Geochemical characteristics of antimony and genesis of antimony deposits in South China

doi:10.18654/1000-0569/2020.01.06

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	Geochemical characteristics of antimony and genesis of antimony deposits in South China
	Zhang TianYu 1,2,4; Li CongYing 1,2,4; Sun SaiJun 1,2,4; Hao XiLuo 3
刊名	ACTA PETROLOGICA SINICA
	2020
卷号	36 期号:1 页码:44-54
关键词	Antimony Geochemistry of antimony Cambrian black shale Antimony deposits in South China
ISSN号	1000-0569
DOI	10.18654/1000-0569/2020.01.06
通讯作者	Li CongYing(licongying@qdio.ac.cn)
英文摘要	Antimony is a chalcophile element, which is easily combined with sulfur. The abundances of antimony in the core (0. 14 x 10(-6)), the mantle (0. 006 x 10(-6)) and the crust (0. 02 x 10(-6)) are all very low, while it is enriched in black shale (5. 0 x 10(-6)). The solubility of antimony is controlled by temperature, salinity, pH value and oxygen fugacity, but not to pressure. Rutile and omphacite are the main carriers of antimony in high-pressure to ultrahigh-pressure metamorphic rocks. Antimony is also a typical low-temperature metallogenic element. The low-temperature mineralization domain in South China, possesses 60% of the world's proven antimony reserves mostly formed in the Yanshanian Period. Our studies show that the mineralization of Sb mainly experienced two stages : One is the supergene process related to weathering and sedimentation, and the other is the hydrothermal process caused by magmatism. South China, located near the equator during the Cambrian, was affected by the Gondwana continental orogenic belt, and it is one of the most weathered areas in the world. The fertile source area is very important for the formation of antimony deposits in South China, whereas organic matter plays a positive role for the extraction and migration of antimony. As a result of Neoproterozoic Oxidation Event, antimony was oxidized to water-soluble SbO3- during supergene weathering. The organic matter, produced by the Ediacara biota is conducive to extracting antimony from water, and precipitating it in reduced sediments (black shale). The Mesozoic magmatic activity in South China baked the surface antimony-rich Cambrian black shale, and the ore-forming fluids produced by magma migrated upward, leaching Sb from black shales or mixing with other ore-forming fluids produced by metamorphic dehydration or melting of the black shale; and then it was transported to a favorable location far from the rock mass to deposit, eventually forming a large-scale antimony ore belt in South China.
WOS研究方向	Geology
语种	英语
出版者	SCIENCE PRESS
WOS记录号	WOS:000533247400006
内容类型	期刊论文
源URL	[http://ir.qdio.ac.cn/handle/337002/167364]
专题	海洋研究所_深海极端环境与生命过程研究中心
通讯作者	Li CongYing
作者单位	1.Pilot Natl Lab Marine Sci & Technol Qingdao, Lab Marine Mineral Resources, Qingdao 266237, Peoples R China 2.Chinese Acad Sci, Ctr Deep Sea Res, Inst Oceanol, Qingdao 266071, Peoples R China 3.Qingdao Inst Marine Geol, MNR Key Lab Gas Hydrate, Qingdao 266071, Peoples R China 4.Chinese Acad Sci, Ctr Ocean Megasci, Qingdao 266071, Peoples R China
推荐引用方式 GB/T 7714	Zhang TianYu,Li CongYing,Sun SaiJun,et al. Geochemical characteristics of antimony and genesis of antimony deposits in South China[J]. ACTA PETROLOGICA SINICA,2020,36(1):44-54.
APA	Zhang TianYu,Li CongYing,Sun SaiJun,&Hao XiLuo.(2020).Geochemical characteristics of antimony and genesis of antimony deposits in South China.ACTA PETROLOGICA SINICA,36(1),44-54.
MLA	Zhang TianYu,et al."Geochemical characteristics of antimony and genesis of antimony deposits in South China".ACTA PETROLOGICA SINICA 36.1(2020):44-54.