全球现代海底块状硫化物战略性金属富集机理及资源前景初探

罗洪明; 韩喜球; 王叶剑; 吴雪停; 蔡翌旸; 杨铭

doi:10.3799/dqkx.2020.396

Volume 46 Issue 9

Oct. 2021

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Luo Hongming, Han Xiqiu, Wang Yejian, Wu Xueting, Cai Yiyang, Yang Ming, 2021. Preliminary Study on the Enrichment Mechanism of Strategic Metals and Their Resource Prospects in Global Modern Seafloor Massive Sulfide Deposits. Earth Science, 46(9): 3123-3138. doi: 10.3799/dqkx.2020.396

Citation:

Luo Hongming, Han Xiqiu, Wang Yejian, Wu Xueting, Cai Yiyang, Yang Ming, 2021. Preliminary Study on the Enrichment Mechanism of Strategic Metals and Their Resource Prospects in Global Modern Seafloor Massive Sulfide Deposits. Earth Science, 46(9): 3123-3138. doi: 10.3799/dqkx.2020.396

Citation:

Luo Hongming, Han Xiqiu, Wang Yejian, Wu Xueting, Cai Yiyang, Yang Ming, 2021. Preliminary Study on the Enrichment Mechanism of Strategic Metals and Their Resource Prospects in Global Modern Seafloor Massive Sulfide Deposits. Earth Science, 46(9): 3123-3138. doi: 10.3799/dqkx.2020.396

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Preliminary Study on the Enrichment Mechanism of Strategic Metals and Their Resource Prospects in Global Modern Seafloor Massive Sulfide Deposits

doi: 10.3799/dqkx.2020.396

Luo Hongming^{1
,
,},
Han Xiqiu^{1, 2, 3
,
,
,},
Wang Yejian^{1
,
,
,},
Wu Xueting^{1, 2},
Cai Yiyang^{1, 3},
Yang Ming¹

1.
Key Laboratory of Submarine Geosciences & Second Institute of Oceanography, Ministry of Natural Resources, Hangzhou 310012, China
2.
Ocean College, Zhejiang University, Zhoushan 316021, China
3.
School of Oceanography, Shanghai Jiao Tong University, Shanghai 200240, China

Received Date: 2020-11-11
Available Online: 2021-10-14
Publish Date: 2021-10-14

Abstract

Abstract

Seafloor massive sulfides (SMS), which are rich in strategic metals such as Cu, Cd, Au, Fe, Ag, and Co, are strategic resources available for human development and utilization in the future. We collected the geochemical composition data of 3 946 SMS samples in global hydrothermal systems. They were classified into six types according to the tectonic setting: fast-spreading ridge type, medium-spreading ridge type, slow-spreading ridge type, ultra-slow spreading ridge type, back-arc spreading center type, and arc volcano type, respectively. The distribution and main controlling factors of SMS strategic metals are analyzed by multivariate statistical method, and then the resource prospects of SMS strategic metals are discussed. It is found that the strategic metals in SMS deposits of different tectonic environments are quite different. The SMS deposits at mid-ocean ridge tend to be enriched in Cu+Fe+Co±Mo, while the SMS deposits in the back-arc spreading center and arc volcano tend to be enriched in Zn+Pb+Cd+Sb+Ag±Au. The main controlling factors of SMS strategic metals are metallogenic temperature, ore-forming source, pH and redox conditions, respectively. The fluid temperature is mainly controlled by the water depth. The sources of ore-forming materials are mainly controlled by the structural geological environment. The pH and redox properties are mainly controlled by the type of wall rock. We propose that the back-arc spreading center with water depth of 1 080-2 160 m could be key targets for strategic metals such as Cu, Au, Cd and Ag, while the regions such as non-transform discontinuous and detachment fault extensional shear zone of slow- and ultraslow-spreading ridges with water depth greater than 2 650 m could be key targets for Cu, Au, Fe, Co, etc.
- strategic metals,
- seafloor massive sulfide,
- multivariate statistical analysis,
- enrichment mechanism,
- resource prospects,
- marine geology

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References(40)

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