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A method for geological identification of oxidation zone between ore-bearing layers of sandstone-type uranium deposits

A technology of interlayer oxidation zone and identification method, which is applied in the field of uranium ore metallogenic theory and prospecting, can solve the problem of not being able to determine whether the interlayer oxidation zone contains ore, and achieve the effect of improving the purpose and success rate of ore prospecting

Active Publication Date: 2021-10-19
BEIJING RES INST OF URANIUM GEOLOGY
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Problems solved by technology

According to these features, the interlayer oxidation zone can be identified, but it cannot be concluded whether the interlayer oxidation zone contains ore

Method used

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  • A method for geological identification of oxidation zone between ore-bearing layers of sandstone-type uranium deposits
  • A method for geological identification of oxidation zone between ore-bearing layers of sandstone-type uranium deposits
  • A method for geological identification of oxidation zone between ore-bearing layers of sandstone-type uranium deposits

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Embodiment 1

[0058] Example 1 Application example of identification of ore-bearing property in the oxidation zone of the Mengqigul uranium deposit in the southern margin of the Yili Basin

[0059] The specific steps for identifying the ore-bearing property of the oxidation zone of the Mengqiguer uranium deposit on the southern edge of the Yili Basin by using the method of the present invention are as follows:

[0060] (1) Identification of the oxidation zone of the Mengqigul uranium deposit

[0061] The oxidized sand bodies of the Mengqigul uranium deposit are sandwiched between the upper and lower coal seams, so the oxidation zone in this area is an interlayer oxidation zone.

[0062] (2) Preliminary identification of oxidation degree.

[0063] Observing the rocks in the oxidation zone of the Mengqigul uranium deposit, it is preliminarily judged that the oxidation zone is a strong oxidation zone, based on the following table:

[0064] (3) Collect samples

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Abstract

The invention belongs to the fields of uranium ore metallogenic theory and ore prospecting technical methods, and in particular relates to a method for geological identification of oxidation zone between ore-bearing layers of sandstone-type uranium ore, comprising the following steps: step 1, identification of oxidation zone; step 2, preliminary identification Oxidation degree; enter the third step, continue to identify; if the oxidation degree is low, the mineral content is low, and the identification is terminated; step three, collect samples; collect sandstone samples in the interlayer oxidation zone; step four, mineralogical identification; grind the samples Make thin slices and observe the alteration and decomposition of uranium-bearing minerals under an optical microscope. If the uranium-bearing minerals are all altered and decomposed, the interlayer oxidation zone contains ore; step 5, geochemical identification; test the trace element composition in the sample , to analyze the migration of U, V, Mo, Re, Se and other elements. If these elements all migrate out, the interlayer oxidation zone contains ore.

Description

technical field [0001] The invention belongs to the field of uranium ore metallogenic theory and ore prospecting methods, and in particular relates to a geological identification method for an oxidation zone between sandstone-type uranium ore-bearing layers. Background technique [0002] The oxidation zone is an important identification mark of sandstone-type uranium mineralization in a sedimentary basin, and the interlayer oxidation zone is formed by the migration of groundwater in the middle sandstone of the upper and lower aquitards. Because the sandstone-type uranium deposits in the typical interlayer oxidation zone in the basin are of epigenetic oxidation origin, that is, the oxygen-containing uranium-containing water on the surface infiltrates into the original reducing ore-bearing layer, and the original gray ore-bearing layer is oxidized into brown-red, brown-yellow and yellow, etc. Alteration zone. This oxidation zone is an important sign for searching for interlay...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N21/25G01N21/84G01N33/24
CPCG01N21/25G01N21/84G01N33/24
Inventor 刘章月秦明宽张玉燕许强耿英英
Owner BEIJING RES INST OF URANIUM GEOLOGY
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