磁铁石英岩即铁隧岩，或鞍山式贫铁矿石，多集中分布在鞍本、五岚及冀东地区。矿石中主含磁铁矿和石英，依据磁铁石英岩的磁学性质，一般利用磁铁矿和石英磁化系数的较大差别进行磁选，典型的这一类选矿厂有美国伊里选厂、明塔克选厂、加拿大亚当斯选厂、前苏联的库尔斯克矿石公司、中国的大石河南芬和大孤山等选矿厂。

Magnetite quartzite iron rock tunnel, or Anshan type lean iron ore, more concentrated in the saddle, and five LAN in Jidong area. Ore main containing magnetite and quartz, based on the magnetic properties of magnetite quartzite, the general use of magnetite and quartz susceptibility difference of magnetic separation, typical of this type of concentrator with American Yi in dressing plant, plant mintac, Adams Canada concentrator, former Soviet Union of Kursk ore company, China Stone Henan Fen and Dagushan etc. concentrator.