A Study on Alteration Mineral Assemblages and Mineralization Characteristics of a Wunugetushan Porphyry Copper-Molybdenum Deposit in Inner Mongolia, China, Based on Infrared Spectroscopy

LIU Xin-xing; ZHANG Hong; ZHANG Juan; SHI Wei-xin; ZHANG Xin-le; CHENG Jia-wei; LU Ke-xuan

doi:10.15898/j.cnki.11-2131/td.202005060010

2021 Vol. 40, No. 1

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Article navigation > Rock and Mineral Analysis > 2021 > 40(1): 121-133

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LIU Xin-xing, ZHANG Hong, ZHANG Juan, SHI Wei-xin, ZHANG Xin-le, CHENG Jia-wei, LU Ke-xuan. A Study on Alteration Mineral Assemblages and Mineralization Characteristics of a Wunugetushan Porphyry Copper-Molybdenum Deposit in Inner Mongolia, China, Based on Infrared Spectroscopy[J]. Rock and Mineral Analysis, 2021, 40(1): 121-133. doi: 10.15898/j.cnki.11-2131/td.202005060010

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LIU Xin-xing, ZHANG Hong, ZHANG Juan, SHI Wei-xin, ZHANG Xin-le, CHENG Jia-wei, LU Ke-xuan. A Study on Alteration Mineral Assemblages and Mineralization Characteristics of a Wunugetushan Porphyry Copper-Molybdenum Deposit in Inner Mongolia, China, Based on Infrared Spectroscopy[J]. Rock and Mineral Analysis, 2021, 40(1): 121-133. doi: 10.15898/j.cnki.11-2131/td.202005060010

A Study on Alteration Mineral Assemblages and Mineralization Characteristics of a Wunugetushan Porphyry Copper-Molybdenum Deposit in Inner Mongolia, China, Based on Infrared Spectroscopy

1.
Hebei Key Laboratory of Strategic Critical Mineral Resources, Hebei GEO University, Shijiazhuang 050031, China
2.
Core and Samples Center of Land and Resources, China Geological Survey, Sanhe 065201, China

More Information

Corresponding author: ZHANG Juan, zhangjqtds@126.com

Received Date: 06 May 2020

Revised Date: 16 October 2020

Accepted Date: 11 December 2020

Publish Date: 28 January 2021

Abstract

Abstract

BACKGROUND
In recent years, infrared spectroscopy and thermal infrared spectroscopy have played an important role in mineralogy research, geological exploration and prospecting.
OBJECTIVES
To investigate alteration minerals and mineralization features of a Wunugetushan porphyry copper-molybdenum deposit in Inner Mongolia.
METHODS
Core samples were scanned by infrared spectroscopy core scanning system and analyzed by TSG 8.0.
RESULTS
The alteration minerals of the Wunugetushan porphyry copper molybdenum deposit mainly included quartz, potassium feldspar, sericite, illite, kaolinite and montmorillonite. The alteration mineral assemblage showed obvious zonation in space. Quartz+illite+sericite+potassium feldspar had the closest relationship with mineralization and can be used as the standard mineral assemblage for ore prospecting. By comparing with the spatial distribution of Cu and Mo mineralization, the wavelength shift of the absorption peak at 2200nm to shorter wavelengths was closely related to the mineralization center, and the IC value of illite reflects the degree of crystallization and mineralization.
CONCLUSIONS
This technical method can be used to quickly delineate the alteration mineral assemblage of porphyry copper-molybdenum ore through the alteration mineral spectrum, thereby improving the exploration efficiency.
- drill core /
- infrared spectroscopy /
- alteration zonation /
- porphyry copper-molybdenum deposit /
- Wunugetushan

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References

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