Method for establishing mineralogical mark of oxidized zone of sandstone-type uranium ore

A method of establishing methods and mineralogical techniques, applied in the field of uranium ore metallogenic theory and ore prospecting, can solve problems such as inability to distinguish oxidation zones

Inactive Publication Date: 2018-06-15
BEIJING RES INST OF URANIUM GEOLOGY
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  • Abstract
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Problems solved by technology

However, it is one-sided to simply divide the oxidation zone only by the alteration color, because the naked eye ca

Method used

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  • Method for establishing mineralogical mark of oxidized zone of sandstone-type uranium ore
  • Method for establishing mineralogical mark of oxidized zone of sandstone-type uranium ore

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specific Embodiment

[0030] Utilize the method of the present invention to carry out the specific embodiment step of the mineralogical marker division of oxidation zoning to a certain uranium deposit in Xinjiang as follows:

[0031] (1) Continuously collect drill core samples of different colors from red→light red→yellow→off-white→gray in the uranium deposit.

[0032] (2) Each sample was cut into 4 thin slices and stripped to 0.03 mm.

[0033] (3) Under the Axioskop40 Zeiss polarizing microscope made in Germany, the alteration degree and shape of biotite, feldspar, pyrite, carbon dust, uranium minerals and other minerals in light thin sections were observed. Record the form and alteration degree of each mineral in detail, as well as the types of altered minerals, so as to establish a detailed mineralogical identification mark.

[0034] (4) Systematically sort out the results of optical thin section observation and recording, and establish mineralogy marks in each oxidation subzone (such as figu...

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Abstract

The invention belongs to the field of the uranium mineralization theory and prospecting technologies and specifically relates to a method for establishing a mineralogical mark of an oxidized zone of sandstone-type uranium ore. The method comprises 1: acquiring a sample through a system, 2: preparing a polished thin slice, 3: observing the degree of mineral alteration and 4: establishing mineralogical markers in all oxidized zones. The method refers to the color standard but also provides a microscopic mineralogical marker, and provides a basis for the accurate banding of interlayer oxidized zones.

Description

technical field [0001] The invention belongs to the field of uranium ore metallogenic theory and ore prospecting technology, and in particular relates to a method for establishing mineralogy markers of sandstone-type uranium ore oxidation zoning. Background technique [0002] Oxidation zone is an important identification mark of sandstone-type uranium mineralization in sedimentary basins. Because the typical sandstone-type uranium deposits in the interlayer oxidation zone in the basin are of epigenetic oxidation origin, that is, surface oxidized water permeates into the original reducing ore-bearing layer for a long time, and the original gray ore-bearing layer is oxidized into brown-red, brown-yellow and yellow oxidative alterations. bring. This oxidation zone is an important sign for searching for interlayer oxidation zone sandstone-type uranium deposits. Predecessors subdivided the oxidation zone into fully oxidized subzone, incompletely oxidized subzone, oxidation-redu...

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Application Information

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IPC IPC(8): G01N17/00
CPCG01N17/00
Inventor 刘章月张玉燕耿英英何中波郭强许强黄少华
Owner BEIJING RES INST OF URANIUM GEOLOGY
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