is a trade name for a violet to purple variety of Scapolite (Marialite-Meionite Series)
from Tanzania. It was discovered in 1975, most likely
from Mpapwa District (Mpwampwa), Dodoma Region, Tanzania.
Origin of the name Petschite
is uncertain. It may possibly be named after Eckehard Julius
Petsch (1939- ), of Idar-Oberstein, Germany; a well
known gem dealer and noteworthy prospector in Madagascar
and Africa. He is
also the president of the gem cutting firm Julius Petsch
Jr. in Idar-Oberstein, Germany. The mineral Petschekite
is also named after Eckehard Petsch. Petschekite is
mineral species that was discovered in Mahajanga Province,
Madagascar in 1972.