Origin of ore-forming fluids in Qinggouzi stibnite deposit, NE China:Constraints from fluid inclusio

来源 :世界地质(英文版) | 被引量 : 0次 | 上传用户:lanxuexiao
下载到本地 , 更方便阅读
声明 : 本文档内容版权归属内容提供方 , 如果您对本文有版权争议 , 可与客服联系进行内容授权或下架
论文部分内容阅读
The Qinggouzi stibnite deposit is located in Huashan Town , Jilin Province , in the northeastern mar-gin of North China Craton (NCC).It is controlled by fault structures , hosted within structurally controlled fel-sic dykes , predominantly surrounded by phyllite , schist and quartzite .This study presents the results of fluid inclusions studies , intending to determine the source of the fluid responsible for ore-formation, hence exploring its metallogenesis .The aqueous biphase inclusions are identified in the stibnite-bearing quartz veins of the de-posit.Moreover, aqueous biphase inclusions are further classified into ① biphase liquid-rich inclusions (1a) and ②biphase gas-rich inclusions (1b) depending upon liquid to gas ratio trapped within the fluid inclusions . Homogenization temperatures for (1a) and (1b) range between 114.8℃to 422℃and 128.3℃to 267.5℃, respectively.1a and 1b have salinities of 0.18%to 16.14%NaCleqv and 1.22%to 12.88%NaCleqv, and den-sity range from 0.43 to 1.02 g/cm3 and 0.81 to 0.98 g/cm3 , respectively .Sulfur isotopic analysis indicatesδ34 SV-CDT from 4.4 ×10 -3 to 6.5 ×10 -3 , with an average of 5.2 ×10 -3 , whereas H isotopes values on δDV-SMOW standard are -100.8 ×10 -3 and -107.5 ×10 -3 , while O isotopes data on δ18 OV-SMOW standard range between 20.1 ×10 -3 and 20.4 ×10 -3 .Fluid inclusions study , combining with sulfur and H-O isotopic data reveal that the ore-forming fluids originated from deep source and were subsequently contaminated by meteoric water .Hy-drostatic pressure calculation shows that the minimum and maximum pressures are 11.65 and 42.33 MPa, and relevant depths of deposit are estimated to be 1.16 and 4.23 km.Finally, we inferred that Qinggouzi stibnite deposit is a medium-low temperature , low salinity hydrothermal deposit , which is formed by deep source and later contaminated by meteoric water , and is classified as epizonal deposit in terms of orogenic series .
其他文献
Phototherapies including photodynamic therapy (PDT) and photothermal therapy (PTF) are the most promising and non-invasive cancer treatments.However,the efficac
The isoselective ring-opening polymerization of racemic lactide was achieved by combining N-heterocyclic olefin (NHO) with mono(thio)ureas or bis(thio)ureas as
The synthesis of block copolymers of poly(tetrahydrofuran)-b-poly(a-amino acid) (PTHF-b-PAA) is challenging since it is difficult to combine the two blocks prod
It is a challenge to identify each phase in a multi-component polymer system and uniquely determine the interfacial properties between the different phases.Usin
Soluble Hf-containing polymers are significant processable precursors for the fabrication of ultra-high temperature ceramics.In this work,cyclic Hf-Schiff base
The polyacidic character of polyoxometalate (POM) clusters endows high ionic conductivity,making these clusters good candidates for solar and fuel cells.Covalen
Acrylonitrile rubber (NBR) composites filled with barium titanate (BT) were prepared using an internal mixer and a two-roll mill.Also,a secondary filler,namely
The crystallization and melting behavior of polymers is of theoretical importance.In this work,poly(butylene succinate) (PBS) was selected as an example to stud
It remains a challenge to use a simple approach to fabricate a multi-shape memory material with high mechanical performances.Here,we report a triple crosslinkin
Polymers are crucial constituents of modern electronic devices.They can be used in their pristine,composite or nanocomposite forms for several domestic and indu