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Unnamed (Fe Pyrosulphite)

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Formula:
~Fe(S4+,As)2O5
Another example of intermediate-valence S-compound of a carbonate-hosted banded Zn-Pb sulphide deposit (Orzeł Biały mine, Upper Silesia, Poland). It has some Pb in composition. The above compounds include subsulphites (Unnamed (Fe Subsulphite)), sulphites (Unnamed (Fe Sulphite), Unnamed (Zn Sulphite)), pyrosulphites and thiosulphates ('UM1995-34-SO:Fe', Unnamed (Fe Thiosulphate II), Unnamed (Pb Thiosulphate)). There is also a Fe-Pb phase ('UM1995-35-SO:FePb'). These compounds are generally banded/radial/fibrous/spherulitic in form and have lowered reflectivity with growing sulphur valence. They are precursors for banded ore sulfides. Compare also Unnamed (Fe Oxysulphide).

The pyrosulphite occurs as banded matrix interdigitated with galena and pyrite. Oxygen excess in the compound is balanced by the presence of silica admixture.

The composition is unique and this is likely the only example of a pyrosulphite mineral currently known.

Compare also albertiniite (a sulphite).


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Unique IdentifiersHide

Mindat ID:
47498
Long-form identifier:
mindat:1:1:47498:2

Chemistry of Unnamed (Fe Pyrosulphite)Hide

Mindat Formula:
~Fe(S4+,As)2O5
Element Weights:
Element% weight
O40.004 %
S32.070 %
Fe27.926 %

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

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 Pyrosulphite)Hide

References for Unnamed (Fe Pyrosulphite)Hide

Localities for Unnamed (Fe Pyrosulphite)Hide

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.

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
    • Piekary Śląskie
      • Brzeziny Śląskie
Kucha et al. (1993)
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