Xuite

Ca3Fe2[AlO3(OH)]3
IMA status
  • Approved
IMA symbol
Xu
IMA approved
2020
Also known as
  • IMA2018-135a
  • Xuiet

Where it forms, where it's found

Geological setting

Basaltic scoria. Oxidation of Fe-bearing pyroclasts at high temperatures.

Type locality
Menan volcanic complex
  1. Rexburg area
  2. Madison County
  3. Idaho
  4. USA

43.7842°, -111.9731°

1recorded occurrences
Source · OpenStreetMap

Crystallography

Crystal system
Isometric
Cell parameters
a = 12.5056(5) Å
Z
8
Type-locality form

Crystals from 200-800 nm.

Comment

Spacegroup Ia-3d

Crystal structure

Chemical composition

Constituent elements
Mass composition breakdown
ElementAtoms At. mass g/mol Mass g/molMass share
8OOxygenOxygen1215.999191.988
37.80%
20CaCalciumCalcium340.078120.234
23.67%
26FeIronIron255.845111.690
21.99%
13AlAluminiumAluminium326.98280.946
15.94%
1HHydrogenHydrogen31.0083.024
0.60%
Total507.882100.00%

Mass share = atoms × atomic mass ÷ molar mass × 100

From IMA formula

Synonyms

  • IMA2018-135a
  • Xuiet

In other languages

German
IMA 2018-135a · Xuit

Classification

Strunz
10th ed.

4.CC

  • 4OxidesClass
  • 4.CMetal: Oxygen = 2: 3,3: 5, and similarDivision
  • 4.CCWith large and medium-sized cationsGroup
  • 4.CCXuiteSpecies

Group, growth & confusion

Literature, links & citation

Citations
  1. 2021Miyawaki, Ritsuro, Hatert, Frédéric, Pasero, Marco, Mills, Stuart J. (2021) IMA Commission on New Minerals, Nomenclature and Classification (CNMNC) – Newsletter 59. European Journal of Mineralogy, 33 (1) 139-143 doi:10.5194/ejm-33-139-2021 DOI: 10.5194/ejm-33-139-2021
  2. 2022(2022) Xuite. Handbook of Mineralogy. Mineralogical Society of America
  3. 2022Lee, Seungyeol; Guo, Xiaofeng (2022) Xuite, Ca3Fe2[(Al,Fe)O3(OH)]3, a new mineral of the garnet group: Implications for the wide occurrence of nanominerals. American Mineralogist, 107 (5). 930-935 doi:10.2138/am-2022-8023DOI: 10.2138/am-2022-8023
Cite this entry
@misc{mineral2026,
  author    = {Mineral Index editorial board},
  title     = {Xuite — Mineral Index},
  year      = {2026},
  url       = {https://mineralindex.org/minerals/xuite-55307},
  note      = {Accessed 2026-05-11}
}