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菱铁矿

菱铁礦
基本資料
類別碳酸盐
化学式FeCO3
晶体空间群三方晶六边形偏三角
H-M symbol: (32/m)
空间群: R 3c
晶胞a = 4.6916 Å, c = 15.3796 Å; Z=6
性質
顏色白色微带黄色
晶体惯态菱面体
晶系三方晶系
解理Perfect on {0111}
断口从参差不齐到贝壳状
莫氏硬度3.5–4.5
光澤玻璃
條痕淡黄
比重3.9
光學性質单轴向 (-)
折射率不透明
双折射δ = 0.242
參考文獻[1][2][3]
菱切

菱铁矿(Sideriet)是一种分布比较广泛的矿物,屬碳酸盐矿物,成份為碳酸亚铁(FeCO3)。它含有48%的而不含有,所以它是一个有价值的铁矿物。通常替代铁造成菱铁矿-菱锌矿,菱铁矿-菱镁矿和菱铁矿-菱锰矿固溶体系列。[2]

菱铁矿的莫氏硬度为3.75-4.25,比重为3.96,有白色条纹和玻璃光泽或珍珠光泽。

菱铁矿产于热液矿脉和沉积矿床中,并与重晶石萤石方铅矿,以及其他矿物是相关的。它也是在页岩砂岩中常见成岩作用的矿物,在其中它有时形成凝结物。自然界的菱铁矿含有不同数量的杂质,一般经焙烧后可作炼铁原料。

参考文献

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菱铁矿
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