Citation: Galliski, M.A.; Hawthorne, F.C. (2002). Refinement of the crystal structure of ushkovite from Nevados de Palermo, Republica Argentina. Canadian Mineralogist, 40, pp. 929-937.
Formula: Fe2 H18 Mg O18 P2
Chemical name:(Mg (H2 O)4) (Fe2 (P O4)2 (O H)2 (H2 O)2) (H2 O)2