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辉锑锡铅矿是结构复杂而尚未确定,以及晶体化学尚有争议的一种稀有矿物。X射线衍射结果表明其结构是由假四方亚层(称T层)和假六方亚层(称H层)穿插组成的层状结构。T层的化学成分具有MeS形式,H层则具有MeS_2形式。本文通过广西大厂的辉锑锡铅矿的穆斯堡尔谱研究,确定了矿物中Sn的大部分为Sn~(4+),而Sn~(2+)只占较少的部分;Fe中含有Fe~(3+)和Fe~(3+)。它们在T层和H层中的分布为Sn~(2+)(T)占5.6%,Sn~(4+)(T)占25.9%,Sn~(4+)(H)占68.5%,Fe~(2+)(T)占59.5%,Fe~(3+)(H)占40.5%。从Sn、Fe的穆斯堡尔谱参数还可看出H层的共价性比T层的强。
Antimony tin-lead mine is a complex structure has not yet been identified, as well as crystal chemistry is still a controversial rare minerals. X-ray diffraction results show that the structure is a layered structure composed of interlacing of pseudo-tetragonal sub-layer (called T layer) and pseudo-hexagonal sub-layer (called H layer). The chemical composition of the T layer has the MeS form and the H layer has the MeS 2 form. In this paper, through the Mossbauer spectroscopy of the antimony-tin-lead ore from Guangxi Dachangsi, most of the Sn in the minerals is determined as Sn 4+, while Sn 2+ only accounts for a small part. Fe Contains Fe ~ (3+) and Fe ~ (3+). The distributions of Sn ~ (2 +) (T) in T layer and H layer are 5.6%, Sn ~ (4 +) (T) is 25.9%, Sn ~ (4 +) Fe ~ (2 +) (T) accounted for 59.5%, Fe ~ (3 +) (H) accounted for 40.5%. From the Mossbauer spectral parameters of Sn and Fe, we can also see that the covalent property of H layer is stronger than that of T layer.