Method for predicting weathering crust ion adsorption type rare earth deposit layer position through ancient phreatic water level
An ion-adsorption type, weathering shell technology, applied in the field of rare earth ore exploration, can solve the problems of leachate loss and unreasonable utilization, and achieve the effect of avoiding loopholes and efficient and reasonable utilization
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[0030] The samples come from the rock weathering crust of an ion-adsorption rare earth deposit in Meizhou City, Guangdong Province. In this example, the contents of Ce and rare earth elements in the samples at different depths of the weathering crust were calculated (Table 1), and the relative content of hematite-goethite ( Table 2), the paleo-phreatic level indicated by the sharp change of δCe, hematite-goethite is obtained, so that the rare earth elements are obviously enriched below the paleo-phreatic level.
[0031] Table 1
[0032] Depth (m) 0.1 0.7 1.7 3.5 4.5 6.4 8.8 10.5 12.7 δCe 2.6 3.7 2.5 4.3 1.0 0.7 0.9 0.6 0.2 REE 211 246 261 195 625 813 220 284 169 Depth (m) 15.0 18.8 20.6 21.6 25.3 27.4 30.0 33.5 35.1 δCe 0.5 0.2 0.9 0.6 0.5 1.1 0.9 0.7 0.8 REE 504 168 113 128 127 209 248 295 299 Depth (m) 39.4 41.4 43.4 45.0 48.0 49.5 58.6 69.0 78.3 δCe 0.8 0.9 0.9 0.9...
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