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Microscopic clay mineral identification method

A clay mineral and microscopic identification technology, which is applied in the directions of Raman scattering and material excitation analysis, can solve the problems that in-situ micro-area analysis cannot be realized, and achieve the effects of avoiding pretreatment process, high sensitivity and high test accuracy

Inactive Publication Date: 2019-06-07
BEIJING RES INST OF URANIUM GEOLOGY
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Problems solved by technology

[0004] The purpose of the present invention is to solve the defect that in-situ micro-area analysis cannot be realized when judging the type of clay minerals in the existing X-ray diffraction analysis technology, and to provide a microscopic identification method for clay minerals

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Embodiment Construction

[0021] The present invention will be described in further detail below with reference to the accompanying drawings and embodiments.

[0022] like figure 1 As shown, a microscopic identification method for clay minerals, the method includes the following steps:

[0023] Step 1: Collect ore samples; field investigation, collect rock samples containing clay minerals, the sample size is 3 × 6 × 9 cm, and the sample is 5 pieces.

[0024] Step 2: Make optical thin slices and identify rocks and minerals for the collected ore samples; slice the collected ore samples into 0.3mm optical thin slices, observe the composition of clay minerals in the rocks on a microscope, and circle the positions of clay minerals. out for the next step of laser Raman spectroscopic analysis.

[0025] Step 3: Carry out laser Raman spectroscopic analysis on the in-situ clay minerals; set up a microlaser Raman spectrometer used for the laser Raman analysis, and the instrument used for the laser Raman analysi...

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Abstract

The invention relates to a microscopic clay mineral identification method, and belongs to the technical field of clay mineral and mineralizing alteration. The method comprises the following steps that1) an ore sample is collected; 2) the ore sample is made into light slices, and rock-mineral determination is carried out on the sample; 3) laser Raman spectrum analysis is carried out in-situ clay minearl; and 4) the data is processed, and a Raman spectra is compared to accurately identify the clay mineral. According to the method, the laser Raman spectra is used to identify the clay mineral, the test accuracy is high, operation is simple, less time is used, a complex sample pre-treatment process is avoided, and bases are provided for revealing relation between microscopic characteristic ofthe clay mineral and other minerals, and research on the structure, reason and clay type of the clay mineral.

Description

technical field [0001] The invention belongs to the technical field of clay minerals and mineralization alteration, and particularly relates to a microscopic identification method of clay minerals. Background technique [0002] Clay minerals are hydrous aluminosilicate minerals with layered structure, which are the main mineral components of clay rocks and soils. Clay minerals can be divided into kaolinite, illite, montmorillonite, vermiculite and sepiolite minerals according to their crystal structure, composition characteristics and main optical properties. With plasticity, fire resistance and sintering properties, it is an important natural raw material for ceramics, refractories, cement, paper, petrochemical, paint, textile and other industries. [0003] The particles of clay minerals are fine, generally less than 0.002mm, and some of them are in a colloidal state. When observed with the naked eye, they are lumpy and earthy. Generally, it is difficult to accurately dist...

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Application Information

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IPC IPC(8): G01N21/65
CPCG01N21/65
Inventor 陈金勇范洪海孙远强王生云何升
Owner BEIJING RES INST OF URANIUM GEOLOGY