A weakly foliated metamorphic rock composed of quartz is classified as a
A) quartzite.
B) marble.
C) hornfels.
D) gneiss.

Question

Quizplus · Accepted Answer

A metamorphic rock composed mostly of quartz is classified as quartzite. It typically has a strong, granular texture and often has a white or light-colored appearance. Marble is composed of calcite, hornfels is a dense, fine-grained rock that typically lacks significant foliation, and gneiss is a highly foliated metamorphic rock that typically has alternating bands of different minerals.

A Weakly Foliated Metamorphic Rock Composed of Quartz Is Classified