ALTERATION ZONING AND PROSPECTING SIGNIFICANCE OF THE HONGDOUSHAN COPPER DEPOSIT IN THE SOUTHERN LANCANGJIANG BELT, WESTERN YUNNAN

CHEN Xinglin; WANG Lei; DING Jinjin; ZHU Enyi

doi:10.12090/j.issn.1006-6616.2019.25.S1.021

Volume 25 Issue S1

May 2019

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CHEN Xinglin, WANG Lei, DING Jinjin, et al., 2019. ALTERATION ZONING AND PROSPECTING SIGNIFICANCE OF THE HONGDOUSHAN COPPER DEPOSIT IN THE SOUTHERN LANCANGJIANG BELT, WESTERN YUNNAN. Journal of Geomechanics, 25 (S1): 124-128. DOI: 10.12090/j.issn.1006-6616.2019.25.S1.021

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ALTERATION ZONING AND PROSPECTING SIGNIFICANCE OF THE HONGDOUSHAN COPPER DEPOSIT IN THE SOUTHERN LANCANGJIANG BELT, WESTERN YUNNAN

doi: 10.12090/j.issn.1006-6616.2019.25.S1.021

CHEN Xinglin^{1, 2
,},
WANG Lei^{1, 2
,
,},
DING Jinjin^{1, 2},
ZHU Enyi^{1, 2}

1.
Kunming University of Science and Technology, Kunming 650093, Yunnan, China
2.
Southwest Geological Survey Institute, Geological Survey Center for Non-ferrous Mineral Resources, Kunming 650093, Yunnan, China

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Published: 2019-05-01

Abstract

Abstract

The Hongdoushan copper deposit is one of the newly discovered in the southern Lancangjiang belt. The alteration characteristics and zoning of the deposit have been studied through field geological work and systematic structural alteration lithofacies mapping. The main altered types for Hongdoushan deposit are as follows: potassic feldspathization, silicification, chloritization, epidotization, and secondary carbonation, sericitization and limonitization. Surrounding rock alteration in the mining area shows a certain regularity in space, and the alteration zones have obvious superposition phenomenon. According to the characteristics of altered rocks in the area, from the fault zone to the hanging wall rock, there are four obvious alteration zones, which are Cataclastic rock zone, felsic lithification-carbonate-sericite zone, silicification-chlorite-epidote zone and weakly felsic lithification andesite zone. The ore-bodies are located mainly in the felsic lithification, carbonate-sericite zone and silicification-chlorite-epidote zone. The concentric alteration zones from the inner outward of the porphyry veins are successively potassic zone, silicide zone, propylitic zone, sericite zone. Radial quartz-calcite-chalcopyrite veins are developed in the surrounding rocks beside the porphyry.
- alteration zone,
- alkali-rich porphyry,
- prospecting significance,
- Hongdoushan copper deposit,
- southern Lancangjiang metallogenic belt

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ALTERATION ZONING AND PROSPECTING SIGNIFICANCE OF THE HONGDOUSHAN COPPER DEPOSIT IN THE SOUTHERN LANCANGJIANG BELT, WESTERN YUNNAN

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ALTERATION ZONING AND PROSPECTING SIGNIFICANCE OF THE HONGDOUSHAN COPPER DEPOSIT IN THE SOUTHERN LANCANGJIANG BELT, WESTERN YUNNAN

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