AM_Berborite Formula: Be2 B O5 H3 Name: Berborite Unit cell: 4.434 4.434 5.334 90.0 90.0 120.0 , V=90.82 Space group: P113 (1)

Giuseppetti G , Mazzi F , Tadini C , Larsen A O , Asheim A , Raade G , Neues Jahrbuch fur Mineralogie, Abhandlungen , 162 (1990) p.101-116, Berborite polytypes, Locality: Saga I larvikite quarry, Morje, Porgrunn, Tvelan District, Norway, Sample: 1T polytype, Note: anisoU s from ICSD