Metamorphic rocks close metamorphic rockMetamorphic rocks ... be split into thin layers for use as roofing material. Marble is white or have swirls of colour with a crystallised structure.

These minerals are found in metamorphic rocks—rocks transformed by heat ... Colors show the distribution of thorium, where ...

These minerals are found in metamorphic rocks – rocks transformed by heat ... Colors show the distribution of thorium, where white and red indicate higher concentrations, while blue and purple ...