BGS mineralogy and petrology collection record
| Sample number | MR20671 |
|---|---|
| Sample Donor | Not entered |
| Rock name | Granite, Pegmatitic. 'Original entry: Pegmatitic Biotite Granite' |
| Stratigraphy | Not entered |
| Comments | pegmatitic biotite granite, ,Collected by T C F Hall:235 |
| Locality details | Old fort, Tang Ah San Sung,surface exposure,North Korea |
| 50k map sheet | Not entered |
| Map reference | Not entered |
| Year collected | 1956 |
| Bore name | Not applicable |
| Confidentiality | No restrictions |