| Name | Rhyolite |
| Texture | Aphanitic (Fine-grained) |
| Origin | Extrusive/Volcanic |
| Chemical Composition | Felsic |
| Color | Light Gray |
| Mineral Composition | Potassium Feldspar, Quartz, Sodium Plagioclase, Biotite, Hornblende |
| Miscellaneous | Flow banding |
| Tectonic Environment | Convergent Boundary - Andean-type subduction zones, intracontinental hot spots and rifts |
