THE CRYSTAL STRUCTURE OF NA4(UO2) (CO3)3 AND ITS RELATIONSHIP TO SCHRöCKINGERITE
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dc.contributor.author | Li Y. | |
dc.contributor.author | Krivovichev S.V. | |
dc.contributor.author | Burns P.C. | |
dc.date.accessioned | 2021-03-04T07:00:00Z | |
dc.date.available | 2021-03-04T07:00:00Z | |
dc.date.issued | 2001 | |
dc.identifier | https://elibrary.ru/item.asp?id=13754359 | |
dc.identifier.citation | Mineralogical Magazine, 2001, 65, 2, 297-304 | |
dc.identifier.issn | 0026-461X | |
dc.identifier.uri | https://repository.geologyscience.ru/handle/123456789/26240 | |
dc.description.abstract | Crystals of the compound Na4(UO2)(CO3)3 have been synthesized and the structure has been solved. It is trigonal with a= 9.3417(6), c = 12.824(1) Å, V = 969.2(1) Å3, space group Pc1 and Z = 4. The structure was refined on the basis of F 2 (wR2 = 4.2%) for all unique data collected using Mo-Kα X-radiation and a CCD-based detector. The final R1 was 2.0%, calculated for 534 unique observed (F o ≥ 4σ F ) reflections, and the goodness-of-fit (S) was 0.91. The structure contains a uranyl tricarbonate cluster composed of a uranyl hexagonal bipyramid that shares three equatorial edges with CO3 triangles. The uranyl tricarbonate clusters are connected through NaO6 and NaO5 polyhedra, forming a heteropolyhedral framework structure. This compound may be related to a uranyl carbonate phase with the same composition which has been reported as an alteration phase on the surface of Chernobyl ‘lava’, and as a mineral in the Jachymov ore district, Czech Republic. | |
dc.title | THE CRYSTAL STRUCTURE OF NA4(UO2) (CO3)3 AND ITS RELATIONSHIP TO SCHRöCKINGERITE | |
dc.type | Статья |
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