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Evaluation method suitable for judging ancient river valley sandstone type uranium ore uranium source

An evaluation method and sandstone-type technology, which are applied in the preparation of test samples, geophysical measurements, material inspection products, etc., can solve problems such as poor reliability, and achieve the effect of credible and effective evaluation.

Inactive Publication Date: 2020-04-21
BEIJING RES INST OF URANIUM GEOLOGY
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Problems solved by technology

[0005] The technical problem solved by the present invention is the problem that the effective evaluation method for the uranium source of paleo-valley sandstone-type uranium deposits in the prior art has poor reliability, and further provides a method capable of effectively evaluating the uranium source of paleo-valley sandstone-type uranium deposits

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  • Evaluation method suitable for judging ancient river valley sandstone type uranium ore uranium source
  • Evaluation method suitable for judging ancient river valley sandstone type uranium ore uranium source
  • Evaluation method suitable for judging ancient river valley sandstone type uranium ore uranium source

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Embodiment Construction

[0030] The present invention will be described in further detail below in conjunction with the accompanying drawings and embodiments.

[0031] Taking the Hadatu area of ​​Erlian Basin as an example, an evaluation method for judging the uranium source of paleo-valley sandstone-type uranium deposits provided by the present invention is described in detail.

[0032] Such as figure 1 As shown, a kind of evaluation method for judging the uranium source of ancient river valley sandstone type uranium deposit provided by the present invention, this method specifically comprises the following:

[0033] Step (1), collecting the sandstone sample of the ore-bearing target layer;

[0034] In this example, sandstone samples from the upper member of the Saihan Formation in the ore-bearing target layer in the Hadatu area of ​​the Erlian Basin were collected.

[0035] The FZK63-79 sample used for the study of detrital zircon chronology was collected from the 372m of the FZK63-79 drill hole i...

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Abstract

The invention belongs to the technical field of uranium ore mineralization potential evaluation, and particularly discloses an evaluation method suitable for judging a sandstone type uranium ore uranium source in a basin. The evaluation method comprises the steps of: (1) collecting an ore-containing target layer sandstone sample; (2) selecting chippings zircon in the sample to prepare a zircon target; (3) testing the U-Pb isotope and U element content of zircon; (4) acquiring a zircon isotopic age histogram and a zircon U-Pb isotopic age and U content element diagram according to the U-Pb isotope and the U element content; (5) providing a source magmatic rock age range and geographical distribution characteristics for the ore-bearing target stratum sandstone according to the analysis in the step (4); (6) finding out the age range of the detritus zircon with the highest U content and particle number ratio according to the U-Pb isotopic age of the zircon and the U content element diagram, and determining a uranium source in a pre-enrichment stage in combination with the step (5); and (7) determining a uranium source in the mineralization stage according to the steps (5) and (6). Theevaluation method provided by the invention can be used for judging uranium sources in sedimentary diagenetic and mineralization action stages of the ore-bearing target layer.

Description

technical field [0001] The invention belongs to the technical field of metallogenic potential evaluation and prospecting of sandstone-type uranium deposits in ancient river valleys, and specifically relates to an evaluation method suitable for judging uranium sources of sandstone-type uranium deposits in basins. Background technique [0002] The ancient river valley sandstone-type uranium deposit is one of the most important types of uranium deposits in the world, and it is also the main direction of uranium exploration in my country. A large number of studies have shown that the U-rich granite around the basin provides the main uranium source and provenance for the paleovalley sandstone-type uranium deposits. However, due to the wide distribution, large quantity and various U element contents of the granites around the basin, the accurate determination of the uranium source of the paleo-valley sandstone-type uranium deposits has become a difficult point in the study of mine...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N33/24G01N27/64G01N21/84G01N1/28G01N1/32G01V11/00
CPCG01N1/286G01N1/32G01N21/84G01N27/64G01N33/24G01V11/00
Inventor 刘佳林秦明宽刘章月
Owner BEIJING RES INST OF URANIUM GEOLOGY
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