Ore Geology Reviews最新文献

{"title":"Shallow crustal velocity structure beneath the Xiangshan and Yuhuashan volcanic basins in South China: Implications for the metallogenic setting of the volcanic-related uranium deposit","authors":"Binjun Zhai ,&nbsp;Juzhi Deng ,&nbsp;Hui Yu ,&nbsp;Xiangteng Wang ,&nbsp;Hui Chen ,&nbsp;Qingfei Wang","doi":"10.1016/j.oregeorev.2025.106551","DOIUrl":"10.1016/j.oregeorev.2025.106551","url":null,"abstract":"<div><div>The Xiangshan volcanic basin hosts the largest volcanic-related uranium deposit in China, while the adjacent Yuhuashan volcanic basin contains only one small uranium deposits. To better understand the metallogenic setting of volcanic-related uranium deposit in the study area, ambient noise data was collected from 142 mobile stations with average spacing about 4 km and 2128 phase velocity dispersion curves were extracted by the two-station method. A shallow crustal shear velocity model was obtained by the direct inversion method of surface wave dispersion. As imaged by the velocity model, the shallow (1.0–2.0 km) high-velocity anomalies correspond to the metamorphic rocks exposed in the Xiangshan and Yuhuashan volcanic basins, whereas the low-velocity anomalous zone with NE trending matches well with the distribution range of the Late Cretaceous red beds. With the deepening of the depth, the Xiangshan volcanic basin exhibits medium to high velocities, while the Yuhuashan volcanic basin demonstrates low velocities. These noticeable structural variations are interpreted to the different tectonic-magmatic activities had occurred in two regions. Based on the inferred basement faults and the strike-slip pull-apart process originated from the NE-trending Fuzhou-Yongfeng Fault, we reveal that the contact zone between the basement faults could have contributed to the emplacement of the uranium-producing volcanic basin, while the faults developed within volcanic cover could have provided favorable conditions for the migration and enrichment of ore-forming fluids. Given that the thickness of overlying volcanic rocks in the Yuhuashan volcanic basin is thicker than that in the Xiangshan volcanic basin, it is speculated that the deep part of the Yuhuashan volcanic basin has better uranium mineralization potential.</div></div>","PeriodicalId":19644,"journal":{"name":"Ore Geology Reviews","volume":"180 ","pages":"Article 106551"},"PeriodicalIF":3.2,"publicationDate":"2025-03-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143641760","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Comment on “Mineralization age of the Xiangshan uranium ore field, South China redefined by hydrothermal apatite U-Pb geochronology” by Wang et al., (Ore Geology Reviews, 2023, https://doi.org/10.1016/j.oregeorev.2023.105586)","authors":"Suwen Zhu ,&nbsp;Guangrong Li ,&nbsp;Yun Wang ,&nbsp;Fusheng Guo ,&nbsp;Ao Qin","doi":"10.1016/j.oregeorev.2025.106549","DOIUrl":"10.1016/j.oregeorev.2025.106549","url":null,"abstract":"<div><div>Recently，Wang et al., (2023) published their apatite U-Pb ages from Xiangshan uranium ore field, South China and concluded that uranium mineralization age is synchronously formed to the hosting rock. This conclusion presents a significant departure from traditional views and offers novel insights into the timing of uranium mineralization. This paper raises evidence based on our research results in Xiangshan area in the past decade. Firstly, field observations indicate that uraniferous veins cut the well crystallized volcanic complex, suggesting a later hydrothermal event. Additionally, the synchronicity of apatite formation with uranium enrichment is questioned, as type 2 apatite crystals show complex relationships with uranium minerals. Discrepancies in previous U-Pb dates on U-minerals and Ar-Ar dates are discussed as well, and the result suggests that the age of volcanic complex hosting uranium minerals is mainly concentrated between 130 and 145 Ma, and the time difference between mineralization and diagenesis varies greatly. The paper emphasizes the need to reconcile the differences between various dating methods to accurately determine the mineralization age.</div></div>","PeriodicalId":19644,"journal":{"name":"Ore Geology Reviews","volume":"180 ","pages":"Article 106549"},"PeriodicalIF":3.2,"publicationDate":"2025-03-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143641768","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Dual length-scale modelling of the formation mechanism relevant to the Caixiashan Pb-Zn deposit, Xinjiang, China: Effects of regional-model bottom boundary-conditions on mineralization patterns","authors":"Yao Liu ,&nbsp;Gaozhi Liu ,&nbsp;Chongbin Zhao","doi":"10.1016/j.oregeorev.2025.106547","DOIUrl":"10.1016/j.oregeorev.2025.106547","url":null,"abstract":"<div><div>The Caixiashan Pb-Zn deposit is located in the polymetallic metallogenic belt, which belongs to the Central Tianshan Terrane, Xinjiang, China. Although extensive field observation and laboratory experiment studies of using traditional geological, geochemical and geophysical methods were carried out for investigating the mineralization system relevant to the Caixiashan Pb-Zn deposit, no research work has been conducted, to date, to simulate the ore-forming processes of this particular deposit through using advanced numerical-modelling methods. In order to fill this gap, this study utilizes the recently-proposed numerical-modelling approach of utilizing dual length-scale models, which contains a deposit (small length-scale) model and a regional (large length-scale) model and uses the finite element method (FEM) as well, to numerically simulate the hydrothermal ore-forming processes relevant to the Caixiashan Pb-Zn deposit. Special consideration is concentrated on investigating the effects of the regional-model bottom boundary-conditions on the formation of the Caixiashan Pb-Zn deposit. The key findings of this study have elucidated that: (1) the convection of pore-fluid is the predominant dynamic mechanism, which controls the formation of the Caixiashan Pb-Zn deposit; (2) although the numerically-simulated grade of the Caixiashan Pb-Zn deposit may depend on the regional-mode bottom boundary-conditions, the numerically-simulated location of this deposit does not; (3) the numerical-modelling approach of utilizing dual length-scale models is very useful in numerically modelling the formation mechanism relevant to the Caixiashan Pb-Zn deposit.</div></div>","PeriodicalId":19644,"journal":{"name":"Ore Geology Reviews","volume":"180 ","pages":"Article 106547"},"PeriodicalIF":3.2,"publicationDate":"2025-03-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143632230","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Coloration mechanism of Fe in sphalerite based on LA-ICP-MS and DFT: A case study of the Huize super-large Ge-rich Ag–Pb–Zn deposit in Sichuan–Yunnan–Guizhou","authors":"Yanhong Liu,&nbsp;Runsheng Han,&nbsp;Yan Zhang,&nbsp;Yi Chen,&nbsp;Jianbiao Wu","doi":"10.1016/j.oregeorev.2025.106550","DOIUrl":"10.1016/j.oregeorev.2025.106550","url":null,"abstract":"<div><div>The Fe content is a crucial factor influencing the color of sphalerite. This study focuses on sphalerite from the Huize super-large Ge-rich Ag–Pb–Zn deposit in the Sichuan–Yunnan–Guizhou border region. Based on LA-ICP-MS in-situ analysis and quantum chemical calculations using Density Functional Theory (DFT), we investigated the Fe–Zn substitution patterns and their impact on sphalerite color, identified the isomorphous and interstitial doping modes of iron in sphalerite, and further elucidated the coloration mechanism and mineralization process of sphalerite. The research shows that black sphalerite from the Baizuo Formation in this deposit has the highest Fe content, while red-brown sphalerite from the Dengying Formation has the highest Fe content among its counterparts. When the number of Fe atoms in the ZnS electronic structure exceeds six, the reflection coefficient in the red-brown spectral range is significantly higher than that in other visible light bands, while the absorption coefficient is lower. The isomorphous substitution and interstitial insertion of Fe in sphalerite are key factors leading to its color variation. Fe predominantly enters the (110) and (100) cleavage planes in the form of isomorphous substitution, forming isomorphous mixed crystals, with the (110) cleavage plane being more sensitive to Fe substitution. The study suggests that the mineralization temperature corresponding to different mineralization stages affects the Fe content in sphalerite, which in turn determines its color presentation. This further supports the evolution process of the ore-forming fluid from medium–to–high temperature, and low salinity to medium temperature, and medium salinity, and finally to low temperature, and medium–to–low salinity. This paper provides a new theoretical perspective for revealing the coloration mechanism of sphalerite.</div></div>","PeriodicalId":19644,"journal":{"name":"Ore Geology Reviews","volume":"180 ","pages":"Article 106550"},"PeriodicalIF":3.2,"publicationDate":"2025-03-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143704698","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Formation of the Mahuaping Be–W–F deposit in South China: Evidence from beryl chemistry, wolframite and monazite U–Pb dating","authors":"Wen-Chang Li ,&nbsp;Qing-Gao Yan ,&nbsp;Hua-Wen Cao ,&nbsp;Sheng Li ,&nbsp;Fu-Cheng Yang ,&nbsp;Xiao-Jun Jiang","doi":"10.1016/j.oregeorev.2025.106553","DOIUrl":"10.1016/j.oregeorev.2025.106553","url":null,"abstract":"<div><div>The Mahuaping deposit, hosted within metasedimentary rocks, is a large-scale Be–W–F deposit in the Sanjiang region, distinguished by a unique mineral assemblage that includes beryl, scheelite, wolframite euclasite, fluorite, calcite, and quartz, among others. However, its genetic model remains a subject of debate, particularly regarding whether mineralization was sourced from granite-derived fluids or metamorphic hydrothermal systems. The precise formation age of the Mahuaping deposit can be reliably determined through in-situ U–Pb dating of wolframite and monazite using laser ablation-inductively coupled plasma-mass spectrometry (LA-ICP-MS). Wolframite U–Pb dating yield an age of 30.6 ± 0.5 Ma (2σ, MSWD = 0.74), closely aligning with the monazite U–Pb age of 29.4 ± 0.3 Ma (2σ, MSWD = 0.63). These results indicate that the Mahuaping deposit formed during the Late Paleogene. Given its temporal similarity to porphyry-related Cu–Au–Mo deposits associated with intracontinental transpression in the Sanjiang region, as well as multi-stage mineral textures and the variability in FeO (0.09–1.68 wt%) and Na₂O (0.59–2.05 wt%) contents in beryl, we propose that the Mahuaping Be–W–F deposit was formed by magmatic-hydrothermal fluids. Under this magmatic-hydrothermal model, we suggest that the Sanjiang region holds significant potential for additional economic Be–W–F mineralization. Furthermore, this study highlights that, in addition to the well-documented Cu–Au–Mo mineralization event, the Late Paleogene also witnessed a notable Be–W–F mineralization episode, thereby expanding the metallogenic framework of the Sanjiang region and providing critical insights for future exploration.</div></div>","PeriodicalId":19644,"journal":{"name":"Ore Geology Reviews","volume":"179 ","pages":"Article 106553"},"PeriodicalIF":3.2,"publicationDate":"2025-03-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143620269","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Gallium- and germanium-rich sphalerite in the Sichuan-Yunnan-Guizhou region: Insights from the Fule carbonate-hosted Pb-Zn deposit","authors":"Lei Wang ,&nbsp;Yan Zhang ,&nbsp;Runsheng Han ,&nbsp;Dianwen Liu ,&nbsp;Yi Chen","doi":"10.1016/j.oregeorev.2025.106555","DOIUrl":"10.1016/j.oregeorev.2025.106555","url":null,"abstract":"<div><div>The Sichuan-Yunnan-Guizhou (SYG) region hosts significant resources of critical metals gallium (Ga) and germanium (Ge), which are essential to the development of green technologies. The content and distribution of Ga and Ge in sphalerite from the carbonate-hosted Pb-Zn Fule deposit in this region need to be evaluated. Based on laser ablation-inductively coupled plasma-mass spectrometry analysis, we investigate Ga, Ge, and other minor and trace element composition in different types of sphalerite from this deposit. Two major mineralization stages (I and II) were recognized in hydrothermal period. The highest Ga (mean 218 ppm) and Ge (mean 760 ppm) contents were both found in reddish-brown sphalerite (Sp1<em>rb</em>) formed in stage I. Varicolored sphalerite (Sp2) deposited in stage II and white sphalerite (Sp1<em>w</em>) formed in stage I exhibit the lowest Ga (mean 0.25 ppm) and Ge (mean 13.2 ppm) contents, respectively. Trace element content correlations reveal Ga incorporation via direct substitution and Ge incorporation via substitution coupled to monovalent copper ion. Additionally, the sphalerite color variations (reddish-brown, yellow, and white) at Fule are related to the contents of Cu, Ga, Ge, As, and Sb. Compared to sphalerite in the other typical Pb-Zn deposits in the SYG region, sphalerite from the Fule deposit is more enriched in Ga and Ge. Considering the close spatial relationship between the Fule deposit and the Emeishan basalts, we propose that the Emeishan basalts may have contributed additional Ga and Ge to this deposit.</div></div>","PeriodicalId":19644,"journal":{"name":"Ore Geology Reviews","volume":"179 ","pages":"Article 106555"},"PeriodicalIF":3.2,"publicationDate":"2025-03-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143620270","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Ridge subduction identified within the ancient Tianshan Ocean: Evidence from temporal variations of magmatism in the Tuwu-Yandong porphyry Cu belt, NW China","authors":"Yun-feng Wang ,&nbsp;Bing Xiao ,&nbsp;Shuqi Gao ,&nbsp;Wei Wang","doi":"10.1016/j.oregeorev.2025.106548","DOIUrl":"10.1016/j.oregeorev.2025.106548","url":null,"abstract":"<div><div>Our knowledge of the many magmatic episodes and porphyry Cu belts north of the Kangguer Shear Zone in the Eastern Tianshan region is complicated by the ongoing controversy over the mechanism of the Tianshan Oceanic plate subducting during the Carboniferous epoch. Within the well-known Tuwu–Yandong porphyry Cu belt, we offer new zircon U–Pb dates, Hf isotopes, whole-rock geochemistry, and whole-rock Sr–Nd isotopes for granite porphyry, quartz diorite porphyry, and diorite. These findings shed light on I- and A-type granitoids as well as slab-derived adakites, offering fresh perspectives on the Tianshan Oceanic plate’s subduction process. The majority of the adakites are diorite and quartz diorite porphyry (334–331 Ma), which have low Y and Yb contents, high Sr concentrations, and higher Sr/Y ratios. These rocks yielded high positive zircon ε_Hf(t) values (+10.3 to +14.1) and whole-rock ε_Nd(t) (+6.8 to +7.5) values. The adakitic diorite is thought to originate from the melting of the oceanic slab, while the subsequent quartz diorite porphyry formed through fractional crystallization of the dioritic magma. The A-type granite porphyry (331 Ma) displays high contents of SiO₂ and Fe₂O₃^T, along with increased Zr concentrations and zircon saturation temperatures. This rock type also possesses zircon ε_Hf(t) (+10.5 to +11.8) and whole-rock ε_Nd(t) (+6.4 to +6.6) values, derived from the partial melting of the juvenile crust. The late I–type granite porphyry (322 Ma) is characterized by high SiO₂ and low P₂O₅ contents, as well as positive ε_Hf(t) values (+9.5 to +13.2) and whole-rock ε_Nd(t) values (+5.9 to +7.0). These rocks originated from the juvenile crust and underwent significant fractional crystallization. Our new data suggest that the ancient Tianshan Oceanic plate experienced a slab window during its northward subduction in the Carboniferous, creating a regional extensional setting. Through a detailed analysis of temporal variations in the regional magmatic rocks, we identified a distinguishable rock association of Nb-enriched, high-Mg, slab-derived adakites, and A-type rocks in the northern area of the Kangguer Shear Zone between 340 and 330 Ma. These rocks, along with the coeval regional porphyry Cu deposits, indicate the occurrence of a ridge subduction during that time.</div></div>","PeriodicalId":19644,"journal":{"name":"Ore Geology Reviews","volume":"180 ","pages":"Article 106548"},"PeriodicalIF":3.2,"publicationDate":"2025-03-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143654523","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Geochemistry of cassiterite and skarn minerals as indicators for formation mechanism and fluid evolution of the newly discovered Jinshui skarn tin deposit in the East Kunlun orogenic belt, NW China","authors":"Xing-Kai Zhang ,&nbsp;Shao-Yong Jiang ,&nbsp;Hui-Min Su ,&nbsp;Wei Wang ,&nbsp;Qinglin Xia ,&nbsp;Yunpeng Liu ,&nbsp;Shien Li","doi":"10.1016/j.oregeorev.2025.106541","DOIUrl":"10.1016/j.oregeorev.2025.106541","url":null,"abstract":"<div><div>Discovery of the Jinshui skarn-type tin deposit marked the first instance of a tin deposit to be uncovered in the central segment of the East Kunlun Orogenic Belt (EKOB) in northwestern China. To determine the timing of tin mineralization and elucidate the progression of the ore-forming hydrothermal system, we conducted geochronology of cassiterite and trace element analysis on various minerals hosted in skarn ores. The U–Pb dating results of the cassiterite indicate that tin mineralization took place at 392.9 ± 5.8 Ma, which closely aligns with the syenogranite emplacement at 396.1 ± 2.1 Ma in the Jinshui deposit. This correlation suggests a temporal link between tin mineralization and granitic magmatism. The deposit is characterized by two generations of cassiterite, with trace element analyses consistently showing that the dark cathodoluminescent cores have relatively high W and U concentrations, whereas the bright rims are enriched in Sc, Ti, V, Zr, In, and Hf. Additionally, the Zr/Hf ratios confirm that the syenogranite was the source of the ore-forming fluids. During the prograde skarn stage, the ore-forming fluids maintained an equilibrium closed system. Initially, the ore-forming fluid experienced reducing conditions, characterized by a low water-to-rock (W/R) ratio and a neutral to slightly alkaline pH. This fluid subsequently evolved into an oxidizing fluid with an elevated W/R ratio and an acidic pH. During the retrograde skarn stage, the fluid continued to exhibit high levels of oxygen fugacity. As the mineralization process progressed from the oxide stage to the quartz-cassiterite-sulfide stage, the presence of cassiterite indicates that the ore-forming fluid experienced two increases in oxygen fugacity, and this fluctuation may be attributed to the mixing of external fluids. The post-collisional extensional environment provided the tectonic background for the formation of the Jinshui tin deposit. Magmas derived from mantle sources ascended, and partial melting of the felsic crustal materials led to the formation of the Jinshui syenogranite after differentiation. Skarn-type tin deposits formed at the favorable locations of the contact between the granite body and the Sn-rich Jinshuikou Group.</div></div>","PeriodicalId":19644,"journal":{"name":"Ore Geology Reviews","volume":"179 ","pages":"Article 106541"},"PeriodicalIF":3.2,"publicationDate":"2025-03-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143600929","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Laser ablation inductively coupled plasma tandem mass spectrometry (LA-ICP-MS/MS) Rb-Sr sericite geochronology in orogenic gold deposits: Strategies and significance","authors":"Peng-Yue Yu ,&nbsp;Chao Li ,&nbsp;Jia-Nan Fu ,&nbsp;Jia-Yi Wang ,&nbsp;Ji-Hao Zhang ,&nbsp;Hao Zhang ,&nbsp;Hong-Yu Ren ,&nbsp;Hao-Cheng Yu ,&nbsp;Jian-Xiang Luo ,&nbsp;Zhi-Jun He ,&nbsp;Kun-Feng Qiu","doi":"10.1016/j.oregeorev.2025.106543","DOIUrl":"10.1016/j.oregeorev.2025.106543","url":null,"abstract":"<div><div>The challenge of determining the age of orogenic gold deposits has long been an issue due to the lack of suitable dating minerals. In recent years, the development of laser ablation inductively coupled plasma tandem mass spectrometry (LA-ICP-MS/MS) has made in-situ Rb-Sr dating of K-rich minerals possible. In gold deposits, K-rich minerals such as sericite are commonly present, providing excellent objects for in-situ Rb-Sr dating. However, since sericite can form during various geological processes, selecting the appropriate sericite to represent the age of gold mineralization is a challenging task. This study focuses on the Liba gold deposit in the West Qinling Orogen, hosted in metamorphosed sedimentary rocks, where sericite is widely developed. The sericite in the mining area is classified into three types based on petrographic and geochemical analysis. Type I hydrothermal sericite is large and euhedral, with the characteristic trace element composition of high B and low Ba, Sr, Sc, and V. Type II interfered sericite exhibits trace element contents that are always intermediate between the other two types. Type III metamorphic sericite is small and euhedral, characterized by low B and high Ba, Sr, Sc, and V. Based on differences in petrography and trace elements, Type I hydrothermal sericite can be identified as the end-member of ore-forming hydrothermal fluids. Type III regionally metamorphosed sericite represents the end-member of metamorphic hydrothermal fluids. Type II interfered sericite is a result of the mixing of these two end-member origins. The in-situ Rb-Sr age obtained from Type I hydrothermal sericite is 208.7 ± 4.3 Ma (n = 25, MSWD = 0.98), interpreted as the mineralization age. The age of Type III regionally metamorphosed sericite is 427 ± 44 Ma (n = 22, MSWD = 3.1), indicating the age of regional metamorphism in the strata. The age from Type II interfered sericite has a relatively large MSWD value, and its age ranges from 187 Ma to 485 Ma, indicating that Type II sericite is affected by a combination of hydrothermal and regional metamorphic processes. Type I hydrothermal sericite has a lower Sr isotope ratio of 0.7091 ± 0.0041, suggesting a crust source. Type III regionally metamorphosed sericite (0.7133 ± 0.0077) exhibit higher Sr isotope ratios, indicating stratigraphic source. From the perspective of Rb and Sr content and Rb/Sr ratio, samples with high Rb/Sr ratio (&gt;100) and low Sr content (&lt;20 ppm) are more suitable for dating. When the span of ⁸⁷Rb/⁸⁶Sr and ⁸⁷Sr/⁸⁶Sr reaches 10 times and 1.5 times respectively, the dating error can reach less than 3 %. The development and application of LA-ICP-MS/MS Rb-Sr dating technology have addressed the challenges of dating gold deposits, providing new avenues for future geochronological research. This technique holds significant potential for advancements in the field of earth sciences.</div></div>","PeriodicalId":19644,"journal":{"name":"Ore Geology Reviews","volume":"180 ","pages":"Article 106543"},"PeriodicalIF":3.2,"publicationDate":"2025-03-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143621509","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Combined cassiterite, scheelite, and apatite U–Pb dating of Sn-Cu(W) mineralization events in the Dayishan ore field, South China","authors":"Hua Jiang ,&nbsp;Biao Liu ,&nbsp;Hua Kong ,&nbsp;Xinyu Luo ,&nbsp;Qianhong Wu ,&nbsp;Shefa Chen ,&nbsp;Nengwen Cao","doi":"10.1016/j.oregeorev.2025.106515","DOIUrl":"10.1016/j.oregeorev.2025.106515","url":null,"abstract":"<div><div>The Dayishan ore field, a significant Sn-polymetallic production area in South China, hosts a variety of tin deposits, including the Lvzi’ao Cu (−Sn) deposit, Zhimashan Sn-Cu deposit, Baishaziling Sn deposit, and Maozaishan Sn (−W) deposit. However, the genetic relationships between the Sn-Cu-W deposits and the Dayishan granitic complexes remain unclear. Here, we present the U–Pb ages from zircon, cassiterite, apatite, and scheelite obtained from different granites and ore types within the Dayishan ore field. The Sn metallogenic age was determined through cassiterite U–Pb geochronology, yielding ages between 150 Ma and 153 Ma, while the Cu metallogenic age was identified through apatite U–Pb dating at 153.5 Ma. These ages are consistent with the zircon U–Pb age of Dayishan granitic complexes (152.37 Ma). In contrast, scheelite U–Pb geochronology provided an age of 133.58 Ma, characterizing the W metallogenic age. Geochemical variations in apatite from diverse deposits reveal systematic trends in F, Cl, and S contents and Cl/F ratios and ∑REE + Y concentration. The range of Y/Ho ratios in apatite suggests that the ore-forming material source of Sn and Cu deposits originated from a shared magmatic-hydrothermal fluids in Dayishan granitic complexes. Similarly, variations in cassiterite Zr/Hf and Nb/Ta ratios, along with a increasing oxygen fugacity, indicate a progressive decline in fluid temperature as the mineralization evolved. In contrast, the W deposit appear to a distinct magmatic-hydrothermal system associated with a deep concealed pluton formed during the Cretaceous. This suggests that the Sn-Cu mineralization in the Dayishan ore field was derived from a shared magmatic-hydrothermal system, which underwent significant during fluid evolution. Multidisciplinary evidence supports the existence of two stages of superimposed composite mineralization in Dayishan ore field, early Sn-Cu metallogenic stage was followed by a later W metallogenic stage, with the latter superimposed on the former, which together form multiple types of Sn-Cu(W) deposits in Dayishan granitic complexes.</div></div>","PeriodicalId":19644,"journal":{"name":"Ore Geology Reviews","volume":"179 ","pages":"Article 106515"},"PeriodicalIF":3.2,"publicationDate":"2025-03-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143593929","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}