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自然镍 nickel

Release date:2017-04-12  source:选矿技术网  Browse times:6481

组成与结构:自然Ni,理论上应含镍100%,自然界产出的自然镍中常类质同象含有大量的(Fe%26le;40%)和少量的Co、Cu。自然镍富铁变种称铁镍矿含Ni67%,其组成相当于Ni2Fe。镍纹石和铁纹石是陨石中的Fe-Ni系的两个相。镍纹石含大量镍(可达48%)。等轴晶系,具型结构。镍纹石和铁纹石在陨石中多组成格子构造。

物化性质:灰白色,不透明。属光泽。硬度4.5,相对密度8.91。具延展性。难熔。化学性稳定,在空气中不氧化。

产地:新喀里多尼亚发现过自然镍,美国俄勒岗州曾发现过铁镍矿。

 
 
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