Published September 2003 | Version v1
Journal article

Ikranite: Composition and structure of a new mineral of the eudialyte group

  • 1. Shubnikov Institute of Crystallography, Russian Academy of Sciences, Leninskii pr. 59, Moscow, 119333 (Russian Federation)
  • 2. Institute of Problems of Chemical Physics in Chernogolovka, Russian Academy of Sciences, Chernogolovka, Moscow oblast, 142432 (Russian Federation)

Description

The crystal structure of a new mineral, ikranite, of the eudialyte group discovered in the Lovozero massif (the Kola Peninsula) was established by X-ray diffraction analysis. The crystals belong to the trigonal system and have the unit-cell parameters a = 14.167(2) A, c = 30.081(2) A, V = 5228.5 A3 , sp. gr. R3m. Ikranite is the first purely ring mineral of the eudialyte group (other minerals of this group contain ring platforms of either tetrahedral or mixed types). It is also the first representative of the eudialyte group where Fe3+ prevail over Fe2+ ions

Additional details

Identifiers

Publishing Information

Journal Title
Crystallography Reports
Journal Volume
48
Journal Issue
5
Journal Page Range
p. 717-720
ISSN
1063-7745
CODEN
CYSTE3

Optional Information

Notes
Translated from Kristallografiya, ISSN 0023-4761, 48, 775-778 (No. 5, 2003); (c) 2003 MAIK ''Nauka / Interperiodica''.