Fleisstalite

Fe2+(SO3) · 3H2O
IMA status
  • Approved
  • Pending publication
IMA symbol
Fss
IMA approved
2016
Also known as
  • Fleisstaliet
  • IMA2016-038

Where it forms, where it's found

Type locality
Margritzen (Mokritzen)
  1. Alter Pocher Inn outcrops
  2. Heiligenblut am Großglockner
  3. Spittal an der Drau District
  4. Carinthia
  5. Austria

47.0503°, 12.9011°

1recorded occurrences
Source · OpenStreetMap

Crystallography

Crystal system
Orthorhombic
Space group
Pnma
Cell parameters
a = 9.667(1) Å · b = 5.574(1) Å · c = 9.456(1) Å
Ratio a:b:c
1 : 0.577 : 0.978

Chemical composition

Constituent elements
Mass composition breakdown
ElementAtoms At. mass g/mol Mass g/molMass share
8OOxygenOxygen615.99995.994
50.54%
26FeIronIron155.84555.845
29.40%
16SSulfurSulfur132.06032.060
16.88%
1HHydrogenHydrogen61.0086.048
3.18%
Total189.947100.00%

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

From IMA formula

Synonyms

  • Fleisstaliet
  • IMA2016-038

In other languages

German
Fleisstalit · IMA 2016-038

Classification

Strunz
10th ed.

4.JE.05

  • 4OxidesClass
  • 4.JArsenites, antimonites, bismuthites, sulfites, selenites, tellurites; iodatesDivision
  • 4.JESulfitesGroup
  • 4.JE.05FleisstaliteSpecies

Group, growth & confusion

Commonly confused with
2 minerals

Literature, links & citation

Citations
  1. —Walter, F.; Bojar, H.-P. (2017): Fleisstalite, Fe2+(SO3)·3H2O, a new sulfite mineral species. Mitteilungen der Österreichischen Mineralogischen Gesellschaft, 163, 92 (abs.).
  2. 2016Hålenius, U., Hatert, F., Pasero, M., Mills, S. J. (2016) New minerals and nomenclature modifications approved in 2016, CNMNC Newsletter No. 33. Mineralogical Magazine, 80 (6) 1135-1144 doi:10.1180/minmag.2016.080.085DOI: 10.1180/minmag.2016.080.085
  3. 2022(2022) Fleisstalite. Handbook of Mineralogy. Mineralogical Society of America
Cite this entry
@misc{mineral2026,
  author    = {Mineral Index editorial board},
  title     = {Fleisstalite — Mineral Index},
  year      = {2026},
  url       = {https://mineralindex.org/minerals/fleisstalite-50336},
  note      = {Accessed 2026-05-11}
}