Answer: Rhyolite
Step-by-step explanation:
Rhyolite is an extrusive igneous rock. It is formed by the volcanic eruption. This rock have glassy appearance. It is a fine grained rock. It has light color due to small grain size and deposition of silica so the color is pink or gray. It also comprises of dark colored mineral specks like quartz, sanidine, plagioclase, biotite, and others. This rock also comprises of trapped gases. The rock appears in the crystalline form and appearance. The low content of the mafic minerals also contribute to the light color of the rhyolite rock.