The best representative of the acid igneous rocks is ________

The best representative of the acid igneous rocks is Granite. A good example of intrusive igneous rock is granite. Acidic rocks are light in color and basic rocks are dark in color. (Persilicic is a little-used term equivalent to acidic as applied to igneous rocks). Among the volcanic rocks, rhyolite, obsidian, and acidic tuff are the predominant representatives; among the deep-seated rocks, granite and granodiorite are most common.