What Is The Color Of Andesite Rock?

What Is The Color Of Andesite Rock? Andesite is the volcanic equivalent of diorite How do you identify andesite rocks? ANDESITE is the fine- grained equivalent of DIORITE. It tends to be a darker gray than rhyolite and is often porphyritic, with visible hornblende. BASALT occurs as thin to massive lava. What is andesite rock?