a widely occurring iron oxide ore; a mixture of goethite and hematite and lepidocrocite
例句
用作名词(n.)
Their colors are also generated after the formation of jadeite crystals, often found in the red layer, caused by disseminated limonite.它们的颜色也是硬玉晶体生成后才形成，常常分布于红色层之上，是由褐铁矿浸染所致。
