red hot coal heap on white background close up, orange burning coal stones pile, fossil fuel, smolder embers, bonfire

anthracite background black blaze bonfire bright brown burn burning caloric calorific carbon charcoal closeup coal color combust combustible combustion concept dark embers energy fire firewood flame fossil fuel furnace glow heap heat hot ignite igniting industrial industry inflame isolated lignite lump macro material mine mineral mining natural nuggets orange ore piece pieces pile power raw red resource resources rock shiny smolder stack stone texture warm warmth white