Liu Jianping: Finding a mine is no big deal, as long as you make good use of the electronic probe

Indium is a silver-white metal that is easily melted and scatter.

There are a large number of tungsten-tin-lead-zinc polymetallic deposits in southern Hun.

antped.

Associate Professor Liu Jianping, Department of Geological Resources, Central South University

It has been nearly 150 years since the discovery of the element indium, which was first discovered by German physicis.

The United States Geological Survey (USGS) no longer publishes indium resource reserves data after 200 The global indium resource reserves are mainly distributed in China, Peru, the United States, Canada, Russia and other countri.

Relying on the National Natural Science Foundation of China, Liu Jianping's team systematically carried out research on typical scattered indium metal deposits in Chi.

As one of the most commonly used technologies in geological and mineral exploration, electron probe analysis is a microscopic analysis and testing technology that has developed very rapidly in recent decad.

Relying on the Electron Probe Laboratory of Central South University, Liu Jianping discovered new sources of independent indium minerals, indium copper ore and indium kesterite, and discovered sphalerite with abnormally high indium (the edge of the sphalerite in the Xianghualing deposi.

The Shimadzu EPMA-1720H electron probe is equipped with a high-sensitivity, high-resolution all-focusing spectroscopic crystal and a high-characteristic X-ray detection angle of 55°, which enables it to have a very excellent elemental detection lim.

Joint construction to help double first-class

Central South University is one of the first batch of "Double First-Class" universities in the count.

In the field of geological research, the main function of the electron probe micro-analyzer is to test the morphology and composition of minera.

In terms of teaching, the rock and mineral testing technology courses or research methods technology courses offered for undergraduates and graduate students every year provide a lot of opportunities for learning and practice, allowing students to experience the methods and technologies of mineral testing, increasing students' interest in learning and improving teaching effe.

In terms of scientific research, the cooperative laboratory has provided a large amount of accurate mineral composition data for important projects such as the National Key R&D Program and the National Natural Science Foundation of China, laying a good foundation for the publication of high-level scientific research papers, and urging the earth science of Central South University to maintain ESC top 1% lev.

Liu Jianping shared the three major research achievements of the college and the cooperative laboratory in recent yea.

Determination of chemical composition of new minerals

In 2017, Professor Gu Xiangping carried out a large number of unknown minerals electronic probe composition testing work, providing accurate composition data for the discovery and declaration of new minera.

Figure 1 Wuyanzhi Mine (Cu2S) hand specimen, optical microscopic features (ID: IMA-2017-081)

Research on the occurrence state of key metal minerals

It is a newly proposed resource concept in the world in recent yea.

F.

2 BSE images of independent indium minerals: cuprite (a, b) and kesterite (c, d)

F.

3 Scanning map of In element in sphalerite

F.

4 Scanning map of Fe, Co, As elements in pyrite

Mineralogical tracer research on diagenesis and mineralization

For the accessory minerals such as zircon (F.

5), apatite, sphenite, e.

in the rock mass, and the metallic minerals in the metallogenic system such as pyrite, sphalerite, scheelite (F.

6), magnetite et .

, non-metallic minerals garnet, chlorite, e.

carried out detailed mineralogical studies on diagenesis and mineralization, which provided new and strong evidence for the fine determination of diagenesis and mineralization and its proce.

F.

5 Zircon mineralogical study of diagenetic process

F.

6 Mineralogical study of scheelite in the metallogenic system

"Since Shimadzu's electronic probe analyzer was built and assembled in the college in 2012, the college has cooperated closely with Shimadzu, and has carried out a large number of development applications in the field of mineral analysis and oil and gas analysis, especially in terms of instrument maintenance and operation, Shimadzu has timely The after-sales response has made a great contribution to ensuring the normal operation of the instrume.

" Liu Jianping said, "As an old customer of Shimadzu, the college received strong support from various departments of Shimadzu during the preliminary work of the colle.

We hope that Shimadzu will continue to provide High-quality after-sales service ensures the healthy operation of the instrument and obtains more testing data, thereby expanding the laboratory's influence in the field of geology and mini.

"

Biography

Liu Jianping, mainly engaged in the study of mineral electron probe analysis technology, enrichment and integration of scattered elemen.

He has presided over more than 10 national key R&D projects, National Natural Science Foundation of China, e.

, published more than 10 SCI/EI papers as the first author, and won 1 second prize of China Nonferrous Metals Industry Science and Technology Awa.