If a rock is metamorphosed but does not contain foliation or lineation, what has probably happened to the rock?

Explanation:

One of the first scenario is that the rock might not contain minerals that would result in the formation of foliations and lineations in the rock.

The bulk of a rock fabric depends on mineral orientations and their unique properties. This is why platy minerals play very important roles in defining the fabric of a rock.

Another scenario is that, the rock might have exceeded the extreme of metamorphism where melting is approached. All fabrics will eventually fan out and be destroyed.