Abstract: As a subsystem of the Digital Geology Survey System (DGSS) developed by China Geological Survey, iExploration-Estimation and Modeling system (iExploration-EM) has realized an integrated processing of mineral survey data involved in mineral survey data management, ore-body delineation, reserve estimation, assistant generation of geological survey maps and ore-body modeling.The paper presents the technical advantages and main functional characteristics in iExploration-EM, and discusses the process of reserve estimation of digital mineral resource survey and assistant generation of geological survey maps by iExploration-EM and its perspective in digital mineral surveys.

Key words: iExploration-EM, Digital mineral survey, Reserve estimation