Method for combined tracing exploration on hydrothermal uranium ore through geochemical elements

A geochemical element and hydrothermal technology, applied in the field of uranium ore exploration, can solve the problems of inability to detect deep hydrothermal uranium deposits, achieve the effects of improving the hit rate of ore prospecting, speeding up ore prospecting, and shortening the exploration cycle

Active Publication Date: 2012-05-30
BEIJING RES INST OF URANIUM GEOLOGY
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  • Abstract
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Problems solved by technology

[0003] The purpose of the present invention is to provide a method for trace exploration of hydrothermal uranium ore by combination of geochemical elements, which can effectively solve the key problem that conventional total geochemical prospecting methods cannot detect deep hydrothermal uranium ore

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  • Method for combined tracing exploration on hydrothermal uranium ore through geochemical elements
  • Method for combined tracing exploration on hydrothermal uranium ore through geochemical elements
  • Method for combined tracing exploration on hydrothermal uranium ore through geochemical elements

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Embodiment Construction

[0050] The present invention will be described in further detail below in conjunction with the accompanying drawings and embodiments.

[0051] A method for trace exploration of hydrothermal uranium ore by combination of geochemical elements, specifically comprising the following steps:

[0052] (1) Soil sample collection and processing

[0053] (1.1) Select sampling points in the survey area, and the sampling density is 4 points / km 2 ~500 points / km 2 ;

[0054] The sampling density can be selected as 4 points / km 2 , 10 points / km 2 , 20 points / km 2 , 30 points / km2 , 40 points / km 2 , 50 points / km 2 , 100 points / km 2 , 200 points / km 2 , 300 points / km 2 , 400 points / km 2 or 500 points / km 2 .

[0055] (1.2) Collect 200g-500g of soil at the top of layer B at each sampling point, and pass the collected soil at the top of layer B through a -80 mesh sieve. Take 10g-50g of sieved soil at each sampling point, bake at 105°C-110°C for 2 hours, cool to room temperature and set...

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Abstract

The invention belongs to a uranium ore exploration method and particularly discloses a method for combined tracing exploration on a hydrothermal uranium ore through geochemical elements. The method comprises the following steps of: measuring a uranium component in soil in an exploration area; measuring 210Po; drawing a plane isoline graph of the uranium component and the 210Po element; judging whether an ore-induced uranium component is abnormal or not according to the ratio between the uranium component and uranium total amount; if the ore-induced uranium component is abnormal, further judging (1) whether the uranium component has an abnormal concentration center or not according to a uranium component isoline graph, judging (2) whether the uranium component and the 210Po are abnormally combined or not according to a 210Po isoline graph, and judging (3) whether a uranium component abnormal area and a beneficial ore-forming fracture structure alteration zone correspondingly compound asection; and if at least two results of the steps (1) to (3) are positive, judging that the hydrothermal uranium ore exists. The hydrothermal uranium ore of which the covering layer is 10 meters to several hundred meters can be detected by extracting and measuring the uranium component and the 210Po in a surface soil sample.

Description

technical field [0001] The invention belongs to a method for prospecting uranium ore, in particular to a method for prospecting hydrothermal uranium ore through geochemical element combination tracing technology. Background technique [0002] After more than 50 years of uranium exploration work, most of the shallow deposits have been discovered. With the continuous deepening of the prospecting work, the prospecting depth is getting bigger and bigger, especially the prospecting depth of hydrothermal uranium ore is getting bigger and bigger. For a long time, conventional uranium ore geochemical prospecting (referred to as geochemical prospecting) methods at home and abroad mainly use the total amount of uranium and its associated elements to delineate the surface secondary dispersed halo, dispersed flow or The primary halo looks for outcrops, surface mines and shallow mines. However, since the secondary halos and primary halos generated by hydrothermal uranium deposits are c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01V5/06G01N23/00G01N1/34
Inventor 葛祥坤李子颖尹金双范光张建锋张彦辉张良圣刘汉彬陆士立郭虹薛丽丽王秀琴
Owner BEIJING RES INST OF URANIUM GEOLOGY
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