Citation: Krause, W.; Bernhardt, H.J.; McCammon, C.; Effenberger, H. (2002). Neustaedtelite and cobaltneustaedtelite, the Fe(3+)- and Co(2+)- analogues of medenbachite. American Mineralogist, 87, pp. 726-738.
Formula: As2 Bi2 Co0.5 Fe1.5 H2.5 O12
Chemical name:Bi2 Fe (Fe0.5 Co0.5) O1.5 (O H)2.5 (As O4)2