AM_Ameghinite
Formula: Na B3 O7 H4
Name: Ameghinite
Unit cell: 18.428 9.882 6.326 90.0 104.4 90.0 , V=1115.81
Space group: C12/C1 (15)

Dal Negro A , Pozas J M M , Ungaretti L , American Mineralogist , 60 (1975) p.879-883, The crystal structure of ameghinite