 | | Report (issue) | | Cerianite-(Ce) Crystal Data: Cubic. Physical Properties: Radioactive. Point Group: 4/m 321m. Hardness...from phonolites and nepheline syenites (Minas Gerais, Brazil); in pegmatite (Kabuland, Norway). Association:...Canada); hydromica, kaolinite, "limonite" (Morro do Ferro, Brazil); fluocerite, bastnasite, tornebohmite...Sierra de Bermjillo, Durango, Mexico. On Morro do Ferro, Pocos de Caldas plateau, Minas Gerais, Brazil... M37257. References: (1) Graham, A.R. (1955) Cerianite: a new rare-earth oxide mineral. Amer. Mineral |  | | Journal (article/letter/editorial) | | ANALOGUE STUDIES: GEOLOGY AND MINERALOGY OF MORRO DO FERRO, BRAZIL P.M.C. B A R R E T T O a n d K. F U J I...Brazilian Nuclear Energy Commission (CNEN), Rio de Janeiro (Brazil) (Accepted for publication January 15, 1986)...analogue studies: Geology and mineralogy of Morro do Ferro, Brazil. In: N.A. Chapman and J.A.T. Smellie (Guest-Editors)...understanding of the Th- and REE-rich orebody at Morro do Ferro as a possible natural analogue for a radioactive...and weathered. The thorium minerals consist of Zr--Ce--La-Nd-rich resistates. The dominant form in which |  | Gomes, Celso de Barros, Azzone, Rogério Guitarrari, Rojas, Gaston Eduardo Enrich, Guarino, Vincenza, Ruberti, Excelso (2021) Agpaitic Alkaline Rocks in Southern Brazilian Platform: A Review. Minerals, 11 (9) 934 doi:10.3390/min11090934 | Journal (article/letter/editorial) | | Rocks in Southern Brazilian Platform: A Review Celso de Barros Gomes 1, *, Rogério Guitarrari Azzone 1 ,... University of São Paulo, São Paulo 05508-080, Brazil; rgazzone@usp.br (R.G.A.); gastonenrich@usp.br...occurrences located in southern Brazil and at the border between Brazil and Paraguay. All the Brazilian...Triassic. The most significant occurrence is Poços de Caldas, the largest alkaline massif in South America...main to late-magmatic Main References 1 Poços de Caldas 79–87 (Ar-Ar, K-Ar) 2 Itatiaia 67.5–71 |  | 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 |  | 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 |  | | Book (edition) | | Salinas, Peru, H Variscite, xx 5 mm, Iturnbiara, Brazil, H Rhodocbrosite, polished, 50 mm, Capillitas,... China, H Page 1: MuscO\ite. 45 mm, Linopolis, Brazil, H Page 2: Vivianite, I 00 mm, Huanzala, Bolivia...Ethiopia, G Page 12: Brazilianite, 35 mm, Linopolis, Brazil, H Page 13: Gold, 35 mm.Eagle's est Mine, California... Prague Printedin Czech Republicby Finidr.u.o .. Ce,ky Te~in 14/02/03/0 I All rights reserved•• ·o pan..."Dana's System of Mineralogy•· ( 1944, I 951, 1962). de Fourestier (1999) and Strunz and Nickel (2001). Mi11eral |  | | Report (volume) | | formulas by the chemical symbol for either cerium (Ce) or yttrium VII MINERALS OF THE RARE EARTHS (Y);...for example, the formula for calkinsite is given as Ce 2 (C0 3 h · 4H 20. This does not mean that cerium...member. Some formulas, such as that of cordylite (Ce, LahBa (C0 3 ) 3 F 2 , are written so as to emphasize...element Cerium subgroup: Lanthanum (La) - Cerium (Ce) - - - Praseodymium (Pr)Neodymium (Nd) Promethium...- ·· Abukumalite - (Y, Ce, Ca) 5 (Si0 4 , P0 4 ) 3 (0, OH, F) Aeschynite - (Ce, Ca, Fe, Th) (Ti, Nb) 20 |  | | Book | | A. F. Corey, M. S. Corey, R. 'l\T. Deane, A. P. De Carvalho, L. F. Dellwig, M. Deul, S. B. Dickinson... . . . . . . . . . . . . . . . . . . . . . . . Brazil . . . . . . . . . . . . . . . . . . . . . . . ......... . ..... . ........ . ................ . Brazil ...... . .... .... ............... .. ....... ...all com.ets are turned from the, sun. I do not knoiv why they do this, whether it is etiquette among thern...oxides, hydroxides, oxygen salts, and silicates. They do not occur naturally as native elements, sul:6des |  | | Book (edition) | | wih fH e4agi"” ef) rk bias iycraton as nam Van ce Y ear ieaad Wi 56 ett f tT 7 Pretace The amount...es: CW DB DE DG DJ DK DM DO DP DS EB EO EE FM GD GG GH GM Arnold Hampson David Baker Ben De Witt William... All faces or other surfaces on a given mineral do not necessarily exhibit the same luster. Some minerals...more references where all references are inadequate, do not contain good bibliographies, or are in conflict...CLASS: 4/mmm SPACE GROUP: P4/ncc; P4/nmm(Pseudo) Ve De LATTICE CONSTANTS: Ga tae 9908 3 STRONGEST DIFFRACTION | | | Book (edition) | | Tsurneb, Namibia, (lower, right) gold, Amazonas, Brazil All specimens from the collection of Eugene and...figure caption code. Arnold Hampson David Baker Ben De Witt William Larson Carlos Barbosa Cal and Kerith...Mines cw Charles and Marcelle Weber DB Dan Behnke DE Demetrios Pohl DG Richard Graeme DJ D. K. Jones Douglas...Douglas K. Miller DK Arizona-Sonora Desert DM Museum DO = "Donald Olson Delma Perry DP DS David Shannon EB...forth. All faces or other surfaces on a given mineral do not necessarily exhibit the same Juster. Some minerals |
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Morro do Ferro, Poços de Caldas, Minas Gerais, Brazil