| Peats will in situ change successively to lignite, to bituminous coal, and eventually to anthracite. |
| Colours are combined with all shades of grey, ranging from silver to anthracite, accented with rose or fuchsia. |
| While our review sample was anthracite, the Quality Mat is also available in blue, red and orange. |
| Coal is usually classified into the sub-groups known as anthracite, bituminous, lignite, and peat. |
| Depending on the degree of carbon concentration and coalification, one differentiates between lignite, bituminous coal and anthracite. |
| In 1840 iron ore had only recently been discovered and anthracite coal mining had not yet begun. |
