The structure breaking up and rock alteration stage after dike rock formation is the main metallogenic epoch. The genesis type of the gold deposit is structure alteration rock type.
Illite jade, in vein, was discovered in some copper mine, located in Daye county, HubeiProvince, and is a rind hydrothermal alteration rock from anorthosite.
Ore bodies consists of Au-bearing quartz veins and the alteration rocks between them and ore grade depends on number of the quartz vein.
