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Geological identification method for ore-containing interlayer oxidation zones of sandstone-type uranium deposits

A technology of interlayer oxidation zone and identification method, which is applied to measuring devices, material analysis through optical means, instruments, etc., can solve the problem of not being able to determine whether the interlayer oxidation zone contains ore, so as to improve the purpose and success of ore prospecting rate effect

Active Publication Date: 2019-04-05
BEIJING RES INST OF URANIUM GEOLOGY
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  • Description
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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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  • Geological identification method for ore-containing interlayer oxidation zones of sandstone-type uranium deposits
  • Geological identification method for ore-containing interlayer oxidation zones of sandstone-type uranium deposits
  • Geological identification method for ore-containing interlayer oxidation zones 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 field of a uranium ore metallogenic theory and prospecting technology methods, and particularly relates to a geological identification method for ore-containing interlayeroxidation zones of sandstone-type uranium deposits. The geological identification method comprises the following steps that step 1, identification of the oxidation zones is performed; step 2, the degree of oxidation is subjected to preliminary identification, specifically, if the degree of oxidation is high, the third step is executed, and identification continues to be performed, and if the degree of oxidation is low, the ore-bearing property is low, and the identification is terminated; step 3, samples are collected, specifically, interlayer oxidation zone sandstone samples are collected; step 4, mineralogy identification is performed, specifically, the samples are ground into slices, the alteration and decomposition of uranium-containing ores are observed under an optical microscope, and if alteration and decomposition occur to the uranium-containing ores, the interlayer oxidation zones contain ores; and step 5, geochemical identification is performed, specifically, trace element composition in the samples is tested, the migration conditions of elements such as U, V, Mo, Re and Se is analyzed, and if the migration phenomenon occurs to the elements, the interlayer oxidation zones contain the ores.

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 to find sandstone-type ura...

Claims

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Application Information

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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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