| Collection | ABDUG University of Aberdeen, Geological Collections |
| Object Name | Grit |
| Object Number | ABDUG Rock.7033 |
| Brief Description | Grey feldspathic grit with opalescent blue quartz, S |
| Place Key | Muckle Fergie Burn: cobble in boulder bed L. on E. side of Glen Avon. Grid. Ref. 167139, Tomintoul, Banffshire, Scotland |
| Aquisition Source | WCM 200C |