Abstract <p>The ultramafic–mafic intrusive massifs of the Ural Platinum Belt (UPB) comprise dunite–clinopyroxenite–gabbro and gabbro–gabbronorite complexes. Their consistent spatial association suggests a genetic relationship, which has been addressed in several studies but remains a matter of debate. We present new geological, mineralogical, and geochemical data for a complete ultramafic–mafic rock series from the Kumba massif of the UPB, including dunites, clinopyroxenites, and wehrlites, as well as anorthite and bytownite gabbros, gabbronorites, and monzogabbronorites. Three intrusive phases are recognized: (i) dunite–clinopyroxenite, (ii) clinopyroxenite–gabbro, and (iii) gabbro–gabbronorite–monzogabbronorite. Despite the polyphase nature of the massif, the compositions of the rocks and their rock-forming minerals support the interpretation of the entire sequence as a single igneous series derived from ankaramite-like parental melts. This interpretation is further supported by thermodynamic modeling of mineral equilibria.</p>