Usually occurs in basaltic volcanics, metapyroxenite, also with augite in limburgite.
IMA Status:
Approved IMA 1998 (Dana # Added)
Locality:
Sasback in the Kaiserstuhl, Baden, Germany. Link to MinDat.org Location Data.
Name Origin:
Named after Barthelemy Faujas de Saint Fond (1741-1819), French geologist and writer on the origin of volcanoes. The Mg-dominant member of the faujasite series.