Found in a fluorapatite segregation in a quartz mass roughly 10 cm thick and 3 m long in granulite-facies paragneiss. Mg-dominant analogue of sarcopside.
IMA Status:
Approved IMA 2006 (Dana # Added)
Locality:
Brattnevet Peninsula, Larsemann Hills, Prydz Bay, East Antarctica. Link to MinDat.org Location Data.
Name Origin:
Named for Christian Chopin, research director at Centre national de la recherche scientifique (CNRS).