Bituminous coal is the coal most people are used to. The black, soft, slick rock is the most common coal used around the world. Does not contain recognisable plant fragments.
THIS PRODUCT SHOULD NOT BE USED FOR HEATING/COMBUSTION EXPERIMENTS. It burns very hot and is very hard to extinguish.
Metamorphic. A high grade of coal that has metamorphosed from an organic 'sedimentary' coal.
Size: Hand specimen.
Images are examples of specimens only. Sizes and shapes may vary.