Результаты исследований: Научные публикации в периодических изданиях › статья › Рецензирование
The crystal structure of tetraferriphlogopite and tetraferribiotite. / Semenova, T. F.; Rozhdestvenskaya, I. V.; Frank-Kamenetsky, V. A.; Pavlishin, V. I.
в: Mineralogicheskii Zhurnal, Том 5, № 1, 01.01.1983, стр. 41-49.Результаты исследований: Научные публикации в периодических изданиях › статья › Рецензирование
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TY - JOUR
T1 - The crystal structure of tetraferriphlogopite and tetraferribiotite.
AU - Semenova, T. F.
AU - Rozhdestvenskaya, I. V.
AU - Frank-Kamenetsky, V. A.
AU - Pavlishin, V. I.
PY - 1983/1/1
Y1 - 1983/1/1
N2 - The structures of natural intermediate tetraferriphlogopite from the Kovdor iron-ore deposit and tetraferribiotite from the Krivoi Rog Basin (both in the Ukrainian Shield) have been refined. A three-dimensional set of intensities has been obtained using an automatic single-crystal diffractometer. The structure of intermediate tetraferriphlogopite has been refined to R 0.059, from 1059 observed reflections, and that of tetraferribiotite to R 0.079, from 534 reflections. The average bond lengths in intermediate tetraferriphlogopite are: T-O 0.1665, M1-O,OH = M2- O,OH 0.2085, and inner K-O 0.2973 nm; the angle of rotation of the tetrahedra alpha = 9.24o. In tetraferribiotite, T-O 0.1679, M1-O,OH 0.2111, M2-O,OH 0.2098, K-O 0.2974 nm and alpha 8.96o. In both structures, the OH group is situated along the c* axis; the bond length in the two minerals is 0.0792 and 0.0887 nm. The pattern of distortions in the tetraferribiotite structure is analogous to that identified in phlogopite.-D.A.B.
AB - The structures of natural intermediate tetraferriphlogopite from the Kovdor iron-ore deposit and tetraferribiotite from the Krivoi Rog Basin (both in the Ukrainian Shield) have been refined. A three-dimensional set of intensities has been obtained using an automatic single-crystal diffractometer. The structure of intermediate tetraferriphlogopite has been refined to R 0.059, from 1059 observed reflections, and that of tetraferribiotite to R 0.079, from 534 reflections. The average bond lengths in intermediate tetraferriphlogopite are: T-O 0.1665, M1-O,OH = M2- O,OH 0.2085, and inner K-O 0.2973 nm; the angle of rotation of the tetrahedra alpha = 9.24o. In tetraferribiotite, T-O 0.1679, M1-O,OH 0.2111, M2-O,OH 0.2098, K-O 0.2974 nm and alpha 8.96o. In both structures, the OH group is situated along the c* axis; the bond length in the two minerals is 0.0792 and 0.0887 nm. The pattern of distortions in the tetraferribiotite structure is analogous to that identified in phlogopite.-D.A.B.
UR - http://www.scopus.com/inward/record.url?scp=0021034432&partnerID=8YFLogxK
M3 - статья
AN - SCOPUS:0021034432
VL - 5
SP - 41
EP - 49
JO - МИНЕРАЛОГИЧЕСКИЙ ЖУРНАЛ
JF - МИНЕРАЛОГИЧЕСКИЙ ЖУРНАЛ
SN - 0204-3548
IS - 1
ER -
ID: 50027137