Mushistonite

Cu2+Sn4+(OH)6
IMA status
  • Approved
IMA symbol
Mhi
Discovered
1982
IMA approved
1982
Also known as
  • IMA1982-068
  • Mushistoniet

Where it forms, where it's found

Geological setting

Oxidized zone of a tin deposit.

Type locality
Mushiston Deposit
  1. Kaznok Valley
  2. Pendzhikent District
  3. Zeravshan Range
  4. Sughd
  5. Tajikistan

39.3100°, 67.9717°

8recorded occurrences
Source · OpenStreetMap

Physical

Hardness
123456789104 – 4.5/ 10 MOHS
  1. 1Talc
  2. 2Gypsum
  3. 3Calcite
  4. 4Fluorite
  5. 5Apatite
  6. 6Orthoclase
  7. 7Quartz
  8. 8Topaz
  9. 9Corundum
  10. 10Diamond
Transparency
Transparent
Colour
Brownish green to malachite-green · yellow-brown

Optical

Optical type
Isotropic
Optical colour
Gray
Tropism
Isotropic

Crystallography

Crystal system
Orthorhombic
Space group
#74
Cell parameters
a = 7.5918(3) Å · b = 7.5915(3) Å · c = 8.0965(1) Å
Ratio a:b:c
1 : 1.000 : 1.066
Unit cell volume
466.63 ų
Type-locality form

In fine-grained earthy aggregates.

Comment

Room temperature data (300 K) for synthetic material (Kulbakov et al., 2025). At 6 K, the cell is: a = 7. 5764(1) Å, b = 7. 5740(1) Å, c = 8. 0691(1) Å, V = 463.04(1) Å3. Pseudotetragonal. Formerly thought to be tetragonal, space group P42/nnm, a = b = 7.586 Å and c = 8.103 Å. In natural samples with high Zn and Fe concentrations, the crystal symmetry becomes cubic (space group Pn3m).

Crystal structure

Chemical composition

Constituent elements
Mass composition breakdown
ElementAtoms At. mass g/mol Mass g/molMass share
50SnTinTin1118.710118.710
41.76%
8OOxygenOxygen615.99995.994
33.76%
29CuCopperCopper163.54663.546
22.35%
1HHydrogenHydrogen61.0086.048
2.13%
Total284.298100.00%

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

From IMA formula

Synonyms

  • IMA1982-068
  • Mushistoniet

In other languages

German
IMA 1982-068 · Mushistonit
Spanish
Mushistonita
Italian
Mushistonite

Classification

Strunz
10th ed.

4.FC.10

  • 4OxidesClass
  • 4.FHydroxides (without V or U)Division
  • 4.FCHydroxides with OH, without H2O; corner-sharing octahedraGroup
  • 4.FC.10MushistoniteSpecies
Dana
8th ed.

06.03.06.06

  • 06Hydroxides and Oxides Containing HydroxylClass
  • 06.03X(OH)3Type
  • 06.03.06Wickmanite group (Cubic or Trigonal, 2+ cations containing Sn)Group
  • 06.03.06.06MushistoniteSpecies
CIM

7.11.11

  • 7Oxides and HydroxidesClass
  • 7.11Oxides of Sn and PbGroup
  • 7.11.11MushistoniteSpecies

Group, growth & confusion

In the same group
6 members

Literature, links & citation

Citations
  1. 1976Morgenstern-Badarau, Irène (1976) Effet Jahn-Teller et structure cristalline de l'hydroxyde CuSn(OH)6. Journal of Solid State Chemistry, 17. 399-406 doi:10.1016/s0022-4596(76)80010-2DOI: 10.1016/s0022-4596(76)80010-2
  2. 1984Marshukova, N.K., Pavlovskii, A.B., Sidorenko, G.A. (1984) Mushistonite, (Cu,Zn,Fe)Sn(OH)6, a new tin mineral. Zapiski Vsesoyuznogo Mineralogicheskogo Obshchestva: 113(5): 612-617.
  3. 1985Dunn, Pete J., Ferraiolo, James A., Fleischer, Michael, Gobel, Volker, Grice, Joel D., Langley, Richard H., Shigley, James E., Vanko, David A., Zilczer, Janet A. (1985) New mineral names. American Mineralogist, 70 (11-12) 1329-1335
  4. 1986Roberts, Willard L., Dunn, Pete J. (1986) Cuprocassiterite Discredited as Mushistonite; And an Unnamed Tin Mineral from the Etta Mine [South Dakota]. The Mineralogical Record, 17 (6) 383
  5. 2005(2005) Mushistonite. Handbook of Mineralogy. Mineralogical Society of America
Cite this entry
@misc{mineral2026,
  author    = {Mineral Index editorial board},
  title     = {Mushistonite — Mineral Index},
  year      = {2026},
  url       = {https://mineralindex.org/minerals/mushistonite-2817},
  note      = {Accessed 2026-05-11}
}