Dagenaisite, Zn3Te6+O6, is a new mineral from the Gold Chain mine, Tintic district, Juab County, Utah, U.S.A. The mineral is the natural counterpart of synthetic Zn3Te6+O6, which has a structure based on an approximate close packing of O atoms in an hhchhc sequence along [100]. Not analogous to mcalpineite, which is cubic. Compare the chemically related zincospiroffite.
