Mineralogical features of tourmaline in Baiyinchagan Sn-Ag-Pb-Zn deposit, southern Great Xing'an Range, and its implications for magmatic-hydrothermal evolution.
文献类型：期刊论文
| 作者 | Li ZhenZhen1,5,6; Qin KeZhang3,4,5; Pei Bin2; Zhao JunXing3,4,5; Shi RuiZhe3,4,5; Zhao ZeLong2; Han Ri3,4,5 |
| 刊名 | ACTA PETROLOGICA SINICA
 |
| 出版日期 | 2020 |
| 卷号 | 36期号:12页码:3797-3812 |
| 关键词 | Baiyinchagan Sn-Ag-Zn-Pb deposit Tourmaline Growth zoning Magmatic-hydrothermal evolution |
| ISSN号 | 1000-0569 |
| DOI | 10.18654/1000-0569/2020.12.14 |
| 英文摘要 | Baiyinchagan deposit, which is located at West Ujimqin Banner, Inner Mongolia, is the largest and most typical Sn-Ag-Zn-Pb deposit in the tin ore belt of southern Geart Xing'an Range. Abundant tourmalines occur in ore-related granite porphyries and wallrocks in this deposit. They can be classified into four different occurrences, including: Type I tourmaline nodules, type II cement tourmalines in hydrothermal breccias, type III tourmalines in hydrothermal veins and type IV disseminated tourmalines. In this paper, chemistry of tourmalines from various occurrences and textures are studied by using electron microprobe analysis and map scanning based on their petrographic features. The type I tourmalines in nodules from deep granite porphyries are featured by euhedral shape and complex growth zonings. At least three zonings are identified from core to rim. The core tourmalines have very high values of Fe/(Fe + Mg) and Al, implying their magmatic origin, whereas the rim tourmalines are rich in Mg and intergrowth with hydrothermal minerals, indicating they precipitated from hydrothermal fluids. The textures and chemistry of mantle tourmalines should relate to immiscible B-Fe-Na melt or fluid. Thus, the tourmaline nodules may record the whole evolution process from late magmatic to very early hydrothermal stage. However, the type I tourmalines in nodules from the upper granite porphyry are lack of zoning, and the mineral assemblages and chemistry indicate these tourmalines should be associated with hydrothermal process. It is possible they represent the residual early hydrothermal fluids that accumulated at the top of magma and locked by crystallizing magma. Subsequently, massive released B-rich fluid from granite porphyry generates hydrothermal breccias cement by tourmalines, pre-ore mineralization tourmaline-quartz veins and disseminated tourmalines via wallrock alteration. Based on the analysis of tourmaline growth zonings existing in hydrothermal breccias and veins, it is possible that multiple pluses of fluids with varying composition may overprint at pre-ore mineralization stage. Meanwhile, the Mg-rich evolution trend of tourmaline from early to late stage and the wallrock-controlled composition feature, implying that the water-rock interaction between hydrothermal fluid and wallrock plays an important role on the metal mineralization in this deposit. Furthermore, according to the various textures and chemistry among different occurrence of tourmalines, this study reveals that tourmaline can record some detailed information related to magmatic-hydrothermal transition and hydrothermal evolution, and it is helpful to promote our understanding of ore-forming process. |
| WOS关键词 | TIN POLYMETALLIC DEPOSITS ; INNER-MONGOLIA ; U-PB ; ISOTOPE SYSTEMATICS ; FLUID EVOLUTION ; PORPHYRY SN ; MINERALIZATION ; BORON ; INDICATOR ; GRANITE |
| WOS研究方向 | Geology |
| 语种 | 英语 |
| WOS记录号 | WOS:000605101000014 |
| 出版者 | SCIENCE PRESS |
| 源URL | [http://ir.iggcas.ac.cn/handle/132A11/100005]  |
| 专题 | 地质与地球物理研究所_中国科学院矿产资源研究重点实验室 |
| 通讯作者 | Li ZhenZhen |
| 作者单位 | 1.China Inst Disaster Prevent, Sanhe 065201, Peoples R China 2.Yinman Min Co Ltd, West Ufimqin Banner 026200, Xilingol, Peoples R China 3.Univ Chinese Acad Sci, Coll Earth & Planetary Sci, Beijing 100049, Peoples R China 4.Chinese Acad Sci, Innovat Acad Earth Sci, Beijing 100029, Peoples R China 5.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Mineral Resources, Beijing 100029, Peoples R China 6.Hebei Key Lab Earthquake Dynam, Sanhe 065201, Peoples R China |
| 推荐引用方式 GB/T 7714 | Li ZhenZhen,Qin KeZhang,Pei Bin,et al. Mineralogical features of tourmaline in Baiyinchagan Sn-Ag-Pb-Zn deposit, southern Great Xing'an Range, and its implications for magmatic-hydrothermal evolution.[J]. ACTA PETROLOGICA SINICA,2020,36(12):3797-3812. |
| APA | Li ZhenZhen.,Qin KeZhang.,Pei Bin.,Zhao JunXing.,Shi RuiZhe.,...&Han Ri.(2020).Mineralogical features of tourmaline in Baiyinchagan Sn-Ag-Pb-Zn deposit, southern Great Xing'an Range, and its implications for magmatic-hydrothermal evolution..ACTA PETROLOGICA SINICA,36(12),3797-3812. |
| MLA | Li ZhenZhen,et al."Mineralogical features of tourmaline in Baiyinchagan Sn-Ag-Pb-Zn deposit, southern Great Xing'an Range, and its implications for magmatic-hydrothermal evolution.".ACTA PETROLOGICA SINICA 36.12(2020):3797-3812. |
入库方式： OAI收割
来源：地质与地球物理研究所
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