铁矿砂 iron ore ; iron wire ; iron sand

磁铁矿砂 magnetite ore ; [矿物] magnetite sand

褐铁矿砂 limonite ore

镍铁矿砂 ferro-nickel ore

钛铁矿砂 ilmenite sand

赤铁矿砂 hematite ore

海上铁矿砂开采船 marine iron ore sand dredger

含黄铁矿粉砂岩 pyritic siltstone