Coal black mineral resources. Pieces of fossil stone. Polygonal shape. Black rock stone of graphite or charcoal. Energy resource charcoal icon. premium vector by the8monkey.gmail.com

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white vector object graphic element illustration isolated mine mineral stone facet heap sign nature environment texture energy natural piece black power dark cut symbol icon industry structure flat work grey fuel material template dirty rock geometric Pollution production geometry block factory coal resource fossil charcoal carbon lump calorific combustible polygonal

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