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In oxidation weathering what colour do iron-bearing minerals generally develop?

Answer and explanation

Correct answer: Red or yellowish brown

Direct answer: Option C, red or yellowish brown. Oxidation occurs when oxygen reacts with minerals, especially iron-bearing minerals. Iron oxides and hydroxides resemble rust, so weathered rock commonly develops reddish, brown, or yellowish-brown colours. Option C is correct. Option A is wrong because blue or purple is not the usual colour produced by iron oxidation. Option B is wrong because oxidation does not generally make iron-bearing rock white or transparent. Option D is wrong because green or shiny black is not the standard rust-like result. The exact shade can vary with minerals and moisture, but the school-level clue is iron plus oxygen equals rust colour. Cue: oxidation means rust-like red-brown.

Related tags

Geomorphic ProcessesWeatheringOxidation

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