← Search
Sample 36
NavDat sample number 11327 · DACITE
Sample
| Sample ID | 36 |
|---|
| Rock name | DACITE |
|---|
| Rock type | VOLCANIC |
|---|
| Composition | FELSIC |
|---|
| Material | IGNEOUS |
|---|
| Comment | seriate, porphyritic; fine grained to microcrystalline holocrystalline matrix of plagioclase, quartz, Na sanidine; vesicles common, with flow foliation; phenocrysts of plagioclase, amphibole, and minor alkali feldspar, magnetite, and biotite |
|---|
Location
| Latitude | 42.7169 |
|---|
| Longitude | -107.263 |
|---|
| Location | Rattlesnake Hills |
|---|
| State / province | Wyoming |
|---|
| Volcanic field | SW dacite group |
|---|
Age
| Age (Ma) | Error | Min | Max | Geologic age | Dated by |
|---|
| 43.6 |
|
41.4 |
46.6 |
|
|
