In Chinese, This mineral is generally called Pyrite, pyrite or pyrite. In Custom declaration, it is also known as Ferro sulphur to be in accordance with HS code (but that name is rarely used in daily work). Its molecular formula is FeS2. In English, it is interpreted as Pyrite or Iron Pyrites, Sometimes, Ferro sulphur, And that’s why it’s called iron sulfide or pyrite in Chinese. In fact, pyrite and iron sulfide in Chinese refer to different products, pyrite is a type of primary ore, its Molecular formula is FeS2, and HS code is 25020000, Iron sulfide results from the chemical reaction of iron pin and flotation sulfur. Its Molecular formula is FeS, and HS code is 2830909000
