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Sulfosalt mineral
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Structure of proustite Ag3AsS3, a classic sulfosalt, which can be viewed as the Ag+ salt of AsS3−3. Sulfosalts characteristically feature A–S–B linkages, where A and B are different metals or metalloids.

Sulfosalt minerals are sulfide minerals with the general formula AmBnXp, where

The Strunz classification includes the sulfosalts in a sulfides and sulfosalts superclass.[1] A group which have similar appearing formulas are the sulfarsenides (for example cobaltite (Co,Fe)AsS). In sulfarsenides the arsenic substitutes for sulfide anions whereas in the sulfosalts the arsenic substitutes for a metal cation.[2]

About 200 sulfosalt minerals are known. Examples include:[3]

Nickel–Strunz Classification -02- Sulfosalts

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IMA-CNMNC proposes a new hierarchical scheme (Mills et al., 2009). This list uses the Classification of Nickel–Strunz (mindat.org, 10 ed, pending publication).

  • Abbreviations:
    • "*" – discredited (IMA/CNMNC status).
    • "?" – questionable/doubtful (IMA/CNMNC status).
    • "REE" – Rare-earth element (Sc, Y, La, Ce, Pr, Nd, Pm, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, Lu)
    • "PGE" – Platinum-group element (Ru, Rh, Pd, Os, Ir, Pt)
    • 03.C Aluminofluorides, 06 Borates, 08 Vanadates (04.H V[5,6] Vanadates), 09 Silicates:
      • Neso: insular (from Greek νῆσος nēsos, island)
      • Soro: grouping (from Greek σωρός sōros, heap, mound (especially of corn))
      • Cyclo: ring (from Greek κύκλος kyklos, wheel, ring, round)
      • Ino: chain (from Greek ἴς [genitive: ἰνός inos], fibre)
      • Phyllo: sheet (from Greek φύλλον phyllon, leaf)
      • Tekto: three-dimensional framework (from Greek stem τεκτ- tekt- in words having to do with carpentry)
  • Nickel–Strunz code scheme: NN.XY.##x
    • NN: Nickel–Strunz mineral class number
    • X: Nickel–Strunz mineral division letter
    • Y: Nickel–Strunz mineral family letter
    • ##x: Nickel–Strunz mineral/group number, x add-on letter

Class: sulfosalts

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Synthetic sulfosalts

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Many sulfosalts can be prepared in the laboratory, including many that do not occur in nature.[4][which?]

References

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