 However it is unusual that the name does not include reference to the mountain's distinct red tinge cause by its red granite rock.Mullach nan Coirean stands in stark contrast to the adjoining Stob Bàn, which is a pointed and light coloured peak, owing to its crown of quartzite.Mullach nan Coirean differs, being a large sprawling mountain of ridges and corries with its granite rock giving the mountain a definite red shade (see picture).