AM_Takedaite
Formula: Ca3 B2 O6
Name: Takedaite
Unit cell: 8.6377 8.6377 11.849 90.0 90.0 120.0 , V=765.61
Space group: R-3C (167)

Vegas A , Cano F H , Garcia-Blanco S , Acta Crystallographica, Section B , 31 (1975) p.1416-1419, The crystal structure of calcium orthoborate: a redetermination