1)greenalite['ɡri:nə,lait],土状硅铁矿2)earthy manganese-iron deposits,土状锰铁矿3)argillaceous hematite,土状赤铁矿4)high-silicon iron ore,高硅铁矿5)alvite,硅铁锆矿6)gillespite,硅铁钡矿
用法和例句
Because of red soil process strongly, earthy manganese-iron deposits widely distribute, resources are huge, ores are easily exploited and difficultly beneficiated, regarded as black soil long term.