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

卡型紫砂陶矿主要赋存于志留系下紫红色粘含铁泥岩和灰绿色粘岩中,分上下2个含矿岩系,4个矿层。