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Method of Defining Fluid Inclusions in Hydrothermal Uranium Ore-forming Period Based on Scanning Electron Microscopy

A technology of fluid inclusions and scanning electron microscopy, which is applied in instruments, measuring devices, scientific instruments, etc., can solve the problem that fluid inclusions cannot be determined in the metallogenic period of hydrothermal uranium deposits, and achieves expansion of scope, efficient methods and means, and improvement of The effect of accuracy

Active Publication Date: 2021-09-17
BEIJING RES INST OF URANIUM GEOLOGY
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  • Description
  • Claims
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Problems solved by technology

[0004] The present invention provides a reliable and operable scanning electron microscope method for defining fluid inclusions in the mineralization period of hydrothermal uranium deposits, and solves the problem that the fluid inclusions in the mineralization period of hydrothermal uranium deposits cannot be determined

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  • Method of Defining Fluid Inclusions in Hydrothermal Uranium Ore-forming Period Based on Scanning Electron Microscopy

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Embodiment Construction

[0023] Hereinafter, taking the uranium-rich rock whose surrounding rock is volcanic rock in a hydrothermal uranium ore as an example, the specific embodiment of the present invention will be further described in detail in combination with the accompanying drawings. The microscope used in this embodiment is LEICADM4P, the scanning electron microscope is TESCANVEGA3, equipped with EDAX energy spectrometer.

[0024] A method for defining fluid inclusions in the mineralization period of hydrothermal uranium deposits based on scanning electron microscopy, the specific steps of the method are as follows:

[0025] Step (1), making slices of the uranium-enriched ore sample, and grinding the fluid inclusion sheet with double-sided polishing of the uranium-enriched ore sample

[0026] Slice the uranium-enriched rock sample (the surrounding rock is volcanic rock or granite), and grind the fluid inclusion sheet of the uranium-enriched rock sample polished on both sides. The inclusions in...

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Abstract

The invention belongs to the technical field of fluid inclusion analysis, and specifically relates to a method for defining fluid inclusions in the hydrothermal uranium ore-forming period based on a scanning electron microscope. Fluid inclusions and mineral inclusions, generate single polarized light diagrams, reflected light diagrams, and orthogonal polarized light diagrams of the area where secondary fluid inclusions and mineral inclusions are simultaneously developed in mineral micro-cracks, and delineate the area; Inclusions and mineral inclusions are subjected to carbon spraying treatment; the area containing fluid inclusions and mineral inclusions after carbon spraying treatment is subjected to scanning electron microscopy energy spectrum MAPPING analysis to obtain a two-dimensional characteristic map of the components of the area to be tested; according to Single polarized light map, crossed polarized light map, reflected light map, and two-dimensional feature map, construct the spatial distribution characteristics of fluid inclusions and mineral inclusions, and determine whether the inclusions are fluid inclusions in the uranium mineralization period. The method of the invention solves the problem that the fluid inclusions in the ore-forming period of the hydrothermal uranium deposit cannot be determined.

Description

technical field [0001] The invention belongs to the technical field of fluid inclusion analysis, and in particular relates to a method for defining fluid inclusions in a hydrothermal uranium ore-forming period based on a scanning electron microscope. Background technique [0002] Fluid inclusions are rock-forming ore-forming fluids (gas-liquid-containing fluids or silicate melts) that are wrapped in mineral lattice defects or cavities during the mineral crystallization growth process. Host Minerals That part of the material that has phase boundaries. The study of fluid inclusions can restore the physical-chemical conditions of ore-forming (rock-forming and reservoir-forming), the sources of ore-forming fluids and material-forming materials, and is an important method for exploring the genesis of ore deposits and summarizing the ore-forming model. [0003] Undoubtedly, as a direct sample of ore-forming fluids, fluid inclusions can be used to measure the temperature, pressure...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N23/2202G01N23/2252G01N21/84
CPCG01N21/84G01N23/2202G01N23/2252
Inventor 邱林飞吴迪丁波李平
Owner BEIJING RES INST OF URANIUM GEOLOGY
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