菱铁矿 Traditional form: 菱鐵礦 Pinyin (reading): língtiěkuàng Definitions: siderite Characters: 菱 - water chestnut, water caltrop 铁 - iron; strong, solid, firm 矿 - mine; mineral, ore Traditional characters: 菱 - water chestnut, water caltrop 鐵 - iron; strong, solid, firm 礦 - mine; mineral, ore