Official State Rock of West Virginia
West Virginia designated bituminous coal as the state rock in 2009. Coal is an organic sedimentary rock used as fuel. All State Rocks & Minerals
Coal is a fossil fuel, composed largely of carbon, formed from the remains of plants that lived approximately 100 to 400 million years ago.
Bituminous coal is often called "soft coal" but the term has nothing to do with the hardness of the rock.
Bituminous coal is the most abundant rank (type) of coal
Approximately 50% of the coal produced in the United States is bituminous coal.