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List the five characteristics a substance must have to be a mineral. Explain why coal and a glass marble are not minerals.



(This is chemistry right?)

Verified Answer :

  • Naturally occurring
    - Inorganic
    - Solid
    - Definite chemical composition
    - Ordered internal structure
    A mineral has to be naturally occurring. Coal is not a mineral because it is carbon-based and comes from fossilized plants. Glass is non-crystalline solid.

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