In a high-temperature contact metamorphic assemblage in a larnite-brownmillerite-mayenite rock, probably derived from fine-grained sediments.
Approved IMA 1977
In the Hatrurim Formation, Israel. The Hatrurim Formation is composed of a type of natural portland cement formed by high-temperature alteration of late Cretaceous to lower Eocene bitu
Link to MinDat.org Location Data.