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丰宁大营子一带大面积出露古元古代闪长岩和海西期二长花岗岩。两期侵入体的接触带附近金矿（化）点发育，并呈北东向带状集中分布于海西期侵入体的外接触带内。本区矿源、热源、水源都很丰富，成矿地质条件优越，具成矿远景，矿床成因与成矿规律符合“三源”成矿模式。
Large area of Fengning Dayingzi reveals Paleoproterozoic and Hercynian monzogranites. The gold deposits in the vicinity of the contact zone of the two intrusions developed and were distributed in a northerly zonal distribution in the outer contact zone of the Hercynian intrusion. The mineral resources, heat source and water source in this area are very rich. The metallogenic geological conditions are superior. The metallogenic prospect, genesis and metallogenic regularity of the deposit are in line with the “Three-source” metallogenic model.