Giuşcăite

Ag2Tl4Pb4As20Sb2S40
IMA status
  • Approved
  • Pending publication
IMA symbol
Gic
IMA approved
2024
Also known as
  • Giuşcăiet

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
Monoclinic
Cell parameters
a = 8.545(3) Å · b = 8.207(3) Å · c = 24.768(8) Å
Cell angles
β = 99.625(3) °
Ratio a:b:c
1 : 0.960 : 2.899
Comment

Space group Pn

Chemical composition

Constituent elements
Mass composition breakdown
ElementAtoms At. mass g/mol Mass g/molMass share
33AsArsenicArsenic2074.9221498.440
30.67%
16SSulfurSulfur4032.0601282.400
26.24%
82PbLeadLead4207.200828.800
16.96%
81TlThalliumThallium4204.380817.520
16.73%
51SbAntimonyAntimony2121.760243.520
4.98%
47AgSilverSilver2107.868215.736
4.42%
Total4886.416100.00%

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

From Mindat formula

Synonyms

  • Giuşcăiet

In other languages

German
Giuşcăit

Classification

Strunz
10th ed.

2.HD

  • 2Sulfides and SulfosaltsClass
  • 2.HSulfosalts of SnS archetypeDivision
  • 2.HDWith TlGroup
  • 2.HDGiuşcăiteSpecies

Group, growth & confusion

In the same group
28 members

Literature, links & citation

Citations
  1. 2024Bosi, Ferdinando, Hatert, Frédéric, Pasero, Marco, Mills, Stuart J. (2024) IMA Commission on New Minerals, Nomenclature and Classification (CNMNC) – Newsletter 77. European Journal of Mineralogy, 36 (1). 165-172 doi:10.5194/ejm-36-165-2024DOI: 10.5194/ejm-36-165-2024
Cite this entry
@misc{mineral2026,
  author    = {Mineral Index editorial board},
  title     = {Giuşcăite — Mineral Index},
  year      = {2026},
  url       = {https://mineralindex.org/minerals/giuscaite-470987},
  note      = {Accessed 2026-05-11}
}