What is "hendekasartorite"

Hendekasartorite is a very rare thallium sulfosalt mineral with formula TlPbAsS. It is one of recently approved new members of sartorite homologous series, by enneasartorite and heptasartorite. All new members come from Lengenbach quarry in Switzerland, prolific in terms of thallium sulfosalt minerals. Hendekasartorite is chemically similar to edenharterite and hutchinsonite.