In these places, the Makarwal coal bed overlies gray, rooted mudstone. No age for the red mudstones has been obtained, and so the deposits have been included in the Hangu Formation, with the Makarwal coal bed. The combined lithofacies in the upper part of the Hangu Formation is calcareous and contains terrestrial plant and marine animal fossils. These units are gradational with the minor carbonate lithofacies and with the overlying Lockhart Limestone. The coal bed is commonly bright, sometimes banded, resinous, pyritic, and cleated.
Gypsum occurs along some of the cleats.
Sandy or muddy partings or stringers are common. Roof rock ranges from carbonaceous shale to mudstone or sandstone that is rooted or burrowed. Floor rock includes lateritic mudstone, rooted claystone, mudstone, and fine- grained sandstone that is commonly pyritic and carbonaceous. He reported that the coal bed was resin rich and variable in thickness. Inertinite macerals averaged 18.4 percent, and liptinite macerals averaged 9.8 percent.