吉林大学学报(地球科学版) ›› 2021, Vol. 51 ›› Issue (3): 783-791.doi: 10.13278/j.cnki.jjuese.20200116
范鹏飞1,2, 邓述培3, 邹源4, 刘朝2, 翟宏宇1, 周冬冬5
Fan Pengfei1,2, Deng Shupei3, Zou Yuan4, Liu Chao2, Zhai Hongyu1, Zhou Dongdong5
摘要: 偏光显微镜反光镜下鉴定金属矿物是最常用、最快捷有效的方法,然而鉴定结果容易受到鉴定者主观因素或磨片情况的影响。为了更快速、准确地在反光镜下鉴定矿物,利用XRF半定量分析技术快速、无损、前处理简单等特点,以及磨平抛光的矿石矿物在半定量分析过程中能较好地避免楔入效应和阴影效应的有利因素,采取了先用XRF半定量分析测得的结果去反推矿物,再在显微镜下鉴定矿物的方法。以多金属硫化物矿石、含铀多金属矿石及含微量铀的矿石样品为例进行鉴定,结果表明,在鉴定前知道光片上的元素及其质量分数,通过地球化学方法和经验法反推矿物,结合显微镜观察需要鉴定的矿物,可有效避免忽略掉透明/半透明矿物(锡石)、小粒径矿物(沥青铀矿)、易混淆矿物(铀黑),提高光片鉴定工作的效率和准确性。
中图分类号:
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