Study on the Mineralogical Characteristics of 12 Copper Concentrates by X-ray Fluorescence Spectrometry, X-ray Powder Diffraction and Polarization Microscope

MIN Hong; LIU Qian; ZHANG Jin-yang; ZHOU Hai-ming; YAN De-tian; XING Yan-jun; LI Chen; LIU Shu

doi:10.15898/j.cnki.11-2131/td.202004020038

2021 Vol. 40, No. 1

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Article navigation > Rock and Mineral Analysis > 2021 > 40(1): 74-84

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MIN Hong, LIU Qian, ZHANG Jin-yang, ZHOU Hai-ming, YAN De-tian, XING Yan-jun, LI Chen, LIU Shu. Study on the Mineralogical Characteristics of 12 Copper Concentrates by X-ray Fluorescence Spectrometry, X-ray Powder Diffraction and Polarization Microscope[J]. Rock and Mineral Analysis, 2021, 40(1): 74-84. doi: 10.15898/j.cnki.11-2131/td.202004020038

Citation:

MIN Hong, LIU Qian, ZHANG Jin-yang, ZHOU Hai-ming, YAN De-tian, XING Yan-jun, LI Chen, LIU Shu. Study on the Mineralogical Characteristics of 12 Copper Concentrates by X-ray Fluorescence Spectrometry, X-ray Powder Diffraction and Polarization Microscope[J]. Rock and Mineral Analysis, 2021, 40(1): 74-84. doi: 10.15898/j.cnki.11-2131/td.202004020038

Study on the Mineralogical Characteristics of 12 Copper Concentrates by X-ray Fluorescence Spectrometry, X-ray Powder Diffraction and Polarization Microscope

1.
Technical Center for Industrial Product and Raw Material Inspection and Testing, Shanghai Customs, Shanghai 200135, China
2.
Chemical Engineering and Biotechnology, Key Laboratory of Science and Technology of Eco-Textile, Ministry of Education, Donghua University, Shanghai 201620, China
3.
College of Resources, China University of Geosciences(Wuhan), Wuhan 430074, China

More Information

Corresponding author: LIU Shu, liu_shu@customs.gov.cn

Received Date: 02 April 2020

Revised Date: 31 May 2020

Accepted Date: 02 November 2020

Publish Date: 28 January 2021

Abstract

Abstract

BACKGROUND
China is the largest importer of copper concentrate in the world. Studying the mineralogical characteristics of copper concentrates imported from different origins can be used to support the origin analysis and solid waste identification of copper concentrates.
OBJECTIVES
To investigate the elemental composition and mineral assemblage characteristics of imported copper concentrates from different mining areas, and to discuss the mineralogical differences of copper concentrates of different genetic types.
METHODS
The copper concentrates imported from different mining areas were comprehensively analyzed by X-ray fluorescence spectrometry (XRF), X-ray powder diffraction (XRD) and polarized microscopy (PM).
RESULTS
X-ray fluorescence spectroscopy analysis showed that the main elements of the copper concentrates were Cu, Fe, S, O with minor Zn, Si, Al, Mg, Ca, Pb. X-ray powder diffraction phase analysis showed that the main phase of the copper concentrate sample was chalcopyrite, followed by pyrite and sphalerite. Polarization microscope showed that the content of chalcopyrite in copper concentrates was between 88% and 98%, and it was found that chalcopyrite was associated with sphalerite, pyrite and pyrrhotite, and that sphalerite was associated with bornite, arsenotetrahedrite. Chalcopyrite, arsenotetrahedrite and bornite form intergrowths. Combining the analysis of different genetic types of copper concentrates, samples of porphyry, skarn and VMS deposits were composed of chalcopyrite, pyrite and sphalerite with respective special minerals of biotite, weddellite and lead anglesite. The main minerals of the IOCG deposit samples were chalcopyrite, pyrrhotite and talc.
CONCLUSIONS
Through the combination of XRF, XRD and PM, the elemental content and phase composition of copper concentrate samples were characterized. The mineralogical characteristics of copper concentrate samples from different origins have been more comprehensively analyzed, which is of great significance for risk identification and control of imported copper concentrates.
- copper concentrates /
- X-ray powder diffraction /
- X-ray fluorescence spectrometry /
- polarizing microscope /
- mineralogical characteristics

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