| Name | Phyllite |
| Texture | Foliated; Fine-grained |
| Composition | Muscovite, Biotite, Quartz, Plagioclase |
| Index Minerals | |
| Color | Shiny Gray |
| Miscellaneous | Foliation surface has a satiny sheen and crinkled appearance |
| Metamorphic Type | Regional |
| Metamorphic Grade | Low Grade (Higher than Slate) |
| Parent Rock | Shale or Mudstone |
| Metamorphic Environment | Low grade regional metamorphism along a convergent plate boundary |