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

Figure 13

(a) Schematic of the intrusion alteration in the dike. (b) Carbonation of mafic minerals when volatiles are released from the organics and minerals in the coal. (c) Albitization of plagioclase. Labradorite is replaced by albite and kaolin group minerals.