN | GdN/LuN |
---|---|---|---|---|---|---|---|---|
Kongzhuang | KZ-7-C1 | 151.05 | 29.22 | 21.27 | 10.08 | 5.17 | 14.99 | 2.11 |
KZ-7-C2 | 104.64 | 25.88 | 16.35 | 10.67 | 4.04 | 9.81 | 1.53 | |
KZ-7-C3 | 121.94 | 21.50 | 14.06 | 9.49 | 5.67 | 12.85 | 1.48 | |
KZ-7-C4 | 48.52 | 9.61 | 6.81 | 3.82 | 5.05 | 12.71 | 1.78 | |
KZ-7-C5 | 54.85 | 8.89 | 6.23 | 2.91 | 6.17 | 18.83 | 2.14 | |
KZ-7-C6 | 61.60 | 10.39 | 7.15 | 4.76 | 5.93 | 12.93 | 1.50 | |
KZ-7-C7 | 57.38 | 9.80 | 6.96 | 4.72 | 5.85 | 12.15 | 1.47 | |
KZ-7-C8 | 42.19 | 7.91 | 5.50 | 2.87 | 5.34 | 14.68 | 1.91 | |
KZ-7-C9 | 63.29 | 11.31 | 7.54 | 4.17 | 5.60 | 15.17 | 1.81 | |
KZ-7-C10 | 45.57 | 15.29 | 10.90 | 6.22 | 2.98 | 7.33 | 1.75 | |
KZ-D-Y1 | 276.79 | 62.35 | 41.31 | 26.85 | 4.44 | 10.31 | 1.54 | |
Longdong | LD-7-C1 | 31.27 | 10.00 | 7.10 | 3.94 | 3.13 | 7.94 | 1.80 |
LD-7-C2 | 39.92 | 7.45 | 5.45 | 2.95 | 5.36 | 13.52 | 1.85 | |
LD-7-C3 | 47.26 | 8.89 | 6.42 | 3.82 | 5.32 | 12.37 | 1.68 | |
LD-7-C4 | 44.30 | 7.45 | 5.45 | 3.03 | 5.95 | 14.61 | 1.80 | |
LD-7-C5 | 49.37 | 9.67 | 7.01 | 4.25 | 5.10 | 11.61 | 1.65 | |
LD-7-C6 | 90.30 | 16.27 | 12.17 | 5.83 | 5.55 | 15.50 | 2.09 | |
LD-7-C7 | 47.68 | 9.28 | 6.72 | 3.90 | 5.14 | 12.23 | 1.72 | |
LD-7-C8 | 72.57 | 13.20 | 9.20 | 5.94 | 5.50 | 12.21 | 1.55 | |
LD-D-Y1 | 119.83 | 22.68 | 16.16 | 7.95 | 5.28 | 15.07 | 2.03 | |
Yaoqiao | YQ-7-C1 | 36.75 | 11.50 | 8.22 | 6.34 | 3.19 | 5.80 | 1.30 |
YQ-7-C2 | 49.79 | 10.92 | 7.59 | 4.13 | 4.56 | 12.04 | 1.84 | |
YQ-7-C3 | 44.73 | 8.69 | 5.99 | 3.39 | 5.15 | 13.21 | 1.77 | |
YQ-7-C4 | 46.41 | 8.76 | 6.23 | 3.35 | 5.30 | 13.87 | 1.86 | |
YQ-7-C5 | 32.95 | 6.80 | 4.87 | 3.11 | 4.85 | 10.60 | 1.56 | |
YQ-7-C6 | 36.41 | 6.50 | 4.66 | 2.87 | 5.60 | 12.67 | 1.62 | |
YQ-7-C7 | 37.22 | 6.15 | 4.39 | 2.83 | 6.05 | 13.13 | 1.55 | |
YQ-7-C8 | 87.34 | 11.37 | 8.22 | 3.90 | 7.68 | 22.41 | 2.11 | |
YQ-D-Y2 | 236.29 | 54.58 | 34.55 | 18.03 | 4.33 | 13.10 | 1.92 |
Mine | Sample | 208Pb/204Pb | Std err | 207Pb/204Pb | Std err | 206Pb/204Pb | Std err | Δβ | Δγ |
---|---|---|---|---|---|---|---|---|---|
Kongzhuang | KZ-C1 | 38.435 | 0.005 | 15.604 | 0.002 | 18.496 | 0.002 | 18.604 | 35.481 |
KZ-C2 | 37.979 | 0.009 | 15.523 | 0.003 | 18.217 | 0.004 | 13.316 | 23.196 | |
KZ-C3 | 38.226 | 0.007 | 15.567 | 0.003 | 17.882 | 0.004 | 16.189 | 29.850 | |
KZ-C4 | 37.767 | 0.007 | 15.457 | 0.003 | 17.73 | 0.003 | 9.008 | 17.484 | |
KZ-C5 | 38.299 | 0.012 | 15.487 | 0.004 | 18.065 | 0.005 | 10.966 | 31.817 | |
KZ-C6 | 38.386 | 0.007 | 15.548 | 0.003 | 18.322 | 0.003 | 14.948 | 34.161 | |
KZ-C7 | 39.655 | 0.007 | 15.629 | 0.003 | 18.867 | 0.003 | 20.236 | 68.349 | |
KZ-C8 | 38.049 | 0.007 | 15.488 | 0.002 | 18.039 | 0.003 | 11.032 | 25.082 | |
KZ-C9 | 37.731 | 0.005 | 15.345 | 0.002 | 17.315 | 0.002 | 1.697 | 16.514 | |
KZ-C10 | 37.768 | 0.005 | 15.351 | 0.002 | 17.374 | 0.002 | 2.088 | 17.511 | |
KZ-Y1 | 38.391 | 0.006 | 15.513 | 0.002 | 18.116 | 0.003 | 12.664 | 34.296 | |
Longdong | LD-C1 | 38.281 | 0.013 | 15.583 | 0.005 | 18.26 | 0.006 | 17.233 | 31.332 |
LD-C2 | 38.764 | 0.015 | 15.559 | 0.004 | 18.526 | 0.005 | 15.666 | 44.345 | |
LD-C3 | 38.089 | 0.003 | 15.518 | 0.002 | 18.351 | 0.002 | 12.990 | 26.159 | |
LD-C4 | 38.347 | 0.004 | 15.508 | 0.002 | 18.15 | 0.002 | 12.337 | 33.110 | |
LD-C5 | 38.423 | 0.005 | 15.43 | 0.002 | 17.621 | 0.002 | 7.245 | 35.158 | |
LD-C6 | 38.607 | 0.007 | 15.547 | 0.002 | 18.469 | 0.003 | 14.883 | 40.115 | |
LD-C7 | 38.754 | 0.005 | 15.566 | 0.002 | 18.338 | 0.002 | 16.123 | 44.075 | |
LD-C8 | 38.271 | 0.003 | 15.56 | 0.001 | 18.35 | 0.001 | 15.732 | 31.063 | |
LD-Y1 | 37.602 | 0.005 | 15.438 | 0.002 | 17.251 | 0.002 | 7.768 | 13.039 | |
Yaoqiao | YQ-C1 | 38.165 | 0.008 | 15.545 | 0.003 | 18.256 | 0.003 | 14.752 | 28.207 |
YQ-C2 | 38.678 | 0.004 | 15.583 | 0.002 | 18.579 | 0.002 | 17.233 | 42.028 | |
YQ-C3 | 38.686 | 0.003 | 15.59 | 0.001 | 18.56 | 0.001 | 17.690 | 42.243 | |
YQ-C4 | 38.34 | 0.005 | 15.545 | 0.002 | 18.221 | 0.003 | 14.752 | 32.922 | |
YQ-C5 | 38.127 | 0.005 | 15.539 | 0.002 | 18.083 | 0.002 | 14.361 | 27.183 | |
YQ-C6 | 37.835 | 0.007 | 15.463 | 0.003 | 17.752 | 0.003 | 9.400 | 19.316 | |
YQ-C7 | 37.776 | 0.003 | 15.459 | 0.001 | 17.705 | 0.001 | 9.138 | 17.727 | |
YQ-C8 | 38.942 | 0.005 | 15.411 | 0.002 | 17.642 | 0.002 | 6.005 | 49.140 | |
YQ-Y2 | 38.339 | 0.009 | 15.574 | 0.003 | 17.834 | 0.003 | 16.645 | 32.895 |
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Meng, N.; Xiao, Q.; Li, W. Elemental Geochemistry and Pb Isotopic Compositions of the Thick No. 7 Coal Seam in the Datun Mining Area, China. Minerals 2024, 14, 848. https://doi.org/10.3390/min14080848
Meng N, Xiao Q, Li W. Elemental Geochemistry and Pb Isotopic Compositions of the Thick No. 7 Coal Seam in the Datun Mining Area, China. Minerals. 2024; 14(8):848. https://doi.org/10.3390/min14080848
Chicago/Turabian StyleMeng, Na, Qianlong Xiao, and Wu Li. 2024. "Elemental Geochemistry and Pb Isotopic Compositions of the Thick No. 7 Coal Seam in the Datun Mining Area, China" Minerals 14, no. 8: 848. https://doi.org/10.3390/min14080848