sulphur ore
5.The control of the deep-seated structural-magmatic process over the metallogenic system around the middle-lower Yangtze River reaches is shown as: (1) the mantle uplift belt is closely related to the general geological background of the metallogenic system; (2) the primitive magma originated from different parts of the mantle uplift belt (mantle ridge or mantle slope) shows differences in style of formation and composition and results in different magmatic series and metallogenic subzones, respectively; (3) the varying depths of structural-magmatic chambers may form a "three-layered structure" (central type, network-like and ring-like) and this is the primary factor that controls the different magmatic series and the concerned cluster of ore deposits; (4) the alkaline basaltic magma derived from the mantle ridge forms high-potassium and calcium alkaline magma and shoshonitic magma due to its altering intensity of AFC process with the lower crustal material, which has something to do with the copper-gold and iron-sulphur metallogenic subsystems, respectively.
