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Unnamed (Fe Sulphate Hydroxide)

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Formula:
Fe(SO4)(OH)
Anhydrous counterpart of butlerite; occur intimately intermixed with mainly butlerite and hydroniumjarosite, with minor coquimbite, rhomboclase, hematite, and gypsum, within powdery to earthy/compact aggregates forming pods and a veinlet. Formed likely due to natural dehydration of butlerite triggered by coal fire.

Known from Mars (Bishop et al., 2025).


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Unique IdentifiersHide

Mindat ID:
47724
Long-form identifier:
mindat:1:1:47724:4

Chemistry of Unnamed (Fe Sulphate Hydroxide)Hide

Mindat Formula:
Fe(SO4)(OH)
Element Weights:
Element% weight
O47.359 %
Fe33.061 %
S18.983 %
H0.597 %

Calculated from ideal end-member formula.
Elements listed:
Fe, H, O, S - search for minerals with similar chemistry

Common AssociatesHide

Associations Based on Photo Data:
1 photo of Unnamed (Fe Sulphate Hydroxide) associated with ButleriteFe3+(SO4)(OH) · 2H2O
1 photo of Unnamed (Fe Sulphate Hydroxide) associated with Hydroniumjarosite(H3O)Fe3+3(SO4)2(OH)6
1 photo of Unnamed (Fe Sulphate Hydroxide) associated with Rhomboclase(H5O2)Fe3+(SO4)2 · 2H2O
1 photo of Unnamed (Fe Sulphate Hydroxide) associated with CoquimbiteAlFe3(SO4)6(H2O)12 · 6H2O
1 photo of Unnamed (Fe Sulphate Hydroxide) associated with HematiteFe2O3
1 photo of Unnamed (Fe Sulphate Hydroxide) associated with GypsumCaSO4 · 2H2O

Other InformationHide

Health Risks:
No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.

Internet Links for Unnamed (Fe Sulphate Hydroxide)Hide

References for Unnamed (Fe Sulphate Hydroxide)Hide

Reference List:
Johansson, Georg, Yhland, Margareta, Dahlbom, Richard, Sjövall, J., Theander, Olof, Flood, H. (1962) On the Crystal Structures of FeOHSO4 and InOHSO4. Acta Chemica Scandinavica, 16. 1234-1244 doi:10.3891/acta.chem.scand.16-1234
Rumbold, B.D., Wilson, G.V.H. (1974) Linear chain antiferromagnetism in FeOHSO4. Journal of Physics and Chemistry of Solids, 35. 241-248 doi:10.1016/0022-3697(74)90040-7
Scheerlinck, D., Legrand, E. (1977) Neutron diffraction study of the magnetic structure of the basic iron sulphate FeOHSO4. Physica B+C, 86. 913-915 doi:10.1016/0378-4363(77)90739-2
Ventruti, G. (2005) The order-disorder character of FeOHSO4 obtained from the thermal decomposition of metahohmannite, Fe3+2(H2O)4[O(SO4)2]. American Mineralogist, 90 (4) 679-686 doi:10.2138/am.2005.1739
Kruszewski, Łukasz (2013) Supergene sulphate minerals from the burning coal mining dumps in the Upper Silesian Coal Basin, South Poland. International Journal of Coal Geology, 105. 91-109 doi:10.1016/j.coal.2012.12.007
Gomez, Mario A.; Ventruti, G.; Celikin, M.; Assaaoudi, H.; Putz, H.; Becze, L.; Lee, K. E.; Demopoulos, G. P. (2013) The nature of synthetic basic ferric arsenate sulfate (Fe(AsO4)1−x(SO4)x(OH)x) and basic ferric sulfate (FeOHSO4): their crystallographic, molecular and electronic structure with applications in the environment and energy. RSC Advances, 3 (37). 16840 doi:10.1039/c3ra42235f
Ventruti, Gennaro; Della Ventura, Giancarlo; Gomez, Mario Alberto; Capitani, Giancarlo; Sbroscia, Marco; Sodo, Armida (2020) High-temperature study of basic ferric sulfate, FeOHSO4. Physics and Chemistry of Minerals, 47 (10). 43 doi:10.1007/s00269-020-01113-7
Avdeev, Maxim, Singh, Shashwat, Barpanda, Prabeer, Ling, Chris D. (2021) Crystal and Magnetic Structures of Monoclinic FeOHSO4. Inorganic Chemistry, 60 (20) 15128-15130 doi:10.1021/acs.inorgchem.1c02544
Bishop, J. L.; Meusburger, J. M.; Weitz, C. M.; Parente, M.; Gross, C.; Talla, D.; Saranathan, A. M.; Itoh, Y.; Gruendler, M. R. D.; Howells, A. E. G.; et al. (2025) Characterization of ferric hydroxysulfate on Mars and implications of the geochemical environment supporting its formation. Nature Communications, 16 (1). doi:10.1038/s41467-025-61801-2

Localities for Unnamed (Fe Sulphate Hydroxide)Hide

Showing 1 localities.

This map shows a selection of localities that have latitude and longitude coordinates recorded. Click on the symbol to view information about a locality. The symbol next to localities in the list can be used to jump to that position on the map.
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Locality ListHide

- This locality has map coordinates listed. - This locality has estimated coordinates. ⓘ - Click for references and further information on this occurrence. ? - Indicates mineral may be doubtful at this locality. - Good crystals or important locality for species. - World class for species or very significant. (TL) - Type Locality for a valid mineral species. (FRL) - First Recorded Locality for everything else (eg varieties). Struck out - Mineral was erroneously reported from this locality. Faded * - Never found at this locality but inferred to have existed at some point in the past (e.g. from pseudomorphs).

All localities listed without proper references should be considered as questionable.
Poland
 
  • Silesian Voivodeship
    • Rybnik County
      • Gmina Czerwionka-Leszczyny
Kruszewski (2013)
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