Which rock is described below? "This rock is shiny and contains scattered, well-formed crystals of garnet, staurolite, and kyanite."
A) slate
B) phyllite
C) schist
D) gneiss

Question

Quizplus · Accepted Answer

The presence of well-formed crystals of garnet, staurolite, and kyanite suggests a metamorphic rock with medium to high grade metamorphism, such as schist. Schist is characterized by its shiny appearance and abundant visible crystals of various minerals. Slate and phyllite are lower grade metamorphic rocks that usually lack visible crystals, while gneiss is typically coarse-grained and lacks the shiny appearance.

Which Rock Is Described Below? "This Rock Is Shiny and Contains