河南某斑岩型多金属硫铁矿床中的磁铁矿矿体,多赋存于钾长花岗斑岩与白云岩接触带部位的白云岩及镁矽卡岩中,就其产出特点,一般认为属矽卡岩型磁铁矿。今据磁铁矿的化学成分及标型特征的研究,发现该磁铁矿与简单的典型矽卡岩铁矿床中磁铁矿的成因特征有较大的差异,而与斑岩型矿床中磁铁矿的成因特征相近。 Magnetite orebodies in a porphyry-type polymetallic pyrite deposit in Henan Province are mostly hosted in dolostones and magnesian skarn at the contact zone between the k-long granitic porphyry and dolomite. In terms of their output characteristics , Generally considered a skarn type magnetite. According to the chemical compositions of magnetite and the study of its standard features, it is found that there are great differences between the magnetite and the simple typical skarn iron deposits in the genesis of magnetite. However, The genesis of magnetite is similar.