Dept. of Chemistry, Tirupati 517 502, India.
Spectrochim Acta A Mol Biomol Spectrosc. 2011 Oct 15;81(1):308-12. doi: 10.1016/j.saa.2011.06.016. Epub 2011 Jun 29.
The mineral sphalerite (Zn,Fe)S has been characterized by a combination of X-ray diffraction, EPR and NIR spectroscopy. The optical absorption spectrum of mineral sphalerite is due to an iron impurity only, which is in a distorted octahedral environment. The g=2.2 is attributed to iron and g and A value observed in the spectrum 1.999 and 6.0 mT are assigned to Mn(II) impurity in the mineral. These results indicate that iron and Mn(II) impurity have entered the lattice by substitution. The EPR results confirm the presence of manganese in a distorted octahedral environment. It is evident from the chemical analysis that iron is present in higher concentrations. NIR results are due to the presence of water and sulphide fundamentals which also support the formula of the mineral. No sulphate in the sphalerite mineral was observed.
通过 X 射线衍射、电子顺磁共振和近红外光谱的综合分析，对闪锌矿（Zn，Fe）S 进行了表征。矿物闪锌矿的光吸收光谱仅归因于铁杂质，该杂质处于扭曲的八面体环境中。g=2.2 归因于铁，在光谱中观察到的 g 和 A 值为 1.999 和 6.0 mT，被分配给矿物中的 Mn（II）杂质。这些结果表明，铁和 Mn（II）杂质通过取代进入晶格。电子顺磁共振结果证实了锰在扭曲的八面体环境中的存在。从化学分析中可以明显看出，铁的浓度较高。近红外结果归因于水和硫化物基的存在，这也支持了矿物的化学式。在闪锌矿矿物中没有观察到硫酸盐。
