Cooper, M.A., Dunning, G., Hawthorne, F.C., Ma, C., Kampf, A.R., Spratt, J., Stanley, C.J. and Christy, A.G. (2022) The first occurrence of the carbide anion, C4–, in an oxide mineral: Mikecoxite, ideally (CHg4)OCl2, from the McDermitt open-pit mine, Humboldt County, Nevada, U.S.A. American Mineralogist 108, 606-613.