AM_Santite
Formula: K B5 O12
Name: Santite
Unit cell: 11.08 11.14 8.97 90.0 90.0 90.0 , V=1107.18
Space group: ABA2 (41)

Zachariasen W H , Zeitschrift fur Kristallographie , 98 (1937) p.266-274, The crystal structure of potassium acid dihydronium, pentaborate KH2(H3O)2B5O10, (potassium pentaborate tetrahydrate), Locality: synthetic