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Outline
The Qingshankou Formation is one of the primary ore-bearing layers for uranium deposits in the Songliao Basin, where the techno-metallurgical characteristics of the ores directly determine the feasibility of in-situ leaching uranium. This study focuses on sandstone type ores in the Qingshankou Formation, employing petrographic analysis, scanning electron microscopy, energy-dispersive spectroscopy, and electron probe microanalysis to conduct techno-metallurgical research, systematically revealing the occurrence patterns of uranium minerals. The results indicate that uranium minerals in fine sandstones of the Qingshankou Formation are predominantly uraninite and pitchblende, primarily distributed along the edges of clastic particles, which facilitates contact between uranium minerals and leaching solutions. Additionally, the pores in fine sandstones are mainly intergranular, promoting uniform diffusion of leaching agents. In contrast, uranium minerals in mud breccia are primarily uraninite, mainly distributed within the mud breccia, which hinders contact between leaching solutions and uranium minerals, increasing leaching difficulty. The study suggests that the Qingshankou Formation of a uranium deposit in the Songliao Basin has the potential to become an ideal mining horizon in the region.
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| 科 Family | 属数 Number of genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) | 属 Genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) |
|---|---|---|---|---|---|---|
| 鹅膏菌科Amanitaceae | 2 | 11 | 5.26 | 鹅膏菌属 Amanita | 10 | 4.78 |
| 小菇科 Mycenaceae | 2 | 12 | 5.74 | 丝盖伞属 Inocybe | 5 | 2.39 |
| 多孔菌科 Polyporaceae | 8 | 14 | 6.70 | 蜡蘑属 Laccaria | 5 | 2.39 |
| 红菇科 Russulaceae | 3 | 23 | 11.00 | 小皮伞属 Marasmius | 6 | 2.87 |
| 小菇属 Mycena | 11 | 5.26 | ||||
| 光柄菇属 Pluteus | 5 | 2.39 | ||||
| 红菇属 Russula | 17 | 8.13 | ||||
| 栓菌属 Trametes | 5 | 2.39 |
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