Ore Geology Reviews最新文献

{"title":"Geophysical investigation of the Xiarihamu Cu-Ni-Co deposit and its surrounding areas in East Kunlun, Qinghai Province","authors":"Xingchun Wang ,&nbsp;Jie Zhang ,&nbsp;Yi Yang ,&nbsp;Hua Li ,&nbsp;Shukuan Wu ,&nbsp;Zhi An Wang ,&nbsp;Qingquan Zhi ,&nbsp;Jinhong Wang ,&nbsp;Junjie Wu ,&nbsp;Lei Li ,&nbsp;Xiaohong Deng","doi":"10.1016/j.oregeorev.2024.106377","DOIUrl":"10.1016/j.oregeorev.2024.106377","url":null,"abstract":"<div><div>Physical properties and geophysical measurements were conducted on the Xiarihamu copper-nickel mining and its surrounding areas in the East Kunlun region of Qinghai Province. This work summarizes the physical characteristics of the mineralized strata in the mining area and delineates the exploration prospects within and around the mining area. These findings provide a foundation and direction for future prospecting efforts. By conducting targeted experiments on the known profiles within the mining area using the transient electromagnetic (TEM) method, as well as conducting TEM profile measurements in the covered regions, our geological understanding of the ore-bearing rock mass has been enhanced. Consequently, prospective areas for deep mineral exploration within the mining area were identified, establishing a solid basis for future deep exploration efforts.</div><div>In the periphery of the mining area, prospecting was based on anomaly verification from high-precision magnetic surveys, supplemented by the interpretation of ground and borehole transient electromagnetic (BTEM) surveys. It was inferred that the electrical and magnetic anomalies in the periphery originate from a common source. The prospecting results indicate that the high-precision magnetic anomalies in the peripheral areas are related to the orientation of the anomaly center and the characteristics of the electrical and magnetic anomalies. The northern extension of the existing magnetic anomaly has been identified as the primary direction for future prospecting efforts.</div></div>","PeriodicalId":19644,"journal":{"name":"Ore Geology Reviews","volume":"175 ","pages":"Article 106377"},"PeriodicalIF":3.2,"publicationDate":"2024-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143102954","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":"Genesis and evolution of the Dajing tin-copper polymetallic deposit in Inner Mongolia: Constraints from geochronology, mineral composition, and S-Pb-H-O isotopes","authors":"Hongyu Liu ,&nbsp;Wei Mei ,&nbsp;Xinbiao Lv ,&nbsp;Xiaofeng Cao ,&nbsp;Banxiao Ruan ,&nbsp;Qihang Yu","doi":"10.1016/j.oregeorev.2024.106373","DOIUrl":"10.1016/j.oregeorev.2024.106373","url":null,"abstract":"<div><div>Most tin mineralization shows a strong spatial and temporal association with Cu-Pb-Zn polymetallic mineralization. Tin mineralization typically occurs as porphyry, skarn, or quartz veins at depth, whereas the base metal ore bodies are found in shallower part and controlled by fault. However, not all Cu-Pb-Zn deposits exhibit significant tin mineralization, and the evolution of tin in base metal deposits remains unclear. The Dajing tin polymetallic deposit (Sn 0.08Mt., Cu 0.33Mt., Pb + Zn 2Mt), provides an ideal opportunity to address this question. Three primary stages of mineralization containing three generations of cassiterite and two generations of chalcopyrite have been identified in the Dajing deposit: (1) Sn-As mineralization stage (Cst1a and Cst1b); (2) Cu-Zn mineralization stage (Cst2 and Ccp1); and (3) Pb-Zn-Ag mineralization stage (Ccp2). The U-Pb dating of two cassiterite samples from quartz-cassiterite and cassiterite-sulfide ore bodies yielded Tera-Wasserburg lower intercept ages of 161.3 ± 5.5 Ma and 162.8 ± 4.9 Ma, respectively, indicating that the Dajing deposit formed during the Middle to Late Jurassic. The chemical composition of cassiterite indicates that it was formed in a physicochemical environment with a relatively low temperature (∼ 350 °C) and low oxygen fugacity (Log fO₂≈-35) compared with the proximate metallogenic system, such as granite-type and skarn-type deposits. We propose that tin-arsenic co-precipitation and sustained temperature cooling are effective mechanisms leading to the large-scale formation of cassiterite. The signal curves of laser ablation and the correlation of trace elements in Sn-enriched chalcopyrite indicate that Sn occupies the mineral lattice positions of Cu or Fe through the isomorphism mechanism in Ccp1 of the Cu-Zn stage, while occurring as the form of nanoscale stannite inclusions in Ccp2 of the Pb-Zn-Ag stage. The S-Pb-H-O isotopic compositions indicate that metals such as tin, copper, lead, and zinc may be sourced from magmatic-hydrothermal fluids associated with the Jurassic magmatism. A new model has been developed to highlight the various forms of tin accumulation and evolution at different mineralization stages. In combination with the geological characteristics, the above results suggest that the Dajing deposit is a magma-related cassiterite-sulfide hydrothermal vein-type deposit, and indicate the prospect of further exploration for tin mineralization near and/or under the Dajing mining area.</div></div>","PeriodicalId":19644,"journal":{"name":"Ore Geology Reviews","volume":"175 ","pages":"Article 106373"},"PeriodicalIF":3.2,"publicationDate":"2024-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143103132","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":"Ore-forming process of the Saibagou gold deposit in the Northern Qaidam Orogen: Evidence from fluid inclusions, D-O isotopes and pyrite geochemistry","authors":"Mingying Tang ,&nbsp;Zhengjiang Ding ,&nbsp;Xuanxuan Li ,&nbsp;Wei Zhu ,&nbsp;Honglei Zhan ,&nbsp;Qibin Zhang ,&nbsp;Xin Wang ,&nbsp;Lei Hua ,&nbsp;Lisha Sun","doi":"10.1016/j.oregeorev.2024.106368","DOIUrl":"10.1016/j.oregeorev.2024.106368","url":null,"abstract":"<div><div>The northern Qaidam Orogen that hosts over 100 gold deposits is an important gold mineralization belt in Qinghai Province (western China). However, ore-forming processes and genesis of these gold deposits remain controversial. We analyzed the fluid inclusions (FIs), D-O isotopes and pyrite trace element compositions of the Saibagou gold deposit in the Tommorrit-Saibagou area and discussed the genesis of this deposit. These results show that the Saibagou gold ores contain three types of FIs: aqueous, aqueous-CO₂, and pure CO₂ type. The ore-forming fluids in each stage changed from an early medium temperature and low-salinity H₂O-NaCl ± CO₂ system to a late low-temperature and low-salinity H₂O-NaCl system. The D-O isotopes show that the ore-forming fluids are the mixed fluids of metamorphic water and meteoric water. In the main-ore stage, the ore fluids are mainly metamorphic and minor magmatic water sourced, with increasing meteoric water incursion toward the late-ore stage. The Au and other ore-forming elements (such as Ag, Cu, Pb, Zn, Te) are positively correlated and are mainly enriched in pyrite in the stage II. We suggest that the Saibagou is an orogenic gold deposit and is closely related to the Late Silurian northward subduction and hyperplastic orogenesis in Qaidam Block.</div></div>","PeriodicalId":19644,"journal":{"name":"Ore Geology Reviews","volume":"175 ","pages":"Article 106368"},"PeriodicalIF":3.2,"publicationDate":"2024-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142747845","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":"Shortwave infrared (SWIR) spectroscopy for greenfield exploration: Investigating the Bayi-Muchang prospect within the Jiama giant Porphyry-Skarn system","authors":"Junfeng Zhao ,&nbsp;Yabo Zhu ,&nbsp;Wanjian Lu ,&nbsp;Bing Xiao ,&nbsp;Zhengkun Yang ,&nbsp;Liang Du","doi":"10.1016/j.oregeorev.2024.106369","DOIUrl":"10.1016/j.oregeorev.2024.106369","url":null,"abstract":"<div><div>Jiama is a giant porphyry-skarn system (1,814 Mt ore @ 0.40 % Cu) within the Gangdese porphyry copper belt, Southern Tibet. Recently, copper, molybdenum, and tungsten anomalies, similar to those at Jiama, have been identified in the Bayi-Muchang prospect southwest of the deposit. However, the mineralization potential of this peripheral area and its genetic connection to Jiama remain poorly constrained. This study employs shortwave infrared (SWIR) spectroscopy to map alteration minerals in both the Bayi-Muchang prospect and compare them to those in the southwestern Jiama deposit. SWIR spectral results reveal that the Bayi-Muchang prospect is dominated by chlorite, phengite, quartz, and less carbonates from chlorite-sericite alteration with minor epidote and chlorite vein-halos, as well as pervasive propylitic assemblages with chlorite, epidote, and less carbonates, indicating the presence of an independent hydrothermal center where ore-forming fluids were concentrated and exsolved rather than an extension of the Jiama deposit. Key spectral indicators for mineralized zones, derived from Jiama samples, including wavelength of 2200 nm feature longer than 2207 nm and the illite spectral maturity higher than 1.4 in white mica, as well as the full width at half maximum (FWHM) of 2335 nm feature longer than 36 nm in carbonate minerals. Additionally, carbonate minerals in the Duodigou Formation north of Bayi-Muchang record a contact metamorphism gradient, with the FWHM of the 2335 nm feature increasing from 36 to 56 nm from south to north. The northwest Bayi-Muchang area, near the hydrothermal center, is identified as a favorable target for skarn-type and porphyry-type mineralization. This study highlights the effectiveness of SWIR spectroscopy mapping in supporting exploration strategies within porphyry-skarn systems, particularly for greenfield targets.</div></div>","PeriodicalId":19644,"journal":{"name":"Ore Geology Reviews","volume":"175 ","pages":"Article 106369"},"PeriodicalIF":3.2,"publicationDate":"2024-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142747849","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":"Short wavelength infrared (SWIR) spectral and geochemical characteristics of white micas in the Xiaonangou gold deposit, East Qinling: As a hyperspectral tool in exploration","authors":"Mengqi Wang ,&nbsp;Jingwen Mao ,&nbsp;Zuoman Wang ,&nbsp;Guolong Yan ,&nbsp;Shufei Liu ,&nbsp;Haoyuan Jiang ,&nbsp;Yongfei Tian ,&nbsp;Peng Wang ,&nbsp;Gang Chen ,&nbsp;Guang Miao ,&nbsp;Huishou Ye","doi":"10.1016/j.oregeorev.2024.106349","DOIUrl":"10.1016/j.oregeorev.2024.106349","url":null,"abstract":"&lt;div&gt;&lt;div&gt;The Xiaoqinling-Xiong’ershan region, a prominent component of the East Qinling Belt, is renowned worldwide for its molybdenum and gold ore fields. Moreover, with gold reserves of at least 1300 tons, it is also China’s major gold mining province, second only to Jiaodong. Seated in eastern center of the Xiong’ershan area, the Xiaonangou gold deposit has an estimated gold reserve of over 60 tons and is characterized by disseminated gold in altered rocks. Based on detailed petrographic investigation, coupled with an analysis of crosscutting relationships, there are three stages of hydrothermal alteration and mineralization: pre-ore K-feldspar + quartz (stage Ⅰ), ore quartz + ankerite + disseminated pyrite + polymetallic sulfide (stage Ⅱ), and post-ore quartz + carbonate (stage Ⅲ). As revealed by a systematic analysis of short wavelength infrared (SWIR) spectroscopy, four main types of alteration minerals exist, including white micas, clay minerals, chlorite, and carbonate minerals. In the ore body, white micas mainly developed in stage Ⅱ, and slightly occurred in stage Ⅰ. The clay minerals and chlorite usually developed in the banded alteration zones outside the orebody. Most of the carbonate minerals, including calcite and dolomite, mainly developed in stage Ⅲ, but the ankerite was associated with disseminated pyrite, quartz and polymetallic sulfides in stage Ⅱ. Of these, white micas were recognized as the most abundant hydrothermal alteration minerals, which were observed to be widely distributed within alteration zones in the Xiaonangou gold deposit. The SWIR parameters and its spatial variation of white mica indicate that the Al-OH absorption positions (Pos2200) exhibit a drifting tendency towards longer (&gt;2205 nm) wavelengths in the ore body vicinity. Additionally, there is a discernible increase in illite crystallinity (IC values) in the same region. The temperature, redox, and pH conditions for associated fluids can be reflected through characterization of these parameters. Furthermore, it demonstrates that the ore-proximal zones are situated in a relatively oxidized, alkaline, and high-temperature environment in the Xiaonangou gold deposit. According to the electron probe microanalysis (EPMA) results, two distinct end members exist in white mica: a Si-poor, Al-rich muscovite and an Al-poor, Si-, Fe-, and Mg-rich phengite. The Si, &lt;sup&gt;iv&lt;/sup&gt;Al, &lt;sup&gt;vi&lt;/sup&gt;Al, Mg, Fe, and Ti elements exhibit a linear correlation with the wavelength of Pos2200, demonstrating that the shift in wavelength of white mica is predominantly controlled by Tschermak substitution (&lt;sup&gt;iv&lt;/sup&gt;Si&lt;sup&gt;vi&lt;/sup&gt;(Mg，Fe) ↔&lt;sup&gt;iv&lt;/sup&gt;Al&lt;sup&gt;vi&lt;/sup&gt;Al). The application of spatial variation in the SWIR spectral parameters along with geochemical properties of white mica facilitates the effective guidance of mineral exploration. In comparison to other deposits, it can be concluded that the longer (&gt;2205 nm) wavelength of the Pos2200 along with the higher IC ","PeriodicalId":19644,"journal":{"name":"Ore Geology Reviews","volume":"175 ","pages":"Article 106349"},"PeriodicalIF":3.2,"publicationDate":"2024-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142747853","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":"Lithium pegmatite formation in Kelumute-Jideke pegmatite field, Chinese Altai: Insight from geochronology, petrology and lithium isotope geochemistry","authors":"Hao Sha ,&nbsp;Siyu Liu ,&nbsp;Yifei Xu ,&nbsp;Rui Wang ,&nbsp;Bo Chen ,&nbsp;Zhongli Zhang ,&nbsp;Yanliang Zhang ,&nbsp;Haiwei Sun","doi":"10.1016/j.oregeorev.2024.106381","DOIUrl":"10.1016/j.oregeorev.2024.106381","url":null,"abstract":"<div><div>The Kelumute-Jideke pegmatite field is an important lithium (Li)-rich pegmatite mineralization area within the Chinese Altai orogenic belt. There have been four large-sized venis (Kalu’an No.803, No. 805, No.806, No.807), one medium-sized vein (Kelumute No.112), nine small-sized deposits (such as Jiamukai, Qunkuer, Azubai), with a total of 130,000 tons Li₂O found in this area. However, it remains enigmatic whether Li-rich pegmatite formed through fractional crystallization of coeval granite or direct anatexis of metasedimentary rocks. Here, we selected pegmatites and their host rocks, including metasedimentary rocks and a granitic batholith, from this pegmatite field to conduct geochronology, whole major and trace element, and Li isotope analyses. The granite intrusions in this field exhibits multiple-stage emplacement ages, including 447.7 ± 4.2 Ma, 405.8 ± 0.0 – 397.4 ± 4.1 Ma, 358.4 ± 3.1–308.4 ± 4.6 Ma, 239.5 ± 1.6 – 213.7 ± 1.5 Ma. The youngest magmatism is coeval with the formation age of rare metal pegmatites. Geochemistry analyses of granites show a peraluminous S-type granite signature with high SiO₂ (71.21–75.01 wt.%) contents and A/CNK (&gt; 1) ratios. The metasedimentary rocks of Kulumuti Group in this field have experienced weak weathering and exhibit extremely high Li content (maximum of 1193 ppm), which is much higher than that of the Traissic granite (96.1 ppm). The average composition of metasedimentary rocks is used to calculate the partition coefficient of different mineral proportions during the modelled equilibrium melting of the metamorphic phase. This approach determines the mineral proportions and partition coefficients under various conditions. Subsequently, Rayleigh dehydration melting simulations were performed on the Li-rich and Li-poor metasedimentary rocks. The Rayleigh dehydration melting simulations show that melts produced from partial melting of Kulumuti Group display Li content of 41–4017 ppm and δ⁷Li values of −0.4-+8.3‰, consistent with natural pegmatites. The low-degree partial melting of claystone-rich metasedimentary rocks (Li-rich) in the Kulumuti Group can produce a preliminary Li-rich melt. However, through Rayleigh fractional crystallization simulation of coeval granite, it is found that the calculated δ⁷Li value (+6‰) of pegmatites is much higher than that of natural Li-rich pegmatite (average + 3.0 ‰). Therefore, the formation of Li-rich pegmatites in the Kelumute-Jideke pegmatite field is predominantly attributed to the partial melting of Li-rich protoliths with low δ⁷Li values, rather than high differentiation of Halong granite. The study highlights the importance of the anatexis of metasedimentary rocks in the formation of Li-rich pegmatites, which is key to mineral exploration for Li pegmatites in the Altai orogenic belt.</div></div>","PeriodicalId":19644,"journal":{"name":"Ore Geology Reviews","volume":"175 ","pages":"Article 106381"},"PeriodicalIF":3.2,"publicationDate":"2024-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143103536","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":"Hydrothermal fluid pathways and mineralization potential in the High Atlas Massif (Morocco) using fuzzy logic and multifractal modeling","authors":"Bouchra Dadi ,&nbsp;Mohammed Ouchchen ,&nbsp;Farid Faik ,&nbsp;Said Boutaleb ,&nbsp;Driss El Azzab ,&nbsp;Younes Mamouch ,&nbsp;Lahsen Achkouch ,&nbsp;Abdelhamid Bajadi ,&nbsp;El Hassan Abia ,&nbsp;Behnam Sadeghi","doi":"10.1016/j.oregeorev.2024.106401","DOIUrl":"10.1016/j.oregeorev.2024.106401","url":null,"abstract":"<div><div>This study aims to develop a mineral favorability map by combining various data on hydrothermal and structural alterations using an Exploration Information System (EIS). It focuses on the Tizi n’Test region, located in the western part of the Moroccan High Atlas. The data comes from the processing of ASTER satellite images, with the application of mathematical algorithms such as the Relative Absorption Band Depth (RBD) method and Crosta’s Principal Component Analysis (CPCA), which allowed for the mapping of the spatial distribution of alteration minerals. This approach helped delineate zones of argillic, phyllic, and propylitic alterations, as well as areas containing iron oxides. Radiometric data was also used to identify potassic alterations by calculating K/eTh, K/eU ratios, and the F parameter. Structural data, including magnetic lineaments and geological faults primarily oriented in a NNE-SSW, NE-SW and E-W direction, were interpreted as preferred pathways for the circulation of hydrothermal fluids, leading to structural and lithological traps. All data was integrated into a GIS using fuzzy logic. The resulting mineral favorability map was classified using the concentration-area (C-A) multifractal method to differentiate the area’s most conducive to mineralization from background noise. The final map identifies five high-potential zones, with the first three situated near the Tichka granite. The fourth and fifth zones are found along the Tizi n’Test and Ouchden faults, as well as at the interface between the Ediacaran basement of the Ouzellarh block and its Paleozoic cover. This study highlights the significant role of magmatic and tectonic processes in the development of metalliferous deposits in this area.</div></div>","PeriodicalId":19644,"journal":{"name":"Ore Geology Reviews","volume":"175 ","pages":"Article 106401"},"PeriodicalIF":3.2,"publicationDate":"2024-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143102960","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":"Multi-geochronological methods unveiling a Jurassic metamorphic event in Jiaodong Peninsula and its implication for regional mineralization in the NW Pacific","authors":"Zhonghua Tian ,&nbsp;Doug MacKenzie ,&nbsp;Fulai Liu ,&nbsp;Pinghua Liu ,&nbsp;Qibin Zhang ,&nbsp;Wenjiao Xiao","doi":"10.1016/j.oregeorev.2024.106385","DOIUrl":"10.1016/j.oregeorev.2024.106385","url":null,"abstract":"<div><div>The subduction of the Paleo-Pacific Plate during the Jurassic period set in motion a complex interplay of geological processes, collectively recognized as the Yanshan Movement. While previous studies have focused primarily on magmatism and deformation, the role of metamorphic events and their influence on gold mineralization has been largely overlooked. This paper addresses this gap by using monazite, titanite, and zircon dating to uncover Jurassic metamorphic details from rocks of the Jingshan Group which hosts numerous quartz vein-type gold deposits within and along a series of major, kilometre-scale NNE-SSW vertical faults. Through precise age dating, we identified two distinct phases of Jurassic metamorphism: the Early-Middle Jurassic (198–170 Ma) and the Late Jurassic (156–142 Ma). A mapped 156 Ma thrust fault, characterized by a <em>syn</em>-tectonic vein, corresponds with the second phase of metamorphism, and underscores the interconnected nature of deformation and metamorphism during the Yanshan Movement. In addition, widespread Jurassic magmatism, associated with gold deposits, points to partial melting of the thickened North China Craton crust, driven by the subduction of the Paleo-Pacific plate. These findings suggest that Jurassic metamorphism, in combination with concurrent deformation and magmatism, potentially played a key role in the formation of the Jiaodong gold deposits. Subduction-induced crustal thickening facilitated contemporaneous deformation, magmatism, and metamorphism, which in turn promoted the generation of metamorphic fluids and provided pathways for gold-bearing fluids, contributing to the region’s rich gold mineralization.</div></div>","PeriodicalId":19644,"journal":{"name":"Ore Geology Reviews","volume":"175 ","pages":"Article 106385"},"PeriodicalIF":3.2,"publicationDate":"2024-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143103538","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":"Corrigendum to “In situ U–Pb dating of dolomite: Reliable ages for sandstone-hosted uranium deposits in the southern Songliao Basin, NE China” [Ore Geol. Rev. 174 (2024) 106331]","authors":"Dongguang Yang ,&nbsp;Fengjun Nie ,&nbsp;Fei Xia ,&nbsp;Liangliang Zhang ,&nbsp;Yanwen Tang ,&nbsp;Zhaobin Yan ,&nbsp;Zhenfeng Yang ,&nbsp;Fumei Wang","doi":"10.1016/j.oregeorev.2024.106380","DOIUrl":"10.1016/j.oregeorev.2024.106380","url":null,"abstract":"","PeriodicalId":19644,"journal":{"name":"Ore Geology Reviews","volume":"175 ","pages":"Article 106380"},"PeriodicalIF":3.2,"publicationDate":"2024-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143103540","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":"Magmatic-hydrothermal evolution of Sn-W granites in the Kibara belt, Democratic Republic of Congo: 40Ar-39Ar dating and LA-ICP-MS microanalysis of cassiterites and cassiterite-hosted fluid inclusions","authors":"Douxdoux Kumakele Makutu ,&nbsp;Jung Hun Seo ,&nbsp;Bum Han Lee ,&nbsp;Tong Ha Lee ,&nbsp;Adalbert-Jules Ma Ngwayaya Makutu ,&nbsp;Thomas Mayena Kanika ,&nbsp;Albert Tienge Ongendangenda ,&nbsp;Frederic Muanza Makoka ,&nbsp;Marcel Guillong","doi":"10.1016/j.oregeorev.2024.106400","DOIUrl":"10.1016/j.oregeorev.2024.106400","url":null,"abstract":"<div><div>The northwestern part of the Kibara Belt (KIB) in the Democratic Republic of Congo (DRC) consists of highly altered (greisenized) Sn-bearing granites “the G-4 granite” and associated mineralized Sn-W quartz veins. To understand the magmatic-hydrothermal processes, including the sources of metals, intrusion-vein relationships, and metal precipitation, we investigated Ar-Ar ages of mica minerals and the geochemistry of cassiterites and fluid inclusions using in-situ LA-ICP-MS microanalysis. The Sn-W province in the KIB has been determined to be Early Neoproterozoic, with the Sn-bearing granites (phlogopite Ar-Ar: 974 ± 1 Ma) being slightly younger than the Sn-W quartz veins (muscovite Ar-Ar: 990 ± 1 Ma).</div><div>Primary and pseudo-secondary fluid inclusion assemblages (FIAs) in cassiterites from the Sn-bearing granites and the Sn-W quartz veins show an elevated incompatible element ratio, including Li/Na, Cs/Na, and Rb/Sr, suggesting fractional crystallization in the causative magma. These ratios are relatively higher in the FIAs from the Sn-bearing granites compared to the Sn-W quartz veins, indicating more “fractionated granite-derived” and postdating magmatic-hydrothermal fluids in the Sn-bearing granites. Tantalum-rich (Ta/Nb &gt; 1) cassiterites in the Sn-bearing granites and relatively Nb-rich (Ta/Nb &lt; 1) cassiterites in the Sn-W quartz veins further support the presence of more fractionated magmatic fluids in the Sn-granites compared to the Sn-W quartz veins.</div><div>A positive correlation trend of homogenization temperatures versus salinities, with relatively consistent Cl/Br ratios in all the studied FIAs, suggests a mixing of fluids derived from magmatic and possibly meteoric sources. Fluctuations and positive correlations of redox-sensitive trace element ratios (e.g., Fe/Mn and V/Ti ratios) in the cassiterite further indicate the mixing of fluids with contrasting redox potentials. This mixing could enhance the oxidation of the magmatic-hydrothermal fluids and promote a cassiterite precipitation in the KIB.</div></div>","PeriodicalId":19644,"journal":{"name":"Ore Geology Reviews","volume":"175 ","pages":"Article 106400"},"PeriodicalIF":3.2,"publicationDate":"2024-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143102421","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}