Some minerals which were not reported in kimberlites have recently been found in kimberlites of the North China platform. Tbey are native iron, native copper, native tin, fersilicite, ferdisilicite, unnamed mineral consisting of Si, Fe and Ti, and chromian kennedyite. A preliminary study shows that they are related to deep fluids of the mantle in a strong reduction environment. The disoovery of these minerals provides evidence for fluid metasomatism in asthe-nosphere.