The development of a preferred orientation of large,flaky mica crystals within metamorphic rock is termed ________.
A)slaty cleavage
B)phyllitic luster
C)schistosity
D)compositional banding

Question

Quizplus · Accepted Answer

Schistosity refers to the development of a preferred orientation of large, flaky minerals (such as mica) within metamorphic rock, giving it a layered appearance. Slaty cleavage refers to the parallel alignment of fine-grained minerals in a metamorphic rock, creating a fissile texture. Phyllitic luster refers to the sheen on the surface of a rock created by the alignment of mica or other platy minerals, but it is not synonymous with the development of a preferred orientation. Compositional banding refers to the segregation of minerals into distinct layers within a rock, often seen in igneous rocks.

The Development of a Preferred Orientation of Large,flaky Mica Crystals