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学者姓名：徐净
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Abstract ：
岩浆作用的不同时期、不同种属的碱性暗色矿物的矿物学信息能反演岩浆演化过程.本文对福建福州鼓山地区的晶洞花岗岩进行了主微量元素、锆石U-Pb同位素定年、Lu-Hf同位素分析,并对其特征暗色矿物进行了电子探针微区分析.鼓山花岗岩发育典型的钠铁闪石、霓石等碱性暗色矿物,地球化学特征表现为高硅、富碱、贫镁钙、低铁铝,属于准铝质到过碱质岩石;其LREE富集,HREE亏损,具有Eu负异常的特征,均显示K、Rb、Th、U等元素相对富集,Ba、Sr以及高场强元素Nb、Ta、P、Ti相对亏损,为典型的高分异的碱性A型花岗岩.LA-ICP-MS锆石U-Pb年龄在95Ma左右,指示其形成时代为晚白垩世早期.锆石的平均ΔFMQ=+5.36,表明岩浆具有较高的氧逸度,钠铁闪石和霓石等碱性暗色矿物形成于岩浆演化的晚期阶段.霓石显示出其高硅、高钠、高铁,低钛、镁、铝、锰的特征.钠铁闪石具有富碱、高铁、多硅、贫钙的特征.碱性花岗岩的锆石εHf(t)值范围为-1.8～+5.4,二阶段模式年龄tDM2为810～1278Ma,岩浆源区为同期底侵的富集地幔来源的陆壳岩石在高温下部分熔融形成,形成于太平洋板块俯冲后撤背景下的伸展环境.
Keyword ：
A型花岗岩 A型花岗岩 岩石成因 岩石成因 福州鼓山 福州鼓山 钠铁闪石 钠铁闪石 霓石 霓石
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| GB/T 7714 | 邓心禾 , 王力圆 , 徐净 et al. 福州鼓山地区A型花岗岩中碱性暗色矿物特征及其地质意义 [J]. | 岩石学报 , 2025 , 41 (1) : 112-134 . |
| MLA | 邓心禾 et al. "福州鼓山地区A型花岗岩中碱性暗色矿物特征及其地质意义" . | 岩石学报 41 . 1 (2025) : 112-134 . |
| APA | 邓心禾 , 王力圆 , 徐净 , 陈素余 . 福州鼓山地区A型花岗岩中碱性暗色矿物特征及其地质意义 . | 岩石学报 , 2025 , 41 (1) , 112-134 . |
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The magmatic evolution process can be reconstructed by using the mineralogical data from various alkaline mafic minerals from different stages of magmatism. This study presents an integrated bulk-rock elemental composition, zircon U-Pb dating, Lu-Hf isotopic geochemistry, and electron probe microregion analysis of key mafic minerals in miarolitic granites from Gushan area, coastal Fujian Province. The Gushan granite hosts typical alkaline mafic minerals, such as arfvedsonite and aegirine, characterized by high silicon content, alkali enrichment, low magnesium and calcium, and reduced iron and aluminum levels. These rocks are classified as para-aluminous to peralkaline and exhibit negative Eu anomalies, enrichment in light rare earth elements (LREE), and depletion in heavy rare earth elements (HREE). Granites are enriched in K, Rb, Th, U, while being depleted in Ba, Sr and high field strength elements Nb, Ta, P and Ti, identifying them as highly fractionated alkaline A-type granites. LA-ICP-MS zircon U-Pb dating yields an age of approximately 95 Ma, indicating their formation in early Late Cretaceous. The average Delta FMQ of zircon is +5.36, indicating that the magma possessed a high oxygen fugacity. Alkaline mafic minerals such as arfvedsonite and aegirine crystallized during the late stage of magmatic evolution. Aegirine characterized by high silicon, sodium and iron contents, along with low titanium, magnesium, aluminum and manganese. Arfvedsonite exhibits enrichment in alkali and iron, high silicon content, and depletion in calcium. The zircon epsilon(Hf) (t) values of the alkaline granite range from -1.8 to +5.4, with two-stage model ages (t(DM2)) spanning from 810 Ma to 1278 Ma. The magma source is attributed to partial melting of enrich mantle-derived continental crust rocks formed during contemporaneous underplating. This process occurred in an extensional environment driven by the subduction and rollback of the Pacific plate.
Keyword ：
Aegirine Aegirine Arfvedsonite Arfvedsonite A-type granites A-type granites Fuzhou Gushan Fuzhou Gushan Petrogenesis Petrogenesis
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| GB/T 7714 | Deng, Xinhe , Wang, Liyuan , Xu, Jing et al. Characteristics and geological significance of alkaline mafic minerals in A-type granite in Gushan area, Fuzhou [J]. | ACTA PETROLOGICA SINICA , 2025 , 41 (1) : 112-134 . |
| MLA | Deng, Xinhe et al. "Characteristics and geological significance of alkaline mafic minerals in A-type granite in Gushan area, Fuzhou" . | ACTA PETROLOGICA SINICA 41 . 1 (2025) : 112-134 . |
| APA | Deng, Xinhe , Wang, Liyuan , Xu, Jing , Chen, Suyu . Characteristics and geological significance of alkaline mafic minerals in A-type granite in Gushan area, Fuzhou . | ACTA PETROLOGICA SINICA , 2025 , 41 (1) , 112-134 . |
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The Jilongshan Au-Cu skarn deposit is located at the Jiurui ore district of the Middle-Lower Yangtze River metallogenic belt (MLYB), which is a significant metallogenic belt for dispersed elements. The Jilongshan deposit hosts abundant critical metal elements (e.g., Se, Te, and Bi) and shows potential for the comprehensive utilization of these critical mineral resources. This study examines the mineralogical textures and compositions of sulfides and sulfosalts from the Jilongshan deposit through EPMA, TIMA, and LA-ICP-MS analyses to clarify the nature of the occurrence and distribution of Se and Te. Based on the host rocks, the ores can be divided into porphyry-hosted, marble-hosted, and skarn-hosted types. Selenium content is significantly higher in porphyry- hosted and skarn-hosted ores compared to marble-hosted ore, while Te is most abundant in marble-hosted ore. Apart from rare minerals such as clausthalite (PbSe), hessite (Ag2Te), and hedleyite (Bi7Te3), Se and Te predominantly occur as isomorphism within pyrite (similar to 70 %) and tetrahedrite (similar to 20 %). On the basis of mineral assemblages and textures, tetrahedrite can be recognized as three generations, including Ttr1 (replacing Fe-Cu sulfides), Ttr2 (intergrown with Pb-Zn sulfides), and Ttr3 (replacement of last pyrite). Selenium is enriched in minerals precipitated in the Fe-Cu stage, including hydrothermal pyrite, chalcopyrite, and Ttr1, with the average of 345 ppm, 183 ppm, and 592 ppm, respectively, while Te mainly concentrates in minerals formed in the Pb-Zn stage, such as galena (143 ppm), Ttr2 (3112 ppm), and Ttr3 (489 ppm). These findings align with previous studies on the Se-Te relationship and may indicate that Se is more likely to be enriched at a higher temperature, while Te exhibits the opposite trend. The variation in sulfur fugacity within fluid systems may also play a role in the enrichment of these critical elements. Additionally, the regional distribution and enrichment of Se and Te in the porphyry-skarn deposits of the MLYB also shows certain regularity. Selenium is more likely to be enriched in high-temperature porphyry ores, while Te is most abundant in relatively low-temperature interlayer ores.
Keyword ：
Au-Cu skarn Au-Cu skarn Critical minerals Critical minerals Jilongshan Jilongshan Selenium Selenium Tellurium Tellurium
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| GB/T 7714 | Jiang, Jichen , Xu, Jing , Xie, Guiqing et al. Occurrence and distribution of Se and Te in the Jilongshan Au-Cu skarn deposit from the Middle-Lower Yangtze River metallogenic belt, China [J]. | ORE GEOLOGY REVIEWS , 2025 , 176 . |
| MLA | Jiang, Jichen et al. "Occurrence and distribution of Se and Te in the Jilongshan Au-Cu skarn deposit from the Middle-Lower Yangtze River metallogenic belt, China" . | ORE GEOLOGY REVIEWS 176 (2025) . |
| APA | Jiang, Jichen , Xu, Jing , Xie, Guiqing , Liu, Wenyuan , Cen, Zhihui , Chen, Suyu et al. Occurrence and distribution of Se and Te in the Jilongshan Au-Cu skarn deposit from the Middle-Lower Yangtze River metallogenic belt, China . | ORE GEOLOGY REVIEWS , 2025 , 176 . |
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云南文山州小洞锑矿床处于滇东南锑矿带,矿体赋存于寒武系中统田蓬组下段硅质岩中.前人认为其属于变质改造的热水沉积型锑矿床,但关于该矿床的成岩成矿机制和矿床成因类型等问题仍有争议.对赋矿围岩硅质岩的主微量分析显示,w(SiO2)为 84.70%～97.11%(均值 92.19%),w(Al2O3)为0.63%～6.08%(均值 3.56%),ΣREE为(20.43～77.54)×10-6,稀土配分曲线右倾,δEu值为0.66～1.57(均值 0.88),δCe值为 0.95～1.15(均值 1.07),形成于大陆边缘的非热水沉积环境,成分受陆源输入的控制.辉锑矿 LA-ICP-MS分析揭示了其微量元素的主要耦合替代机制为 2Sb3+↔As3++(Cu++Pb2+).辉锑矿的S同位素分析显示δ34S值变化范围较窄(0.42‰～4.91‰),暗示成矿物质来源于岩浆,成矿热液可能与老君山岩体活动相关,或者为深部隐伏岩体带来的热液.综合分析认为,小洞锑矿床的赋矿围岩与热水沉积无关,成矿物质主要来源于岩浆热液.岩浆活动后期的含矿热液流体沿断裂带运移,在层间虚脱带富集成矿,属于受断裂控制的热液型锑矿床.
Keyword ：
滇东南 滇东南 矿床成因 矿床成因 硅质岩 硅质岩 硫同位素 硫同位素 辉锑矿 辉锑矿
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| GB/T 7714 | 林心怡 , 林木森 , 吴久芳 et al. 滇东南文山州小洞锑矿床成因:来自硅质岩、辉锑矿元素及硫同位素的证据 [J]. | 成都理工大学学报（自然科学版） , 2025 , 52 (4) : 270-284 . |
| MLA | 林心怡 et al. "滇东南文山州小洞锑矿床成因:来自硅质岩、辉锑矿元素及硫同位素的证据" . | 成都理工大学学报（自然科学版） 52 . 4 (2025) : 270-284 . |
| APA | 林心怡 , 林木森 , 吴久芳 , 易友根 , 徐楷 , 徐净 . 滇东南文山州小洞锑矿床成因:来自硅质岩、辉锑矿元素及硫同位素的证据 . | 成都理工大学学报（自然科学版） , 2025 , 52 (4) , 270-284 . |
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Porphyry copper systems contain porphyry Cu, skarn, carbonate-replacement and epithermal deposits, and presently supply nearly all the Te and Se, and have the potential to produce Co as by-product in the future. However, few studies have investigated the distribution of Co, Te, and Se in the specific porphyry-skarn deposit. Detailed mineralogical and geochemical analyses were conducted to investigate the distribution of Co, Te, and Se across porphyry, skarn, and carbonate-replacement ore types in the Tonglvshan porphyry-skarn Cu-Fe-Au deposit, Eastern China. The early sulfide stage in three ore types is characterized by Co-bearing pyrite (Py1a, Co up to 1.3 wt%) + droplet-like tetradymite +/- hessite +/- cattierite. The texture transition from coarse-grained, porefree to porous Py1a in porphyry and skarn type ores suggests a shift from stable physico-chemical conditions to gentle fluid boiling, resulting in the precipitation of Co- and Te-bearing minerals. In contrast, fine-grained euhedral Py1a in carbonate-replacement type ores implies rapid cooling from high-temperature fluid interaction with marble. The late sulfide stage, which only occurs in skarn and carbonate-replacement type ores, is characterized by Corich pyrite (Py2) + carrollite + hessite + Bi-sulfosalts. In skarn type ores, tetradymite-kawazulite solid solution (TKSS) + hessite + native Te + naumannite reflects intense boiling, leading to an increase in fO2 and pH that precipitates Py2b (Co up to 19.2 wt%) and carrollite, while Te and Se may precipitate through vapor phase condensation. Conversely, the presence of fine-grained carrollite, zoned Py2a, sphalerite, and galena in carbonate-replacement type ore suggests that rapid cooling and increasing pH, resulting from fluid mixing, played a significant role in the precipitation Co and Te. Furthermore, the porous texture resulting from coupled dissolution-reprecipitation (CDR) during the late sulfide stage also provided favorable conditions for the formation of micro-nano sized critical metal particles.
Keyword ：
Cobalt Cobalt Critical metal Critical metal Porphyry-skarn deposit Porphyry-skarn deposit Selenium Selenium Tellurium Tellurium Tonglvshan Tonglvshan
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| GB/T 7714 | Wu, Xiaolin , Xie, Guiqing , Xu, Jing et al. Distribution of Co, Te, Se in porphyry copper systems: A case study of the Tonglvshan deposit, Eastern China [J]. | ORE GEOLOGY REVIEWS , 2024 , 174 . |
| MLA | Wu, Xiaolin et al. "Distribution of Co, Te, Se in porphyry copper systems: A case study of the Tonglvshan deposit, Eastern China" . | ORE GEOLOGY REVIEWS 174 (2024) . |
| APA | Wu, Xiaolin , Xie, Guiqing , Xu, Jing , Voudouris, Panagiotis , Liu, Wenyuan . Distribution of Co, Te, Se in porphyry copper systems: A case study of the Tonglvshan deposit, Eastern China . | ORE GEOLOGY REVIEWS , 2024 , 174 . |
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Fluvial detrital zircons provide crucial insights into crustal evolution in the early Precambrian. We used U-Pb geochronology and the Hf-O isotopic compositions of detrital zircons from the Tingjiang River to determine the provenance and continental crustal evolution of the NE Cathaysia Block. The zircon U-Pb ages show seven major populations at 177-105, 262-200 and 520-376 Ma, with striking peaks at c. 422, 775-606, 1457-836, 2042-1710 and 2661-2300 Ma, corresponding to documented tectono-thermal events in the South China Block. Episodic magmatism was the response to the formation and break-up of the Columbia and Rodinia supercontinents. The episode at 422 Ma matches with the ages of widespread early Paleozoic intraplate orogenic events in the South China Block. The isotopic signatures of Hf and O in the detrital zircons indicate that the majority of the Precambrian zircons likely originated from remelted ancient continental crust, with contributions from juvenile mantle-derived magmas. The Phanerozoic zircons, by contrast, were formed through the partial melting of recycled crustal material. Analysis of crustal growth rates, based on the two-stage Hf model ages, suggests a significant presence of juvenile crustal growth during the Paleoproterozoic era. Specifically, it is estimated that c. 40 and 90% of the present crust within the NE Cathaysia Block was formed at c. 2.3 and 1.6 Ga, respectively.
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| GB/T 7714 | Wang, Liyuan , Qiu, Chenhong , Zhang, Wenhui et al. Constraints on the growth and evolution of continental crust in the NE Cathaysia Block: insights from detrital zircon U-Pb ages and Hf-O isotopic analyses in Tingjiang sediments [J]. | JOURNAL OF THE GEOLOGICAL SOCIETY , 2024 , 181 (6) . |
| MLA | Wang, Liyuan et al. "Constraints on the growth and evolution of continental crust in the NE Cathaysia Block: insights from detrital zircon U-Pb ages and Hf-O isotopic analyses in Tingjiang sediments" . | JOURNAL OF THE GEOLOGICAL SOCIETY 181 . 6 (2024) . |
| APA | Wang, Liyuan , Qiu, Chenhong , Zhang, Wenhui , Xu, Jing , Zerizghi, Teklit . Constraints on the growth and evolution of continental crust in the NE Cathaysia Block: insights from detrital zircon U-Pb ages and Hf-O isotopic analyses in Tingjiang sediments . | JOURNAL OF THE GEOLOGICAL SOCIETY , 2024 , 181 (6) . |
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Most high-grade U ores are mined from quartz veins hosted in granites. The veins formed at shallow depths during episodic hydrothermal activity, however, the evolution of multiple stage fluids is not well constrained. In this study, we collected 56 quartz samples from the world-class, granite-related, Zhuguangshan U district (>17,000 t U from seven deposits) in southern China. Their textures and compositions were analyzed using scanning electron microscope cathodoluminescence (SEM-CL, n = 98) and laser ablation-induction coupled plasma-mass spectrometry (LA-ICP-MS, n = 643). Four types of quartz were identified, including magmatic quartz, early hydrothermal euhedral quartz, ore stage hydrothermal quartz (U-rich), and late hydrothermal quartz. New quartz textures and chemical compositions show that the transition of early hydrothermal quartz from the magmatic to hydrothermal stages is discontinuous, unlike the continuous trend observed in most magmatic-hydrothermal systems. Ore stage quartz is CL dark (with a peak at 650 nm), occurs as rims on early barren quartz, and has high contents of Mn, Al, and Sb. Altered textures of magmatic quartz developed through fluid-rock reactions at low temperatures, while rimmed textures of hydrothermal quartz formed during subsequent late-stage U-bearing fluid events, which played a crucial role in U mineralization. Quartz in the Zhuguangshan U district has distinct features compared to other magmatic-hydrothermal systems that can guide exploration for high-grade ore in this, and perhaps other, granite-related U systems.
Keyword ：
Fluid overprints Fluid overprints Granite-related Granite-related Quartz textures Quartz textures Trace elements Trace elements U mineralization U mineralization Zhuguangshan Zhuguangshan
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| GB/T 7714 | Gao, Shen , Wang, Yongjian , Zou, Xinyu et al. Fluid overprints and mineralization of the Zhuguangshan granite-related U district in China: Recorded by cathodoluminescence textures and chemistry of quartz [J]. | ORE GEOLOGY REVIEWS , 2024 , 173 . |
| MLA | Gao, Shen et al. "Fluid overprints and mineralization of the Zhuguangshan granite-related U district in China: Recorded by cathodoluminescence textures and chemistry of quartz" . | ORE GEOLOGY REVIEWS 173 (2024) . |
| APA | Gao, Shen , Wang, Yongjian , Zou, Xinyu , Vinis, Edward L. , Huang, Liangliang , Tao, Yi et al. Fluid overprints and mineralization of the Zhuguangshan granite-related U district in China: Recorded by cathodoluminescence textures and chemistry of quartz . | ORE GEOLOGY REVIEWS , 2024 , 173 . |
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In recent years, a substantial body of research has demonstrated the close relationship between the built environment and urban nighttime vitality. While scholars have established slightly varied evaluation systems for the built environment, most have utilized the open-source nighttime light (NTL) data (2012 similar to ) from the Visible Infrared Imaging Radiometer Suite (VIIRS) sensor on the Suomi National Polar-orbiting Partnership (NPP) Satellite to characterize nighttime vitality. However, with the release of the high spatial resolution NTL data from Glimmer Imager for Urbanization (GIU) sensor on the Sustainable Development Goals Satellite 1 (SDGSAT-1) by the Chinese Academy of Sciences (CAS), more options are now available for indicating nighttime vitality. Yet, no studies have so far measured the representational capability of this new NTL data. In this study, we selected Shanghai, one of the most urbanized cities in Asia, as our research area. We utilized both GIU NTL data and VIIRS NTL data to represent nighttime vitality and collected multidimensional geospatial big data as indicators of the built environment. Various regression models were employed to explore the differences in explanatory power when using different NTL data. To obtain more reliable conclusions, we have also divided the study area according to urban functional zone categories and conducted experiments on both the overall scale (entire study area) and local scale (different urban functional zones). The results showed that regression models using GIU NTL data had higher R-2 values both at overall scale(0.529 > 0.268) and local scale (0.704 > 0.641, 0.701 > 0.408, 0.537 > 0.512, 0.674 > 0.589), indicating stronger explanatory power of GIU NTL data. Furthermore, we found that the use of GIU NTL data revealed an amplification effect, where the impact of certain representative built environment factors (such as road density, building height, and vegetation coverage) on nighttime vitality was magnified, demonstrating more pronounced spatial heterogeneity. Our study investigated the performance of the new open-source SDGSAT1/GIU NTL data in representing nighttime vitality and shows its potential application in research on the relationship between the built environment and nighttime vitality. Additionally, our study also reveals the differences in the impact of the built environment on nighttime vitality across different urban functional zones. All these results will provide more valuable references for city managers aspiring to enhance the nighttime vitality and help them to make more rational planning plans.
Keyword ：
Built environment Built environment GWR GWR Nighttime light data Nighttime light data Nighttime vitality Nighttime vitality SDGSAT SDGSAT
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| GB/T 7714 | Xie, Qiyuan , Cai, Chenfan , Jiang, Yichen et al. Investigating the performance of SDGSAT-1/GIU and NPP/VIIRS nighttime light data in representing nighttime vitality and its relationship with the built environment: A comparative study in Shanghai, China [J]. | ECOLOGICAL INDICATORS , 2024 , 160 . |
| MLA | Xie, Qiyuan et al. "Investigating the performance of SDGSAT-1/GIU and NPP/VIIRS nighttime light data in representing nighttime vitality and its relationship with the built environment: A comparative study in Shanghai, China" . | ECOLOGICAL INDICATORS 160 (2024) . |
| APA | Xie, Qiyuan , Cai, Chenfan , Jiang, Yichen , Zhang, Hongyu , Wu, Zhijie , Xu, Jing . Investigating the performance of SDGSAT-1/GIU and NPP/VIIRS nighttime light data in representing nighttime vitality and its relationship with the built environment: A comparative study in Shanghai, China . | ECOLOGICAL INDICATORS , 2024 , 160 . |
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Iron, Cu, Pb-Zn, and W-Mo skarn deposits occur in the Gangdese metallogenic belt, Tibet. A lack of precise age constraints for mineralization hinders understanding of the processes contributing to skarn mineralization, particularly identification of the causative intrusions. In this study, new garnet U-Pb geochronological data are provided for the Qiagong (Fe) and Jiaduobule (Fe-Cu) skarns. We place particular emphasis on skarn garnet mineralogy, using scanning electron microscopy (SEM), electron probe microanalysis (EPMA), and laser ablation inductively coupled plasma mass spectrometry (LA-ICP-MS), to characterize garnet textures, compositions, and U-Pb isotope systematics. All garnets studied belong to the grossular-andradite series and display oscillatory compositional zoning (And 100 Gr 0 to And 20 Gr 80 ). Andradite-dominated garnet features a chondrite-normalized REE fractionation pattern exhibiting enrichment in LREE relative to HREE and a positive Eu anomaly, whereas grossular-dominated garnet displays relative LREE depletion and a marked flat HREE fractionation trend. Ore-forming elements, including Sn, W, As, and U, are detected at concentrations up to several hundreds of ppm in the same garnets. Concentrations of W and As are higher in andradite and correlate positively with one another. The correlation between U, Sn and the major oxide composition of garnet is insignificant, potentially resulting from the changing valence states of these elements under different redox conditions. Together with previously published and limited new data for the Gebunongba (Fe), Ri'a (Cu), and Hahaigang (W-Mo) skarns, the new garnet U-Pb age data indicate that the major Fe, Pb-Zn, and W-Mo mineralization event in the Gangdese metallogenic belt took place between 65 Ma and 50 Ma, with marked peaks at - 65 Ma and - 53 Ma. Partial melting of a crustal-dominated source due to the slab rollback (-65 Ma) and break off (-53 Ma) of Yarlug-Zangbo Tethyan Ocean and subsequent asthenosphere upwelling induced this regional event during the Paleogene to early Eocene. A less common but regionally widespread Cu (+/- Au) mineralization event in the same belt formed during the Late Cretaceous (-85 Ma) and may have resulted from the coupled influence of the northward subduction of the Yarlug-Zangbo Tethyan Ocean and the southward subduction of the Bangong-Nujiang Tethyan Ocean. This contribution highlights the potential significance of the Late Cretaceous Cu(+/- Au) event and hence the prospectivity of the belt for both skarn and porphyry systems. More broadly, our findings carry implications for Neo-Tethyan metallogeny in the region extending from southwestern China to eastern Europe during the Late Cretaceous. (c) 2024 International Association for Gondwana Research. Published by Elsevier B.V. All rights reserved.
Keyword ：
Gangdese belt Gangdese belt Garnet Garnet LA-ICP-MS LA-ICP-MS Skarn Skarn Tibet Tibet U-Pb geochronology U-Pb geochronology
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| GB/T 7714 | Xu, Jing , Li, Jiadai , Cook, Nigel J. et al. Redefining timing, genesis and geodynamic setting of polymetallic skarn mineralization, Gangdese belt, Tibet, from LA-ICP-MS garnet U-Pb geochronology [J]. | GONDWANA RESEARCH , 2024 , 132 : 113-135 . |
| MLA | Xu, Jing et al. "Redefining timing, genesis and geodynamic setting of polymetallic skarn mineralization, Gangdese belt, Tibet, from LA-ICP-MS garnet U-Pb geochronology" . | GONDWANA RESEARCH 132 (2024) : 113-135 . |
| APA | Xu, Jing , Li, Jiadai , Cook, Nigel J. , Ciobanu, Cristiana L. , Wu, Shitou , Wade, Benjamin P. et al. Redefining timing, genesis and geodynamic setting of polymetallic skarn mineralization, Gangdese belt, Tibet, from LA-ICP-MS garnet U-Pb geochronology . | GONDWANA RESEARCH , 2024 , 132 , 113-135 . |
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Mineral assemblages containing Cu-Bi sulfosalts, Bi chalcogenides, and Ag-(Au) tellurides have been identified in the mid-Miocene Zhibula Cu skarn deposit, Gangdese Belt, southern Tibet. Different mineral assemblages from three locations in the deposit, including proximal massive garnet skarn, proximal retrogressed pyroxene-dominant skarn in contact with marble, and distal banded garnet-pyroxene skarn hosted in marble, are studied to constrain the evolution of the mineralization. Hypogene bornite contains elevated Bi (mean 6.73 wt.%) and co-exists in proximal andradite skarn with a second bornite with far lower Bi content, carrollite, Au-Ag tellurides (hessite, petzite), and wittichenite. This assemblage indicates formation at relatively high temperatures (>400 degrees C) and high f(S2) and f(Te2) during prograde-stage mineralization. Assemblages of Bi sulfosalts (wittichenite, aikinite, kupc & iacute;kite, and paderaite) and bismuth chalcogenides (e.g., tetradymite) in proximal pyroxene skarn are also indicative of formation at relatively high temperatures, but at relatively lower f(Te2) and f(S2) conditions. Within the reduced distal skarn (chalcopyrite-pyrrhotite-bearing) in marble, cobalt, and nickel occur as discrete minerals: cobaltite, melonite and cobaltic pentlandite. The trace ore mineral signature of the Zhibula skarn and the distributions of precious and critical trace elements such as Ag, Au, Co, Te, Se, and Bi support an evolving magmatic-hydrothermal system in which different parts of the deposit each define ore formation at distinct local physicochemical conditions. This is the first report of kupc & iacute;kite and paderaite from a Chinese location. Their compositions are comparable to other occurrences, but conspicuously, they do not form nanoscale intergrowths with one another.
Keyword ：
Au-Ag tellurides Au-Ag tellurides Bi chalcogenides Bi chalcogenides Cu-Bi sulfosalts Cu-Bi sulfosalts ore mineralogy ore mineralogy Tibet Tibet Zhibula Cu skarn Zhibula Cu skarn
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| GB/T 7714 | Xu, Jing , Ciobanu, Cristiana Liana , Cook, Nigel John et al. Constraints on Ore Genesis from Trace Ore Mineralogy: A New Occurrence of Kupcikite and Paděraite from the Zhibula Cu Skarn Deposit, Southern Tibet [J]. | MINERALS , 2024 , 14 (5) . |
| MLA | Xu, Jing et al. "Constraints on Ore Genesis from Trace Ore Mineralogy: A New Occurrence of Kupcikite and Paděraite from the Zhibula Cu Skarn Deposit, Southern Tibet" . | MINERALS 14 . 5 (2024) . |
| APA | Xu, Jing , Ciobanu, Cristiana Liana , Cook, Nigel John , Gao, Shen , Zhao, Taiping , Jiang, Jichen . Constraints on Ore Genesis from Trace Ore Mineralogy: A New Occurrence of Kupcikite and Paděraite from the Zhibula Cu Skarn Deposit, Southern Tibet . | MINERALS , 2024 , 14 (5) . |
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