AM_Tuhualite Formula: Fe2 Si6 O15 Na Name: Tuhualite Unit cell: 14.31 17.28 10.11 90.0 90.0 90.0 , V=2499.97 Space group: CMCA (64)

Merlino S , Science , 166 (1969) p.1399-1401, Tuhualite crystal structure, Locality: Mayor Island, New Zealand, Note: Position of H2O not determined in paper