It is a mineral IF it: : it is solid, it is natural, it was never alive (inorganic), it is always made of the same 'stuff' (chemical composition), it is made of crystals, it always acts the same way, Is it NOT a mineral IF: : it is a gas, it is man made (ex: plastic), it came from a living thing (a dead bug), it's not made of crystals, it's not a consistent make-up (structure),

Minerals

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