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褐铁矿

褐铁矿
褐铁矿
基本资料
类别氢氧化物 铁矿
化学式FeO(OH)·H2O
性质
颜色土黄色、棕色、咖啡色,有时呈黑褐色
晶体惯态于试管中加热会释放出水分;在酸中缓慢溶解
晶系非晶形
解理参差状
断口
韧性/脆性易碎
莫氏硬度5.0~5.5
光泽暗色无光泽
条痕黄棕色
密度2.7~4.3g/cm³
熔点加热风化放出水分。高于200

褐铁矿Limonite)是一种常见的铁矿,常形成于铁矿床的氧化带中,多以次生矿形态存在。也经常因沉积作用生成于河床海床沼泽中。不会形成晶体结构,通常为结核状、乳状、土块状出现。并具有放射状的结构。常以其他矿物之假晶形态出现,如:黄铁矿。陶瓷板条痕为黄棕色。为相当重要的铁矿资源之一。

中药“禹余粮”(别称:余粮石、白禹余、太一禹余粮、石脑)即此矿物。

参见

参考文献

  • 《岩石与矿物图鉴》-猫头鹰出版社
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褐铁矿
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