1. No.39 coal is one of high-metamorphism anthracite with black color and near-metallic luster in which semibright coal and semidull coal are dominant lithetype and there is a little dull coal.
   大田水井坑井田39号煤层属高变质无烟煤,灰黑色至黑色为主,似金属光泽,宏观煤岩类型以半亮型和半暗型为主,少量为暗淡型;

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