Sample 132
NavDat sample number 16729 · RHYOLITE
Sample
| Sample ID | 132 |
|---|---|
| Rock name | RHYOLITE |
| Rock type | VOLCANIC |
| Composition | FELSIC |
| Material | IGNEOUS |
| Comment | aphanitic; equigranular; holocrystalline; orthoclase, quartz, and pyrite with some perthite, biotite, and plagioclase |
Location
| Latitude | 44.3493 |
|---|---|
| Longitude | -103.844 |
| Location | Black Hills |
| State / province | South Dakota |
| Volcanic field | Richmond Hill intrusive complex |
Age
| Age (Ma) | Error | Min | Max | Geologic age | Dated by |
|---|---|---|---|---|---|
| 49 | 39 | 60 |