Ohtaniite

Mg3(Si0.50.5)Si2O8
IMA status
  • Approved
IMA symbol
Oht
Also known as
  • Ohtaniiet

Where it forms, where it's found

Geological setting

rare subhedral μm-sized grains in a shocked melt pocket of L6 chondrite meteorite

Type locality
Suizhou meteorite (Suizhou L6 chondrite)
  1. Xihe
  2. Zengdu District
  3. Suizhou
  4. Hubei
  5. China

31.6167°, 113.4667°

1recorded occurrences
Source · OpenStreetMap

Crystallography

Crystal system
Orthorhombic
Space group
Imma
Cell parameters
a = 5.5820(10) Å · b = 11.418(3) Å · c = 7.708(2) Å
Ratio a:b:c
1 : 2.046 : 1.381
Z
4
Type-locality form

rare subhedral μm-sized grains

Crystal structure

Synonyms

  • Ohtaniiet

In other languages

German
Ohtaniit

Classification

Strunz
10th ed.

9.BE.02

  • 9SilicatesClass
  • 9.BSorosilicatesDivision
  • 9.BESi2O7 groups, with additional anions; cations in octahedral [6] and greater coordinationGroup
  • 9.BE.02OhtaniiteSpecies

Group, growth & confusion

Commonly confused with
1 mineral

Literature, links & citation

Citations
  1. Bindi, L., Xie, Z., Sharp, T. G., and Xie, X.: Nannoniite, IMA 2024-010, in: CNMNC Newsletter 80, Eur. J. Mineral., 36, https://doi.org/10.5194/ejm-36-599-2024, 2024.
  2. 2024Bindi, Luca, Xie, Zhidong, Sharp, Thomas G, Xie, Xiande (2024) Unveiling deep Earth's hidden potential: insights from a new high-pressure phase discovered in a shocked meteorite. Discover Minerals, 1 (1). 1
Cite this entry
@misc{mineral2026,
  author    = {Mineral Index editorial board},
  title     = {Ohtaniite — Mineral Index},
  year      = {2026},
  url       = {https://mineralindex.org/minerals/ohtaniite-471230},
  note      = {Accessed 2026-05-11}
}