The weight of 1 cubic meter of coal can vary depending on the type and density of the coal. Here are some approximate weights for different types of coal:

1. Anthracite Coal: 1 cubic meter of anthracite coal typically weighs around 1,500 to 1,600 kilograms (3,307 to 3,527 pounds).

2. Bituminous Coal: 1 cubic meter of bituminous coal generally weighs between 1,200 to 1,350 kilograms (2,646 to 2,976 pounds).

3. Sub-bituminous Coal: 1 cubic meter of sub-bituminous coal usually weighs around 1,050 to 1,200 kilograms (2,315 to 2,646 pounds).

4. Lignite Coal: 1 cubic meter of lignite coal typically weighs between 850 to 1,000 kilograms (1,874 to 2,204 pounds).

Please note that these weights are approximate and can vary based on the specific coal characteristics and measurement conditions.