Abstract: The establishment of three dimensional model of deposit is of great significance to the engineering design and policy decision, which can quantitatively reflect the mineralization strength and mineralization enrichment law of orebodies by mathematics and graphs. It can thus provide scientific guidance for mine production and meanwhile, the basis for ore prospecting at the deposit depth and edges. The paper investigates the average gold grade and metal amount change of the orebodies along the strike, dip and thickness of X section of Beiyu gold deposit in Yunnan and discusses the application of 3D model of deposit in the production and mineralization forecast.

Key words: Gold deposit, 3D model of deposit, Mineralization enrichment law, Mineralization forecast