Articles | Volume 34, issue 5
https://doi.org/10.5194/ejm-34-425-2022
https://doi.org/10.5194/ejm-34-425-2022
Research article
 | 
07 Oct 2022
Research article |  | 07 Oct 2022

Ferro-ferri-holmquistite, Li2(Fe2+3Fe3+2)Si8O22(OH)2, Fe2+Fe3+ analogue of holmquistite, from the Iwagi islet, Ehime, Japan

Mariko Nagashima, Teruyoshi Imaoka, Takashi Kano, Jun-ichi Kimura, Qing Chang, and Takashi Matsumoto

Viewed

Total article views: 848 (including HTML, PDF, and XML)
HTML PDF XML Total BibTeX EndNote
600 219 29 848 16 19
  • HTML: 600
  • PDF: 219
  • XML: 29
  • Total: 848
  • BibTeX: 16
  • EndNote: 19
Views and downloads (calculated since 07 Oct 2022)
Cumulative views and downloads (calculated since 07 Oct 2022)

Viewed (geographical distribution)

Total article views: 820 (including HTML, PDF, and XML) Thereof 820 with geography defined and 0 with unknown origin.
Country # Views %
  • 1
1
 
 
 
 

Cited

Latest update: 12 Nov 2024
Download
Short summary
Ferro-ferri-holmquistite (IMA2022-020), ideal formula ☐Li2(Fe32+Fe23+)Si8O22(OH)2, was found in albitized granite from the Iwagi islet, Ehime, Japan. It is a Fe2+Fe3+ analogue of holmquistite and belongs to the lithium subgroup amphiboles. Ferro-ferri-holmquistite occurs as blue acicular crystals typically replacing the biotite and is the product of metasomatic mineral replacement reactions by dissolution–reprecipitation processes associated with Na- and Li-rich hydrothermal fluids.