It was asserted that the ore is mainly composed of minerals of kurnakovite, inderite and pinnoite.
确定了该硼镁矿的主要矿物组成为库水硼镁石、多水硼镁石及柱硼镁石。
2
The XRD characterization and chemical analysis of boron concentrates and tailings showed that pinnoite and calcined gypsum has been basically separated through reverse flotation.
There is a large number of pinnoite ore in Dachaidan area of Qinghai province, these boron resources can not be directly used as raw materials for boron chemicals because of low grade (less than 10%).