河北省灵寿县西石门金矿黄铁矿拉曼光谱研究

发布时间：2018-02-25 23:20

  本文关键词： 西石门 金矿 黄铁矿 激光拉曼光谱 世代 矿段　出处：《光谱学与光谱分析》2017年08期 　论文类型：期刊论文

【摘要】：通过测试西石门金矿中不同矿段、不同期次的黄铁矿样品的拉曼谱峰,探讨了该区含金黄铁矿拉曼谱峰位移的变化特征及其矿床学意义。测量结果表明:在240~600cm-1范围内,黄铁矿的拉曼谱峰表现为Fe—[S2]2和Au+—[S2]2-的伸缩振动。不同矿段、不同世代的黄铁矿样品的拉曼图谱位移具明显规律性:矿化最优的330矿段,黄铁矿的拉曼图谱位移相对于290和370矿段,Au+—[S2]2-的伸缩振动变化大,其拉曼谱峰偏的强度大并向低频率偏移明显;反之,矿化差的370矿段,Fe—[S2]2的伸缩振动变化大,强度小,拉曼位移频率变化较小;同一矿段、不同世代的黄铁矿样品,其拉曼谱峰变化也具有以上规律:第Ⅰ世代黄铁矿,拉曼强度最大,拉曼谱峰向低频偏移不明显;反之,主成矿期(Ⅱ,Ⅲ世代)的黄铁矿,拉曼谱峰强度较小,向低频偏移大。这表明:对不同矿段、不同期次的黄铁矿颗粒进行拉曼谱峰测试,可以为推测其含金性及所处的地质环境提供依据。
[Abstract]:By testing the Raman spectrum peaks of pyrite samples from different ore segments in Xishimen gold deposit, the variation characteristics of Raman spectrum shift of gold bearing pyrite in this area and its significance in ore deposit are discussed. The results show that in the range of 240 ~ 600 cm ~ (-1), the variation of Raman spectrum shift of pyrite in Xishimen gold deposit has been studied in the range of 600 cm ~ (-1). The Raman spectrum peaks of pyrite show the extensional vibration of Fe- [S2] 2 and au-[S2] 2-. The Raman shift of pyrite samples in different ore segments and generations shows obvious regularity: the optimal mineralized 330 ore section. The Raman shift of pyrite is larger than that of the stretching vibration of au [S2] 2- in ore sections 290 and 370, the intensity of Raman peak deviation is large and the shift of Raman spectrum is obvious to low frequency, whereas the extensional vibration of Fe- [S2] 2 in section 370 with poor mineralization changes greatly and its intensity is small. The Raman shift frequency of pyrite samples in the same ore section is similar to that of pyrite samples of different generations: in the first generation, the Raman intensity of pyrite is the largest, and the Raman peak does not shift to the low frequency obviously. In pyrite of main metallogenic stage (鈪，

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