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Figure 7
DCM results of the ROI in Fig. 3[link]. In image (a), void is displayed as red, coal matrix is displayed as green, minerals of group C are displayed as blue, and minerals of group D are displayed as purple. Image (b) gives the distribution of group C, and image (c) gives the distribution of void. On a pixel, the displayed intensity for each colour is proportional to an appropriate compositional volume fraction. The co-existence of multiple compositions in a voxel is shown as colour mixing in (a).

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ISSN: 1600-5775
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