This paper reports whole-rock geochemical compositions and zircon dating results of Late Paleoproterozoic crustally-derived carbonatite in the northern Altyn Tagh. The carbonatite cuts well rocks and occurs as stocks or dikes and contains different types of well rocks. It is mainly composed of calcite, diopside, and a few silicate minerals (such as, feldspar, quartz, etc.).  Zircons of the carbonatite show core-rim textures, and commonly show weakly zoning.SHRIMP U-Pb zircon dating result of the carbonatites is (1 931±18) Ma. All these threw lights on that the carbonatite are formed by the anatexis of impure marbles from Milan group.