| Collection | ABDUG University of Aberdeen, Geological Collections |
| Object Name | Ignimbrite |
| Object Number | ABDUG Rock.8378 |
| Brief Description | Welded tuff with abundant plag., biotite, sanidine and quartz. Little sign of eutaxitic texture, but is ignimbrite |
| Place Key | Quaternary age, Viterbo, Italy (Central) |
| Aquisition Source | G.P.L. Walker, A |