AM_Keiviite-(Yb)
Formula: Yb2 Si2 O7
Name: Keiviite-(Yb)
Unit cell: 6.802 8.875 4.703 90.0 102.12 90.0 , V=277.58
Space group: C12/M1 (12)

Smolin Y I , Shepelev Y F , Acta Crystallographica, Section B , 26 (1970) p.484-492, The crystal structures of the rare earth pyrosilicates, Locality: synthetic