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在国内,笔者首次采用电子顺磁共振(EPR)波谱仪研究了含金黄铁矿和含金毒砂。低温(77K)和室温(300K)下的EPR谱线都具有一个含金标型吸收峰,该峰具有各向同性的g因子,g=2.001±0.001;而不含金的黄铁矿和毒砂均无该吸收峰。这是由于在含金黄铁矿和含金毒砂中,Au~+等不同电价的离子替换晶格中的Fe~(2+),产生顺磁中心。故EPR波谱仪是寻找金矿的重要手段,值得推广。
In China, the author first used electron paramagnetic resonance (EPR) spectrometer to study gold-bearing pyrite and gold-containing arsenopyrite. The EPR spectra at both low (77K) and room temperature (300K) have a gold-containing absorption peak with isotropic g-factor, g = 2.001 ± 0.001; whereas the gold-free pyrite and poison None of the sand absorption peak. This is because in the gold containing pyrite and gold containing arsenopyrite, Au ~ + and other ions of different prices replace Fe ~ (2+) in the crystal lattice, resulting in a paramagnetic center. Therefore, EPR spectrometer is an important means to find gold, it is worth promoting.