In a metamorphic rock, the larger crystals set in a finer-grained matrix are called:

In a metamorphic rock, the larger crystals set in a finer-grained matrix are called:

In a metamorphic rock, the larger crystals set in a finer-grained matrix are called:




a. porpyhroblasts.

b. vesicles.

c. scoria.

d. phenocrysts.



Answer: A