Members of the diorite family<span> have an </span>intermediate<span> composition that is neither felsic nor mafic but has characteristics of both. ... Diorite, a coarse-grained rock, has less quartz than </span>granite<span> and less plagioclase feldspar than gabbro. Andesite is a fine-grained member of the diorite </span>family<span>.</span>
