Hard Compact Anthracite Coal is a hard, compact variety of mineral coal that has a high lustre. The Anthracite Coal has the highest carbon count and contains the fewest impurities of all coals, despite its lower calorific content. The Anthracite Coal is metamorphosed type of coal in which the carbon content is between 92% and 98%. The Hard Compact Anthracite Coal can be availed in different grades.