Is coal a polymer or mineral?
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Both coal and polymers are organic so what classification is coal, rock? mineral? stuff? HARD GOO?
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Both coal and polymers are organic so what classification is coal, rock? mineral? stuff? HARD GOO?
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It is certainly not a polymer. Nor would I describe it as a mineral - it is not a single substance with a well-defined chemical composition and set of properties. It is simply a sedimentary rock, of variable composition and properties.