Question

Appearance
Anthracite
GPT 3.5
Anthracite is a type of coal that is extremely dark black in color. It has a high carbon content and low moisture and volatile matter, making it a hard and dense form of coal. Anthracite is typically shiny and smooth in texture, with a metallic luster. It is often used as a fuel source for heating and generating electricity due to its high energy content and low impurities. In appearance, anthracite can be distinguished from other types of coal by its stark black color and compact nature.