BGS mineralogy and petrology collection record
| Sample number | MR6679; F3261; |
|---|---|
| Sample Donor | Not entered |
| Rock name | Phonolite. 'Original entry: Natrolite Phonolite' |
| Stratigraphy | Not entered |
| Comments | natrolite phonolite, ,Collected by F. Schwalm (Baden):blue43 |
| Locality details | Aussig, Mittelgebirges, Bohemia,surface exposure,See ledger for reference to analysis,Czechoslovakia |
| 50k map sheet | Not entered |
| Map reference | Not entered |
| Year collected | 1932 |
| Bore name | Not applicable |
| Confidentiality | No restrictions |