In the nodules, the ore minerals include vernadite and a small amount of todorokite, gangue minerals are apatite quartz and plagioclase and minor minerals are montmorillonite, kaolinite, natrolite, cristobalite, pyroxene, stibite and others.
矿石矿物为水羟锰矿和少量的钙锰矿，脉石矿物为磷灰石、石英、斜长石等，微量矿物有蒙脱石、高岭石、钠沸石、方英石、辉石、束沸石等。