Результаты исследований: Научные публикации в периодических изданиях › статья › Рецензирование
Crystal chemistry of Na-bearing vesuvianite from fenitized gabbroids of the West Keivy (Kola Peninsula, Russia). / Panikorovskii, T. L.; Krivovichev, S. V.; Yakovenchuk, V. N.; Shilovskikh, V. V.; Mazur, A. S.
в: Zapiski Rossiiskogo Mineralogicheskogo Obshchestva, Том 145, № 5, 01.01.2016, стр. 83-95.Результаты исследований: Научные публикации в периодических изданиях › статья › Рецензирование
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TY - JOUR
T1 - Crystal chemistry of Na-bearing vesuvianite from fenitized gabbroids of the West Keivy (Kola Peninsula, Russia)
AU - Panikorovskii, T. L.
AU - Krivovichev, S. V.
AU - Yakovenchuk, V. N.
AU - Shilovskikh, V. V.
AU - Mazur, A. S.
PY - 2016/1/1
Y1 - 2016/1/1
N2 - Crystal chemistry of Na-bearing vesuvianite from fenitized gabbroid of the West Keivy (Kola Peninsula, Russia) has been studied by electron microprobe analysis, single crystal X-ray diffraction, infrared spectroscopy and 23 Na MAS NMR. The crystal structure has been refined in the P4/nnc space group [a = 15.5141(4), c = 11.7828(5) A, V= 2835.9(2) A 3 for sample 976, a = 15.5168(2), c = = 11.7700(4) A, V= 2833.9(1) A 3 for sample 50578] to R 1 = 0.036, and R 1 = 0.041, respectively. Amounts of Na 2 O in investigated samples 976 and 50578 (wt %) are 0.41 and 0.35, which correspond to 0.63 and 0.54 a.p.f.u. The bands in the IR spectrum are 415, 446, 490, 554, 578, 638, 800, 910, 987, 1020, 3200 (shoulder), 3452, 3564 and 3593 cm -1 . NMR spectrum of sodium consists of asymmetric quadrupolar lineshape doublet at -15.8 ppm, which in magnitude of the chemical shift corresponds to 8-9 coordinated Na. In the crystal structure of vesuvianite sodium is concentrated in the channel sites X1 and X4 mostly in the last of them.
AB - Crystal chemistry of Na-bearing vesuvianite from fenitized gabbroid of the West Keivy (Kola Peninsula, Russia) has been studied by electron microprobe analysis, single crystal X-ray diffraction, infrared spectroscopy and 23 Na MAS NMR. The crystal structure has been refined in the P4/nnc space group [a = 15.5141(4), c = 11.7828(5) A, V= 2835.9(2) A 3 for sample 976, a = 15.5168(2), c = = 11.7700(4) A, V= 2833.9(1) A 3 for sample 50578] to R 1 = 0.036, and R 1 = 0.041, respectively. Amounts of Na 2 O in investigated samples 976 and 50578 (wt %) are 0.41 and 0.35, which correspond to 0.63 and 0.54 a.p.f.u. The bands in the IR spectrum are 415, 446, 490, 554, 578, 638, 800, 910, 987, 1020, 3200 (shoulder), 3452, 3564 and 3593 cm -1 . NMR spectrum of sodium consists of asymmetric quadrupolar lineshape doublet at -15.8 ppm, which in magnitude of the chemical shift corresponds to 8-9 coordinated Na. In the crystal structure of vesuvianite sodium is concentrated in the channel sites X1 and X4 mostly in the last of them.
KW - Na MAS NMR
KW - Crystal structure
KW - Kola Peninsula
KW - Na-bearing vesuvianite
KW - Vesuvianite group
KW - West Keivy
UR - http://www.scopus.com/inward/record.url?scp=85018300264&partnerID=8YFLogxK
M3 - Article
AN - SCOPUS:85018300264
VL - 145
SP - 83
EP - 95
JO - ЗАПИСКИ РОССИЙСКОГО МИНЕРАЛОГИЧЕСКОГО ОБЩЕСТВА
JF - ЗАПИСКИ РОССИЙСКОГО МИНЕРАЛОГИЧЕСКОГО ОБЩЕСТВА
SN - 0869-6055
IS - 5
ER -
ID: 49249853