Heptasartorite

Heptasartorite is a very rare mineral[2] with formula Tl7Pb22As55S108. It belongs to sartorite homologous series.[1] It is related to other recently approved minerals of the series: enneasartorite and hendekasartorite.[3][4] All three minerals come from a quarry in Lengenbach, Switzerland, which is famous of thallium minerals.[5] Chemically similar minerals include edenharterite and hutchinsonite.[6][7]

Heptasartorite
General
CategorySulfosalt
Formula
(repeating unit)		Tl7Pb22As55S108
Crystal systemMonoclinic
Crystal classPrismatic (2/m)
(same H-M symbol)
Space groupP21/c
Unit cella = 37.62, b = 7.88,
c = 20.07 [Å], β = 101.93° (approximated)
Identification
References[1][2]

References
  1. Topa, D., Stroeger, B., Makovicky, E., Berlepsch, P., and Stanley, C., 2015. Heptasartorite, IMA 2015-073. CNMNC Newsletter No. 28, December 2015, 1861; Mineralogical Magazine 79, 1859–1864
  2. "Heptasartorite: Heptasartorite mineral information and data". Mindat.org. Retrieved 2016-03-04.
  3. "Enneasartorite: Enneasartorite mineral information and data". Mindat.org. Retrieved 2016-03-10.
  4. "Hendekasartorite: Hendekasartorite mineral information and data". Mindat.org. Retrieved 2016-03-10.
  5. "Lengenbach Quarry, Fäld (Imfeld; Im Feld; Feld), Binn Valley, Wallis (Valais), Switzerland - Mindat.org". Mindat.org. Retrieved 2016-03-10.
  6. "Edenharterite: Edenharterite mineral information and data". Mindat.org. Retrieved 2016-03-10.
  7. "Hutchinsonite: Hutchinsonite mineral information and data". Mindat.org. Retrieved 2016-03-10.
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