Volcanic ash deposits composed of maficminerals sometimes develop a very distinctive reddish-orange colour after weathering at the surface.This colouration results from the

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The reddish-orange color of volcanic ash deposits after weathering at the surface results from the oxidation of iron in the ash. Mafic minerals contain iron, which can undergo oxidation (loss of electrons) when exposed to oxygen and water at the surface. This results in the formation of iron oxides, such as hematite or goethite, which give the ash its distinctive color.

Volcanic Ash Deposits Composed Of Maficminerals Sometimes Develop a Very