Infrared Spectra Characteristics of the Silicate Nickel Ores: A Comparison Study on Different Ore Samples from Indonesia and China
YANG Meng-li1, FU Wei1, 2*, WANG Bao-hua1, 2, ZHANG Ya-qian1, HUANG Xiao-rong1, NIU Hu-jie3
1. Department of Earth Sciences, Guilin University of Technology, Guilin 541004, China 2. Guangxi Key Laboratory of Hidden Metallic Ore Deposits Exploration, Guilin 541004, China 3. Jinchuan Group, Jinchang 737100, China
Abstract：The silicate nickel ores developed in the lateritic nickel deposit, from Kolonodale, Sulawesi Island, Indonesia, and Yuanjiang, Yunnan province, China, were selected for the present study. The X-ray diffraction and Fourier infrared spectra were used to analyze the mineralogical attribute of laterite nickel oresfrom two different places. The results show that these two different silicatenickel ores have unique infrared spectra characteristics individually, which contributes to the ore classification. The silicate nickel ores from Kolonodale deposit, Indonesia, can be classified as the serpentine type, the montmorillonite+serpentine type, and the garnierite type. While, the silicate nickel ores from Yuanjiang deposit, China, can be classified as the serpentine type and the talc+serpentine type. Moreover, the mineral crystallinity of Yuanjiang nickelores is generally better than Kolonodale nickel ores. According to the advantage of infrared absorption spectra in distinguishing mineral polytypes, it can bedetermined that lizardite is the main mineral type in the silicate nickel ores of the two deposits, and there is no obvious evidence of chrysotile and antigorite’s existence. The characteristic of infrared absorption spectra also shows that frequency change of OH libration indicates Ni (Fe) replacing Mg in the serpentine type nickel-bearing mineral, that is, OH libration of serpentine moves to higher frequency, with the proportion of Ni (Fe) replacing Mg increasing.
杨梦力1，付 伟1, 2*，王葆华1, 2，张亚倩1，黄小荣1，牛虎杰3 . 硅酸盐型红土镍矿石的红外光谱研究：印尼与中国不同产地矿石样品的对比 [J]. 光谱学与光谱分析, 2015, 35(03): 631-634.
YANG Meng-li1, FU Wei1, 2*, WANG Bao-hua1, 2, ZHANG Ya-qian1, HUANG Xiao-rong1, NIU Hu-jie3 . Infrared Spectra Characteristics of the Silicate Nickel Ores: A Comparison Study on Different Ore Samples from Indonesia and China. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2015, 35(03): 631-634.
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