In most porphyry copper deposits, acoustic copper minerals chalcopyrite (CuFeS 2). However, secondary copper sulfide is often formed due to strong alteration and oxidation, such as chalcopyrite (Cu 2 S), copper ore (Cu 4 FeS), and copper blue (CuS). In the oxidation zone of the copper- molybdenum deposit, the iron content is unchanged. However, when groundwater transports copper ions, copper ions react rapidly with chalcopyrite and pyrite to form secondary copper minerals. Magnet Puzzle,Kids Puzzle,Magnetic Puzzle,Kids Education Toys NINGBO NEW SUCCESS ARTS AND CRAFTS CO.,LTD , https://www.craftandtoy.com