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Gerenite-(Y): (Ca,Na)2(Y,REE)3Si6O18·2(H2O)
Comments: BSE image of eutectoid intergrowth of quartz (black) and gerenite-(Y) (white). (CanMin, v36:793). Location: Strange Lake peralkaline complex, Quebec-Labrador boundary, Canada. Scale: Scale Bar 100 µm. © Canadian Mineralogist