Unlock instant, AI-driven research and patent intelligence for your innovation.

Method for tracing garnet source based on microscopic confocal laser Raman

A garnet and confocal technology, applied in Raman scattering, material excitation analysis, etc., can solve the problems of sample damage and long test time

Inactive Publication Date: 2021-04-23
INST OF GEOLOGY & GEOPHYSICS CHINESE ACAD OF SCI
View PDF4 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, the conventional technical method to obtain the chemical composition of garnet is through electron probe technology, but this technology requires the sample surface to be flat and conductive, so pre-treatments such as polishing and carbon plating or gold plating are required, and the test is time-consuming and expensive. Some damage to the sample

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Method for tracing garnet source based on microscopic confocal laser Raman
  • Method for tracing garnet source based on microscopic confocal laser Raman

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0029] Taking three representative detrital garnet samples from the Cretaceous sandstone in the Luxi Basin as examples below, in conjunction with the accompanying drawings, the specific implementation method of the present invention will be further described in detail.

[0030] The present invention provides an analysis method for tracing detrital garnet sources based on microscopic confocal laser Raman, the method comprising:

[0031] (1) Sample preparation

[0032] Ordinary sheet or electronic probe sheet, do not add a cover glass. The total number of garnets analyzed on SD070-1, SD074-2 and SD080-1 samples is more than 100, and each garnet is numbered, so as to ensure the comparative analysis of the same point. Statistical garnet particle size, shape and color during observation. Samples SD070-1 and SD074-2 were taken from the middle member of the Wangshi Formation of the Upper Cretaceous System, and sample SD080-1 was taken from the lower member of the Wangshi Formation ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention provides an analysis method for chipping garnet source tracing based on a microscopic confocal laser Raman spectrometer. Garnet includes 6 end-member components, each end-member component has a typical Raman spectrum peak. Molecular structure information can be fully revealed by the form and displacement of Raman spectrum peaks, and each peak position correspondingly changes along with the difference of molecular components. The method comprises the steps of solving the molar percentage content of each garnet according to four strong spectrum peak values (340-368, 515-560, 800-870 and 870-920cm<-1>), then carrying out triangular projection, and analyzing the protolith type of the garnet. Compared with traditional electronic probe data, the laser Raman technology can be used for obtaining garnet quantitative analysis in a lossless mode, the method is very rapid, cheap and effective for researching chemical components of garnet, and a new technical means is provided for tracing a sediment source, so that the method can be widely applied to research of pot and mountain effects, regional paleo-geographical evolution and the like.

Description

technical field [0001] The invention relates to the technical field of sedimentary basin research, in particular to a method for tracing the source of garnet by using microscopic confocal laser Raman technology. Background technique: [0002] Provenance analysis is an important idea for analyzing basin-mountain processes and regional tectonic paleogeographical evolution, and it is also a hot spot in basin dynamics research in recent years. Detrital garnet is a common relatively stable heavy mineral in orogenic belt sediments. The chemical composition of garnet is relatively complex, including six end member components: pyrope (Pyrope, Mg 3 Al 2 Si 3 o 12 ), almandine (Almandine, Fe 3 Al 2 Si 3 o 12 ), spessartine (Spessartine, Mn 3 Al 2 Si 3 o 12 ), grossular garnet (Grossular, Ca 3 Al 2 Si 3 o 12 ), andradite (Andradite, Ca 3 Fe 2 Si 3 o 12 ) and calcium chrome garnet (Uvarovite, Ca 3 Cr 2 Si 3 o 12 ). Due to the specificity of the chemical composit...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): G01N21/65
Inventor 李忠刘嘉庆徐建强
Owner INST OF GEOLOGY & GEOPHYSICS CHINESE ACAD OF SCI