| Collection | ABDUG University of Aberdeen, Geological Collections |
| Object Name | Syenite |
| Object Number | ABDUG Rock.7857 |
| Brief Description | Amphibole, quartz syenite - marginal, subsolvus; S |
| Place Key | At quarry cuttings, 1 1/2 miles N of Lettermore, Ben Loyal, Sutherland, Scotland |
| Aquisition Source | R. Robertson, BL2 |
| Aquisition Date | 01/01/1970 |