| Name | Andesite |
| Texture | Aphanitic (Fine-grained) |
| Origin | Extrusive/Volcanic |
| Chemical Composition | Intermediate |
| Color | Medium Gray |
| Mineral Composition | Sodium - Calcium Plagioclase, Hornblende, Biotite |
| Tectonic Environment | Convergent Boundary - both Island Arc-type and Andean-type subduction zones |
