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Sample 81JD172
NavDat sample number 16764 · DACITE
Sample
| Sample ID | 81JD172 |
|---|
| Rock name | DACITE |
|---|
| Rock type | VOLCANIC |
|---|
| Composition | FELSIC |
|---|
| Material | IGNEOUS |
|---|
Location
| Latitude | 36.875 |
|---|
| Longitude | -121.185 |
|---|
| Location | central Diablo Range |
|---|
| State / province | California |
|---|
| Volcanic field | Quien Sabe |
|---|
Age
| Age (Ma) | Error | Min | Max | Geologic age | Dated by |
|---|
| 9.7 |
|
8.5 |
10.9 |
|
|
Analyses
Whole rock
| Item | Value | Std. dev. | Unit | Method |
|---|
| SIO2 | 64.5 | | WT% | XRF |
| AL2O3 | 17.05 | | WT% | XRF |
| FE2O3 | 1.68 | | WT% | XRF |
| FEO | 2.27 | | WT% | XRF |
| MGO | 1.6 | | WT% | XRF |
| CAO | 4.15 | | WT% | XRF |
| NA2O | 5.33 | | WT% | XRF |
| K2O | 2.48 | | WT% | XRF |
| TIO2 | 0.66 | | WT% | XRF |
| P2O5 | 0.26 | | WT% | XRF |
| MNO | 0.07 | | WT% | XRF |
