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本文对我国一些地区的锡石、黄锡矿、辉锑锡铅矿等锡矿物样品进行了化学成分分析、穆斯堡尔谱测试,并利用穆斯堡尔谱方法区分了这些锡矿物中锡的价态。实测结果表明,锡石中的锡全是Sn~(4+)(六配位),黄锡矿中的锡是Sn~(4+)(四配位),辉锑锡铅矿中的锡有Sn~(4+)及少量 的Sn~(2+)。钙铁榴石中的锡是Sn~(4+),它是以类质同像替换方式进入[Y]位替换Fe~(3+)。同时,讨论了同质异能位移值与价态的关系,I.S值的增大顺序为:Sn~(4+)→Sn~0→Sn~(2+)。根据经验公式,估算了一些锡矿物中氧和硫配位基的电负性,
In this paper, the chemical composition analysis, Mossbauer spectroscopy test of tin minerals in some areas of China such as cassiterite, kesterite and stibnite were carried out, and the Mossbauer spectroscopy method was used to distinguish the tin minerals from tin The price of. The results show that the tin in the cassiterite is Sn ~ (4 +) (hexacoordination), the tin in the yellow tin mine is Sn ~ (4 +) (tetracoordinate), tin There Sn ~ (4 +) and a small amount of Sn ~ (2+). The stannum in stannum is Sn ~ (4 +), which is substituted into Fe ~ (3+) in [Y] position by isomorphism. At the same time, the relationship between displacement and valence of isomorphic is discussed. The increasing order of I.S value is Sn ~ (4+) → Sn ~ 0 → Sn ~ (2+). According to the empirical formula, the electronegativity of oxygen and sulfur ligands in some tin minerals was estimated,