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Minasgeraisite-(Y): CaY2Be2Si2O10
Comments: SEM image of spherical aggregate of growth-zoned minasgeraisite crystals showing elongation along a and simple pedion termination. (AmMin, v71:603). Location: Lawa de Sr. Jose Pinto pegmatite body, Jaguaracu, Municipo de Timoteo, Minas Gerais, Brazil. Scale: Tick Marks 10 µm. © American Mineralogist