Analysis on Potentiality of Diamond Mine Prospecting in Henan Province

In recent years, our country restarted the work of geological exploration for diamond mine, Despite that a lot of diamond mine prospecting materials have been accumulated,until now autogenetic diamond has not been found yet in Henan Province. Henan Province is located at North China Plate, Yangzi Plate and the Qinling-Dabie mountain belts in the viewpoint of plate tectonics. There are archean continental basements in the North China Plate and Yangzi Plate. There are some kimberlite outcrops in Hebi region, and this geological background may form autogenetic diamond, Theory analysis and exporation practice show that natural diamond is found in kimberlite and lamproite rocks, ultramafic igneous, and ultrahigh press metamorphic rocks. Hebi region in Henan Province existed some kimberlites,and some micro-diamonds were found in soil accompanied with indicator minerals abnormity here, which is located adjacent to a big fault system. All these geological information gives clues of diamond mine potentiality. Theoretic analysis shows that the eclogite-facies ultrahigh pressure metamorphism may grow gem quality diamond, So it is feasible to find gem quality diamond in the ecologites from Tongbo region, Basic research is necessary for the ore potentiality assessment on the kimberlites in Hebi region. Attempts to explore the ecologites in Tongbo region are expected in the future.