【摘要】 我们对大冶、马坑、大顶、黄沙坪、鞍山五个矿区的七个铁矿石样品中的磁铁矿作了室温⁵⁷Fe和¹¹⁹Sn穆斯堡尔谱测定,并根据穆斯堡尔数据和化学分析推算出磁铁矿的非理想配比的分子结构式. 初步研究表明,不同的成矿条件和Zn、Mg等二价阳离子的类质同像替代的多少,明显地影响晶胞参数和穆斯堡尔参数.文中讨论了它们的变化规律性.更多还原

【Abstract】 Seven samples of iron ore collected from the Daye,Makeng,Dading,Huang-shaping and Anshan mining area have been studied by Fe⁵⁷ and Sn¹¹⁸ M（o|¨）ssbaueparameters and chemical analyses.The non-stoichiometric structural formulae ofmagnetite have been deduced. The preliminary results show that different mineralization conditions and theamount of isomorphic substitution of Zn²⁺,Mg²⁺,etc.for Fe²⁺ have great influenceon the M（o|¨）ssbauer and lattice cell parameters.Some regularities concerned are alsodiscussed in this paper.更多还原