Granophyric textures can be found in S-type granites, particularly leucocratic ones. It is a leucocratic variety of analcimite (a foidite). The most widespread types of rock are leucocratic gneisses rich in quartz. Trondhjemite is a leucocratic (light-colored) intrusive igneous rock. The color index of S-type granites can vary from melanocratic to leucocratic. The gneiss is leucocratic, with only minor amounts of biotite and muscovite.