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Sample BAD-4
NavDat sample number 12133 · ANDESITE
Sample
| Sample ID | BAD-4 |
|---|
| Rock name | ANDESITE |
|---|
| Rock type | VOLCANIC |
|---|
| Composition | INTERMEDIATE |
|---|
| Material | IGNEOUS |
|---|
| Comment | medium to dark gray, moderately microporphyritic with calcic plagioclase, hypersthene and olivine phenocrysts set in pilotaxitic to intergranular and microdiktytaxitic groundmass |
|---|
Location
| Latitude | 40.7417 |
|---|
| Longitude | -121.035 |
|---|
| State / province | California |
|---|
| Volcanic field | Walker Lane |
|---|
Age
| Age (Ma) | Error | Min | Max | Geologic age | Dated by |
|---|
| 2.8 |
|
2.3 |
3.3 |
|
|
Analyses
Whole rock
| Item | Value | Std. dev. | Unit | Method |
|---|
| K2O | 2.143 | | WT% | UNKNOWN |
