AM_Epididymite_1 Formula: Na Be Si3 O8 H Name: Epididymite Unit cell: 12.7334 13.6298 7.3467 90.0 90.0 90.0 , V=1275.05 Space group: PNMA (62)

Gatta G D , Rotiroti N , McIntyre G J , Guastoni A , Nestola F , American Mineralogist , 93 (2008) p.1158-1165, New insights into the crystal chemistry of epididymite and eudidymite, from Malosa, Malawi: A single-crystal neutron diffraction study, Locality: Malosa, Malawi