AM_Peprossiite-(Ce)_1
Formula: (La.785 Th.215) Al2 B4 O10.667
Name: Peprossiite-(Ce)
Unit cell: 4.596 4.596 9.309 90.0 90.0 120.0 , V=170.29
Space group: P-62M (189)

Callegari A , Caucia F , Mazzi F , Oberti R , Ottolini L , Ungaretti L , American Mineralogist , 85 (2000) p.586-593, The crystal structure of peprossiite-(Ce), and anhydrous REE and Al mica-like, borate with square-pyramidal coordination for Al, Sample: Pep2