A method for quantitatively evaluating the contribution of uranium source bodies to the mineralization of sandstone-type uranium deposits

A quantitative evaluation and contribution technology, applied in geophysical measurement, instruments, metal testing, etc., can solve the problems of lack of specific indicators of contribution, limited description of uranium source body, etc., and achieve the effect of improving efficiency

Active Publication Date: 2017-05-17
BEIJING RES INST OF URANIUM GEOLOGY
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Problems solved by technology

However, these studies are limited to qualitative descriptions and uranium source bodies themselves, and lack specific indicators for evaluating the contribution of uranium source bodies to sandstone-type uranium mineralization.

Method used

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  • A method for quantitatively evaluating the contribution of uranium source bodies to the mineralization of sandstone-type uranium deposits
  • A method for quantitatively evaluating the contribution of uranium source bodies to the mineralization of sandstone-type uranium deposits
  • A method for quantitatively evaluating the contribution of uranium source bodies to the mineralization of sandstone-type uranium deposits

Examples

Experimental program
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Embodiment 1

[0059] Example 1 An example of the southwestern margin of the Turpan-Hami Basin in Xinjiang

[0060] Such as figure 2 As shown, the southwestern margin of the Turpan-Hami Basin, which has a relatively high degree of research, was selected as the research area, and the 1:200,000 geological map of the research area was selected as the base map, and 12 uranium source bodies were circled. After testing the U-Pb isotope composition of the uranium source body On the basis of determining the uplift and denudation time, the uranium migration amount, exposed area and denudation time evaluation parameter weight of each uranium source body was calculated; according to the specific exposure position of the uranium source body in the study area, the distance adjustment constant (f 0 and f 1 ), using the established evaluation mathematical model to calculate the contribution of each uranium source body to each point of the basin margin. The specific steps for quantitatively evaluating th...

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Abstract

The invention belongs to the field of ore-forming potentiality evaluation of a sandstone type uranium ore in a basin and an exploration technical method and particularly discloses a method for quantitatively evaluating mineralization contribution degree of a uranium resource body for the sandstone type uranium ore. The method comprises following steps: 1, selecting maps or drawings and outlining the uranium resource body; 2, optimizing evaluation parameters; 3, judging the palaeoclimate environment after the uranium resource body is exposed out of an earth surface; 4, calculating respective evaluation parameter weights of the uranium resource body; 5, calculating the contribute degree P (a) of the uranium resource body for an exploration target layer. The method can quantify the evaluation index of the contribute degree of a uranium resource, realizes the qualitative description for the uranium resource body and the single parameter evaluation to the multi-parameter quantitative evaluation, a target region is zoomed out for exploration in a sandstone type uranium ore new zone and the uranium ore exploration efficiency is improved.

Description

technical field [0001] The invention belongs to the field of sandstone-type uranium ore-forming potential evaluation and ore-prospecting technical methods in basins, and specifically relates to a method for quantitatively evaluating the contribution of uranium source body to sandstone-type uranium ore-forming. Background technique [0002] The development distance of the ore-controlling interlayer oxidation zone in my country is relatively short, most of which are less than 10km (different from the regional interlayer oxidation zone of hundreds of kilometers in Central Asia). The migration distance of uranium-containing oxygen-enriched water in this interlayer oxidation zone is short, and the amount of uranium extracted from the formation is limited. It can be considered that the uranium source body in the erosion source area is the main source of uranium for sandstone-type uranium deposits in the interlayer oxidation zone. [0003] The output range and scale of sandstone-ty...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01V9/00G01N33/20
Inventor 刘章月秦明宽周觅刘红旭蔡根庆何中波郭强许强宋继叶
Owner BEIJING RES INST OF URANIUM GEOLOGY
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