← Search
Sample 151
NavDat sample number 11376 · TRACHYTE
Sample
| Sample ID | 151 |
|---|
| Rock name | TRACHYTE |
|---|
| Rock type | VOLCANIC |
|---|
| Composition | INTERMEDIATE |
|---|
| Material | IGNEOUS |
|---|
| Comment | porphyritic; phenocrysts form flow foliation; holocrystalline matrix of anorthoclase-Na sanidine, clinopyroxene, and magnetite; phenocrysts are feldspar, amphibole, pyroxene, magnetite-ulvospinel, and minor biotite |
|---|
Location
| Latitude | 42.7325 |
|---|
| Longitude | -107.327 |
|---|
| Location | Rattlesnake Hills |
|---|
| State / province | Wyoming |
|---|
| Volcanic field | alkali trachyte |
|---|
Age
| Age (Ma) | Error | Min | Max | Geologic age | Dated by |
|---|
| 43.6 |
|
41.4 |
46.6 |
|
|
