Where it forms, where it's found
- Geological setting
In shock-metamorphosed melt veins in chondritic L-6 meteorites.
- Type locality
- Tenham meteorite
- Tenham Station
- Windorah
- Barcoo Shire
- Queensland
- Australia
-25.7333°, 142.9500°
13recorded occurrences
Physical
Crystallography
- Space group
- #80
- Cell parameters
- a = 4.78(5) Å · c = 13.6(1) Å
- Type-locality form
Granular to 0.4 µm or platy columnar to 1.4 µm.
Crystal structure
Chemical composition
Synonyms
- Akimotoiet
- Akimotoitt
- IMA1997-044
- UM1997-52-SiO:FeMg
In other languages
- French
- akimotoite
- German
- Akimotoit · IMA 1997-044
- Italian
- akimotoite
- Japanese
- 秋本石
- Chinese
- 硅铁镁石
- Arabic
- أكيموتويت
Classification
Strunz
10th ed.4.CB.05
- 4OxidesClass
- 4.CMetal: Oxygen = 2: 3,3: 5, and similarDivision
- 4.CBWith medium-sized cationsGroup
- 4.CB.05AkimotoiteSpecies
Group, growth & confusion
Literature, links & citation
Citations
- 1999Tomioka, Naotaka, Fujino, Kiyoshi (1999) Akimotoite, (Mg,Fe)SiO3, a new silicate mineral of the ilmenite group in the Tenham chondrite. American Mineralogist, 84 (3) 267-271 doi:10.2138/am-1999-0307DOI: 10.2138/am-1999-0307
- 2001Hirose, K., Komabayashi, T., Murakami, M., Funakoshi, K.I. (2001). In situ measurements of the majorite‐akimotoite‐perovskite phase transition boundaries in MgSiO3. Geophysical Research Letters: 28(23): 4351-4354.
- 2004Wentzcovitch, R.M., Stixrude, L., Karki, B.B., Kiefer, B. (2004) Akimotoite to perovskite phase transition in MgSiO3. Geophysical Research Letters: 31(10).
- 2007Miyajima, N., El Goresy, A., Dupas-Bruzek, C., Seifert, F., Rubie, D.C., Chen, M., Xie, X. (2007): Ferric iron in Al-bearing akimotoite coexisting with iron-nickel metal in a shock-melt vein in an L-6 chondrite. American Mineralogist, 92, 1545-1549.
- 2008Ferroir, T., Beck, P., Van de Moortèle, B., Bohn, M., Reynard, B., Simionovici, A., El Goresy, A., Gillet, P. (2008) Akimotoite in the Tenham meteorite: Crystal chemistry and high-pressure transformation mechanisms. Earth and Planetary Science Letters: 275(1-2): 26-31.
Cite this entry
@misc{mineral2026,
author = {Mineral Index editorial board},
title = {Akimotoite — Mineral Index},
year = {2026},
url = {https://mineralindex.org/minerals/akimotoite-6794},
note = {Accessed 2026-05-11}
}