Why does hematite cause the rusty red color observed in many surface rocks?

A) Hematite is a carbon-oxide, giving rocks the red color (even if in small amounts).
B) Hematite contains pyrite, giving rocks the red color (even if in small amounts).
C) Hematite is an iron-oxide, giving rocks the red color (even if in small amounts).
D) Carbonic acid weathers hematite, giving rocks the red color (even if in small amounts).


Answer: C

Environmental & Atmospheric Sciences

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