Crystallography Reports

, Volume 50, Issue 4, pp 539–543

Crystal structure of golyshevite

Authors

  • K. A. Rozenberg
    • Faculty of GeologyMoscow State University
  • R. K. Rastsvetaeva
    • Shubnikov Institute of CrystallographyRussian Academy of Sciences
  • N. V. Chukanov
    • Institute of Problems of Chemical Physics, Chernogolovka BranchRussian Academy of Sciences
  • I. A. Verin
    • Shubnikov Institute of CrystallographyRussian Academy of Sciences
Structure of Inorganic Compounds

DOI: 10.1134/1.1996727

Cite this article as:
Rozenberg, K.A., Rastsvetaeva, R.K., Chukanov, N.V. et al. Crystallogr. Rep. (2005) 50: 539. doi:10.1134/1.1996727

Abstract

The crystal structure of golyshevite, a new calcium-and carbon-rich representative of the eudialyte group, was established by single-crystal X-ray diffraction analysis (sp. gr. R3m, a = 14.231(3) Å, c = 29.984(8) Å, R = 0.062, 1643 reflections with F > 3σ(F)). The idealized formula of golyshevite is (Na10Ca3)Ca6Zr3Fe2SiNb[Si3O9]2[Si9O27]2(OH)3(CO3) · H2O. This mineral is characterized by the presence of calcium atoms both in the octahedral positions of six-membered rings and in extraframework positions, where calcium prevails. CO3 groups are present as the major additional anions. Carbon atoms randomly occupy two positions on the threefold z axis at a distance of 0.75 Å from each other and are coordinated by oxygen atoms arranged around the z axis.

Copyright information

© Pleiades Publishing, Inc. 2005