Sample USGSD-621-1
NavDat sample number 7976 · ANDESITE
Sample
| Sample ID | USGSD-621-1 |
|---|---|
| Rock name | ANDESITE |
| Rock type | VOLCANIC |
| Composition | INTERMEDIATE |
| Material | IGNEOUS |
| Comment | pilotaxitic; plagioclase, augite-pigeonite, olivine, biotite, opaques, and possibly some glass |
Location
| Latitude | 45.6097 |
|---|---|
| Longitude | -112.81 |
| Location | overlies an ash bed; Beaverhead County |
| State / province | Montana |
Age
| Age (Ma) | Error | Min | Max | Geologic age | Dated by |
|---|---|---|---|---|---|
| 46.7 | 45.1 | 48.3 |
Analyses
No chemical analyses are stored for this sample.