Anthracite

Anthracite, the highest grade of coal, is a metamorphic rock renowned for its lustrous appearance, hardness, and ability to burn with a clean, smokeless flame. With its elevated carbon content and low impurity levels, anthracite is prized for its high energy value, making it particularly valuable for industrial and residential use. The anthracite fields in Pennsylvania, USA have been a significant source of this coal for many years. Other countries that have notable anthracite reserves include China, Russia, Ukraine, and South Africa.