The iron ore from Dongchuan Baozipu,Yunnan has complex properties.It contains hematite and limonite that are valuable minerals and high impurity content of both phosphorus and silicon.

• 云南东川包子铺铁矿石性质复杂,有用矿物为赤铁矿和褐铁矿,杂质磷和硅含量较高,磷主要以胶磷矿或类质同象形式赋存在赤铁矿和褐铁矿之中,属高磷难选赤褐铁矿石。