Short-range order in Li–Al tourmalines: IR spectroscopy, X-ray single crystal diffraction analysis and a bond valence theory approach

Результат исследований: Научные публикации в периодических изданияхстатья

Аннотация

The short-range order in Li–Al–(OH, F) tourmalines with Y[Li/Al] ≈ 1 and different Na/Ca ratio was investigated by means of bond valence theory, experimental IR spectroscopic data and the results of X-ray single crystal diffraction. The stability of the arrangements coordinating W- and V-crystallographic sites occupied by OH, F and O2− ions was refined. A unified model of assignment of absorption bands in the IR spectra to the local arrangements (clusters) was suggested taking into account the first and the second OHcoordination spheres. The types of local cation arrangements around the W- and V-anion sites, alongside with clusters ratio and their distribution were brought out. The short-range order in Li–Al tourmalines controlled not only by local restrictions of the bond valence theory, but also by the long-range order was described.

Язык оригиналаанглийский
Страницы (с-по)815-825
Число страниц11
ЖурналPhysics and Chemistry of Minerals
Том46
Номер выпуска9
Ранняя дата в режиме онлайн12 июн 2019
DOI
СостояниеОпубликовано - 1 окт 2019

Предметные области Scopus

  • Материаловедение (все)
  • Геохимия и петрология

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