AM_Gadolinite-(Y)
Formula: Y1.3 Nd.14 Dy.112 Sm.084 Gd.084 Ce.08 Er.042 Fe.864 Si2 Be2 O10
Name: Gadolinite-(Y)
Unit cell: 10.0 7.565 4.768 90.0 90.31 90.0 , V=360.69
Space group: P121/A1 (14)

Miyawaki R , Nakai I , Nagashima K , American Mineralogist , 69 (1984) p.948-953, A refinement of the crystal structure of gadolinite