What apparent difference is there between a gneiss that is formed from igneous rock and one formed from sedimentary rock?
A) crystal size
B) mineral content
C) age
D) color

Question

Quizplus · Accepted Answer

The primary difference between a gneiss formed from igneous rock and one formed from sedimentary rock is in their mineral content. This is because the original rock types have different mineral compositions, which are then altered through the process of metamorphism into gneiss, but still reflect their original mineralogical differences.

What Apparent Difference Is There Between a Gneiss That Is