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Quantitative high-resolution cathodoluminescence spectroscopy of smithsonite

机译:钛铁矿的高分辨率高分辨率阴极发光光谱

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Five smithsonite samples from locations in Germany, Mexico and Namibia have been investigated with cathodoluminescence (CL) spectroscopy and trace-element analyses. As with other carbonates, the CL properties of smithsonite are mainly controlled by MN~(2+)- and Fe~(2+)-incorporation, because these elements are the most important activator and quencher species, respectively. Additional trace elements may have either a quenching effect (Cu) or have only small or no influence (Ca, Pb). A linear correlation exists between the Mn content and the intensity of the Mn-emission band in smithsonite, which can be quantified, if the Cl intensity is related to the number of moles of Mn rather than the weight fraction. A correlation between the Cl intensity and the Mn concentration, which is valid for all trigonal carbonates, is obtained from the published results of calcite, dolomite and smithsonite. Matrix effects due to the different chemical composition of the carbonate minerals seem to be of lesser importance.
机译:通过阴极发光(CL)光谱和痕量元素分析,对来自德国,墨西哥和纳米比亚的五个史密斯样品进行了调查。与其他碳酸盐一样,新铁矿的CL性质主要受MN〜(2 +)-和Fe〜(2+)的结合控制,因为这些元素分别是最重要的活化剂和淬灭剂。额外的痕量元素可能具有淬灭作用(Cu)或影响很小或没有影响(Ca,Pb)。如果Cl强度与Mn的摩尔数而不是重量分数有关,则在新铁矿中Mn含量与Mn发光带的强度之间存在线性相关关系,这可以量化。从方解石,白云石和史密松石的公开结果中可以得出对所有三角碳酸盐都有效的Cl强度和Mn浓度之间的相关性。由于碳酸盐矿物化学成分的不同,基体效应似乎不太重要。

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