气候变化领域集成服务门户(CCPortal): Fluid evolution and genesis of the Zhuanghuhe Au-Sb mineralization in the Duobaoshan orefield, Northeast China: Evidence from fluid inclusions and H-O-C isotopes

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DOI	10.1016/j.chemer.2023.126048
	Fluid evolution and genesis of the Zhuanghuhe Au-Sb mineralization in the Duobaoshan orefield, Northeast China: Evidence from fluid inclusions and H-O-C isotopes
	Xue, Han -wen; Wang, Ke-yong; Geng, Jian-zhen; Fan, Si -wen; Chen, Jun -chi; Wang, Xue
发表日期	2024
ISSN	0009-2819
EISSN	1611-5864
起始页码	84
结束页码	1
卷号	84 期号:1
英文摘要	The newly discovered Zhuanghuhe Au-Sb occurrence is located 20 km north of the famous Duobaoshan Cu-Mo deposit, it is the first gold-antimony deposit discovered in the Duobaoshan orefield. The hydrothermal quartz vein-type orebodies occur in the Middle Ordovician Duobaoshan Formation and are controlled by NNW and ENE compressional faults. Four mineralization stages are identified: stage I quartz + pyrite + arsenopyrite, stage II quartz + polymetallic sulfides, stage III quartz + stibnite, and stage IV quartz + calcite. Fluid inclusions (FIs) in quartz and calcite veins include six types: types I (two-phase aqueous), IIa (aqueous-carbonic; the volume of the carbon phase <50 %), IIb (aqueous-carbonic; the volume of the carbon phase >50 %, with more CO2 than CH4), IIc (aqueous-carbonic; the volume of the carbon phase >50 %, with more CH4 than CO2), IIIa (carbonic, with more CO2 than CH4) and IIIb (carbonic, with more CH4 than CO2). FIs of stage I are types I, IIa, IIb and IIIa, with homogenization temperatures of 279-311 degrees C and salinities of 4.87-11.84 wt%, indicating a medium-temperature low-salinity immiscible NaCl-H2O-CO2 fluid system. Stage II contains all FI types with final homogenization temperatures of 233-288 degrees C and salinities of 4.94-8.67 wt%, indicating a medium- to low-temperature low-salinity NaCl-H2O-CO2-CH4 system. FIs of stage III contain types I and IIa with homogenization temperatures of 193-240 degrees C and salinities of 3.85-6.63 wt%, belong to a low-temperature low-salinity NaCl-H2O-CO2 +/- CH4 system. FIs of stage IV contain only type I with homogenization temperatures of 158-212 degrees C and salinities of 2.56-4.01 wt%, indicating a NaCl-H2O system. The H-O-C isotope data show that the NaCl-H2O-CO2 fluids of stage I (delta D = -98 to -105.7 parts per thousand, delta O-H(2)O = 5.7 to 6.9 parts per thousand, delta C-13(CO)2 = -11.9 to -11.1 parts per thousand) were derived from a magmatic system, the fluids of stage II (delta D = -85.7 parts per thousand, delta O-H(2)O = 2.8 parts per thousand, delta C-13(CO)2 = -14.2 parts per thousand, delta C-13(CH)4 = -32.5 to -31.9 parts per thousand) were characterized by the addition of CH4, which might have come from the reaction between the original ore-forming fluids and carbonaceous slate of the Duobaoshan Formation. The fluids in stage III (delta D = -90.2 to -89.6 parts per thousand, delta O-H(2)O = -9.1 to -6.1 parts per thousand) and stage IV (delta D = -110.6 to -96.3 parts per thousand, delta O-H(2)O = -13.0 to -12.6 parts per thousand) were characterized by mixing of meteoric water. According to the geology, fluid inclusion and H-O-C stable isotope evidences, the initial magma-derived NaCl-H2O-CO2 fluids were immiscible in stage I and then the process of mixing with CH4-bearing fluids in stage II, resulting in the gold precipitation; the precipitation of antimony was mainly related to the temperature drop and the mixing of meteoric water in stage III.
英文关键词	Fluid evolution; Au - Sb mineralization; Zhuanghuhe deposit; Duobaoshan orefield; H - O - C isotopes
语种	英语
WOS研究方向	Geochemistry & Geophysics
WOS类目	Geochemistry & Geophysics
WOS记录号	WOS:001215078300001
来源期刊	GEOCHEMISTRY
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/306861
作者单位	Jilin University; Xinjiang University
推荐引用方式 GB/T 7714	Xue, Han -wen,Wang, Ke-yong,Geng, Jian-zhen,et al. Fluid evolution and genesis of the Zhuanghuhe Au-Sb mineralization in the Duobaoshan orefield, Northeast China: Evidence from fluid inclusions and H-O-C isotopes[J],2024,84(1).
APA	Xue, Han -wen,Wang, Ke-yong,Geng, Jian-zhen,Fan, Si -wen,Chen, Jun -chi,&Wang, Xue.(2024).Fluid evolution and genesis of the Zhuanghuhe Au-Sb mineralization in the Duobaoshan orefield, Northeast China: Evidence from fluid inclusions and H-O-C isotopes.GEOCHEMISTRY,84(1).
MLA	Xue, Han -wen,et al."Fluid evolution and genesis of the Zhuanghuhe Au-Sb mineralization in the Duobaoshan orefield, Northeast China: Evidence from fluid inclusions and H-O-C isotopes".GEOCHEMISTRY 84.1(2024).