2007-01-24 17:24:20 · 7 answers · asked by aliah_natasya2003 1 in Science & Mathematics ➔ Earth Sciences & Geology
graphite, which in turn comes from coal.
2007-01-24 17:28:04 · answer #1 · answered by Anonymous · 1⤊ 0⤋
Carbon (coal)
Under extreme pressure, heat, and time - it turns into a diamond.
(Diamonds are most often found in what used to be volcanos.)
Some diamonds have little imprefections in them that are black (I don't know if you've ever looked at a diamond under a magnifying glass? Not all of them have these - only lower clarity ones might) These little black spots (which a sales person will never tell you are coal) are bits of the surrounding coal which didn't get changed into diamond.
2007-01-25 01:34:01 · answer #2 · answered by tigglys 6 · 1⤊ 0⤋
Coal
2007-01-25 01:33:17 · answer #3 · answered by high_d75 2 · 0⤊ 0⤋
Carbon or graphite (a form of carbon) - commonly seen in the form of coal!
2007-01-25 01:28:54 · answer #4 · answered by Anonymous · 1⤊ 0⤋
As every one said above, it is an allotrope of carbon....same in chemical composition but differs in structural arrangement of atoms to form a crystal.
2007-01-25 02:05:09 · answer #5 · answered by smash wit love 1 · 0⤊ 0⤋
coal
2007-01-25 01:33:07 · answer #6 · answered by Aviator1013 4 · 0⤊ 0⤋
coal
2007-01-25 01:32:07 · answer #7 · answered by rocknrandy77 2 · 0⤊ 0⤋