Research Article
Rare Earth Elements in Mineral Deposits: Speciation in Hydrothermal Fluids and Partitioning in Calcite
Table 1
Trace element compositions in calcite from natural carbonatite systems.
| ; deposit type | Element (ppm) | ā | La | Ce | Pr | Nd | Sm | Eu | Gd | Tb | Dy | Ho | Er | Tm | Yb | Lu |
| Bear Lodge1, WY; carbonatite | Hydrothermal | 1.22 | 9.66 | 3.55 | 36.97 | 58.22 | 32.25 | 126.66 | 30.98 | 185.55 | 31.72 | 65.97 | 6.46 | 27.36 | 2.71 | Bear Lodge1, WY; carbonatite | Hydrothermal | 2.82 | 14.78 | 4.47 | 38.16 | 53.78 | 34.67 | 130.40 | 32.05 | 209.75 | 36.91 | 80.54 | 8.71 | 32.45 | 2.77 | Bear Lodge1, WY; carbonatite | Hydrothermal | 7.44 | 37.78 | 9.30 | 68.10 | 53.41 | 24.98 | 88.25 | 16.78 | 96.66 | 16.43 | 39.46 | 5.15 | 33.76 | 4.45 | Bear Lodge1, WY; carbonatite | Magmatic | 609.20 | 725.65 | 69.95 | 197.35 | 21.92 | 4.72 | 9.61 | 0.87 | 2.75 | 0.34 | 0.53 | 0.05 | 0.18 | d.l. | Kerimasi2, Tanzania; carbonatite | Magmatic | 129.07 | 157.90 | 13.42 | 44.03 | 8.37 | 2.47 | 5.76 | 0.88 | 3.12 | 0.76 | 2.45 | 0.19 | 1.65 | d.l. | Kerimasi2, Tanzania; carbonatite | Magmatic | 132.98 | 128.15 | 15.00 | 55.63 | 8.31 | 2.35 | 8.56 | 0.64 | 5.33 | 0.97 | 3.41 | d.l. | 1.86 | 0.24 |
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References: 1Olinger (2012) [ 31]; 2Chakhmouradian et al. (2016) [ 32]; d.l. = below detection limit. |