The rock in the picture is rhyolite, an extrusive igneous rock. based on its appearance, how would you classify this rock?

The Rock is picture is Felsic.

Explanation:

Rhyolites are volcanic rocks that are igneous. The main component of these rocks is Silica and based on silica content they are termed as Mafic, Felsic, Intermediate and ultramafic. Felsic rocks have the highest silica content (more than or approximately 65%) and are lighter in color than other rocks. Mafic, ultramafic and intermediate rocks contain less content of Silica. They have high content of magnesium and mostly are of dark color.