Certain metamorphic rocks that do not exhibit foliation (banding, lamellar texture) like quartzite and marble are described as non-foliated.
nonfoliated rocks
Because layers from foliated rocks came from the same direction and nonfoliated rocks came from several directions
hardness]
Sedimentary rocks have layers, not metamorphic rocks.
Neither. The terms foliated and nonfoliated apply to metamorphic rocks. Andesite is igneous.
Usually have a rougher texture
Metamorphic rocks that do not exhibit foliation.
Yes! they are!
Quartzite, marble and conglomerate.
Lack of banding
marble, quartzite, cataclasite, metabasalt
foliated and nonfoliated