Fusain-rich coal
Fusain-rich coal is a distinctive variety of coal in which fragments of fossil charcoal, known collectively as fusain, are abundant. These coals preserve a record of ancient paleo-wildfires and the…
Fusain-rich coal is a distinctive variety of coal in which fragments of fossil charcoal, known collectively as fusain, are abundant. These coals preserve a record of ancient paleo-wildfires and the…
