Coal rocks fossil energies

This set of 12 rocks allows visualizing the successive stages of transformation in the mineralization process of plants. It addresses the theme of fossil fuel resources: coal. 80% of the available fossil energy reserves are made up of coal. Delivered with peat rocks (x 3), coal/lignite rocks (x 3), anthracite rocks (x 3), coal shale with plant imprints (x 3).

The kit consists of:
- Peat
- Coal (Lignite)
- Charcoal
- Coal shale with plant prints