Результаты исследований: Научные публикации в периодических изданиях › статья › Рецензирование
УТОЧНЕНИЕ КРИСТАЛЛИЧЕСКОЙ СТРУКТУРЫ МАНГАННЕПТУНИТА. / Золотарев Мл., А. А.; Кривовичев, С. В.; Яковенчук, В. Н.
в: ЗАПИСКИ РОССИЙСКОГО МИНЕРАЛОГИЧЕСКОГО ОБЩЕСТВА, № 1, 2007, стр. 118-123.Результаты исследований: Научные публикации в периодических изданиях › статья › Рецензирование
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TY - JOUR
T1 - УТОЧНЕНИЕ КРИСТАЛЛИЧЕСКОЙ СТРУКТУРЫ МАНГАННЕПТУНИТА
AU - Золотарев Мл., А. А.
AU - Кривовичев, С. В.
AU - Яковенчук, В. Н.
PY - 2007
Y1 - 2007
N2 - Refinement of crystal structure of mangan-neptunite, the manganese analogue of neptunitc, was carried out in the two space groups (Cc and C2/c). The mineral is monoclinic, the correct space group Cc; its unit cell parameters: a = 16.4821 (6), b = 12.5195(4), с = 10.0292 (3) A, p = 115.474( 1)°, V = 1868.31 A3. The crystal structure was refined to Д, = 0.0307 (wR2 = 0.0901) on the base of 4892 observed reflections with \Fhkl\ > 4o|fM;|. The most suitable model is acentric one, that is connected with the Ti- and (Fc, Mn, Mg)-ordering in the structure. Ti-octahcdra are strongly distorted and consist of one short bond Ti-О (1.7 A), one long bond (2.2 A) and four equal bonds (2.0 A). Fc-octahcdrons have regular shape, with all Fc-О bonds approximately equal.
AB - Refinement of crystal structure of mangan-neptunite, the manganese analogue of neptunitc, was carried out in the two space groups (Cc and C2/c). The mineral is monoclinic, the correct space group Cc; its unit cell parameters: a = 16.4821 (6), b = 12.5195(4), с = 10.0292 (3) A, p = 115.474( 1)°, V = 1868.31 A3. The crystal structure was refined to Д, = 0.0307 (wR2 = 0.0901) on the base of 4892 observed reflections with \Fhkl\ > 4o|fM;|. The most suitable model is acentric one, that is connected with the Ti- and (Fc, Mn, Mg)-ordering in the structure. Ti-octahcdra are strongly distorted and consist of one short bond Ti-О (1.7 A), one long bond (2.2 A) and four equal bonds (2.0 A). Fc-octahcdrons have regular shape, with all Fc-О bonds approximately equal.
M3 - статья
SP - 118
EP - 123
JO - ЗАПИСКИ РОССИЙСКОГО МИНЕРАЛОГИЧЕСКОГО ОБЩЕСТВА
JF - ЗАПИСКИ РОССИЙСКОГО МИНЕРАЛОГИЧЕСКОГО ОБЩЕСТВА
SN - 0869-6055
IS - 1
ER -
ID: 5069448