 | | Journal (article/letter/editorial) | | (REE) carbonates from alkaline pegmatites of Mount Malosa, Malawi AlessAndro GuAstoni,1 FAbrizio nestolA,1...chemistry and alteration of bastnäsite-(Ce), parisite-(Ce), and synchysite(Ce) was investigated by EMPA, TG, DTG...Significant amounts of OH in both the parisite-(Ce) and synchysite-(Ce) were found, and these data are the first...for parisite and synchysite. Parisite-(Ce) and synchysite-(Ce) OH end-members have not been described...carbonates, Mount Malosa, Malawi, hydration introduction The crystal structures of bastnäsite-(Ce) and synchysite-(Ce) |  | Zaitsev, A. N., Chakhmouradian, A. R., Siidra, O. I., Spratt, J., Williams, C. T., Stanley, C. J., Petrov, S. V., Britvin, S. N., Polyakova, E. A. (2011) Fluorine-, yttrium- and lanthanide-rich cerianite-(Ce) from carbonatitic rocks of the Kerimasi volcano and surrounding explosion craters, Gregory Rift, northern Tanzania. Mineralogical Magazine, 75 (6) 2813-2822 doi:10.1180/minmag.2011.075.6.2813 | Journal (article/letter/editorial) | | 2813–2822 Fluorine-, yttrium- and lanthanide-rich cerianite-(Ce) from carbonatitic rocks of the Kerimasi volcano...2011; Accepted 23 August 2011] ABSTR ACT Cerianite-(Ce), ideally CeO2, occurs as rounded grains up...cationanion distance of 2.3471(6) Å. The cerianite-(Ce) is considered to be a late-stage secondary...mineral in the carbonatitic rocks. K EY WORDS : cerianite-(Ce), ceria, oxyfluoride, carbonatite, Raman spectroscopy...Kerimasi, Kisete, Loluni, Tanzania. Introduction CERIANITE-(CE), ideally CeO2, was originally described from |  | | Journal (article/letter/editorial) | | International Micromounters Journal 13:7–8. CERIANITE-(CE) FROM THE WAUSAU COMPLEX, MARATHON COUNTY, WISCONSIN...silicic Nine Mile Pluton (1505.9 ± 2.7 Ma). Cerianite-(Ce), CeO2, is a very rare mineral, typically formed...has oxidized to the much less soluble Ce4+. Cerianite-(Ce) was first identified as a late phase in material...pegmatite (Buchholz, Falster, and Simmons 2013). Cerianite(Ce) occurs in a late-stage smectite-group clay...been present were mobilized. EMP analysis of the cerianite revealed the presence of 2–5 wt. % ThO2, with |  | Chakrabarty, A., Mitchell, R. H., Ren, M., Sen, A. K., Pruseth, K. L. (2013) Rinkite, cerianite-(Ce), and hingganite-(Ce) in syenite gneisses from the Sushina Hill Complex, India: occurrence, compositional data and petrogenetic significance. Mineralogical Magazine, 77 (8) 3137-3153 doi:10.1180/minmag.2013.077.8.08 | Journal (article/letter/editorial) | | Vol. 77(8), pp. 3137–3153 Rinkite, cerianite-(Ce), and hingganite-(Ce) in syenite gneisses from the Sushina...restricted mainly to the agpaitic rocks are rinkite, cerianite-(Ce), and cerian thorite. Rinkite, formed at the...F) with very high Nd/Ce (>2.46) ratios reported to date. Hydrothermal cerianite-(Ce), formed by the decomposition...crystals rich in Ce (~63 74 wt.% CeO2) and Y (6.03 11.69 wt.% Y2O3). The presence of cerianite-(Ce) indicates...hydrothermal fluid in an oxidizing milieu. Hingganite-(Ce) is present in the miaskitic unit and is considered |  | | Journal (issue) | | showing location of the Grenville Province and its southern subdivisions; modified from Price and Douglas...Boundary Zone (CMBBZ) of the Grenville across southern Quebec, southeastern Ontario and northwestern...(Hogarth, 1970). During the Paleozoic, much of the southern portion of the study area was covered by sediments...et al., 1988). Younger rocks are unknown in the region; if they were once present they were probably eroded...Associated species include altered pyrite, allanite-(Ce) and intergrowths of levyne and erionite. The meionite |  | Alles, Jonas, Ploch, Alexander-Maria, Schirmer, Thomas, Nolte, Nicole, Liessmann, Wilfried, Lehmann, Bernd (2019) Rare-earth-element enrichment in post-Variscan polymetallic vein systems of the Harz Mountains, Germany. Mineralium Deposita, 54 (2) 307-328 doi:10.1007/s00126-018-0847-8 | Journal (article/letter/editorial) | | PAAS-normalized REE patterns with a Eu peak but without Ce or Y anomalies and with a steeply dipping HREE pattern...identifies these patterns as dominated by synchysite-(Ce–Nd) with strong Eu enrichment in the weight percent... which seems to be a diagnostic feature of the region and suggests a large-scale Mesozoic fluid system...rare earth elements (REE), especially light REE (La, Ce, Sm, Eu) (Möller et al. 1979, 1984; Lüders et al...near Wernigerode, Middle Harz Mountains. Synchysite-(Ce) was also identified in the St. Andreasberg district |  | | Book | | in most of the placer deposits of eastern and southern Indian coasts. Monazite resource of 12.45 million...very low-grade Yttrium ore. The carbonatites of southern India offer scope for exploration of REE, dominated...speculated by AMD from Siwana ring complex. In southern India, peraluminous to peralkaline Kanigiri granite...Panchmahal District, Gujarat . . . . . . . . . 3.6 Southern India . . . . . . . . . . . . . . . . . . . ..... . . . . . . . . . . . . . . . . . . . . 4.6 Southern India . . . . . . . . . . . . . . . . . . . . |
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