Volume 69 Received 16 January 2013 | |||||||||||
| |||||||||||
aDepartment of Geosciences, University of Arizona, 1040 E. 4th Street, Tucson, Arizona 85721-0077, USA, and bLunar and Planetary Laboratory, University of Arizona, 1629 E. University Blvd, Tucson, AZ. 85721-0092, USA
Correspondence e-mail: shaunnamm@email.arizona.edu
Lanthanite-(Nd), ideally Nd2(CO3)3·8H2O [dineodymium(III) tricarbonate octahydrate], is a member of the lanthanite mineral group characterized by the general formula REE2(CO3)3·8H2O, where REE is a 10-coordinated rare earth element. Based on single-crystal X-ray diffraction of a natural sample from Mitsukoshi, Hizen-cho, Karatsu City, Saga Prefecture, Japan, this study presents the first structure determination of lanthanite-(Nd). Its structure is very similar to that of other members of the lanthanite group. It is composed of infinite sheets made up of corner- and edge-sharing of two NdO10-polyhedra (both with site symmetry ..2) and two carbonate triangles (site symmetries ..2 and 1) parallel to the ab plane, and stacked perpendicular to c. These layers are linked to one another only through hydrogen bonding involving the water molecules.
For background to the lanthanite mineral group, see: Berzelius (1825
); Blake (1853
); Coutinho (1955
); Shinn & Eick (1968
); Ansell et al. (1976
); Dal Negro et al. (1977
); Cesbron et al. (1979
); Roberts et al. (1980
); Fujimori (1981
); Svisero & Mascarenhas (1981
); Nagashima et al. (1986
); Atencio et al. (1989
); Coimbra et al. (1989
); Graham et al. (2007
). For information on dawsonite, see: Corazza et al. (1977
). For details of rigid-body motion, see: Downs et al. (1992
). For resources for bond-valence calculations, see: Brese & O'Keeffe (1991
).
|
|
|
Data collection: APEX2 (Bruker, 2004
); cell refinement: SAINT (Bruker, 2004
); data reduction: SAINT; program(s) used to solve structure: SHELXS97 (Sheldrick, 2008
); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008
); molecular graphics: XtalDraw (Downs & Hall-Wallace, 2003
); software used to prepare material for publication: publCIF (Westrip, 2010
).
Supplementary data and figures for this paper are available from the IUCr electronic archives (Reference: WM2719 ).
The authors gratefully acknowledge Marcus Origlieri for providing the lanthanite-(Nd) sample to the RRUFF Project. Funding support of this study was given by the Arizona Science Foundation, the Brazilian government (CNPq 202469/2011-5) and NASA NNX11AP82A, Mars Science Laboratory Investigations. Any opinions, findings, and conclusions or recommendations expressed in this material are those of the author(s) and do not necessarily reflect the views of the National Aeronautics and Space Administration.
Ansell, H. G., Pringle, G. J. & Roberts, A. C. (1976). Geol. Sur. Can. 76-1B, 353-355. ![[ChemPort]](../../../../../../logos/chemportborder.gif)
Atencio, D., Bevins, R. E., Fleischer, M., Williams, C. T. & Williams, P. A. (1989). Mineral. Mag. 53, 639-642.
![[ChemPort]](../../../../../../logos/chemportborder.gif)
Berzelius, J. (1825). Taschenbuch für die gesamte Mineralogie mit Hinsicht auf die neuesten Entdeckungen, 19, 193-218.
Blake, W. P. (1853). Am. J. Sci. 16, 228-230.
Brese, N. E. & O'Keeffe, M. (1991). Acta Cryst. B47, 192-197.
![[details]](../../../../../../b/graphics/details.gif)
Bruker (2004). APEX2 and SAINT. Bruker AXS Inc., Madison, Wisconsin, USA.
Cesbron, F., Sichère, M. C., Vachey, H., Cassedanne, J. P. & Cassedanne, J. O. (1979). Bull. Soc. Fr. Minéral. Cristallogr. 102, 342-347. ![[ChemPort]](../../../../../../logos/chemportborder.gif)
Coimbra, A. M., Coutinho, J. M. V., Atencio, D. & Iwanuchi, W. (1989). Can. Mineral. 27, 119-123. ![[ChemPort]](../../../../../../logos/chemportborder.gif)
Corazza, E., Sabelli, C. & Vannucci, S. (1977). Neues Jahrb. Mineral. Monatsh. pp. 381-397.
Coutinho, J. M. V. (1955). Bol. Fac. Fil. Ciênc. Letr. USP, 186, 119-126.
Dal Negro, A., Rossi, G. & Tazzoli, V. (1977). Am. Mineral. 62, 142-146. ![[ChemPort]](../../../../../../logos/chemportborder.gif)
Downs, R. T., Gibbs, G. V., Bartelmehs, K. L. & Boisen, M. B. (1992). Am. Mineral. 77, 751-757. ![[ChemPort]](../../../../../../logos/chemportborder.gif)
Downs, R. T. & Hall-Wallace, M. (2003). Am. Mineral. 88, 247-250. ![[ChemPort]](../../../../../../logos/chemportborder.gif)
Fujimori, K. (1981). An. Acad. Bras. Ciênc. 53, 147-152. ![[ChemPort]](../../../../../../logos/chemportborder.gif)
Graham, I. T., Pogson, R. E., Colchester, D. M., Hergt, J., Martin, R. & Williams, P. A. (2007). Can. Mineral. 45, 1389-1396.
![[ChemPort]](../../../../../../logos/chemportborder.gif)
Nagashima, K., Miyawaki, R., Takase, J., Nakai, I., Sakurai, K., Matsubara, S., Kato, A. & Iwano, S. (1986). Am. Mineral. 71, 1028-1033. ![[ChemPort]](../../../../../../logos/chemportborder.gif)
Roberts, A. C., Chao, G. Y. & Cesbron, F. (1980). Geol. Sur. Can. 80-1C, 141-142. ![[ChemPort]](../../../../../../logos/chemportborder.gif)
Sheldrick, G. M. (2005). SADABS. University of Göttingen, Germany.
Sheldrick, G. M. (2008). Acta Cryst. A64, 112-122.
![[details]](../../../../../../a/graphics/details.gif)
Shinn, D. B. & Eick, H. A. (1968). Inorg. Chem. 7, 1340-1345.
![[ISI]](../../../../../../logos/isiborder.gif)
Svisero, D. P. & Mascarenhas, Y. (1981). Atas do 3° Simp. Reg. Geol., Núcleo S. P. 1, 295-304.
Westrip, S. P. (2010). J. Appl. Cryst. 43, 920-925.
![[details]](../../../../../../j/graphics/details.gif)