Vladkuzminite

K4CuZn3(AsO4)4
IMA status
  • Approved
  • Pending publication
IMA symbol
Vkz
Also known as
  • Vladkuzminiet

Where it forms, where it's found

Type locality
Arsenatnaya fumarole
  1. Second scoria cone
  2. Northern Breakthrough (North Breach)
  3. Great Fissure eruption (Main Fracture)
  4. Tolbachik Volcanic field
  5. Milkovsky District
  6. Kamchatka Krai
  7. Russia

55.6833°, 160.2333°

1recorded occurrences
Source · OpenStreetMap

Safety & handling

Crystallography

Crystal system
Monoclinic
Space group
#14
Cell parameters
a = 8.5920(7) Å · b = 8.9064(5) Å · c = 22.309(2) Å
Cell angles
β = 90.136(7) °
Ratio a:b:c
1 : 1.037 : 2.596
Comment

P21/n

Chemical composition

Constituent elements
Mass composition breakdown
ElementAtoms At. mass g/mol Mass g/molMass share
33AsArsenicArsenic474.922299.688
30.84%
8OOxygenOxygen1615.999255.984
26.34%
30ZnZincZinc365.380196.140
20.19%
19KPotassiumPotassium439.098156.392
16.09%
29CuCopperCopper163.54663.546
6.54%
Total971.750100.00%

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

From Mindat formula

Synonyms

  • Vladkuzminiet

In other languages

German
Vladkuzminit

Classification

Strunz
10th ed.

8.BA

  • 8Phosphates, Arsenates, VanadatesClass
  • 8.BPhosphates, etc., with additional anions, without H2ODivision
  • 8.BAWith small and medium-sized cationsGroup
  • 8.BAVladkuzminiteSpecies

Literature, links & citation

Citations
  1. Koshlyakova, N. N., Pekov, I. V., Agakhanov, A. A., Burns, P. C., Zubkova, N. V., Vigasina, M. F., Britvin, S. N., Hazen, R. M., and Zhitova, E. S.: Vladkuzminite, IMA 2023-106, in: CNMNC Newsletter 78, Eur. J. Mineral., 36, https://doi.org/10.5194/ejm-36-361-2024, 2024.
Cite this entry
@misc{mineral2026,
  author    = {Mineral Index editorial board},
  title     = {Vladkuzminite — Mineral Index},
  year      = {2026},
  url       = {https://mineralindex.org/minerals/vladkuzminite-471052},
  note      = {Accessed 2026-05-11}
}