What are two carbon minerals and how do they differ?

Answer:
graphite, the substance that makes the lead of your pencil is mostly carbon in one form. It is very soft, which is what makes it work as pencil lead because as you run it across a piece of paper, the graphite rubs off onto the paper.

diamond is pure carbon in another form, and is the hardest naturally occurring substance known to man.
Contributor: Kevin
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