AM_Tincalconite
Formula: Na B2 O6 H5
Name: Tincalconite
Unit cell: 11.09 11.09 21.07 90.0 90.0 120.0 , V=2244.18
Space group: R32 (155)

Giacovazzo C , Menchetti S , Scordari F , American Mineralogist , 58 (1973) p.523-530, The crystal structure of tincalconite