Ixiolite-(Fe2+)

(Ta2/3Fe2+1/3)O2
IMA status
  • Approved
IMA symbol
Ix-Fe2+
Also known as
  • Ixioliet-(Fe2+)
  • Ixiolith-(Fe2+)

Where it forms, where it's found

Type locality
Skogsböle (Skogböle)
  1. Kimitoön Island
  2. Kimitoön (Kemiönsaari)
  3. Southwest Finland
  4. Finland

60.1431°, 22.5997°

1recorded occurrences
Source · OpenStreetMap

Crystallography

Crystal system
Orthorhombic
Cell parameters
a = 4.785 Å · b = 5.758 Å · c = 5.160 Å
Ratio a:b:c
1 : 1.203 : 1.078
Morphology

a = 4.785 Å, b = 5.758 Å, c = 5.160 Å

Comment

Nickel et al. (1963) give space group Pcan (non-standard setting) and unit-cell parameters a = 5.731, b = 4.742, c = 5.152 Å. Grice et al. (1976) give space group Pbcn (non-standard setting) and the unit-cell parameters a = 4.785, b = 5.758, c = 5.160 Å (used above). Heating usually produces an ordered wodginite-type structure.

Crystal structure

Synonyms

  • Ixioliet-(Fe2+)
  • Ixiolith-(Fe2+)

Classification

Strunz
10th ed.

4.DB.25

  • 4OxidesClass
  • 4.DMetal: Oxygen = 1:2 and similarDivision
  • 4.DBWith medium-sized cations; chains of edge-sharing octahedraGroup
  • 4.DB.25Ixiolite-(Fe2+)Species

Group, growth & confusion

In the same group
7 members

Literature, links & citation

Citations
  1. 2022Miyawaki, Ritsuro, Hatert, Frédéric, Pasero, Marco, Mills, Stuart J. (2022) IMA Commission on New Minerals, Nomenclature and Classification (CNMNC) – Newsletter 68. European Journal of Mineralogy, 34 (5) 385-391 doi:10.5194/ejm-34-385-2022 DOI: 10.5194/ejm-34-385-2022
  2. 2024Kampf, A. R., Olds, T. A., Emproto, C., Ma, C., Marty, J. (2024) Amurselite, IMA 2024-062, in IMA Commission on New Minerals, Nomenclature and Classification (CNMNC) – Newsletter 82. European Journal of Mineralogy, 36 (6). 1005-1010 doi:10.5194/ejm-36-1005-2024DOI: 10.5194/ejm-36-1005-2024
Cite this entry
@misc{mineral2026,
  author    = {Mineral Index editorial board},
  title     = {Ixiolite-(Fe2+) — Mineral Index},
  year      = {2026},
  url       = {https://mineralindex.org/minerals/ixiolite-fe2-56147},
  note      = {Accessed 2026-05-11}
}