Home > Rocks > Metamorphic Rocks > Foliated Metamorphic Rocks

Foliated metamorphic rocks are most commonly derived from mudstones, though they can be derived from any multi-mineral rock. These rocks are transformed from their parent rocks through heat and pressure.

Characteristics
Foliated metamorphic rocks can be easily identified by their rock cleavage, or flakes. When these rocks break, they form uniform thin, flat fragments.

How they are formed
Foliated metamorphic rocks are formed from a multi-mineral, mica-rich rock that is subjected to progressively greater heat and direct pressure. Through this heat and pressure, the rocks several minerals may recombine in different ways to form a number of new minerals, making up a new rock.

Where they are found
These rocks can be found near where there parent rocks used to be. One famous foliated metamorphic rock, slate, which is formed from shale, is most commonly found, however in classrooms as chalkboards, or as floor tiles, roofing tiles, and pool-table tops.

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