Sample SW3
NavDat sample number 3533 · SYENITE
Sample
| Sample ID | SW3 |
|---|---|
| Rock name | SYENITE |
| Rock type | PLUTONIC |
| Composition | INTERMEDIATE |
| Material | IGNEOUS |
| Comment | alk-syenite vein in alk-gabbro laccolith |
Location
| Latitude | 47.4848 |
|---|---|
| Longitude | -111.852 |
| Location | vein in alkali gabbro at Hanson Coulee |
| State / province | Montana |
| Volcanic field | Adel Mountain Volcanics |
Age
| Age (Ma) | Error | Min | Max | Geologic age | Dated by |
|---|---|---|---|---|---|
| 74 | 73 | 76 |