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Samarskite-(Y): (Y,Fe+++,U)(Nb,Ta)5O4
Comments: A small but intricate cluster of fairly sharp samarskite-(Y) crystals (overall dimensions 15 by 15 by 22 mm) dug from the floor of the open cut. Location: Spinelli Quarry (Spinelli prospect), South Glastonbury, Glastonbury, Hartford Co., Connecticut, USA. Scale: See Image. © Fred Davis