Abstract: With the application of the new technique，and accompanying with the lithofacies geochemical mapping，the types of ores，compositions of minerals in ores，chemical compositions and trace elements in ores in Dabaiyan tin-polymetallic ore district of Kafang ore field were ascertained.The occurrence states of main components，intergrowth and associated minerals，and harmful components in tin-copper ores，and their distributions in ore-body were found out.Then，four targets were delineated and their metals resources were estimated via the feasibility study on the utilization of the intergrowth components，and some sections are verified.The prospecting occurrence of rubidium and cesium，titanium (niobium and tantalum)mineralization was found.

Key words: Gejiu tin-polymetallic mine, Geochemical explorations, Intergrowth and associated minerals, Comprehensive assessment, New mineral type