The age of jinchuan body was estimated between 1300ma ~ 1500ma ; period of time . the age of jinchuan body was estimated between 1300ma - 1500ma ; disseminated ore is about ~ 1217ma ; sideronitic ore is about 960ma and massive ore is about 911 ma 其成岩年龄可能在13亿年到15亿年之间;浸染状贫矿石主要形成年龄约1217ma ;海绵陨铁矿石主要形成年龄约960ma ;而块状矿石形成年龄911ma左右。