Geology, mineralogy, geochemistry, and zonation of the Bajiazi;dolostone-hosted Zn-Pb-Ag skarn deposit, Liaoning Province, China

doi:10.1016/S0169-1368(03)00034-9

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	Geology, mineralogy, geochemistry, and zonation of the Bajiazi;dolostone-hosted Zn-Pb-Ag skarn deposit, Liaoning Province, China
	Zhao, YM 3; Dong, YG ; Li, DX ; Bi, CS
刊名	ORE GEOLOGY REVIEWS
	2003
卷号	23 期号:3-4 页码:153-182
关键词	zonation mineralogy manganoan skarn Zn-Pb-Ag deposit Bajiazi, China
ISSN号	0169-1368
DOI	10.1016/S0169-1368(03)00034-9
英文摘要	The Bajiazi Zn-Pb-Ag skarn deposit is located in northwest Liaoning Province, China. The orebodies occur in a contact zone between Yanshanian (170-177.4 Ma) quartz monzodiorite and Middle Proterozoic dolomitic marble of the Gaoyuzhuang Formation as well as along the NW- and NS-trending fault systems in carbonate wall rocks.;Metasomatic mineralization zoning in the deposit is very pronounced. From the intrusive contact zone to dolomitic marble along the NW-trending fault system, three ore-bearing skarn zones may be distinguished: magnesian skarn zone (FeMo) --> manganoan-magnesian skarn zone (Cu-S-Fe-Pb-Zn-Ag) --> manganoan skarn zone (Zn-Pb-Ag). Magnesian skarn is composed of diopside, forsterite, tremolite, spinel, phlogopite, chondrodite, and serpentine, accompanied by magnetite, pyrite, and molybdenite. Manganoan-magnesian skarn consists mainly of manganoan diopside, manganoan tremolite, mangano-anthophyllite, and manganocummingtonite with minor spessartine and pyroxmangite, The associated ore minerals are pyrite, pyrrhotite, and chalcopyrite, with subordinate magnetite, sphalerite, galena, and Ag-bearing minerals. Manganoan skarn is composed chiefly of spessartine, pyroxmangite, magnesian rhodonite, manganocummingtonite, and manganopyrosmalite, with the associated ore minerals sphalerite, galena, alabandite, and Ag-bearing minerals.;Studies of fluid inclusions and S, Ph, O, and H isotopic compositions suggest that ore-bearing fluids flowed from the deep contact zone of the intrusion in the southeast to the shallow depth in the northwest with decreasing temperatures, oxidation state, and increasing pH. When the ore-bearing fluids migrated, their frontal part constantly reacted with the dolomitic carbonate wall rocks to form different types of skarn and mineralization. Sulfur and lead (zinc) were mainly derived from the deep lower crust, while the Middle Proterozoic wall rocks may have provided most Al, Si, Mg, Ca, and Mn for the formation of skarns.;The zonal model reflecting the variations in metallization assemblage, skarn mineralogy, composition, delta(34)S isotope values, and fluid inclusion characteristics can be used as a guide to exploration for Zn-Pb-Ag skarn deposits. (C) 2003 Elsevier B.V. All rights reserved.
学科主题	矿床地质
WOS关键词	OXYGEN ISOTOPE GEOTHERMOMETRY ; HYDROGEN ISOTOPE ; BEARING SKARN ; FRACTIONATION ; GENESIS ; WATER ; EVOLUTION ; DISTRICT ; SULFUR ; ROCKS
WOS研究方向	Geology ; Mining & Mineral Processing
语种	英语
出版者	ELSEVIER SCIENCE BV
WOS记录号	WOS:000186690500005
内容类型	期刊论文
源URL	[http://119.78.100.197/handle/2HKVOGP0/37573]
专题	中国地质调查局南京地质调查中心
作者单位	1.Chinese Acad Geol Sci, Inst Mineral Resources, Beijing 100037, Peoples R China. 2.China Geol Survey, Nanjing Inst Geol & Mineral Resources, Nanjing, Peoples R China. 3.中国地质科学院矿产资源研究所
推荐引用方式 GB/T 7714	Zhao, YM,Dong, YG,Li, DX,et al. Geology, mineralogy, geochemistry, and zonation of the Bajiazi;dolostone-hosted Zn-Pb-Ag skarn deposit, Liaoning Province, China[J]. ORE GEOLOGY REVIEWS,2003,23(3-4):153-182.
APA	Zhao, YM,Dong, YG,Li, DX,&Bi, CS.(2003).Geology, mineralogy, geochemistry, and zonation of the Bajiazi;dolostone-hosted Zn-Pb-Ag skarn deposit, Liaoning Province, China.ORE GEOLOGY REVIEWS,23(3-4),153-182.
MLA	Zhao, YM,et al."Geology, mineralogy, geochemistry, and zonation of the Bajiazi;dolostone-hosted Zn-Pb-Ag skarn deposit, Liaoning Province, China".ORE GEOLOGY REVIEWS 23.3-4(2003):153-182.