Ключевые слова: anthracite, background, bituminous, black, carbon, char, charcoal, closeup, coal, coarse, crude, crystall, crystalline, crystallization, fibrillar, fibrous, filament, formation, fossil, fuel, geological, geology, grained, grizzle, material, mine, mineral, mineralization, mineralogy, mining, monochrome, natural, ore, raw, rock, rocky, rough, schist, shale, shist, shiver, slate, stone, structure, surface, textured, wild,