Argentodufrénoysite

Ag3Pb26As35S80
IMA status
  • Approved
  • Pending publication
IMA symbol
Aduf
IMA approved
2016
Also known as
  • Argentodufrénoysiet
  • Argentodufrénoysitt
  • IMA2016-046

Where it forms, where it's found

Type locality
Lengenbach Quarry
  1. Fäld
  2. Binn
  3. Goms
  4. Valais
  5. Switzerland

46.3653°, 8.2205°

1recorded occurrences
Source · OpenStreetMap

Safety & handling

Crystallography

Crystal system
Triclinic
Space group
#2
Cell parameters
a = 7.877(3) Å · b = 8.418(3) Å · c = 49.439(19) Å
Cell angles
α = 89.338(7) ° · β = 90.012(7) ° · γ = 89.993(6) °
Ratio a:b:c
1 : 1.069 : 6.276

Chemical composition

Constituent elements
Mass composition breakdown
ElementAtoms At. mass g/mol Mass g/molMass share
82PbLeadLead26207.2005387.200
49.43%
33AsArsenicArsenic3574.9222622.270
24.06%
16SSulfurSulfur8032.0602564.800
23.54%
47AgSilverSilver3107.868323.604
2.97%
Total10897.874100.00%

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

From IMA formula

Synonyms

  • Argentodufrénoysiet
  • Argentodufrénoysitt
  • IMA2016-046

In other languages

German
Argentodufrénoysit · IMA 2016-046
Italian
Argentodufrénoysite

Classification

Strunz
10th ed.

2.HC.05d

  • 2Sulfides and SulfosaltsClass
  • 2.HSulfosalts of SnS archetypeDivision
  • 2.HCWith only PbGroup
  • 2.HC.05dArgentodufrénoysiteSpecies

Group, growth & confusion

In the same group
28 members

Literature, links & citation

Citations
  1. 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
  2. 2023(2023) Argentodufrénoysite. Handbook of Mineralogy. Mineralogical Society of America
Cite this entry
@misc{mineral2026,
  author    = {Mineral Index editorial board},
  title     = {Argentodufrénoysite — Mineral Index},
  year      = {2026},
  url       = {https://mineralindex.org/minerals/argentodufrenoysite-50344},
  note      = {Accessed 2026-05-11}
}