Vakhrushevaite

Mg5Cr(AlSi3O10)(OH)8
IMA status
  • Approved
  • Pending publication
IMA symbol
Vkr
IMA approved
2025
Also known as
  • IMA2025-024
  • Vakhrushevaiet

Where it forms, where it's found

Type locality
Vakhrushevaite type locality
  1. Saranovskii Mine
  2. Sarany
  3. Gornozavodskii District
  4. Perm Krai
  5. Russia

58.5000°, 58.8667°

1recorded occurrences
Source · OpenStreetMap

Crystallography

Crystal system
Triclinic
Cell parameters
a = 5.3375(3) Å · b = 9.2455(6) Å · c = 14.3313(5) Å
Cell angles
α = 90.237(4) ° · β = 97.123(6) ° · γ = 88.978(4) °
Ratio a:b:c
1 : 1.732 : 2.685
Comment

space group: C-1

Chemical composition

Constituent elements
Mass composition breakdown
ElementAtoms At. mass g/mol Mass g/molMass share
8OOxygenOxygen1815.999287.982
49.58%
12MgMagnesiumMagnesium524.305121.525
20.92%
14SiSiliconSilicon328.08584.255
14.51%
24CrChromiumChromium151.99651.996
8.95%
13AlAluminiumAluminium126.98226.982
4.65%
1HHydrogenHydrogen81.0088.064
1.39%
Total580.804100.00%

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

From Mindat formula

Synonyms

  • IMA2025-024
  • Vakhrushevaiet

In other languages

German
IMA 2025-024 · Vakhrushevait

Classification

Strunz
10th ed.

9.EC.55

  • 9SilicatesClass
  • 9.EPhyllosilicatesDivision
  • 9.ECPhyllosilicates with mica sheets, composed of tetrahedral and octahedral netsGroup
  • 9.EC.55VakhrushevaiteSpecies

Group, growth & confusion

In the same group
12 members

Literature, links & citation

Citations
  1. —Pekov, I.V., Erokhin, Y.V., Krzhizhanovskaya, M.G., Tapaskurt, V.O., Chukanov, N.V., Belakovskiy, D.I., Britvin, S.N. and Shiryaev, P.B. (2025) Vakhrushevaite, IMA 2025-024. CNMNC Newsletter 86, Mineralogical Magazine, 89
  2. 1980Phillips, T L., Loveless, Janet K, Bailey, S. W. (1980) Cr3+ coordination in chlorites: a structural study of ten chromian chlorites. American Mineralogist, 65 (1-2) 112-122
Cite this entry
@misc{mineral2026,
  author    = {Mineral Index editorial board},
  title     = {Vakhrushevaite — Mineral Index},
  year      = {2026},
  url       = {https://mineralindex.org/minerals/vakhrushevaite-488785},
  note      = {Accessed 2026-05-11}
}