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Interlayer oxidation zone sandstone type uranium deposit favorable target area space location method

An interlayer oxidation zone and spatial positioning technology, which is applied in the field of uranium mine geological exploration and geophysical detection, can solve the problems of inability to detect uranium mines directly, radioactive exploration has little effect, and achieve the effect of accurate spatial positioning

Inactive Publication Date: 2017-06-13
BEIJING RES INST OF URANIUM GEOLOGY
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Problems solved by technology

In the detection of deep uranium deposits, radioactive exploration has little effect, and conventional geophysical methods cannot directly detect uranium deposits

Method used

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  • Interlayer oxidation zone sandstone type uranium deposit favorable target area space location method
  • Interlayer oxidation zone sandstone type uranium deposit favorable target area space location method
  • Interlayer oxidation zone sandstone type uranium deposit favorable target area space location method

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Embodiment Construction

[0025] A spatial positioning method for a favorable target area of ​​a sandstone-type uranium deposit in an interlayer oxidation zone according to the present invention will be described in detail below in conjunction with the accompanying drawings and examples.

[0026] According to the sandstone-type uranium mineralization process, the precipitation and enrichment of uranium is mainly due to the redox reaction, which makes hexavalent uranium be reduced to tetravalent uranium. At the same time, the ferromagnetic minerals contained in the formation also undergo redox reactions. In the redox transition zone, ferric iron is gradually reduced to divalent iron oxide, which then combines with hematite to form a magnet. Ore or sulfidation to form pyrrhotite, etc., so that the overall magnetic properties in the redox transition zone are enhanced. In addition, the occurrence carrier of sandstone-type uranium deposits is medium-fine sandstone. In sedimentary basins, sandstone and mudst...

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Abstract

The invention belongs to the technical fields of uranium prospecting and geophysical exploration, particularly to an interlayer oxidation zone sandstone type uranium deposit favorable target area space location method. The interlayer oxidation zone sandstone type uranium deposit favorable target area space location method comprises the following steps of in key working areas, determining favorable metallogenic sections through telluric electromagnetic sounding; for the favorable metallogenic sections, outlining a redox transitional zone range through high-accuracy ground magnetic survey scanning; outlining the front line of a redox zone; primarily determining a favorable metallogenic area, performing electromagnetic measurement and fine sand body identification to outline target sand bodies in a longitudinal direction; according to the outlined redox transitional zone range and the longitudinal distribution of the target sand bodies, outlining a favorable metallogenic target area. The interlayer oxidation zone sandstone type uranium deposit favorable target area space location method solves the technical problem that the prior art cannot achieve accurate space location of uranium deposit, and by combining with the redox transitional zone range and the longitudinal distribution of the target sand bodies, can achieve accurate space location of interlayer oxidation zone sandstone type uranium deposit, thereby being significant sandstone type uranium deposit prospecting.

Description

technical field [0001] The invention belongs to the technical field of uranium ore geological exploration and geophysical detection, and specifically relates to a spatial positioning method for a favorable target area of ​​a sandstone-type uranium deposit in an interlayer oxidation zone. Background technique [0002] The formation of sandstone-type uranium deposits is due to the activation and leaching of uranium in rocks by oxygen-containing artesian water, which migrates along with the groundwater along the sandstone layer into the basin. , the uranyl complex is decomposed, and the hexavalent uranium is reduced to tetravalent uranium, which is precipitated and enriched. Therefore, the spatial distribution of uranium mineralization zones is strictly controlled by the pinch-out sites of interlayer oxidation zones (ie redox transition zones). [0003] Uranium ore does not have abnormal characteristics such as density, magnetism, and electricity, except for the obvious radioa...

Claims

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Application Information

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IPC IPC(8): G01V3/08
Inventor 万汉平程纪星喻翔
Owner BEIJING RES INST OF URANIUM GEOLOGY
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