The mineral berthierite has hitherto been known from two localities in the region of the Carpathian Mountains. It was first recorded by A. Löwe in 1847 from Aranyidka in the Hungarian comitat Abauj-Torna, where it occurred' massive and disseminated, columnar and fibrous, with jamesonite and stibnite'. Much later, about 1908, J. Krenner recognized it from Felsőbánya in the Hungarian comitat Szatmár but his paper describing it, which was read before the Hungarian Academy of Sciences on October 19, 1908, was not published until after his death.