Shiny piece of raw black coal mineral isolated on white background surface.
Schlüsselwörter
coal,
mineral,
rock,
black,
shiny,
raw,
energy,
carbon,
geology,
natural,
fossil,
fuel,
mining,
texture,
rough,
stone,
dark,
solid,
surface,
resource,
organic,
hard,
material,
industry,
charcoal,
combustible,
crystal,
formation,
petrography,
sedimentary,
bituminous,
anthracite,
stratification,
layer,
sparking,
sparkle,
background,
extraction,
traditional
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