| Collection | ABDUG University of Aberdeen, Geological Collections |
| Object Name | Greywacke |
| Object Number | ABDUG Rock.5105 |
| Brief Description | Well-bedded greywacke in which a marly layer has re-crystallized readily to amphibolite while sandy layer is unaffected |
| Place Key | Broder Township, Sudbury, Ontario, Canada |
| Aquisition Source | T.C.P. |
| Aquisition Date | 01/01/1959 |