BGS mineralogy and petrology collection record
| Sample number | MR10049; F3541; |
|---|---|
| Sample Donor | Not entered |
| Rock name | Mylonite. 'Original entry: Mylonite, Quartz Porphyritic' |
| Stratigraphy | Not entered |
| Comments | mylonite, quartz porphyritic, ,Collected by P Niggli; Purchase from Schwalm, B�tzingen (Baden):T11 |
| Locality details | Gurtmellen,surface exposure,Aar Massif,Switzerland |
| 50k map sheet | Not entered |
| Map reference | Not entered |
| Year collected | 1933 |
| Bore name | Not applicable |
| Confidentiality | No restrictions |