BGS mineralogy and petrology collection record
| Sample number | MR10062; F3558; |
|---|---|
| Sample Donor | Not entered |
| Rock name | Granite, Porphyritic. 'Original entry: Granite Porphyry' |
| Stratigraphy | Not entered |
| Comments | granite porphyry, ,Collected by P Niggli; Purchase from Schwalm, B�tzingen (Baden):S3 |
| Locality details | Tetzeln, Oberlauchringen,surface exposure,Schwartzwald Massif,Germany |
| 50k map sheet | Not entered |
| Map reference | Not entered |
| Year collected | 1933 |
| Bore name | Not applicable |
| Confidentiality | No restrictions |