* Schist: A common metamorphic rock that often contains mica. The mica flakes give schist its characteristic foliated texture, where the minerals are aligned in parallel layers.
* Gneiss: A metamorphic rock with a more distinct banding than schist, due to the segregation of different minerals. Mica is often a major component of gneiss, contributing to its foliation.
* Phyllite: A fine-grained metamorphic rock that is transitional between slate and schist. It often contains abundant mica, which gives it a silky sheen.
* Slate: A fine-grained metamorphic rock formed from shale. While not directly formed from mica, slate can contain mica, and further metamorphism of slate can lead to the formation of phyllite and schist.
So, there's no single rock that is always formed when mica is metamorphosed. The exact outcome depends on the specific circumstances.
