东北某铁矿区震旦纪底部确一层分布广、储量大的含有稀土和锰的铁矿层.该矿层,日伪时期曾被进行过掠夺式开采.这种矿石,前人称之为羚羊石(Chamosite,即鲕绿泥石),结论为“世界上很少当作铁矿床开采”、“品位太低,在目前之选矿基础上,尚无法利用”的硅酸铁.因此,未做全面系统的试验研究工作,长期沉睡于地下.遵照毛主席关于“开发矿业”和“人类总得不断地总结经验,有所发现,有所发 At the bottom of the Sinian in the northeastern iron ore area, there was indeed a wide distribution and large reserves of iron ore containing rare earths and manganese, which had been predatoryly exploited during the Puppet War. Such ore, formerly known as antelope (Chamosite), concluded that ”the world is seldom treated as iron ore“, ”the grade is too low, based on the current beneficiation, can not be used “ of iron silicate Therefore, we have not done a comprehensive and systematic pilot study and have long fallen asleep in the ground.According to Chairman Mao’s summary on ”developing the mining industry“ and ”humankind,