Final answer:
The aphanitic equivalent of granite is rhyolite, which has a fine-grained texture and similar mineralogy as granite but with smaller crystals.
Step-by-step explanation:
The aphanitic equivalent of granite is rhyolite. Rhyolite is a felsic, extrusive igneous rock that has the same chemistry and mineralogy as granite, but it is very finely crystalline with crystals smaller than 1 mm in size. Rhyolites are often light gray to pinkish to somewhat reddish in color and have a aphanitic texture.