← Search
Sample USGSM-BH15
NavDat sample number 2887 · DACITE
Sample
| Sample ID | USGSM-BH15 |
|---|
| Rock name | DACITE |
|---|
| Rock type | VOLCANIC |
|---|
| Composition | FELSIC |
|---|
| Material | IGNEOUS |
|---|
| Comment | Dark-gray to black dacite, with phenocrysts of plagioclase, hornblende, and biotite, and minor pyroxene in an aphanitic groundmass. Hornblende is much more abundant than biotite. |
|---|
Location
| Latitude | 38.2025 |
|---|
| Longitude | -119.009 |
|---|
| Location | Mono County, CA |
|---|
| State / province | California |
|---|
| Volcanic field | Bodie Mining District and Bodie Hills Volcanic Field |
|---|
| Location comment | 1,000 ft E of the Red Cloud shaft |
|---|
Age
| Age (Ma) | Error | Min | Max | Geologic age | Dated by |
|---|
| 8.9 |
|
8.7 |
9.1 |
|
|
Analyses
No chemical analyses are stored for this sample.
