Translation of comer. On the contrary, Swiss like to isolate themselves from the rest, maybe because the believe that they are superior or better, or maybe because they are just afraid of the unknown, change is not happening.ranslation of comer. On the contrary, Swiss like to isolate themselves from the rest, maybe because the believe that they are superior or better, or maybe because they are just afraid of the unknown, change is not happening.
Dark colored igneous rocks are high in iron and other heavier elements: ma-fic, magnesium-iron. Light color igneous rocks are high in aluminum and potassium. .ou need to understand one of the fundamental differences between mafic and felsic rocks. Mafic rocks contain larger amounts of Mg and Fe than felsic rocks. The atomic weights of Mg and Fe are higher than Al, Si, and O, therefore they tend to be heavier. Very simple concept.
Some common mafic igneous rocks include fine grained basalt (see image link) and coarse grained gabbro (see image link). Mafic igneous rocks tend to be dark in color because they contain a large proportion of minerals rich in iron and magnesium (pyroxene, amphiboles, and olivine).ndesite (see image link) and diorite are intermediate igneous rocks that have a chemistry between mafic and felsic (silica amounts between 53 to 65%). These rocks are composed predominantly of the minerals plagioclase feldspar, amphibole, and pyroxene.