Strandite

Pb3Mn3+4Mn4+3O15
IMA status
  • Approved
  • Pending publication
IMA symbol
Strn
IMA approved
2026
Also known as
  • IMA2025-080
  • Strandiet

Where it forms, where it's found

Type locality
Långban Mine
  1. Långban Ore District
  2. Filipstad
  3. Värmland County
  4. Sweden

59.8554°, 14.2648°

1recorded occurrences
Source · OpenStreetMap

Safety & handling

Crystallography

Crystal system
Hexagonal
Space group
P63/mcm
Cell parameters
a = 10.0488(5) Å · c = 13.677(1) Å

Chemical composition

Constituent elements
Mass composition breakdown
ElementAtoms At. mass g/mol Mass g/molMass share
82PbLeadLead3207.200621.600
49.88%
25MnManganeseManganese754.938384.566
30.86%
8OOxygenOxygen1515.999239.985
19.26%
Total1246.151100.00%

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

From Mindat formula

Synonyms

  • IMA2025-080
  • Strandiet

In other languages

Catalan
strandita

Classification

Strunz
10th ed.

4.CC

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

Literature, links & citation

Citations
  1. Karlsson, A., Holtstam, D., Bindi, L. and Buczko, D. (2026) Strandite, IMA 2025-080. CNMNC Newsletter 89, Mineralogical Magazine, 90, https://doi.org/10.1180/mgm.2026.10199
Cite this entry
@misc{mineral2026,
  author    = {Mineral Index editorial board},
  title     = {Strandite — Mineral Index},
  year      = {2026},
  url       = {https://mineralindex.org/minerals/strandite-499368},
  note      = {Accessed 2026-05-11}
}