BGS mineralogy and petrology collection record
| Sample number | MR6733; F3314; |
|---|---|
| Sample Donor | Not entered |
| Rock name | Tuff, Trachytic. 'Original entry: Tuff' |
| Stratigraphy | Not entered |
| Comments | TUFF, ,Collected by F. Schwalm (Baden):red29 |
| Locality details | Kruft, Eifel,surface exposure,Germany |
| 50k map sheet | Not entered |
| Map reference | Not entered |
| Year collected | 1932 |
| Bore name | Not applicable |
| Confidentiality | No restrictions |