Parasibirskite Takahashi R, Kusachi I, Miura H Journal of Mineralogical and Petrological Sciences 105 (2010) 70-73 Crystal structure of parasibirskite (CaHBO3) and polymorphism in sibirskite and parasibirskite Locality: Fuka, Okayama Prefecture, Japan _database_code_amcsd 0013138 6.722 5.437 3.555 90 93.00 90 P2_1/m atom x y z Biso Ca .147 .25 .252 1.48 B .716 .25 .280 0.9 OH1 .523 .25 .367 1.37 O2 .819 .030 .240 1.37