| Calcioancylite-(Ce) (Ca, Sr)(Ce, La)3(CO3 )4 (OH)3 • H2 O c 2001-2005 Mineral Data Publishing, version...aggregates; may occur as zoned intergrowns with ancylite-(Ce). Physical Properties: Fracture: Splintery. Tenacity:...Cell Data: Space Group: [P m] [by analogy to calcioancylite-(Nd)]. c = n.d. β = n.d. Z = n.d. a = n.d...in alkaline igneous rocks (Mont Saint-Hilaire, Canada; Ilı́maussaq intrusion, Greenland; Kola Peninsula...and in leucite-bearing lamproite dikes (Baffin Island, Canada). Association: Potassic feldspar, natrolite |
