 | 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) | | and lanthanide-rich cerianite-(Ce) from carbonatitic rocks of the Kerimasi volcano and surrounding explosion...explosion craters, Gregory Rift, northern Tanzania A. N. ZAITSEV1,2,*, A. R. CHAKHMOURADIAN3, O. I. SIIDRA4...2011; Accepted 23 August 2011] ABSTR ACT Cerianite-(Ce), ideally CeO2, occurs as rounded grains up...altered calcite carbonatite lava from the Kerimasi volcano, and as euhedral crystals up to 200 mm across...explosion craters in the Gregory Rift, northern Tanzania. X-ray powder diffraction data (a = 5.434(5) Å) |  | | Journal (article/letter/editorial) | | 2004. Species list: Silver Coin mine, Iron Point district, Edna Mountains, Humboldt Co., Nevada, USA. International...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 |  | 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 (article/letter/editorial) | | these two cations have similar ionic radii, and Ce is more than six times as abundant as Pr, it seems...predictable. However, under oxidizing conditions, Ce loses four electrons instead of three resulting in...(58Ce4+ = [Xe]4f 0). Although the crustal abundance of Ce is only ~60 ppm (Rudnick and Gao 2014), fractionating...fractionating processes can concentrate it to the point where Ce-dominant minerals crystallize. Indeed, there are...are more than 150 known minerals with essential Ce in their formulas. The majority of these minerals contain |  | Zaitsev, A. N., Williams, C. T., Britvin, S. N., Kuznetsova, I. V., Spratt, J., Petrov, S. V., Keller, J. (2010) Kerimasite, Ca3Zr2(Fe23+Si)O12, a new garnet from carbonatites of Kerimasi volcano and surrounding explosion craters, northern Tanzania. Mineralogical Magazine, 74 (5) 803-820 doi:10.1180/minmag.2010.074.5.803 | Journal (article/letter/editorial) | | carbonatites of Kerimasi volcano and surrounding explosion craters, northern Tanzania A. N. ZAITSEV1,2...extinct nephelinitic volcano Kerimasi and surrounding explosion craters in northern Tanzania. The mineral occurs...The name is given after the locality, Kerimasi volcano, Tanzania. K EY WORDS : kerimasite, kimzeyite...composition, crystal structure, Kerimasi, Loluni, Kisete, Loolmurwak, Tanzania. * E-mail: burbankite@gmail...et al., 1994), Oldoinyo Lengai, Gregory rift, Tanzania (Dawson et al., 1995; Dawson and Hill, 1998), |  | Zaitsev, A. N., Avdontseva, E. Yu., Britvin, S. N., Demény, A., Homonnay, Z., Jeffries, T. E., Keller, J., Krivovichev, V. G., Markl, G., Platonova, N. V., Siidra, O. I., Spratt, J., Vennemann, T. (2013) Oxo-magnesio-hastingsite, NaCa2(Mg2Fe3+3 )(Al2Si6)O22O2, a new anhydrous amphibole from the Deeti volcanic cone, Gregory rift, northern Tanzania. Mineralogical Magazine, 77 (6) 2773-2792 doi:10.1180/minmag.2013.077.6.06 | Journal (article/letter/editorial) | | the Deeti volcanic cone, Gregory rift, northern Tanzania A. N. ZAITSEV1,2,*, E. YU. AVDONTSEVA3, S. N....Deeti volcanic cone in the Gregory rift (northern Tanzania). The mineral occurs as megacrysts up to 12 cm...isotopic composition, Deeti cone, Gregory rift, Tanzania. Introduction * E-mail: burbankite@gmail.com DOI:...Natron Engaruka area in the Gregory rift, northern Tanzania, is a well known volcanic A. N. ZAITSEV ET AL...primarily due to the activity of Oldoinyo Lengai volcano that has historically erupted carbonatitic and |  | | Journal (article/letter/editorial) | | 550–600 cm–1 region and phosphate antisymmetric stretching modes in the 900–1200 cm–1 region. Also obvious...The afmite spectrum has multiple bands in the OH region, both sharp and broad. The sharp bands more likely...bonding with isolated H2O groups in the interlayer region. Afmite is closely related structurally to the...carbonatites of Kerimasi volcano and surrounding explosion craters, northern Tanzania. Mineral. Mag.,...Kerimasite is a new Zr garnet from the Kerimasi nephelinite/ carbonatite volcano and Loluni, Kisete, and Loolmurwak |  | Li, Xiang, Liu, Yun-gui, Song, Hai-peng, Zhang, Qian, Wu, Xiang (2020) Thermal stability and compressibility of bastnaesite. Physics and Chemistry of Minerals, 47 (3) doi:10.1007/s00269-020-01084-9 | Journal (article/letter/editorial) | | Fig. 2a) are observed, where v1-v6 is assigned to Ce-F stretching vibrations and lattice modes, v 7 is...that the decomposition temperature of bastnaesite-(Ce) is 673 K. The decomposition temperature of bastnaesite-(La)...of calcite group carbonates, except bastnaesite-(Ce) and bastnaesite(La). For polyanionic carbonates... − enhanced ~ 50% values of K0 for bastnaesite-(Ce) and bastnaesite-(La) (Richard 2017). The bulk modulus...thermodynamic properties of bastnäsite-(Ce) and parisite-(Ce). Chem Geol 392:87–101 Halliday D, Resnick |  | Vind, Johannes, Malfliet, Annelies, Blanpain, Bart, Tsakiridis, Petros, Tkaczyk, Alan, Vassiliadou, Vicky, Panias, Dimitrios (2018) Rare Earth Element Phases in Bauxite Residue. Minerals, 8 (2) 77 doi:10.3390/min8020077 | Journal (article/letter/editorial) | | genesis with other deposits in the Mediterranean region. Bauxite ore bodies form layers or irregular bodies...state in oxidative conditions. It precipitates as cerianite, (Ce4+ ,Th)O2 , in the upper parts of some bauxite...category, mainly phosphate phases like monazite ((Ce,La,Nd,Th)PO4 ) and xenotime (YPO4 ) have been identified...commonly REE fluorocarbonates of the bastnäsite (Ce(CO3 )F) mineral group or phosphates of monazite group...Cerium can occur in the oxide form as authigenic cerianite [26]. Some occurrences of REEs in bauxites are |  | Hurai, Vratislav, Huraiová, Monika, Slobodník, Marek, Thomas, Rainer (2015) Geofluids - Developments in Microthermometry, Spectroscopy, Thermodynamics, and Stable Isotopes. Elsevier. doi:10.1016/c2014-0-03099-7 | Book | | fluid and ultimately crystallizes at 123 °C. The region between 42 and 123 °C is a “no-man’s land,” within...the vapor-saturated halite liquidus. The L + G region is subdivided into smaller parts by isoplethal...thus encompassing the outer surface of the L + G region. The isoplethal loops are subdivided into boiling... The fluid B remains homogeneous in the shaded region. majority of natural brine inclusions correspond...composition. Hence, each point within the twophase L + G region has its own unique combination of the coexisting |
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