BGS mineralogy and petrology collection record
| Sample number | MR18979 |
|---|---|
| Sample Donor | Not entered |
| Rock name | Mudstone. 'Original entry: Shale With Chiastolite' |
| Stratigraphy | Not entered |
| Comments | shale with chiastolite, Brioverian,Collected by M C Crosfield:133 |
| Locality details | Port Martin, Cote du Nord,surface exposure,France |
| 50k map sheet | Not entered |
| Map reference | Not entered |
| Year collected | 1952 |
| Bore name | Not applicable |
| Confidentiality | No restrictions |