The ore-bearing rock is composed mainly of andesitic tuff and tuffite.

作者在赋矿层发现了层状电气石岩。

Kapeng syderolite deposit is large,occurred in purple clayey ferruginous mudstone and grey-green clayey shale of Lower Silurian series.

卡棚大型紫砂陶矿主要赋于志留系下统紫红色粘含铁泥岩和灰绿色粘岩,分上下2个含矿岩系,4个矿层。

It is the unsolidified sediment consisting of disordered kaolinite and small amount organic matter and lignite materials.

常含少量有机或与褐煤矿层等伴生。