Comprehensive method for identifying source of sandstone-type uranium mineralization target stratum

A comprehensive method, a technology for uranium mineralization, applied in measurement devices, instruments, scientific instruments, etc., to achieve the effect of improving objectivity and accuracy, overcoming limitations and human subjectivity

Inactive Publication Date: 2019-04-05
BEIJING RES INST OF URANIUM GEOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The purpose of the present invention is to overcome the shortcomings of the traditional single method in terms of identification accuracy an

Method used

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  • Comprehensive method for identifying source of sandstone-type uranium mineralization target stratum
  • Comprehensive method for identifying source of sandstone-type uranium mineralization target stratum
  • Comprehensive method for identifying source of sandstone-type uranium mineralization target stratum

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Embodiment 1

[0052] Example 1 Application example of source area identification of Lower Cretaceous Qingshuihe Formation in the southern margin of Junggar Basin

[0053] The specific steps of utilizing the method of the present invention to discriminate the source area of ​​the Lower Cretaceous Qingshuihe Formation in the southern margin of the Junggar Basin are as follows:

[0054] (1) Collect the Lower Cretaceous Qingshuihe Formation (K 1 q) Sandstone samples

[0055] Collect 3 pieces of fresh sandstone samples from the bottom, middle and upper parts of the Lower Cretaceous Qingshuihe Formation in the southern margin of the Junggar Basin, remove the oxide layer on the surface of the samples, and each sample weighs at least 5 kg.

[0056] (2) Identify the composition and content of heavy minerals in the sample.

[0057] After crushing a sample of at least 5 kg to 80 mesh, after panning, the heavy minerals in the sample are selected, and the composition of heavy minerals and the relative...

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Abstract

The invention belongs to the field of uranium mineralization theories and prospecting technology methods, and particularly relates to a comprehensive method for identifying a source of a sandstone-type uranium mineralization target stratum. The comprehensive method comprises the following steps that 1, a sandstone sample of the target stratum is collected; 2, the composition and content of heavy minerals in the sample are identified; the collected sandstone sample is crushed to 80 mesh, and the heavy minerals in the sample are selected by levigating, and the composition of the heavy minerals and the relative content of various heavy minerals are identified under binoculars; 3, elemental composition in the sample is detected; part of the sample is pulverized to 200 mesh, and an ICP-MS traceelement analyzer and an X fluorescence spectrometer are used for correspondingly testing the content of trace elements and major elements in the sample; 4, detrital zircon U-Pb isotope test is carried out; the detrital zircon is separated from the heavy minerals, and laser ablation plasma mass spectrometry LA-ICP-MS is used for testing the U-Pb isotope composition of zircon in the detrital zircon; and after U-Pb isotope data are obtained, a Isoplot 4.15 software is used for processing, and an age harmonic map is fitted; and 5,source area discrimination is carried out.

Description

technical field [0001] The invention belongs to the field of uranium ore-forming theory and ore-prospecting technology and method, and specifically relates to a comprehensive method for identifying the material source of a sandstone-type uranium ore-forming target layer. Background technique [0002] Sufficient uranium sources are the necessary material basis for the formation of sandstone-type uranium deposits and the primary basic condition for evaluating the basin's uranium ore-forming potential. At present, it is generally believed that the uranium sources of sandstone-type uranium deposits in sedimentary basins include "external" and "internal" dual uranium sources, especially the ancient continental blocks and mature continental crust in the erosion source area of ​​the basin can provide good material sources and resources for uranium mineralization. uranium source. Most of the sandstone-type uranium deposits in my country are distributed in shallow basin margins, so ...

Claims

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Application Information

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IPC IPC(8): G01N23/223
CPCG01N23/223
Inventor 刘章月秦明宽修晓茜何中波宋继叶耿英英
Owner BEIJING RES INST OF URANIUM GEOLOGY
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