Knowledge Management System Of Guangzhou Institute of Geochemistry，CAS
Liu, Bingbing1,2,4; Yan, Qing-He1,2; Wang, He3
| |
| Origin of metallogenic fluids and materials of the Tashan porphyry host tin deposit, eastern Guangdong, Southeast China: Constraints from fluid inclusions, H-O, S, Pb, and He-Ar isotopes | |
| Source Publication | ORE GEOLOGY REVIEWS
 |
| ISSN | 0169-1368 |
| 2023-07-01 | |
| Volume | 158Pages:15 |
| DOI | 10.1016/j.oregeorev.2023.105517 |
| Language | 英语 |
| WOS Research Area | Geology ; Mineralogy ; Mining & Mineral Processing |
| Abstract | The Tashan deposit is hosted and genetically associated with the highly fractionated A-type granite porphyry formed at ca. 138 Ma. Its Sn metallogenic processes can be subdivided into three stages: biotite-K-feldspar-cassiterite (stage I, main Sn mineralization), quartz-cassiterite (stage II), and chlorite-sulphides (stage III). Fluid inclusion study indicates that the hydrothermal fluids from stage I (salinity = 5.2-12.8 wt%, and Th = 303-376 degrees C) through stage II (salinity = 2.7-10.9 wt%, and Th = 236-313 degrees C) to stage III (salinity = 1.7-8.5 wt %, and Th = 192-262 degrees C) are of H2O-CO2-salt composition and its temperature and salinity from early to late stages tend to decrease. The H and O isotopes of quartz from stage II and stage III show & delta;Dwater values in the range of -66.7 to -60.5%o and -52.8 to -39.6%o, and & delta;18O (%o) values in the range of 6.7 to 7.3%o and 5.8 to 6.9%o, respectively, suggesting contributions of both magmatic fluids and meteoric water. Inclusion-trapped fluids in stage II pyrite show 3He/4He, Hemantle (%), and 40Ar/36Ar values of 0.07-0.35 Ra, 0.76%-4.28%, and 302.6-309.0, respectively, indicating that the metallogenic fluids were derived mainly from crustal sources, with minor proportions of mantle source input (<4.28%), consistent with the magma sources of the granite porphyry. Lead isotopes indicate that there is no difference for 206Pb/204Pb, 207Pb/204Pb, and 208Pb/204Pb ratios between the sulfide minerals from the orebodies and the fertile granites parental to Sn mineralization in Eastern Guangdong, indicating a magmatic Pb origin. Sulfur isotopic values obtained from sulfides are in the range of -4.5%o to 0.4%o (average, -1.7%o), implying an initially of magmatic origin with some contamination of sedimentary sulfur through the interaction with sedimentary rocks of Jinji Formation (-6.67 to -2.41%o). Fluid boiling and mixing with meteoric water were considered likely to be the possible mechanism for the ore precipitation in Tashan deposit. |
| Keyword | Tashan Sn deposit South China Fluid inclusion H-O-S-Pb-He-Ar isotopes Metallogenic fluid |
| WOS ID | WOS:001025638800001 |
| Indexed By | SCI |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.gig.ac.cn/handle/344008/74461 |
| Collection | 中国科学院矿物学与成矿学重点实验室 |
| Corresponding Author | Yan, Qing-He; Wang, He |
| Affiliation | 1.Yunnan Univ, Sch Earth Sci, Dept Geol, Kunming 650091, Peoples R China 2.Yunnan Int Joint Lab Crit Mineral Resource, Kunming 650500, Peoples R China 3.Chinese Acad Sci, Guangzhou Inst Geochem, CAS Key Lab Mineral & Metallogeny, Guangzhou 510640, Peoples R China 4.Lingnan Normal Univ, Sch Geog Sci, Zhanjiang 524048, Peoples R China |
| Recommended Citation GB/T 7714 | Liu, Bingbing,Yan, Qing-He,Wang, He. Origin of metallogenic fluids and materials of the Tashan porphyry host tin deposit, eastern Guangdong, Southeast China: Constraints from fluid inclusions, H-O, S, Pb, and He-Ar isotopes[J]. ORE GEOLOGY REVIEWS,2023,158:15. |
| APA | Liu, Bingbing,Yan, Qing-He,&Wang, He.(2023).Origin of metallogenic fluids and materials of the Tashan porphyry host tin deposit, eastern Guangdong, Southeast China: Constraints from fluid inclusions, H-O, S, Pb, and He-Ar isotopes.ORE GEOLOGY REVIEWS,158,15. |
| MLA | Liu, Bingbing,et al."Origin of metallogenic fluids and materials of the Tashan porphyry host tin deposit, eastern Guangdong, Southeast China: Constraints from fluid inclusions, H-O, S, Pb, and He-Ar isotopes".ORE GEOLOGY REVIEWS 158(2023):15. |
| Files in This Item: | There are no files associated with this item. | |||||
Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.
Edit Comment