Sample 90B
NavDat sample number 3538 · SYENITE
Sample
| Sample ID | 90B |
|---|---|
| Rock name | SYENITE |
| Rock type | PLUTONIC |
| Composition | INTERMEDIATE |
| Material | IGNEOUS |
| Comment | alk-syenite dike |
Location
| Latitude | 47.1966 |
|---|---|
| Longitude | -111.667 |
| Location | N-S trending dike on eastern boundary of section |
| State / province | Montana |
| Volcanic field | Adel Mountain Volcanics |
Age
| Age (Ma) | Error | Min | Max | Geologic age | Dated by |
|---|---|---|---|---|---|
| 74 | 73 | 76 |