Characteristics of an Altered Diabase Dike in a Coal Seam: A Case Study from the Datong Coalfield, Shanxi, China

Figure 4

(a) Photo of sample TS6. (b) The coal liquefied and seeped into fissures at high temperature (stereomicroscopic images). (c) Carbonate minerals at the contact between the dike and natural coke (stereomicroscopic images).

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(b)

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