Cleavage fragments are barely visible to the naked eye. Fragments are thicker than slaty cleavage and the cleavage planes are somewhat more irregular. Cleavage in the form of flakes, clearly visible. Rough cleavage surfaces. Coarse foliation or banding in which the bands are of different mineral composition.
Cleavage planes are irregular and rough.
No preferred orientation of minerals. The rock has no preferred orientation of breakage. The earth is always shifting and moving. The oceanic plate is made of dense basaltic rock and the continental plate is made of lighter felsic igneous rock and sedimentary and metamorphic rocks. When the oceanic plate collides with the continental plate it is pushed beneath the continental plate.