Illite jade, in vein, was discovered in some copper mine, located in Daye county, HubeiProvince, and is a rind hydrothermal alteration rock from anorthosite.

• 伊利石玉产于湖北省大冶市某铜矿区内。玉石矿体呈脉状产出，系由斜长岩脉经热液蚀变而形成。