AM_Bassanite_2 Formula: Ca2 S2 O9 H2 Name: Bassanite Unit cell: 12.0317 6.9269 12.6712 90.0 90.27 90.0 , V=1056.04 Space group: I121 (5)

Bezou C , Nonat A , Mutin J C , Christensen A N , Lehmann M S , Journal of Solid State Chemistry , 117 (1995) p.165-176, Of the crystal structure of gamma-CaSO4, CaSO4*0.5(H2O), and CaSO4*0.6(H2O), by powder diffraction methods, Locality: Maurienne, France, Sample: SH1, neutron Diffraction