Zirsilite-(Ce), (Na,)12(Ce,Na)3Ca6Mn3Zr3Nb(Si25O73)(OH)3(CO3).H2O, and carbokentbrooksite, (Na,)12(Na,Ce)3Ca6Mn3Zr3Nb(Si25O73)(OH)3(CO3).H2O, two new eudialyte-group minerals from the Dara-i-Pioz alkaline massif, Tajikistan.