- Atlas of Igneous and Metamorphic Rocks, Minerals, and Textures
 - Features photomicrographs of minerals and textures in thin-sections of igneous and metamorphic rocks. - DJW's Metamorphic Petrology Links
- Contains annotated links to material about metamorphic rocks, migmatites and granitoid rocks, and related areas of "hard-rock" geology.
- Earth Science Lab: Metamorphic Rock Identification
- Includes metamorphic rock identification chart, information on texture, foliation, non-foliation, and pictorial exercise for identifying the rocks.
- Metamorphic Rock Identification: What Lies Beneath?
- Learn about the textures and classification of rocks resulting from mineralogical and structural adjustments of existing solid rocks.
- Metamorphic Rocks
- Offers an introduction to metamorphic processes as well as a classification key for the rocks.
- Metamorphic Rocks in Thin Section
- Image gallery allowing viewers an up-close look at the mineral makeup of metamorphic rocks.
- Metamorphic Studies Group (MSG)
- Promotes the study of metamorphic rocks, processes, and petrology as well as the environment of metamorphism.
- SOES Geology Collection Metamorphic Rocks
- Offers a virtual tray of common metamorphic rock specimens to study.
- Wikipedia: Metamorphic Rock
- Hyperlinked overview of metamorphic rock, which occurs as the result of the transformation of a pre-existing rock type, the protolith, in a process called metamorphism.
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