← Search
Sample BL-44
NavDat sample number 8427 · PHONOLITE
Sample
| Sample ID | BL-44 |
|---|
| Rock name | PHONOLITE |
|---|
| Rock type | VOLCANIC |
|---|
| Composition | INTERMEDIATE |
|---|
| Material | IGNEOUS |
|---|
| Comment | holocrystalline; aphanitic and slightly porphyritic; phenocrysts of orthoclase, sodalite, aegirine, melanite; trachytic groundmass of microcrystalline orthoclase and aegirine |
|---|
Location
| Latitude | 44.4573 |
|---|
| Longitude | -104.441 |
|---|
| Location | Bear Lodge Mountains, Houston Creek area |
|---|
| State / province | Wyoming |
|---|
Age
| Age (Ma) | Error | Min | Max | Geologic age | Dated by |
|---|
| 43.9 |
|
36.7 |
51.1 |
|
|
