BGS mineralogy and petrology collection record
| Sample number | MR7310 |
|---|---|
| Sample Donor | Not entered |
| Rock name | 'Original entry: Sand Above Chalk For Comparison With Thanet Sand' |
| Stratigraphy | Not entered |
| Comments | TH Martin, Barnet District Gas and Water Co. |
| Locality details | Northaw, Herts |
| 50k map sheet | Hertford (239) |
| Map reference | TL 280 023 |
| Year collected | Not entered |
| Bore name | Not applicable |
| Confidentiality | No restrictions |