According to the research, the coloration of the rainbow mountain is due to the composition of minerals that it has: the pink color is for the red clay, fangolitas and arilitas. The whitish, for the quartzose sandstone and marls, rich in calcium carbonate. The red is composed of the clay (iron) and clays belonging to the upper tertiary. The green is due to the compound of phyllites and clays rich in ferro magnesian. The earthy brown is a product of fanglomerate composed of rock with magnesium belonging to the Quaternary era. And the mustard yellow color for the calcareous sandstones rich in sulfur minerals, the vinicunca mountain is rich in all these minerals.
