AM_Sr2B5O9OHH2O Formula: Sr2 B5 O11 H2 Name: Sr2B5O9OH.H2O Unit cell: 10.2571 8.0487 6.4043 90.0 127.86 90.0 , V=417.43 Space group: C121 (5)

Barbier J , Park H , The Canadian Mineralogist , 39 (2001) p.129-135, Sr2B5O9OH.H2O, a synthetic borate related to hilgardite