| Name | Amphibolite |
| Texture | Non-foliated to weakly-foliated; Medium-grained |
| Composition | Amphibole and Plagioclase |
| Index Minerals | Amphibole |
| Color | Black |
| Miscellaneous | Salt and pepper appearance |
| Metamorphic Type | Regional |
| Metamorphic Grade | Middle Grade (Middle P - Middle T) |
| Parent Rock | Basalt; Mafic igneous rocks |
| Metamorphic Environment | Middle grade regional metamorphism along a convergent plate boundary |