Результаты исследований: Научные публикации в периодических изданиях › статья › Рецензирование
Modular nature of the polysomatic pyrochlore-murataite series. / Laverov, N. P.; Urusov, V. S.; Krivovichev, S. V.; Pakhomova, A. S.; Stefanovsky, S. V.; Yudintsev, S. V.
в: Geology of Ore Deposits, Том 53, № 4, 08.2011, стр. 273-294.Результаты исследований: Научные публикации в периодических изданиях › статья › Рецензирование
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TY - JOUR
T1 - Modular nature of the polysomatic pyrochlore-murataite series
AU - Laverov, N. P.
AU - Urusov, V. S.
AU - Krivovichev, S. V.
AU - Pakhomova, A. S.
AU - Stefanovsky, S. V.
AU - Yudintsev, S. V.
PY - 2011/8
Y1 - 2011/8
N2 - Synthetic analogues of murataite, a very rare mineral-a complex oxide of REE, actinide, Ti, Fe, and other elements,-are of great interest as confinement matrices of radioactive wastes. They are produced by sintering (1200-1300°C) and melting (1500-1600°C) with subsequent crystallization of the melt. Four structural varieties of murataite distinguished by unit-cell parameters have been established by TEM study. All these varieties are derivatives of the fluorite structure designated as murataite 3C, 5C, 7C, and 8C depending on repetition factor of a parameter of the fluorite subcell. The structural features of the synthetic murataite varieties are analyzed in this paper based on data obtained from high-resolution electron microscopy, microdiffraction, and X-ray refinement. The hypothesis of a modular structure of the members of polysomatic pyrochlore-murataite series has been confirmed. At the same time, the structural modules are zero-dimensional rather than two-dimensional as had previously been suggested. The combinations of zero-dimensional modules in 3D space create the entire structural diversity of the polysomatic series.
AB - Synthetic analogues of murataite, a very rare mineral-a complex oxide of REE, actinide, Ti, Fe, and other elements,-are of great interest as confinement matrices of radioactive wastes. They are produced by sintering (1200-1300°C) and melting (1500-1600°C) with subsequent crystallization of the melt. Four structural varieties of murataite distinguished by unit-cell parameters have been established by TEM study. All these varieties are derivatives of the fluorite structure designated as murataite 3C, 5C, 7C, and 8C depending on repetition factor of a parameter of the fluorite subcell. The structural features of the synthetic murataite varieties are analyzed in this paper based on data obtained from high-resolution electron microscopy, microdiffraction, and X-ray refinement. The hypothesis of a modular structure of the members of polysomatic pyrochlore-murataite series has been confirmed. At the same time, the structural modules are zero-dimensional rather than two-dimensional as had previously been suggested. The combinations of zero-dimensional modules in 3D space create the entire structural diversity of the polysomatic series.
UR - http://www.scopus.com/inward/record.url?scp=80051999212&partnerID=8YFLogxK
U2 - 10.1134/S1075701511040040
DO - 10.1134/S1075701511040040
M3 - Article
AN - SCOPUS:80051999212
VL - 53
SP - 273
EP - 294
JO - Geology of Ore Deposits
JF - Geology of Ore Deposits
SN - 1075-7015
IS - 4
ER -
ID: 49250247