A wall made from andesite.
a dark-colored, fine-grained, extrusive igneous rock consisting chiefly of plagioclase feldspars with some biotite, hornblende, or pyroxene
Origin of andesiteafter Andes (Mountains) + -ite
A gray, fine-grained volcanic rock consisting chiefly of plagioclase feldspar and one or more mafic minerals.
Origin of andesiteAfter the Andes.