Dacite is an igneous volcanic rock that is typically light in color, ranging from gray to white. It is composed mainly of quartz, feldspar, and biotite, giving it a fine-grained texture. Dacite forms from the cooling and solidification of magma that is rich in silica, making it similar to andesite but with a higher silica content. This rock is often found in volcanic arcs and is associated with explosive volcanic eruptions. Dacite can create various geological formations, including lava domes and volcanic ash deposits. Its unique composition makes it an important subject of study in geology and volcanology.