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Identifying xenocrystic tourmaline in Himalayan leucogranites
American Mineralogist, 2023Abstract Tourmaline is a common autocrystic mineral in granitic and pegmatitic rocks that records valuable information on the physicochemical evolution of magmas. However, xenocrystic tourmaline that does not crystallize from host magmas is also common but seldom reported and notoriously difficult to identify.
Jinsheng Han +4 more
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Petrochemical characteristics of leucogranite and a case study of Bengbu leucogranites
Science Bulletin, 2009Leucogranites have a relatively narrow variation in SiO2 content (70.5%–75.5%). Giving similar SiO2 content, leucogranites have relatively higher Al2O3 (>13.5%) and lower TFeO + MgO (
SuShu Guo, ShuGuang Li
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Experimental Crystallization of Leucogranite Magmas
Journal of Petrology, 1995Abstract Both crystallization and melting experiments have been carried out on two natural, biotite-muscovite (DK) and tourmaline-muscovite (GB) High Himalayan leucogranites (HHL) at 4 kbar, logfO2 = FMQ−0·5, aH2O = 1−0⋅03, and at five temperatures between 803 and 663°C H2O contents of the quenched glasses were analysed by ion ...
BRUNO SCAILLET +2 more
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Lithos, 2002
In the Higher Himalaya of the region from Cho Oyu to the Arun valley northeast of Makalu, the Miocene leucogranites are not hosted only in the upper High Himalayan Crystallines (HHC); a network of dykes also cuts the lower HHC and the Lesser Himalayan Crystallines (LHC).
VISONA', DARIO, LOMBARDO B.
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In the Higher Himalaya of the region from Cho Oyu to the Arun valley northeast of Makalu, the Miocene leucogranites are not hosted only in the upper High Himalayan Crystallines (HHC); a network of dykes also cuts the lower HHC and the Lesser Himalayan Crystallines (LHC).
VISONA', DARIO, LOMBARDO B.
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Crustal generation of the Himalayan leucogranites
Tectonophysics, 1987Abstract Detailed studies of the Himalayan two-mica leucogranites, such as the Manaslu pluton, indicate that they have very uniform mineralogical, petrological and structural characteristics. One can relate their occurrence to the thickest zones of the underlying Tibetan Slab.
P. Le Fort +6 more
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Himalayan Leucogranites: Petrogenesis and Significance
ElementsHimalayan leucogranites crop out intermittently over 2000 km along the crest of the world’s youngest and largest mountain range. They are derived from partial melting of continental crust during a classic continental collisional orogeny. Studies of these leucogranites have significantly advanced knowledge of crustal anatexis, felsic magmatic ...
Fang-Zhen Teng, Fu-Yuan Wu
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Himalayan Leucogranites: Rare-metal Resources
ElementsHimalayan leucogranites were once overlooked for rare-metal resources because they initially were thought to have formed by in-situ partial melting of underlying high-grade metamorphic rocks. However, recent findings have revealed widespread rare-metal mineralizations of Be, Nb/Ta, Li/Rb/Cs, and W/Sn associated with leucogranites in the area ...
Fu-Yuan Wu +4 more
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Geochemical comparison between Himalayan and Hercynian leucogranites
Physics of the Earth and Planetary Interiors, 1984Abstract Isotopic (Sr, Pb, Nd, O), REE and trace element data from three Himalayan (Nepal) and six Hercynian (Brittany, France) leucogranites are compared. For the Himalayan granites—Makulu, Mustang and especially Manaslu—the 87Sr/86Sr versus 87Rb/86Sr scatter diagrams, and hence variability of the initial 87Sr/86Sr ratios, reflect heterogeneity of ...
Ph. Vidal +5 more
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