Xianhuaite-(La)

K2LaNb5O15
IMA status
  • Approved
  • Pending publication
IMA symbol
Xhu-La
Also known as
  • IMA2025-087

Where it forms, where it's found

Type locality
East Mine
  1. Bayan Obo deposit
  2. Bayan Obo mining district
  3. Baotou City
  4. Inner Mongolia
  5. China

41.8011°, 109.9817°

1recorded occurrences
Source · OpenStreetMap

Crystallography

Crystal system
Tetragonal
Space group
P4/mbm
Cell parameters
a = 12.5297(4) Å · c = 3.9249(2) Å

Chemical composition

Constituent elements
Mass composition breakdown
ElementAtoms At. mass g/mol Mass g/molMass share
41NbNiobiumNiobium592.906464.530
50.40%
8OOxygenOxygen1515.999239.985
26.04%
57LaLanthanumLanthanum1138.905138.905
15.07%
19KPotassiumPotassium239.09878.196
8.49%
Total921.616100.00%

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

From Mindat formula

Synonyms

  • IMA2025-087

In other languages

Catalan
Xianhuaïta- · xianhuaïta-(La)

Classification

Strunz
10th ed.

4.DL

  • 4OxidesClass
  • 4.DMetal: Oxygen = 1:2 and similarDivision
  • 4.DLWith large (+- medium-sized) cations; fluorite-type structuresGroup
  • 4.DLXianhuaite-(La)Species

Group, growth & confusion

Commonly confused with
1 mineral

Literature, links & citation

Citations
  1. — Yang, B., Xue, Y., Yu, J., Sun, N., Yang, L., Li, G., Yan, G., Liu, J., Zhao, Y, Meng, W., Chen, Z., Zhuang, L., Li, T., Wang, T., Zhao, L., Dong, Y., Yan, Z., Hou, X., Ao, X., Shen, M. and Liu, Z. (2026) Xianhuaite-(La), IMA 2025-087. CNMNC Newsletter 90, Mineralogical Magazine, 90, https://doi.org/10.1180/mgm.2026.10217
  2. 2026Asian Metal (2026) 29th new mineral at Bayan Obo deposit receives IMA approval. https://wap.asianmetal.com/news/viewNews.am?nId=2297982
Cite this entry

Entry last updated 

@misc{mineral2026,
  author    = {Mineral Index editorial board},
  title     = {Xianhuaite-(La) — Mineral Index},
  year      = {2026},
  url       = {https://mineralindex.org/minerals/xianhuaite-la-499606}
}