Catapleiite is a dimorph of gaidonnayite rarely found by itself. Its name derives from the Greek words "κατα" and "πλειον" meaning "with more" as it is mostly accompanied by a number of rare minerals.
Catapleiite.Locality: Poudrette quarry (Demix quarry; Uni-Mix quarry; Desourdy quarry; Carrière Mont Saint-Hilaire), Mont Saint-Hilaire, La Vallée-du-Richelieu RCM, Montérégie, Québec, Canada
Pink eudialyte in syenite (lujavrite) from Poços de Caldas, Brazil. The white mineral is alkali feldspar, the black is aegirine, and the little brown bits are biotite.