Application of Micro X-Ray Fluorescence Imaging Technology in Core Analysis

Fig. 2. Element distribution map of copper-bearing hornstones with skarn breccia
(a): Photo of sample; (b)—(i): Elemental maps using micro X-Ray Fluorescence

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Fig. 3. Element distribution map of copper-bearing siliceous rock
(a): Photo of sample; (b)—(i): Elemental maps using micro X-Ray Fluorescence

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Fig. 4. Element distribution map of copper-bearing skarn
(a): Photo of sample; (b)—(j): Elemental maps using micro X-Ray Fluorescence

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Fig. 5. Element distribution map of copper-bearing pyrrhotite ore
(a): Photo of sample; (b)—(i): Elemental maps using micro X-Ray Fluorescence

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Table 1. Geological information of core samples

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Table 1. Geological information of core samples

样品名	起始深度/m	终止深度/m	样品尺寸/cm	地层	主要矿石矿物	主要脉石矿物
含铜角岩夹矽卡岩	492.23	492.40	17×5.0	三叠系下统小凉亭组	黄铜矿、黄铁矿	石英、石榴子石、透辉石、绿泥石、方解石
含铜硅质岩	852.68	852.90	22×4.5	二叠系下统栖霞组	黄铜矿	石英、石榴子石、透辉石
含铜矽卡岩	1 124.94	1 125.10	16×4.6	石炭系中、上统黄龙、船山组	黄铜矿、黄铁矿、磁黄铁矿	石榴子石、透辉石、石英、绿泥石
含铜磁黄铁矿石	1 156.70	1 156.90	20×4.7	石炭系中、上统黄龙、船山组	磁黄铁矿、黄铜矿、磁铁矿	绿泥石、透闪石

Table 2. Scan parameters of Micro-XRF

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Table 2. Scan parameters of Micro-XRF

样品名	宽/ pixel	高/ pixel	总像素/pixel	单像素大小/ μm	停留时间/ (ms·pixel^-1)	移动速度/ (mm·s^-1)
含铜角岩夹矽卡岩	3 480	998	3473 040	50	10	5
含铜硅质岩	4 545	901	4 095 045	50	8	6.3
含铜矽卡岩	3 398	932	3 166 936	50	8	6.3
含铜磁黄铁矿石	4 245	937	3 977 565	50	10	5

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Qi-yan ZHANG, Xiao LIU, Jie YANG, Wei-xin SHI, Qing-nan GAO, Hong ZHANG, Huang DENG. Application of Micro X-Ray Fluorescence Imaging Technology in Core Analysis[J]. Spectroscopy and Spectral Analysis, 2022, 42(7): 2200

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