When Iron-bearing silicate minerals in the desert landscape oxidize;
it will produce a color to the stones and soils that looks like a rust color. Oxidize
means an element is chemically combined with oxygen. So in this situation, the
Iron bearing silicate minerals was chemically combined with oxygen, that’s why
it produces a rust colored stain. It is called as rust colored stain because it
basically looks like a rust stain, it is color orange that caused stain the
stones and sands in the desert.
