The result indicated that granularity magnetite was uneven.Most of Ascharite particles is fine and intergrowth with magnetite and Zermattite.

• 结果表明磁铁矿的粒度粗细不均,多数硼镁石的粒度细,常以微晶粒状集合体与磁铁矿和蛇纹石共生。