Garnet-Mica Schist
Type | Metamorphic Rock |
Texture | Foliated; Fine- to medium-grained |
Composition | Muscovite, Biotite, Garnet, Quartz, Feldspar |
Index Minerals | Garnet |
Color | Shiny, medium gray |
Miscellaneous | Small-sized dark red-brown garnets on foliation surfaces |
Metamorphic Type | Regional |
Metamorphic Grade | Middle Grade (Middle P – Middle T) |
Parent Rock | Shale, Mudstone, or Felsic Igneous rocks |
Metamorphic Environment | Middle grade regional metamorphism along a convergent plate boundary |