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Geology 101
Metamorphic Rocks
| Question | Answer |
|---|---|
| Slate | Low metamorphic grade, regional metamorphism, fine grain, black color, aluminous |
| Phylite | High metamorphic grade, Regional metamorphism, very fine grain, gray/black, aluminous |
| Schist | Medium metamorphic grade, Regional metamorphism, 2mm grains, large crystals, black/grey, aluminous |
| Marble | High metamorphic grade, Contact metamorphism, very large grain, grey/white, Calcareous |
| Gneiss | High metamorphic grade, Regional metamorphism, mm grain, horizontal, aluminous |
| Quartzite | Low metamorphic grade, Contact metamorphism, very fine grain, small white crystals, Quartzo-feldspathic |
| Hornfels | Low metamorphic grade, Contact metamorphism, no visible grains, smooth black surface, result of contact metamorphism |