A study of the Huimin- and Jiangfeng-style iron deposits has revealed that the marine volcanogene sedimentary type Huimin and Jiangfeng ore deposits are controlled by metamorphosed intermediate-basic volcanic formation. The Huimin-style iron ore deposits of Huimin Formation in the Lancang Group belong to the volcano-sedimentary Superior Lake type, in association with manganese, whereas the Jiangfeng-style iron ore deposits of Damenglong Group may be regarded as the volcano-exhalative Algoma type characterized by the existence of minor sulfur. On the whole, for the mineralization from volcano-exhalative sedimentation to metamorphism and transformation, the authors find the relevant parts from the ore deposit metallogenic model, and hence the model offers a great potential in search for bended iron formation in this region.