Both andesite and ___ are composed of feldspars and 30% to 50% ferromagnesian minerals.
A) granite
B) diorite
C) pegmatite
D) gabbro
E) rhyolite

Question

Quizplus · Accepted Answer

Diorite is the only one of the options given that fits the description of being composed of feldspars and 30% to 50% ferromagnesian minerals, just like andesite. The other options either have different mineral compositions or are not similar in composition to andesite.

Both Andesite and ___ Are Composed of Feldspars and 30