 | | Journal (article/letter/editorial) | | MICROSTRUCTURAL INVESTIGATION OF NEW POLYTYPES OF PARISITE-(Ce) BY HIGH-RESOLUTION TRANSMISSION ELECTRON MICROSCOPY...Test Center, China University of Geosciences, Wuhan, 430074, Peopleâs Republic of China DOUXING LI Laboratory...110015, Peopleâs Republic of China ABSTRACT Five new polytypes of parisite-(Ce) [CaCe2(CO3)3F2] from a rare-earth-mineral...aegirine-bearing granite pluton in Sichuan Province, southwestern China, were found by HRTEM: 6R2, 8H, 14H...[CO3] groups between the unit layers of parisite-(Ce). The observed microstructures may be affected by |  | Andersen, Allen K., Clark, James G., Larson, Peter B., Donovan, John J. (2017) REE fractionation, mineral speciation, and supergene enrichment of the Bear Lodge carbonatites, Wyoming, USA. Ore Geology Reviews, 89. 780-807 doi:10.1016/j.oregeorev.2017.06.025 | Journal (article/letter/editorial) | | of rare earth elements (e.g., La: 4140-21000 ppm, Ce: 9220-35800 ppm, Nd: 4800-13900 ppm). The central...substantially upgraded (e.g., La: 54500-66800 ppm, Ce: 11500-92100 ppm, Nd: 4740-31200 ppm) in carbonatite...crystallization of cerianite and accompanying negative Ce anomalies in secondary fluorocarbonates and phosphates...complexes of the Kola Peninsula, the Maoniuping REE deposit, China, and lateritically weathered carbonatite...complexes, Namibia; JuquiĂĄ, Brazil; Bayan Obo, China; Karonge, Burundi; and the Barra do ItapirapuĂŁ carbonatite |  | Nedosekova, Irina, Vladykin, Nikolay, Udoratina, Oksana, Belyatsky, Boris (2021) Ore and Geochemical Specialization and Substance Sources of the Ural and Timan Carbonatite Complexes (Russia): Insights from Trace Element, RbâSr, and SmâNd Isotope Data. Minerals, 11 (7) 711 doi:10.3390/min11070711 | Journal (article/letter/editorial) | | carbonatites: Mountain Pass (USA) and Bayun-Obo (China) provide more than half of the world production...Miaoya, Daluxiang, Maoniuping (Qinling and Mianning-Dechang orogenic belts, China [11,17â19]). In the...Baidashevskoe (Nb), 10âIshkulskoe (Nb), 11âIlmenskoe, 97 mine (Nb and REE), 12âKhaldikhinskoe, 13âSungulskoe....9âBaidashevskoe (Nb), 10âIshkulskoe (Nb), 11âIlmenskoe, 97 mine (Nb and The REE),largest 12âKhaldikhinskoe, 13âSungulskoe... and aluminosilicate glasses doped with REE (La, Ce, Y, Sm, Pr, Nd); the concentrations of Mg, Ca, Si |  | Cangelosi, Delia, Smith, Martin, Banks, David, Yardley, Bruce (2020) The role of sulfate-rich fluids in heavy rare earth enrichment at the Dashigou carbonatite deposit, Huanglongpu, China. Mineralogical Magazine, 84 (1) 65-80 doi:10.1180/mgm.2019.78 | Journal (article/letter/editorial) | | the Dashigou carbonatite deposit, Huanglongpu, China Delia Cangelosi a,*, Martin Smith b, David Banks...north-western part of the Qinling orogenic belt in central China. Calcite carbonatite dykes at the Dashigou open...mostly in magmatic REE minerals, mainly monazite-(Ce), and typically have âLREE/(HREE+Y) ratios from 9...altered calcite carbonatites, magmatic monazite-(Ce) is partially to fully replaced by HREE-enriched...such as Huanglongpu, (central Shanxi Province, China), the Lofdal complex, (north-western Namibia) and |  | Xu, Cheng, Kynicky, Jindrich, Chakhmouradian, Anton R., Campbell, Ian H., Allen, Charlotte M. (2010) Trace-element modeling of the magmatic evolution of rare-earth-rich carbonatite from the Miaoya deposit, Central China. Lithos, 118 (1) 145-155 doi:10.1016/j.lithos.2010.04.003 | Journal (article/letter/editorial) | | rare-earth-rich carbonatite from the Miaoya deposit, Central China Cheng Xu a,â, Jindrich Kynicky b, Anton R. Chakhmouradian...Crustal Evolution, Peking University, Beijing 100871, China Department of Geology and Pedology, Mendel University...Fractional crystallization REE deposits Miaoya China a b s t r a c t Carbonatites are known to contain...conjecture, calcite from the Miaoya carbonatite (China), analyzed in situ by laser-ablation inductively-coupled-plasma...et al., 2008). The Miaoya carbonatite stocks in China consist predominantly of calcite and contain abundant |  | | Journal (article/letter/editorial) | | minerals, mainly fergusonite-(Y) and bastnĂ€site-(Ce). The host aegirine-nepheline syenite was metasomatically...carbonatite-associated deposits (Bayan Obo and Maoniuping, China; Mount Weld, Australia) or ion adsorption...weathering of REE-enriched granitoids (southern China). Carbonatites are enriched in light REEs (LREEs;...REE-fluorocarbonates, bastnĂ€site-(Ce), synchysite-(Ce) and parisite-(Ce), and monazite-(Ce). Other igneous rocks...magmatic britholite fluorbritholite-(Ce) (britholite group) (Ce,Ca)5(SiO4)3F x Ideal formulas of hydrothermal |
|
