Anthracite. Specimens of anthracite coal,a hard,lustrous sedimentary rock derived from vegetable debris. Anthracite is a slow-burning,relatively smokeless fuel which gives out intense heat and is used in the production of coal gas,and in the iron,steel and synthetic rubber industries. It occurs in Paleozoic rocks (230-570 million years ago),in particular the Carboniferous of North America (Appalachian Mountains) and Europe,and the Permian of China,Siberia and Australia. This sample comes from south eastern British Columbia,Canada | |
Licence : | Droits gérés |
Crédit: | Science Photo Library / Svensson, Kaj R. |
Taille de l’image : | 2480 px × 3716 px |
Model Release : | Non requis |
Property Release : | Non requis |
Restrictions : | - |