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Mineralogical and Geochemical Characteristics of Emeralds from the Bahutiya and Gurabanda Deposits of Jharkhand,India,and Comparison with Other World Emerald Occurrences: 《Acta Geologica Sinica(English Edition)》2025年第2期553-567,共15页Jyoti Sankar SATAPATHY Sahendra SINGH Prabodha Ranjan SAHOO; Emerald mineralization from the Bahutiya and Gurabanda areas of Jharkhand in the eastern part of India is a recent discovery.In this deposit,emerald mineralization occurs along the contact zone between pegmatite and e...; 关键词：Type IA emerald METASOMATISM chromium INDIA

Selective metasomatism of ultramafic cumulates within Archean supracrustal sequences: 《Geoscience Frontiers》2024年第5期283-299,共17页Lingyu Zhang Sampriti Basak David Zakharov Kristoffer Szilas; funding from VILLUM FONDEN Grant VKR18978 to Kristoffer Szilas;China Scholarship Council(No.202006170037)to Lingyu Zhang.; The Neoarchean StorøSupracrustal Belt in SW Greenland comprises a sequence of mature quartzite,metapelite,amphibolite,and ultramafic rocks that underwent amphibolite facies metamorphism during the amalgamation of the ...; 关键词：ARCHEAN Ultramafic rocks TOURMALINE METASOMATISM Storø GREENLAND

Hydro-uvarovite from Mantle Peridotites of Naga Hills Ophiolite: A Mineral Tracer for Neo-Tethyan Mantle Wedge Metasomatism: 《Acta Geologica Sinica(English Edition)》2024年第4期867-877,共11页Anisha VERENCAR Abhishek SAHA Nilanjana SORCAR Sohini GANGULY Pankaj KUMAR Atul Kumar SINGH; the funding received from the Science and Engineering Research Board (SERB), Govt. of India under GAP 3291;funded by Ministry of Earth Science (MoES) with project reference number Mo ES/ P.O. (Seismic) 8 (09)-Geochron/2012。; Hydrous Cr-bearing uvarovite garnets are rare in natural occurrences and belong to the ugrandite series and exist in binary solid solutions with grossular and andradite garnets. Here, we report the occurrence of hydro...; 关键词：UVAROVITE HYDROXYL metasomatic alteration low-Cr diopsides SERPENTINIZATION mantle peridotite

A geochemical perspective on the genesis of Cenozoic basic volcanism in northeastern Turkey:an overview of metasomatism and heterogeneity of the sub-continental lithospheric mantle in a post-collisional setting: 《Acta Geochimica》2024年第3期489-506,共18页Mehmet Arslan Irfan Temizel; The post-collisional Cenozoic basic volcanic rocks in NE Turkey show temporal variations in whole-rock lithophile element and highly siderophile element(HSE)systematics that are mainly associated with the nature of su...; 关键词：BASALT Lithospheric mantle METASOMATISM Mantle heterogeneity Cenozoic volcanics NE Turkey

Reverse metasomatism of subduction zone fluids被引量：1: 《Science China Earth Sciences》2024年第2期634-638,共5页Yixiang CHEN; funded by the National Natural Science Foundation of China(Grant Nos.42073029,42273043);the Fundamental Research Funds for the Central Universities。; 1.Fluid metasomatism in subduction zones Subduction zones are the key tectonic setting that links Earth's surficial sphere to deep sphere(Zheng and Chen,2016).Fluid action occurring in subduction zones is closely rela...; 关键词：SUBDUCTION METASOMATISM EARTH

Fluid effect on zircon O and U-Pb isotopes during ultrahigh-pressure metamorphism:Insights from the Dora-Maira Massif of the Western Alps: 《Geoscience Frontiers》2023年第6期210-223,共14页Kun Zhou Yi-Xiang Chen Jia-Wei Xiong Hans-Peter Schertl Xiao-Ping Xia; This study was funded by the Strategic Priority Research Program(B)of CAS(Grant No.XDB41000000);the Natural Science Foundation of China(Grant No.42103037 and 42073029);the Fundamental Research Funds for the Central Universities.Thanks are due to Xiang-Ping Zha for help with the O isotope analysis,to Ting Liang for help with LA-ICPMS zircon U-Pb dating and trace element measurements.; Zircon geochemistry such as U-Pb and O isotopes have been widely used in dating and tracing complex geological processes.However,it still remains unclear how fluid action affects zircon geochemistry during metamorphic...; 关键词：Subduction zone Fluid action METASOMATISM ZIRCON O isotope U-Pb dating

Zircon within chromitite requires revision of the tectonic history of the Eoarchean Itsaq Gneiss complex,Greenland: 《Geoscience Frontiers》2023年第6期273-285,共13页Hikaru Sawada Tomoaki Morishita Adrien Vezinet Richard Stern Kenichiro Tani Ikuya Nishio Kanta Takahashi D.Graham Pearson Kristoffer Szilas; supported by JSPS KAKENHI Grant Numbers 16H05741,19KK0092;Kana-zawa SAKIGAKE 2018 to T.M.,and 20 K14571 to H.S..K.S.thanks the Carlsberg Foundation for support via grant CF18-0090.; The Ujaragssuit Nunat layered(UNL)unit in the Itsaq Gneiss Complex,west Greenland,has been consid-ered to contain one of the oldest chromitites on Earth based on~ca.4.1 Ga Hadean whole rock Pt-Os model ages and ca.3.8...; 关键词：ARCHEAN Itsaq gneiss complex Ultramafic rock METASOMATISM

Geology and mineralization of the Bayan Obo supergiant carbonatite-type REE-Nb-Fe deposit in Inner Mongolia, China: A review被引量：3: 《China Geology》2023年第4期716-750,I0004,I0005,共37页Yi-ke Li Chang-hui Ke Hong-quan She Deng-hong Wang Cheng Xu An-jian Wang Rui-ping Li Zi-dong Peng Ze-ying Zhu Kui-feng Yang Wei Chen Jian-wei Zi Wen-lei Song Yong-gang Zhao Li Zhang Hong Yu Bin Guo Sheng-quan Zhou Xing-yu Yuan Jing-yao Liu; jointly funded by the National Key Research and Development Program of China (2022YFC2905301);the National Natural Science Foundation of China (42072114);geological survey projects (DD20230366, DD202211695);the scientific research projects supported by the Baotou Steel (Group) Co., Ltd. (HE2224, HE2228, and HE2313)。; The Bayan Obo supergiant carbonatite-related rare-earth-element-niobium-iron(REE-Nb-Fe) endogenetic deposit(thereafter as the Bayan Obo deposit), located at 150 km north of Baotou City in the Inner Mongolia Autonomous...; 关键词：Rare earth elements Niobium ore Iron ore Fluorite ore Igneous carbonatite Fenitization METASOMATISM Anti-skarn Bayan Obo

Mobilization of Cu in the continental lower crust:A perspective from Cu isotopes: 《Geoscience Frontiers》2023年第5期17-38,共22页Chen-Hao Luo Rui Wang Yun Zhao Jian Huang Noreen J.Evans; supported by National Key R&D Program of China(2022YFF0800902);National Natural Science Foundation of China(No.42121002);the Open Research Project from the State Key Laboratory for Mineral Deposits Research,Nanjing University(2022-LAMD-K11);SinoProbe Lab 202204,State Key Laboratory of Geological Processes and Mineral Resources,China University of Geosciences(GPMR202110);the 111 Project(B18048);the Fundamental Research Funds for the Central Universities(2-9-2019-034).; Recent studies have shown that Cu-rich sulfide accumulates in the lower continental crust and serves as a critical reservoir to balance Cu depletion in the upper crust.Recycling of Cu in the lower crust is also assume...; 关键词：Cu isotope of lower continental crust Cu mobilization METASOMATISM Fluid interaction Partial melting

Petrogenetic characterization of the host rocks of the Sanaga iron ore prospect,southern Cameroon: 《Acta Geochimica》2023年第2期195-220,共26页Tasin Godlove Bafon Anthony Temidayo Bolarinwa Cheo Emmanuel Suh Temesgen Oljira Bekele Ayele Bedada Gilles Nyuyki Ngoran Kevin Ijunghi Ateh Boris Martial Keuko Djoumbissie Cho Terence Ngang; The Sanaga iron ore prospect is a recent discovery in the Nyong Series with a resource estimated at 82.9 Mt at 32.1%Fe and whose origin remains debatable.The mineralization occurs as NE-SW oriented discontinuous lenti...; 关键词：Magnetite-pyroxene-gneiss METASOMATISM Ilmenite exsolution Hematite fracture-filling Skarn type mineralization Nyong Series

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